./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0219.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0219.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 d0a821c00018fd0a7d1057c117e3e5b172a3096a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0219.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 d0a821c00018fd0a7d1057c117e3e5b172a3096a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:04:32,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:04:32,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:04:32,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:04:32,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:04:32,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:04:32,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:04:32,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:04:32,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:04:32,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:04:32,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:04:32,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:04:32,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:04:32,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:04:32,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:04:32,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:04:32,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:04:32,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:04:32,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:04:32,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:04:32,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:04:32,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:04:32,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:04:32,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:04:32,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:04:32,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:04:32,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:04:32,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:04:32,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:04:32,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:04:32,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:04:32,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:04:32,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:04:32,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:04:32,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:04:32,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:04:32,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:04:32,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:04:32,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:04:32,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:04:32,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:04:32,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:04:32,880 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:04:32,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:04:32,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:04:32,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:04:32,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:04:32,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:04:32,885 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:04:32,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:04:32,885 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:04:32,886 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:04:32,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:04:32,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:04:32,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:04:32,887 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:04:32,887 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:04:32,887 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:04:32,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:04:32,893 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:04:32,893 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:04:32,893 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:04:32,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:04:32,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:04:32,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:04:32,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:04:32,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:04:32,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:04:32,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:04:32,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:04:32,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:04:32,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0a821c00018fd0a7d1057c117e3e5b172a3096a [2021-08-30 17:04:33,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:04:33,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:04:33,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:04:33,164 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:04:33,165 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:04:33,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0219.i [2021-08-30 17:04:33,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1d3aa616/2d718a7a8f3f408183a3979b6a676b1f/FLAG249f76693 [2021-08-30 17:04:33,656 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:04:33,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0219.i [2021-08-30 17:04:33,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1d3aa616/2d718a7a8f3f408183a3979b6a676b1f/FLAG249f76693 [2021-08-30 17:04:33,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1d3aa616/2d718a7a8f3f408183a3979b6a676b1f [2021-08-30 17:04:33,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:04:33,690 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:04:33,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:04:33,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:04:33,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:04:33,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:33" (1/1) ... [2021-08-30 17:04:33,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6afb6b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:33, skipping insertion in model container [2021-08-30 17:04:33,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:33" (1/1) ... [2021-08-30 17:04:33,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:04:33,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:04:34,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:04:34,024 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:04:34,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:04:34,083 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:04:34,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:34 WrapperNode [2021-08-30 17:04:34,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:04:34,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:04:34,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:04:34,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:04:34,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:34" (1/1) ... [2021-08-30 17:04:34,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:34" (1/1) ... [2021-08-30 17:04:34,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:34" (1/1) ... [2021-08-30 17:04:34,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:34" (1/1) ... [2021-08-30 17:04:34,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:34" (1/1) ... [2021-08-30 17:04:34,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:34" (1/1) ... [2021-08-30 17:04:34,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:34" (1/1) ... [2021-08-30 17:04:34,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:04:34,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:04:34,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:04:34,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:04:34,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:34" (1/1) ... [2021-08-30 17:04:34,135 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:04:34,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:04:34,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:04:34,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:04:34,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:04:34,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:04:34,174 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:04:34,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:04:34,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:04:34,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:04:34,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:04:34,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:04:34,175 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-08-30 17:04:34,175 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-08-30 17:04:34,175 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-08-30 17:04:34,175 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-08-30 17:04:34,175 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:04:34,176 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-30 17:04:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:04:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:04:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:04:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:04:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:04:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:04:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:04:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:04:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:04:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:04:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:04:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:04:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:04:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:04:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:04:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:04:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:04:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:04:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:04:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:04:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:04:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:04:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:04:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:04:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:04:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:04:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:04:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:04:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:04:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:04:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:04:34,180 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:04:34,180 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:04:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:04:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:04:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:04:34,187 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:04:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:04:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:04:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:04:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:04:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:04:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:04:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:04:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:04:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:04:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:04:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:04:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:04:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:04:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:04:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:04:34,190 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:04:34,190 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:04:34,191 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:04:34,191 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:04:34,191 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:04:34,192 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:04:34,192 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:04:34,192 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:04:34,192 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:04:34,193 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:04:34,193 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:04:34,193 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:04:34,193 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:04:34,193 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:04:34,193 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:04:34,193 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:04:34,193 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:04:34,193 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:04:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:04:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:04:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:04:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:04:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:04:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:04:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:04:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:04:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:04:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:04:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:04:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:04:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:04:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:04:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:04:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:04:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:04:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:04:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:04:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:04:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:04:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:04:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:04:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:04:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:04:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:04:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:04:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:04:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:04:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:04:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:04:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:04:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:04:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:04:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:04:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:04:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:04:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:04:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:04:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:04:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:04:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:04:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-30 17:04:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-30 17:04:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-30 17:04:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-30 17:04:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-30 17:04:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-30 17:04:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-30 17:04:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-30 17:04:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-30 17:04:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-30 17:04:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-30 17:04:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-30 17:04:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-30 17:04:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-30 17:04:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-30 17:04:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-30 17:04:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-30 17:04:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-30 17:04:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-30 17:04:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-30 17:04:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-30 17:04:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-30 17:04:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-30 17:04:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-30 17:04:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-30 17:04:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-30 17:04:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-30 17:04:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-30 17:04:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-30 17:04:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-30 17:04:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-30 17:04:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-30 17:04:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-30 17:04:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-30 17:04:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-30 17:04:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-30 17:04:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-30 17:04:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-30 17:04:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-08-30 17:04:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-08-30 17:04:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-30 17:04:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-30 17:04:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-08-30 17:04:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-08-30 17:04:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-08-30 17:04:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-30 17:04:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-30 17:04:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-30 17:04:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-30 17:04:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-30 17:04:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-30 17:04:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-08-30 17:04:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:04:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-30 17:04:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:04:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-08-30 17:04:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:04:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:04:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-08-30 17:04:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:04:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-08-30 17:04:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:04:34,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:04:34,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 17:04:34,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-30 17:04:34,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:04:34,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 17:04:34,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 17:04:34,468 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:04:34,530 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:04:34,535 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-30 17:04:34,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:34 BoogieIcfgContainer [2021-08-30 17:04:34,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:04:34,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:04:34,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:04:34,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:04:34,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:04:33" (1/3) ... [2021-08-30 17:04:34,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34cfd081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:04:34, skipping insertion in model container [2021-08-30 17:04:34,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:34" (2/3) ... [2021-08-30 17:04:34,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34cfd081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:04:34, skipping insertion in model container [2021-08-30 17:04:34,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:34" (3/3) ... [2021-08-30 17:04:34,545 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0219.i [2021-08-30 17:04:34,548 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:04:34,548 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-08-30 17:04:34,572 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:04:34,576 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:04:34,576 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-08-30 17:04:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 64 states have (on average 1.859375) internal successors, (119), 108 states have internal predecessors, (119), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-08-30 17:04:34,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:04:34,589 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:34,589 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:34,590 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:34,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1812237907, now seen corresponding path program 1 times [2021-08-30 17:04:34,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:04:34,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264660957] [2021-08-30 17:04:34,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:34,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:04:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:34,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:04:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:34,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:34,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:04:34,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264660957] [2021-08-30 17:04:34,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264660957] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:34,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:34,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 17:04:34,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756643342] [2021-08-30 17:04:34,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:04:34,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:04:34,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:04:34,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:04:34,775 INFO L87 Difference]: Start difference. First operand has 123 states, 64 states have (on average 1.859375) internal successors, (119), 108 states have internal predecessors, (119), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:34,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:34,948 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2021-08-30 17:04:34,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:04:34,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:04:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:34,956 INFO L225 Difference]: With dead ends: 137 [2021-08-30 17:04:34,956 INFO L226 Difference]: Without dead ends: 134 [2021-08-30 17:04:34,957 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:04:34,959 INFO L928 BasicCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.60ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150.91ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:34,960 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 22 Invalid, 228 Unknown, 0 Unchecked, 2.60ms Time], IncrementalHoareTripleChecker [8 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 150.91ms Time] [2021-08-30 17:04:34,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-08-30 17:04:35,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2021-08-30 17:04:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 61 states have (on average 1.8032786885245902) internal successors, (110), 106 states have internal predecessors, (110), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2021-08-30 17:04:35,012 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 7 [2021-08-30 17:04:35,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:35,013 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2021-08-30 17:04:35,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:35,013 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2021-08-30 17:04:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:04:35,016 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:35,016 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:35,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 17:04:35,017 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:35,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:35,019 INFO L82 PathProgramCache]: Analyzing trace with hash 723613811, now seen corresponding path program 1 times [2021-08-30 17:04:35,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:04:35,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708798516] [2021-08-30 17:04:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:35,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:04:35,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:04:35,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870491452] [2021-08-30 17:04:35,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:35,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:04:35,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:04:35,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:04:35,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 17:04:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:35,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 17:04:35,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:35,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:04:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:35,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 17:04:35,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:04:35,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708798516] [2021-08-30 17:04:35,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:04:35,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870491452] [2021-08-30 17:04:35,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870491452] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:35,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:35,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 17:04:35,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121972485] [2021-08-30 17:04:35,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:04:35,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:04:35,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:04:35,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:04:35,268 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:35,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:35,404 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2021-08-30 17:04:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:04:35,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 17:04:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:35,408 INFO L225 Difference]: With dead ends: 119 [2021-08-30 17:04:35,408 INFO L226 Difference]: Without dead ends: 119 [2021-08-30 17:04:35,409 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:04:35,410 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.01ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:35,414 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 217 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 121.01ms Time] [2021-08-30 17:04:35,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-30 17:04:35,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-08-30 17:04:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 61 states have (on average 1.7868852459016393) internal successors, (109), 105 states have internal predecessors, (109), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2021-08-30 17:04:35,427 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 10 [2021-08-30 17:04:35,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:35,427 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2021-08-30 17:04:35,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:35,428 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2021-08-30 17:04:35,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:04:35,428 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:35,428 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:35,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:35,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:04:35,654 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:35,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:35,655 INFO L82 PathProgramCache]: Analyzing trace with hash 723613812, now seen corresponding path program 1 times [2021-08-30 17:04:35,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:04:35,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850025144] [2021-08-30 17:04:35,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:35,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:04:35,669 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:04:35,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182707814] [2021-08-30 17:04:35,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:35,670 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:04:35,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:04:35,683 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:04:35,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 17:04:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:35,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 17:04:35,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:35,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-08-30 17:04:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:35,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 17:04:35,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:04:35,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850025144] [2021-08-30 17:04:35,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:04:35,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182707814] [2021-08-30 17:04:35,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182707814] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:35,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:35,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 17:04:35,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649563337] [2021-08-30 17:04:35,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:04:35,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:04:35,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:04:35,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:04:35,898 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:36,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:36,074 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2021-08-30 17:04:36,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 17:04:36,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 17:04:36,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:36,075 INFO L225 Difference]: With dead ends: 118 [2021-08-30 17:04:36,075 INFO L226 Difference]: Without dead ends: 118 [2021-08-30 17:04:36,075 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.57ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:04:36,076 INFO L928 BasicCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.23ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.19ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:36,076 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 34 Invalid, 328 Unknown, 0 Unchecked, 3.23ms Time], IncrementalHoareTripleChecker [3 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 154.19ms Time] [2021-08-30 17:04:36,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-30 17:04:36,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-30 17:04:36,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 60 states have (on average 1.8) internal successors, (108), 104 states have internal predecessors, (108), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:36,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-30 17:04:36,083 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 10 [2021-08-30 17:04:36,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:36,084 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-30 17:04:36,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:36,084 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-30 17:04:36,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-30 17:04:36,085 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:36,085 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:36,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:36,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-30 17:04:36,293 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:36,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:36,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1381204090, now seen corresponding path program 1 times [2021-08-30 17:04:36,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:04:36,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039053315] [2021-08-30 17:04:36,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:36,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:04:36,311 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:04:36,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818111065] [2021-08-30 17:04:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:36,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:04:36,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:04:36,317 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:04:36,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-30 17:04:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:36,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-30 17:04:36,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:36,522 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-30 17:04:36,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-30 17:04:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-30 17:04:36,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 17:04:36,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:04:36,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039053315] [2021-08-30 17:04:36,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:04:36,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818111065] [2021-08-30 17:04:36,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818111065] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:36,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:36,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 17:04:36,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589057715] [2021-08-30 17:04:36,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 17:04:36,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:04:36,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 17:04:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:04:36,543 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 17:04:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:36,785 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2021-08-30 17:04:36,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 17:04:36,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 37 [2021-08-30 17:04:36,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:36,787 INFO L225 Difference]: With dead ends: 116 [2021-08-30 17:04:36,787 INFO L226 Difference]: Without dead ends: 116 [2021-08-30 17:04:36,787 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.47ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:04:36,788 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 183.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 227.84ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:36,788 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 64 Invalid, 643 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [5 Valid, 622 Invalid, 0 Unknown, 16 Unchecked, 227.84ms Time] [2021-08-30 17:04:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-30 17:04:36,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-30 17:04:36,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 60 states have (on average 1.7666666666666666) internal successors, (106), 102 states have internal predecessors, (106), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-30 17:04:36,792 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 37 [2021-08-30 17:04:36,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:36,792 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-30 17:04:36,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 17:04:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-30 17:04:36,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-30 17:04:36,793 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:36,793 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:36,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:37,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:04:37,005 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:37,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:37,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1381204089, now seen corresponding path program 1 times [2021-08-30 17:04:37,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:04:37,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343983038] [2021-08-30 17:04:37,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:37,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:04:37,017 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:04:37,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689520981] [2021-08-30 17:04:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:37,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:04:37,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:04:37,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:04:37,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-30 17:04:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:37,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-30 17:04:37,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:37,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-08-30 17:04:40,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:04:40,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343983038] [2021-08-30 17:04:40,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:04:40,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689520981] [2021-08-30 17:04:40,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:04:40,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:40,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-30 17:04:40,197 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-08-30 17:04:40,197 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-30 17:04:40,200 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION (45 of 46 remaining) [2021-08-30 17:04:40,201 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION (44 of 46 remaining) [2021-08-30 17:04:40,201 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION (43 of 46 remaining) [2021-08-30 17:04:40,201 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION (42 of 46 remaining) [2021-08-30 17:04:40,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION (41 of 46 remaining) [2021-08-30 17:04:40,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION (40 of 46 remaining) [2021-08-30 17:04:40,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION (39 of 46 remaining) [2021-08-30 17:04:40,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION (38 of 46 remaining) [2021-08-30 17:04:40,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION (37 of 46 remaining) [2021-08-30 17:04:40,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION (36 of 46 remaining) [2021-08-30 17:04:40,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION (35 of 46 remaining) [2021-08-30 17:04:40,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION (34 of 46 remaining) [2021-08-30 17:04:40,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr6REQUIRES_VIOLATION (33 of 46 remaining) [2021-08-30 17:04:40,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr7REQUIRES_VIOLATION (32 of 46 remaining) [2021-08-30 17:04:40,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr8REQUIRES_VIOLATION (31 of 46 remaining) [2021-08-30 17:04:40,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr9REQUIRES_VIOLATION (30 of 46 remaining) [2021-08-30 17:04:40,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION (29 of 46 remaining) [2021-08-30 17:04:40,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION (28 of 46 remaining) [2021-08-30 17:04:40,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (27 of 46 remaining) [2021-08-30 17:04:40,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (26 of 46 remaining) [2021-08-30 17:04:40,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (25 of 46 remaining) [2021-08-30 17:04:40,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (24 of 46 remaining) [2021-08-30 17:04:40,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (23 of 46 remaining) [2021-08-30 17:04:40,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (22 of 46 remaining) [2021-08-30 17:04:40,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (21 of 46 remaining) [2021-08-30 17:04:40,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (20 of 46 remaining) [2021-08-30 17:04:40,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (19 of 46 remaining) [2021-08-30 17:04:40,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (18 of 46 remaining) [2021-08-30 17:04:40,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE (17 of 46 remaining) [2021-08-30 17:04:40,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11ASSERT_VIOLATIONMEMORY_FREE (16 of 46 remaining) [2021-08-30 17:04:40,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ASSERT_VIOLATIONMEMORY_FREE (15 of 46 remaining) [2021-08-30 17:04:40,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (14 of 46 remaining) [2021-08-30 17:04:40,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (13 of 46 remaining) [2021-08-30 17:04:40,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (12 of 46 remaining) [2021-08-30 17:04:40,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (11 of 46 remaining) [2021-08-30 17:04:40,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17ENSURES_VIOLATIONMEMORY_LEAK (10 of 46 remaining) [2021-08-30 17:04:40,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION (9 of 46 remaining) [2021-08-30 17:04:40,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION (8 of 46 remaining) [2021-08-30 17:04:40,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2REQUIRES_VIOLATION (7 of 46 remaining) [2021-08-30 17:04:40,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3REQUIRES_VIOLATION (6 of 46 remaining) [2021-08-30 17:04:40,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE (5 of 46 remaining) [2021-08-30 17:04:40,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE (4 of 46 remaining) [2021-08-30 17:04:40,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE (3 of 46 remaining) [2021-08-30 17:04:40,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 46 remaining) [2021-08-30 17:04:40,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 46 remaining) [2021-08-30 17:04:40,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr9ASSERT_VIOLATIONMEMORY_FREE (0 of 46 remaining) [2021-08-30 17:04:40,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:40,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:04:40,428 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:04:40,432 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:04:40,432 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:04:40,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:04:40 BoogieIcfgContainer [2021-08-30 17:04:40,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:04:40,438 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:04:40,438 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:04:40,438 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:04:40,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:34" (3/4) ... [2021-08-30 17:04:40,440 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:04:40,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:04:40,440 INFO L158 Benchmark]: Toolchain (without parser) took 6750.82ms. Allocated memory was 56.6MB in the beginning and 92.3MB in the end (delta: 35.7MB). Free memory was 33.7MB in the beginning and 40.0MB in the end (delta: -6.3MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2021-08-30 17:04:40,441 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:04:40,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.11ms. Allocated memory was 56.6MB in the beginning and 75.5MB in the end (delta: 18.9MB). Free memory was 33.5MB in the beginning and 49.4MB in the end (delta: -16.0MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2021-08-30 17:04:40,441 INFO L158 Benchmark]: Boogie Preprocessor took 41.78ms. Allocated memory is still 75.5MB. Free memory was 49.4MB in the beginning and 46.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 17:04:40,441 INFO L158 Benchmark]: RCFGBuilder took 411.48ms. Allocated memory is still 75.5MB. Free memory was 45.9MB in the beginning and 53.5MB in the end (delta: -7.6MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2021-08-30 17:04:40,442 INFO L158 Benchmark]: TraceAbstraction took 5896.53ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 52.9MB in the beginning and 40.7MB in the end (delta: 12.2MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2021-08-30 17:04:40,442 INFO L158 Benchmark]: Witness Printer took 2.37ms. Allocated memory is still 92.3MB. Free memory was 40.7MB in the beginning and 40.0MB in the end (delta: 696.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:04:40,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.11ms. Allocated memory was 56.6MB in the beginning and 75.5MB in the end (delta: 18.9MB). Free memory was 33.5MB in the beginning and 49.4MB in the end (delta: -16.0MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.78ms. Allocated memory is still 75.5MB. Free memory was 49.4MB in the beginning and 46.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 411.48ms. Allocated memory is still 75.5MB. Free memory was 45.9MB in the beginning and 53.5MB in the end (delta: -7.6MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5896.53ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 52.9MB in the beginning and 40.7MB in the end (delta: 12.2MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * Witness Printer took 2.37ms. Allocated memory is still 92.3MB. Free memory was 40.7MB in the beginning and 40.0MB in the end (delta: 696.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L687] static struct L1 *list; [L689] CALL l1_insert(&list) [L676] CALL, EXPR calloc_model(1U, sizeof *item) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L676] RET, EXPR calloc_model(1U, sizeof *item) [L676] struct L1 *item = calloc_model(1U, sizeof *item); [L677] COND FALSE !(!item) [L680] CALL l2_insert(&item->l2) [L655] CALL, EXPR calloc_model(1U, sizeof *item) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L655] RET, EXPR calloc_model(1U, sizeof *item) [L655] struct L2 *item = calloc_model(1U, sizeof *item); [L656] COND FALSE !(!item) [L658] item->proto = malloc(119U) - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 659]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 659]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 662]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 662]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 667]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 667]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 141 locations, 46 error locations. Started 1 CEGAR loops. OverallTime: 5856.17ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 11.21ms, AutomataDifference: 785.30ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 6.44ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 653.94ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 146 SdHoareTripleChecker+Invalid, 518.60ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 16 IncrementalHoareTripleChecker+Unchecked, 598 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1384 IncrementalHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 59 mSDtfsCounter, 1384 mSolverCounterSat, 10.32ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 64.53ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 58.58ms AutomataMinimizationTime, 4 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.10ms SsaConstructionTime, 69.27ms SatisfiabilityAnalysisTime, 344.01ms InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 1 QuantifiedInterpolants, 172 SizeOfPredicates, 4 NumberOfNonLiveVariables, 528 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:04:40,499 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... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:04:42,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:04:42,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:04:42,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:04:42,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:04:42,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:04:42,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:04:42,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:04:42,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:04:42,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:04:42,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:04:42,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:04:42,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:04:42,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:04:42,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:04:42,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:04:42,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:04:42,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:04:42,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:04:42,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:04:42,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:04:42,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:04:42,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:04:42,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:04:42,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:04:42,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:04:42,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:04:42,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:04:42,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:04:42,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:04:42,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:04:42,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:04:42,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:04:42,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:04:42,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:04:42,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:04:42,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:04:42,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:04:42,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:04:42,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:04:42,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:04:42,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 17:04:42,169 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:04:42,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:04:42,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:04:42,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:04:42,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:04:42,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:04:42,172 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:04:42,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:04:42,172 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:04:42,172 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:04:42,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:04:42,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:04:42,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:04:42,173 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:04:42,173 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:04:42,173 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:04:42,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:04:42,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:04:42,178 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 17:04:42,178 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 17:04:42,178 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:04:42,178 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:04:42,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:04:42,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:04:42,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:04:42,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:04:42,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:04:42,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:04:42,179 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 17:04:42,180 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 17:04:42,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:04:42,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 17:04:42,180 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0a821c00018fd0a7d1057c117e3e5b172a3096a [2021-08-30 17:04:42,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:04:42,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:04:42,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:04:42,423 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:04:42,423 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:04:42,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0219.i [2021-08-30 17:04:42,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0690f1d42/48df041ed50a4bb191b313323bb2d1e8/FLAGc44875d88 [2021-08-30 17:04:42,877 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:04:42,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0219.i [2021-08-30 17:04:42,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0690f1d42/48df041ed50a4bb191b313323bb2d1e8/FLAGc44875d88 [2021-08-30 17:04:43,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0690f1d42/48df041ed50a4bb191b313323bb2d1e8 [2021-08-30 17:04:43,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:04:43,243 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:04:43,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:04:43,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:04:43,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:04:43,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:43" (1/1) ... [2021-08-30 17:04:43,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a9b74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:43, skipping insertion in model container [2021-08-30 17:04:43,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:43" (1/1) ... [2021-08-30 17:04:43,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:04:43,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:04:43,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:04:43,521 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:04:43,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:04:43,577 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:04:43,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:43 WrapperNode [2021-08-30 17:04:43,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:04:43,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:04:43,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:04:43,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:04:43,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:43" (1/1) ... [2021-08-30 17:04:43,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:43" (1/1) ... [2021-08-30 17:04:43,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:43" (1/1) ... [2021-08-30 17:04:43,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:43" (1/1) ... [2021-08-30 17:04:43,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:43" (1/1) ... [2021-08-30 17:04:43,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:43" (1/1) ... [2021-08-30 17:04:43,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:43" (1/1) ... [2021-08-30 17:04:43,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:04:43,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:04:43,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:04:43,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:04:43,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:43" (1/1) ... [2021-08-30 17:04:43,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:04:43,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:04:43,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:04:43,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:04:43,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:04:43,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:04:43,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:04:43,703 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:04:43,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:04:43,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:04:43,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:04:43,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:04:43,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:04:43,704 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-08-30 17:04:43,704 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-08-30 17:04:43,705 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-08-30 17:04:43,705 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-08-30 17:04:43,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:04:43,705 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-30 17:04:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:04:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:04:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:04:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:04:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:04:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:04:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:04:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:04:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:04:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:04:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:04:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:04:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:04:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:04:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:04:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:04:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:04:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:04:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:04:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:04:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:04:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:04:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:04:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:04:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:04:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:04:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:04:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:04:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:04:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:04:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:04:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:04:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:04:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:04:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:04:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:04:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:04:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:04:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:04:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:04:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:04:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:04:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:04:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:04:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:04:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:04:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:04:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:04:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:04:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:04:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:04:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:04:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:04:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:04:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:04:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:04:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:04:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:04:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:04:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:04:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:04:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:04:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:04:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:04:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:04:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:04:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:04:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:04:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:04:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:04:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:04:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:04:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:04:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:04:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:04:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:04:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:04:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:04:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:04:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:04:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:04:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:04:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:04:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:04:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:04:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:04:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:04:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:04:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:04:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:04:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:04:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:04:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:04:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:04:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:04:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:04:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:04:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:04:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:04:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:04:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:04:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:04:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:04:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:04:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:04:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:04:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:04:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:04:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:04:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:04:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:04:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:04:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-30 17:04:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-30 17:04:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-30 17:04:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-30 17:04:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-30 17:04:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-30 17:04:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-30 17:04:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-30 17:04:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-30 17:04:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-30 17:04:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-30 17:04:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-30 17:04:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-30 17:04:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-30 17:04:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-30 17:04:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-30 17:04:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-30 17:04:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-30 17:04:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-30 17:04:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-30 17:04:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-30 17:04:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-30 17:04:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-30 17:04:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-30 17:04:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-30 17:04:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-30 17:04:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-30 17:04:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-30 17:04:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-30 17:04:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-30 17:04:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-30 17:04:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-30 17:04:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-30 17:04:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-30 17:04:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-30 17:04:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-30 17:04:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-30 17:04:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-30 17:04:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-08-30 17:04:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-08-30 17:04:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-30 17:04:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-30 17:04:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-08-30 17:04:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-08-30 17:04:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-08-30 17:04:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-30 17:04:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-30 17:04:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-30 17:04:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-30 17:04:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-30 17:04:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-30 17:04:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-08-30 17:04:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:04:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-30 17:04:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:04:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-08-30 17:04:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:04:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:04:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-08-30 17:04:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:04:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-08-30 17:04:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:04:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:04:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-30 17:04:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-30 17:04:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:04:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:04:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-30 17:04:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-30 17:04:43,999 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:04:44,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:04:44,072 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-30 17:04:44,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:44 BoogieIcfgContainer [2021-08-30 17:04:44,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:04:44,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:04:44,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:04:44,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:04:44,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:04:43" (1/3) ... [2021-08-30 17:04:44,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503b55dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:04:44, skipping insertion in model container [2021-08-30 17:04:44,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:43" (2/3) ... [2021-08-30 17:04:44,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503b55dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:04:44, skipping insertion in model container [2021-08-30 17:04:44,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:44" (3/3) ... [2021-08-30 17:04:44,088 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0219.i [2021-08-30 17:04:44,091 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:04:44,091 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-08-30 17:04:44,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:04:44,131 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:04:44,131 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-08-30 17:04:44,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 62 states have (on average 1.8870967741935485) internal successors, (117), 106 states have internal predecessors, (117), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-08-30 17:04:44,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:04:44,159 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:44,159 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:44,160 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:44,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:44,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1291303161, now seen corresponding path program 1 times [2021-08-30 17:04:44,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:44,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659747553] [2021-08-30 17:04:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:44,171 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:44,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:44,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:44,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 17:04:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:44,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-30 17:04:44,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:44,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:44,426 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:44,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659747553] [2021-08-30 17:04:44,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659747553] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:44,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:44,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:04:44,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161123056] [2021-08-30 17:04:44,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-30 17:04:44,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:44,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-30 17:04:44,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-30 17:04:44,454 INFO L87 Difference]: Start difference. First operand has 121 states, 62 states have (on average 1.8870967741935485) internal successors, (117), 106 states have internal predecessors, (117), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:44,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:44,667 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-08-30 17:04:44,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-30 17:04:44,669 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:04:44,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:44,673 INFO L225 Difference]: With dead ends: 121 [2021-08-30 17:04:44,673 INFO L226 Difference]: Without dead ends: 118 [2021-08-30 17:04:44,674 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.06ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-30 17:04:44,678 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 192.52ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:44,679 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 110 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 192.52ms Time] [2021-08-30 17:04:44,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-30 17:04:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-30 17:04:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 59 states have (on average 1.8305084745762712) internal successors, (108), 104 states have internal predecessors, (108), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-30 17:04:44,718 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 7 [2021-08-30 17:04:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:44,719 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-30 17:04:44,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:44,722 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-30 17:04:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:04:44,723 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:44,723 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:44,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:44,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:44,940 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:44,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:44,940 INFO L82 PathProgramCache]: Analyzing trace with hash 892717489, now seen corresponding path program 1 times [2021-08-30 17:04:44,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:44,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099448899] [2021-08-30 17:04:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:44,941 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:44,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:44,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:44,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 17:04:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:45,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 17:04:45,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:45,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:04:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:45,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:45,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:45,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099448899] [2021-08-30 17:04:45,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099448899] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:45,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:45,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:04:45,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418004563] [2021-08-30 17:04:45,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:04:45,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:45,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:04:45,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:04:45,168 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:45,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:45,444 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2021-08-30 17:04:45,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:04:45,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 17:04:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:45,445 INFO L225 Difference]: With dead ends: 117 [2021-08-30 17:04:45,445 INFO L226 Difference]: Without dead ends: 117 [2021-08-30 17:04:45,446 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:04:45,446 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 214.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 264.20ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:45,447 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 213 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 264.20ms Time] [2021-08-30 17:04:45,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-30 17:04:45,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-30 17:04:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 59 states have (on average 1.8135593220338984) internal successors, (107), 103 states have internal predecessors, (107), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:45,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-30 17:04:45,455 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 10 [2021-08-30 17:04:45,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:45,455 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-30 17:04:45,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-30 17:04:45,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:04:45,456 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:45,456 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:45,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:45,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:45,665 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:45,665 INFO L82 PathProgramCache]: Analyzing trace with hash 892717490, now seen corresponding path program 1 times [2021-08-30 17:04:45,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:45,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998441803] [2021-08-30 17:04:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:45,666 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:45,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:45,667 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:45,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 17:04:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:45,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:04:45,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:45,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-08-30 17:04:45,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:45,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:46,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:46,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998441803] [2021-08-30 17:04:46,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998441803] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:46,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:46,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 4 [2021-08-30 17:04:46,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304447600] [2021-08-30 17:04:46,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:04:46,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:46,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:04:46,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:04:46,045 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:47,548 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2021-08-30 17:04:47,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 17:04:47,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 17:04:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:47,549 INFO L225 Difference]: With dead ends: 116 [2021-08-30 17:04:47,549 INFO L226 Difference]: Without dead ends: 116 [2021-08-30 17:04:47,550 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 130.01ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:04:47,551 INFO L928 BasicCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1299.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.36ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1462.56ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:47,551 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 323 Unknown, 0 Unchecked, 3.36ms Time], IncrementalHoareTripleChecker [4 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 1462.56ms Time] [2021-08-30 17:04:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-30 17:04:47,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-30 17:04:47,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 58 states have (on average 1.8275862068965518) internal successors, (106), 102 states have internal predecessors, (106), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-30 17:04:47,556 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 10 [2021-08-30 17:04:47,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:47,556 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-30 17:04:47,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:47,557 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-30 17:04:47,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-30 17:04:47,557 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:47,558 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:47,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:47,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:47,767 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:47,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:47,768 INFO L82 PathProgramCache]: Analyzing trace with hash 71295803, now seen corresponding path program 1 times [2021-08-30 17:04:47,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:47,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953910679] [2021-08-30 17:04:47,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:47,768 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:47,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:47,770 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:47,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 17:04:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:47,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:04:47,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:48,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-30 17:04:48,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:48,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953910679] [2021-08-30 17:04:48,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953910679] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-30 17:04:48,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 17:04:48,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-08-30 17:04:48,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91452985] [2021-08-30 17:04:48,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:04:48,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:48,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:04:48,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:04:48,782 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 17:04:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:50,119 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-08-30 17:04:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:04:50,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 37 [2021-08-30 17:04:50,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:50,120 INFO L225 Difference]: With dead ends: 122 [2021-08-30 17:04:50,120 INFO L226 Difference]: Without dead ends: 117 [2021-08-30 17:04:50,121 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 382.37ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-30 17:04:50,121 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1075.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.82ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1236.23ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:50,121 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 55 Invalid, 546 Unknown, 0 Unchecked, 2.82ms Time], IncrementalHoareTripleChecker [1 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 1236.23ms Time] [2021-08-30 17:04:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-30 17:04:50,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-30 17:04:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 59 states have (on average 1.8135593220338984) internal successors, (107), 103 states have internal predecessors, (107), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-30 17:04:50,127 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 37 [2021-08-30 17:04:50,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:50,128 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-30 17:04:50,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 17:04:50,128 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-30 17:04:50,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-30 17:04:50,129 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:50,129 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:50,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:50,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:50,336 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:50,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:50,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1772361669, now seen corresponding path program 1 times [2021-08-30 17:04:50,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:50,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206425507] [2021-08-30 17:04:50,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:50,337 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:50,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:50,339 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:50,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 17:04:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:50,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 17:04:50,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 17:04:50,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-30 17:04:51,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:51,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206425507] [2021-08-30 17:04:51,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206425507] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:04:51,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:04:51,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-08-30 17:04:51,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147161319] [2021-08-30 17:04:51,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 17:04:51,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 17:04:51,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-08-30 17:04:51,465 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand has 11 states, 9 states have (on average 4.333333333333333) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:04:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:53,155 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2021-08-30 17:04:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:04:53,156 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.333333333333333) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 39 [2021-08-30 17:04:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:53,157 INFO L225 Difference]: With dead ends: 123 [2021-08-30 17:04:53,157 INFO L226 Difference]: Without dead ends: 118 [2021-08-30 17:04:53,157 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 511.23ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-08-30 17:04:53,158 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1383.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.16ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1583.26ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:53,158 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 68 Invalid, 665 Unknown, 0 Unchecked, 4.16ms Time], IncrementalHoareTripleChecker [5 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 1583.26ms Time] [2021-08-30 17:04:53,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-30 17:04:53,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-30 17:04:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 60 states have (on average 1.8) internal successors, (108), 104 states have internal predecessors, (108), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-30 17:04:53,167 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 39 [2021-08-30 17:04:53,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:53,167 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-30 17:04:53,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.333333333333333) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:04:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-30 17:04:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-30 17:04:53,168 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:53,168 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:53,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:53,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:53,375 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:53,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:53,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1896960251, now seen corresponding path program 2 times [2021-08-30 17:04:53,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:53,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924303212] [2021-08-30 17:04:53,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 17:04:53,377 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:53,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:53,377 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:53,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 17:04:53,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 17:04:53,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:04:53,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 17:04:53,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:53,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:04:53,653 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 17:04:53,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2021-08-30 17:04:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-30 17:04:53,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-08-30 17:04:53,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:53,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924303212] [2021-08-30 17:04:53,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924303212] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:53,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:53,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 6 [2021-08-30 17:04:53,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201607147] [2021-08-30 17:04:53,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 17:04:53,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:53,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 17:04:53,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:04:53,798 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-30 17:04:54,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:54,094 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2021-08-30 17:04:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:04:54,094 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2021-08-30 17:04:54,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:54,095 INFO L225 Difference]: With dead ends: 115 [2021-08-30 17:04:54,095 INFO L226 Difference]: Without dead ends: 115 [2021-08-30 17:04:54,095 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 57.28ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:04:54,096 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 37 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 239.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.00ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 282.18ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:54,096 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 44 Invalid, 410 Unknown, 0 Unchecked, 2.00ms Time], IncrementalHoareTripleChecker [2 Valid, 320 Invalid, 0 Unknown, 88 Unchecked, 282.18ms Time] [2021-08-30 17:04:54,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-30 17:04:54,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-08-30 17:04:54,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 60 states have (on average 1.75) internal successors, (105), 101 states have internal predecessors, (105), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2021-08-30 17:04:54,100 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 41 [2021-08-30 17:04:54,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:54,101 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2021-08-30 17:04:54,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-30 17:04:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2021-08-30 17:04:54,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-30 17:04:54,102 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:54,102 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:54,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-08-30 17:04:54,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:54,313 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:54,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:54,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1896960252, now seen corresponding path program 1 times [2021-08-30 17:04:54,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:54,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255017474] [2021-08-30 17:04:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:54,314 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:54,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:54,315 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:54,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-30 17:04:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:54,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 17:04:54,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-30 17:04:54,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-30 17:04:55,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:55,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255017474] [2021-08-30 17:04:55,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255017474] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:04:55,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:04:55,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-08-30 17:04:55,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914597898] [2021-08-30 17:04:55,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 17:04:55,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 17:04:55,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-08-30 17:04:55,537 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand has 13 states, 11 states have (on average 3.727272727272727) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:04:57,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:57,289 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-08-30 17:04:57,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 17:04:57,290 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.727272727272727) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 41 [2021-08-30 17:04:57,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:57,291 INFO L225 Difference]: With dead ends: 121 [2021-08-30 17:04:57,291 INFO L226 Difference]: Without dead ends: 116 [2021-08-30 17:04:57,291 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 639.66ms TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-08-30 17:04:57,291 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1382.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.66ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1603.11ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:57,292 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 89 Invalid, 873 Unknown, 0 Unchecked, 3.66ms Time], IncrementalHoareTripleChecker [5 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 1603.11ms Time] [2021-08-30 17:04:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-30 17:04:57,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-30 17:04:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 61 states have (on average 1.7377049180327868) internal successors, (106), 102 states have internal predecessors, (106), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-30 17:04:57,295 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 41 [2021-08-30 17:04:57,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:57,296 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-30 17:04:57,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.727272727272727) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:04:57,296 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-30 17:04:57,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-30 17:04:57,296 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:57,297 INFO L513 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:57,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:57,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:57,501 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:57,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:57,501 INFO L82 PathProgramCache]: Analyzing trace with hash 810613510, now seen corresponding path program 2 times [2021-08-30 17:04:57,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:57,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894151013] [2021-08-30 17:04:57,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 17:04:57,502 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:57,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:57,503 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:57,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-30 17:04:57,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 17:04:57,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:04:57,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-30 17:04:57,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-30 17:04:57,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-08-30 17:04:58,835 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:58,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894151013] [2021-08-30 17:04:58,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894151013] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:04:58,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:04:58,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-30 17:04:58,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713121637] [2021-08-30 17:04:58,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 17:04:58,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:58,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 17:04:58,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-08-30 17:04:58,839 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 15 states have internal predecessors, (43), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:00,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:05:00,607 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-08-30 17:05:00,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:05:00,607 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 15 states have internal predecessors, (43), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 43 [2021-08-30 17:05:00,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:05:00,608 INFO L225 Difference]: With dead ends: 122 [2021-08-30 17:05:00,608 INFO L226 Difference]: Without dead ends: 117 [2021-08-30 17:05:00,608 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 677.82ms TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-08-30 17:05:00,609 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1400.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.75ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1644.56ms IncrementalHoareTripleChecker+Time [2021-08-30 17:05:00,609 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 98 Invalid, 990 Unknown, 0 Unchecked, 3.75ms Time], IncrementalHoareTripleChecker [7 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 1644.56ms Time] [2021-08-30 17:05:00,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-30 17:05:00,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-30 17:05:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 103 states have internal predecessors, (107), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:05:00,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-30 17:05:00,612 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 43 [2021-08-30 17:05:00,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:05:00,612 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-30 17:05:00,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 15 states have internal predecessors, (43), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:00,613 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-30 17:05:00,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-30 17:05:00,613 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:05:00,614 INFO L513 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:05:00,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-30 17:05:00,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:05:00,817 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:05:00,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:05:00,817 INFO L82 PathProgramCache]: Analyzing trace with hash 126824124, now seen corresponding path program 3 times [2021-08-30 17:05:00,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:05:00,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977586978] [2021-08-30 17:05:00,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 17:05:00,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:05:00,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:05:00,818 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:05:00,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-30 17:05:00,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-30 17:05:00,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:05:00,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-30 17:05:00,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:05:01,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-08-30 17:05:01,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:05:02,050 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:05:02,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-08-30 17:05:02,055 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 17:05:02,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-08-30 17:05:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-30 17:05:02,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:05:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-08-30 17:05:06,427 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:05:06,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977586978] [2021-08-30 17:05:06,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977586978] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:05:06,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:05:06,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12 [2021-08-30 17:05:06,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35549811] [2021-08-30 17:05:06,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 17:05:06,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:05:06,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 17:05:06,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2021-08-30 17:05:06,429 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-30 17:05:07,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:05:07,162 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2021-08-30 17:05:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:05:07,162 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 45 [2021-08-30 17:05:07,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:05:07,163 INFO L225 Difference]: With dead ends: 116 [2021-08-30 17:05:07,163 INFO L226 Difference]: Without dead ends: 116 [2021-08-30 17:05:07,163 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4156.14ms TimeCoverageRelationStatistics Valid=41, Invalid=140, Unknown=1, NotChecked=0, Total=182 [2021-08-30 17:05:07,163 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 484.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.25ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 322 IncrementalHoareTripleChecker+Unchecked, 572.09ms IncrementalHoareTripleChecker+Time [2021-08-30 17:05:07,164 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 68 Invalid, 523 Unknown, 0 Unchecked, 2.25ms Time], IncrementalHoareTripleChecker [2 Valid, 199 Invalid, 0 Unknown, 322 Unchecked, 572.09ms Time] [2021-08-30 17:05:07,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-30 17:05:07,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-30 17:05:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 102 states have internal predecessors, (106), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:05:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-30 17:05:07,166 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 45 [2021-08-30 17:05:07,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:05:07,166 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-30 17:05:07,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-30 17:05:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-30 17:05:07,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-30 17:05:07,167 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:05:07,167 INFO L513 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:05:07,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-30 17:05:07,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:05:07,375 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting l2_insertErr3REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:05:07,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:05:07,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1618899805, now seen corresponding path program 1 times [2021-08-30 17:05:07,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:05:07,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835110871] [2021-08-30 17:05:07,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:05:07,376 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:05:07,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:05:07,376 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:05:07,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-30 17:05:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:05:07,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 17:05:07,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:05:07,838 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-30 17:05:07,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:05:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-30 17:05:09,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:05:09,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835110871] [2021-08-30 17:05:09,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835110871] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:05:09,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:05:09,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-08-30 17:05:09,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111219253] [2021-08-30 17:05:09,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-30 17:05:09,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:05:09,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-30 17:05:09,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-08-30 17:05:09,139 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:11,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:05:11,855 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-08-30 17:05:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:05:11,855 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 47 [2021-08-30 17:05:11,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:05:11,856 INFO L225 Difference]: With dead ends: 122 [2021-08-30 17:05:11,857 INFO L226 Difference]: Without dead ends: 117 [2021-08-30 17:05:11,857 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1113.69ms TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-08-30 17:05:11,857 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2122.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.41ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2458.41ms IncrementalHoareTripleChecker+Time [2021-08-30 17:05:11,858 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 101 Invalid, 995 Unknown, 0 Unchecked, 6.41ms Time], IncrementalHoareTripleChecker [11 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 2458.41ms Time] [2021-08-30 17:05:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-30 17:05:11,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-30 17:05:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 63 states have (on average 1.6984126984126984) internal successors, (107), 103 states have internal predecessors, (107), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:05:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-30 17:05:11,860 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 47 [2021-08-30 17:05:11,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:05:11,861 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-30 17:05:11,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:11,861 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-30 17:05:11,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-30 17:05:11,862 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:05:11,862 INFO L513 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:05:11,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-30 17:05:12,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:05:12,065 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting l2_insertErr3REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:05:12,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:05:12,065 INFO L82 PathProgramCache]: Analyzing trace with hash 937982055, now seen corresponding path program 2 times [2021-08-30 17:05:12,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:05:12,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758347949] [2021-08-30 17:05:12,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 17:05:12,066 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:05:12,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:05:12,067 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:05:12,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-30 17:05:12,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 17:05:12,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:05:12,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 17:05:12,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:05:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-08-30 17:05:12,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:05:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-08-30 17:05:12,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:05:12,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758347949] [2021-08-30 17:05:12,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758347949] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:05:12,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:05:12,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:05:12,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685619791] [2021-08-30 17:05:12,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:05:12,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:05:12,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:05:12,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:05:12,375 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 17:05:12,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:05:12,773 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2021-08-30 17:05:12,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:05:12,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2021-08-30 17:05:12,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:05:12,774 INFO L225 Difference]: With dead ends: 116 [2021-08-30 17:05:12,774 INFO L226 Difference]: Without dead ends: 116 [2021-08-30 17:05:12,774 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:05:12,775 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 342.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 390.35ms IncrementalHoareTripleChecker+Time [2021-08-30 17:05:12,775 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 29 Invalid, 189 Unknown, 0 Unchecked, 1.79ms Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 390.35ms Time] [2021-08-30 17:05:12,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-30 17:05:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-30 17:05:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 102 states have internal predecessors, (106), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:05:12,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-30 17:05:12,777 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 49 [2021-08-30 17:05:12,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:05:12,777 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-30 17:05:12,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 17:05:12,778 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-30 17:05:12,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-30 17:05:12,780 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:05:12,780 INFO L513 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:05:12,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-30 17:05:12,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:05:12,987 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting l2_insertErr4REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:05:12,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:05:12,988 INFO L82 PathProgramCache]: Analyzing trace with hash -542376120, now seen corresponding path program 1 times [2021-08-30 17:05:12,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:05:12,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416622036] [2021-08-30 17:05:12,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:05:12,988 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:05:12,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:05:12,989 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:05:12,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-30 17:05:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:05:13,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-30 17:05:13,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:05:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-30 17:05:13,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:05:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-08-30 17:05:14,993 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:05:14,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416622036] [2021-08-30 17:05:14,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416622036] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:05:14,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:05:14,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-30 17:05:14,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703825333] [2021-08-30 17:05:14,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-30 17:05:14,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:05:14,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-30 17:05:14,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-08-30 17:05:14,994 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 19 states, 17 states have (on average 3.0) internal successors, (51), 19 states have internal predecessors, (51), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:18,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:05:18,759 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-08-30 17:05:18,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 17:05:18,760 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.0) internal successors, (51), 19 states have internal predecessors, (51), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 51 [2021-08-30 17:05:18,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:05:18,760 INFO L225 Difference]: With dead ends: 122 [2021-08-30 17:05:18,760 INFO L226 Difference]: Without dead ends: 117 [2021-08-30 17:05:18,761 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1228.98ms TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-08-30 17:05:18,761 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3111.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.11ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3594.06ms IncrementalHoareTripleChecker+Time [2021-08-30 17:05:18,761 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 141 Invalid, 1437 Unknown, 0 Unchecked, 7.11ms Time], IncrementalHoareTripleChecker [11 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 3594.06ms Time] [2021-08-30 17:05:18,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-30 17:05:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-30 17:05:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 64 states have (on average 1.671875) internal successors, (107), 103 states have internal predecessors, (107), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:05:18,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-30 17:05:18,763 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 51 [2021-08-30 17:05:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:05:18,764 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-30 17:05:18,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.0) internal successors, (51), 19 states have internal predecessors, (51), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-30 17:05:18,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-30 17:05:18,771 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:05:18,772 INFO L513 BasicCegarLoop]: trace histogram [12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:05:18,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-30 17:05:18,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:05:18,972 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting l2_insertErr4REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:05:18,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:05:18,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1454408318, now seen corresponding path program 2 times [2021-08-30 17:05:18,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:05:18,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115769232] [2021-08-30 17:05:18,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 17:05:18,973 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:05:18,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:05:18,974 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:05:18,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-30 17:05:19,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 17:05:19,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:05:19,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 17:05:19,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:05:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 58 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-30 17:05:19,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:05:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-08-30 17:05:21,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:05:21,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115769232] [2021-08-30 17:05:21,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115769232] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:05:21,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:05:21,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-30 17:05:21,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602365253] [2021-08-30 17:05:21,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-30 17:05:21,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:05:21,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-30 17:05:21,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-08-30 17:05:21,117 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand has 21 states, 19 states have (on average 2.789473684210526) internal successors, (53), 21 states have internal predecessors, (53), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:25,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:05:25,237 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2021-08-30 17:05:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 17:05:25,238 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.789473684210526) internal successors, (53), 21 states have internal predecessors, (53), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 53 [2021-08-30 17:05:25,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:05:25,238 INFO L225 Difference]: With dead ends: 123 [2021-08-30 17:05:25,238 INFO L226 Difference]: Without dead ends: 118 [2021-08-30 17:05:25,239 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1459.41ms TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-08-30 17:05:25,239 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3236.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.21ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3774.72ms IncrementalHoareTripleChecker+Time [2021-08-30 17:05:25,239 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 109 Invalid, 1140 Unknown, 0 Unchecked, 7.21ms Time], IncrementalHoareTripleChecker [15 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 3774.72ms Time] [2021-08-30 17:05:25,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-30 17:05:25,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-30 17:05:25,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 104 states have internal predecessors, (108), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:05:25,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-30 17:05:25,242 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 53 [2021-08-30 17:05:25,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:05:25,242 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-30 17:05:25,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.789473684210526) internal successors, (53), 21 states have internal predecessors, (53), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:25,243 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-30 17:05:25,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-30 17:05:25,243 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:05:25,243 INFO L513 BasicCegarLoop]: trace histogram [14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:05:25,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-08-30 17:05:25,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:05:25,453 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting l2_insertErr4REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:05:25,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:05:25,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1274322296, now seen corresponding path program 3 times [2021-08-30 17:05:25,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:05:25,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847516222] [2021-08-30 17:05:25,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 17:05:25,454 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:05:25,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:05:25,460 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:05:25,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-30 17:05:25,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-30 17:05:25,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:05:25,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 17:05:25,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:05:25,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:05:25,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2021-08-30 17:05:25,951 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-30 17:05:25,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-08-30 17:05:26,050 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-08-30 17:05:26,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 52 [2021-08-30 17:05:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-08-30 17:05:26,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:06:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-08-30 17:06:14,923 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:06:14,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847516222] [2021-08-30 17:06:14,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847516222] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:06:14,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:06:14,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-08-30 17:06:14,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620754340] [2021-08-30 17:06:14,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-30 17:06:14,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:06:14,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-30 17:06:14,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=302, Unknown=15, NotChecked=0, Total=380 [2021-08-30 17:06:14,925 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 20 states, 18 states have (on average 2.611111111111111) internal successors, (47), 14 states have internal predecessors, (47), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:06:19,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:06:19,873 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2021-08-30 17:06:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 17:06:19,873 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.611111111111111) internal successors, (47), 14 states have internal predecessors, (47), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) Word has length 55 [2021-08-30 17:06:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:06:19,875 INFO L225 Difference]: With dead ends: 143 [2021-08-30 17:06:19,875 INFO L226 Difference]: Without dead ends: 143 [2021-08-30 17:06:19,875 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 85 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 53113.67ms TimeCoverageRelationStatistics Valid=96, Invalid=438, Unknown=18, NotChecked=0, Total=552 [2021-08-30 17:06:19,876 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 349.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.34ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 594 IncrementalHoareTripleChecker+Unchecked, 412.05ms IncrementalHoareTripleChecker+Time [2021-08-30 17:06:19,876 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 91 Invalid, 1042 Unknown, 0 Unchecked, 3.34ms Time], IncrementalHoareTripleChecker [9 Valid, 439 Invalid, 0 Unknown, 594 Unchecked, 412.05ms Time] [2021-08-30 17:06:19,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-08-30 17:06:19,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 129. [2021-08-30 17:06:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 74 states have (on average 1.5945945945945945) internal successors, (118), 113 states have internal predecessors, (118), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-30 17:06:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2021-08-30 17:06:19,879 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 55 [2021-08-30 17:06:19,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:06:19,879 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2021-08-30 17:06:19,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.611111111111111) internal successors, (47), 14 states have internal predecessors, (47), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:06:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2021-08-30 17:06:19,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-30 17:06:19,880 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:06:19,880 INFO L513 BasicCegarLoop]: trace histogram [14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:06:19,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-30 17:06:20,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:06:20,088 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting l2_insertErr5REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:06:20,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:06:20,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1274322295, now seen corresponding path program 1 times [2021-08-30 17:06:20,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:06:20,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588723040] [2021-08-30 17:06:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:06:20,089 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:06:20,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:06:20,090 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:06:20,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-30 17:06:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:06:20,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-30 17:06:20,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:06:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 73 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-08-30 17:06:20,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:06:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-08-30 17:06:22,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:06:22,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588723040] [2021-08-30 17:06:22,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588723040] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:06:22,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:06:22,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-30 17:06:22,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531081510] [2021-08-30 17:06:22,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-30 17:06:22,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:06:22,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-30 17:06:22,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-08-30 17:06:22,388 INFO L87 Difference]: Start difference. First operand 129 states and 137 transitions. Second operand has 23 states, 21 states have (on average 2.619047619047619) internal successors, (55), 23 states have internal predecessors, (55), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:06:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:06:25,295 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2021-08-30 17:06:25,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 17:06:25,296 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.619047619047619) internal successors, (55), 23 states have internal predecessors, (55), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2021-08-30 17:06:25,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:06:25,297 INFO L225 Difference]: With dead ends: 135 [2021-08-30 17:06:25,297 INFO L226 Difference]: Without dead ends: 130 [2021-08-30 17:06:25,298 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1544.81ms TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2021-08-30 17:06:25,299 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2315.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.94ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2709.80ms IncrementalHoareTripleChecker+Time [2021-08-30 17:06:25,299 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 144 Invalid, 1459 Unknown, 0 Unchecked, 5.94ms Time], IncrementalHoareTripleChecker [17 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 2709.80ms Time] [2021-08-30 17:06:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-08-30 17:06:25,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-08-30 17:06:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 75 states have (on average 1.5866666666666667) internal successors, (119), 114 states have internal predecessors, (119), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-30 17:06:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2021-08-30 17:06:25,305 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 55 [2021-08-30 17:06:25,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:06:25,305 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2021-08-30 17:06:25,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.619047619047619) internal successors, (55), 23 states have internal predecessors, (55), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:06:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2021-08-30 17:06:25,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-30 17:06:25,307 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:06:25,307 INFO L513 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:06:25,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-08-30 17:06:25,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:06:25,513 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting l2_insertErr5REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:06:25,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:06:25,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1041129535, now seen corresponding path program 2 times [2021-08-30 17:06:25,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:06:25,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439188979] [2021-08-30 17:06:25,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 17:06:25,514 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:06:25,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:06:25,514 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:06:25,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-08-30 17:06:25,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 17:06:25,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:06:25,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-30 17:06:25,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:06:25,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:06:25,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-08-30 17:06:29,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2021-08-30 17:06:29,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-08-30 17:06:29,938 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-08-30 17:06:29,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-08-30 17:06:29,963 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 17:06:29,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2021-08-30 17:06:30,488 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-30 17:06:30,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-08-30 17:06:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 1 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-08-30 17:06:30,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:06:38,260 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_l2_insert_~list.base_BEFORE_CALL_4 (_ BitVec 32)) (v_l2_insert_~list.offset_BEFORE_CALL_2 (_ BitVec 32))) (or (exists ((v_calloc_model_~ptr~0.base_99 (_ BitVec 32))) (and (or (exists ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_109 (_ BitVec 32)) (v_calloc_model_~nmemb_109 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_old(#length)| v_calloc_model_~ptr~0.base_99 (bvmul v_calloc_model_~nmemb_109 v_calloc_model_~size_109)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4)))) (not (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| v_calloc_model_~ptr~0.base_99))))))) (and (forall ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32))) (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store |c_#length| |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4))) (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2))))) is different from false [2021-08-30 17:06:40,262 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_l2_insert_~list.base_BEFORE_CALL_4 (_ BitVec 32)) (v_l2_insert_~list.offset_BEFORE_CALL_2 (_ BitVec 32))) (or (exists ((v_calloc_model_~ptr~0.base_99 (_ BitVec 32))) (and (or (exists ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_109 (_ BitVec 32)) (v_calloc_model_~nmemb_109 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_old(#length)| v_calloc_model_~ptr~0.base_99 (bvmul v_calloc_model_~nmemb_109 v_calloc_model_~size_109)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4)))) (not (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| v_calloc_model_~ptr~0.base_99))))))) (and (forall ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32))) (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store |c_#length| |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4))) (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2))))) is different from true [2021-08-30 17:06:47,522 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_calloc_model_~ptr~0.base_100 (_ BitVec 32)) (v_l2_insert_~list.base_BEFORE_CALL_4 (_ BitVec 32)) (v_l2_insert_~list.offset_BEFORE_CALL_2 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_calloc_model_~ptr~0.base_100)))) (and (forall ((v_calloc_model_~nmemb_110 (_ BitVec 32)) (|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_110 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_#length| v_calloc_model_~ptr~0.base_100 (bvmul v_calloc_model_~nmemb_110 v_calloc_model_~size_110)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4))) (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2))) (exists ((v_calloc_model_~ptr~0.base_99 (_ BitVec 32))) (and (or (exists ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_109 (_ BitVec 32)) (v_calloc_model_~nmemb_109 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_old(#length)| v_calloc_model_~ptr~0.base_99 (bvmul v_calloc_model_~nmemb_109 v_calloc_model_~size_109)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4)))) (not (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| v_calloc_model_~ptr~0.base_99))))))))) is different from false [2021-08-30 17:06:49,527 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_calloc_model_~ptr~0.base_100 (_ BitVec 32)) (v_l2_insert_~list.base_BEFORE_CALL_4 (_ BitVec 32)) (v_l2_insert_~list.offset_BEFORE_CALL_2 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_calloc_model_~ptr~0.base_100)))) (and (forall ((v_calloc_model_~nmemb_110 (_ BitVec 32)) (|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_110 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_#length| v_calloc_model_~ptr~0.base_100 (bvmul v_calloc_model_~nmemb_110 v_calloc_model_~size_110)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4))) (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2))) (exists ((v_calloc_model_~ptr~0.base_99 (_ BitVec 32))) (and (or (exists ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_109 (_ BitVec 32)) (v_calloc_model_~nmemb_109 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_old(#length)| v_calloc_model_~ptr~0.base_99 (bvmul v_calloc_model_~nmemb_109 v_calloc_model_~size_109)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4)))) (not (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| v_calloc_model_~ptr~0.base_99))))))))) is different from true [2021-08-30 17:07:03,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-08-30 17:07:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 4 not checked. [2021-08-30 17:07:03,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:07:03,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439188979] [2021-08-30 17:07:03,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439188979] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:07:03,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:07:03,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-08-30 17:07:03,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172934639] [2021-08-30 17:07:03,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-30 17:07:03,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:07:03,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-30 17:07:03,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=353, Unknown=11, NotChecked=78, Total=506 [2021-08-30 17:07:03,194 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand has 23 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:07:06,782 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (= |c_#length| |c_old(#length)|) (forall ((v_calloc_model_~ptr~0.base_100 (_ BitVec 32)) (v_l2_insert_~list.base_BEFORE_CALL_4 (_ BitVec 32)) (v_l2_insert_~list.offset_BEFORE_CALL_2 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_calloc_model_~ptr~0.base_100)))) (and (forall ((v_calloc_model_~nmemb_110 (_ BitVec 32)) (|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_110 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_#length| v_calloc_model_~ptr~0.base_100 (bvmul v_calloc_model_~nmemb_110 v_calloc_model_~size_110)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4))) (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2))) (exists ((v_calloc_model_~ptr~0.base_99 (_ BitVec 32))) (and (or (exists ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_109 (_ BitVec 32)) (v_calloc_model_~nmemb_109 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_old(#length)| v_calloc_model_~ptr~0.base_99 (bvmul v_calloc_model_~nmemb_109 v_calloc_model_~size_109)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4)))) (not (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| v_calloc_model_~ptr~0.base_99)))))))))) is different from false [2021-08-30 17:07:08,881 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_l2_insert_~list.base_BEFORE_CALL_4 (_ BitVec 32)) (v_l2_insert_~list.offset_BEFORE_CALL_2 (_ BitVec 32))) (or (exists ((v_calloc_model_~ptr~0.base_99 (_ BitVec 32))) (and (or (exists ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_109 (_ BitVec 32)) (v_calloc_model_~nmemb_109 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_old(#length)| v_calloc_model_~ptr~0.base_99 (bvmul v_calloc_model_~nmemb_109 v_calloc_model_~size_109)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4)))) (not (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| v_calloc_model_~ptr~0.base_99))))))) (and (forall ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32))) (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store |c_#length| |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4))) (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_calloc_model_~ptr~0.base))) (_ bv1 1))) (exists ((calloc_model_~nmemb (_ BitVec 32)) (calloc_model_~ptr~0.base (_ BitVec 32)) (calloc_model_~size (_ BitVec 32))) (and (= |c_#length| (store |c_old(#length)| calloc_model_~ptr~0.base (bvmul calloc_model_~nmemb calloc_model_~size))) (= (_ bv0 1) (bvneg (select |c_old(#valid)| calloc_model_~ptr~0.base))))) (= c_calloc_model_~ptr~0.offset (_ bv0 32)) (= (select |c_#length| c_calloc_model_~ptr~0.base) (bvmul |c_calloc_model_#in~nmemb| |c_calloc_model_#in~size|))) is different from false [2021-08-30 17:07:10,934 WARN L838 $PredicateComparison]: unable to prove that (and (= (bvmul |c_calloc_model_#in~nmemb| |c_calloc_model_#in~size|) (select |c_#length| |c_calloc_model_#res.base|)) (forall ((v_l2_insert_~list.base_BEFORE_CALL_4 (_ BitVec 32)) (v_l2_insert_~list.offset_BEFORE_CALL_2 (_ BitVec 32))) (or (exists ((v_calloc_model_~ptr~0.base_99 (_ BitVec 32))) (and (or (exists ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_109 (_ BitVec 32)) (v_calloc_model_~nmemb_109 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_old(#length)| v_calloc_model_~ptr~0.base_99 (bvmul v_calloc_model_~nmemb_109 v_calloc_model_~size_109)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4)))) (not (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| v_calloc_model_~ptr~0.base_99))))))) (and (forall ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32))) (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store |c_#length| |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4))) (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2))))) (exists ((calloc_model_~nmemb (_ BitVec 32)) (calloc_model_~ptr~0.base (_ BitVec 32)) (calloc_model_~size (_ BitVec 32))) (and (= |c_#length| (store |c_old(#length)| calloc_model_~ptr~0.base (bvmul calloc_model_~nmemb calloc_model_~size))) (= (_ bv0 1) (bvneg (select |c_old(#valid)| calloc_model_~ptr~0.base))))) (= |c_calloc_model_#res.offset| (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| |c_calloc_model_#res.base|)))) (_ bv1 1)))) is different from false [2021-08-30 17:07:12,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:07:12,179 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2021-08-30 17:07:12,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-30 17:07:12,180 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) Word has length 57 [2021-08-30 17:07:12,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:07:12,181 INFO L225 Difference]: With dead ends: 149 [2021-08-30 17:07:12,181 INFO L226 Difference]: Without dead ends: 149 [2021-08-30 17:07:12,181 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 35851.47ms TimeCoverageRelationStatistics Valid=100, Invalid=506, Unknown=14, NotChecked=250, Total=870 [2021-08-30 17:07:12,182 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1196.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.75ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1163 IncrementalHoareTripleChecker+Unchecked, 1336.88ms IncrementalHoareTripleChecker+Time [2021-08-30 17:07:12,182 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 95 Invalid, 1543 Unknown, 0 Unchecked, 7.75ms Time], IncrementalHoareTripleChecker [11 Valid, 369 Invalid, 0 Unknown, 1163 Unchecked, 1336.88ms Time] [2021-08-30 17:07:12,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-08-30 17:07:12,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 135. [2021-08-30 17:07:12,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 117 states have internal predecessors, (121), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-08-30 17:07:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2021-08-30 17:07:12,185 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 57 [2021-08-30 17:07:12,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:07:12,186 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2021-08-30 17:07:12,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:07:12,186 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2021-08-30 17:07:12,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-30 17:07:12,186 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:07:12,186 INFO L513 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:07:12,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-08-30 17:07:12,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:07:12,396 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting l2_insertErr7REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:07:12,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:07:12,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2084722741, now seen corresponding path program 1 times [2021-08-30 17:07:12,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:07:12,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530184037] [2021-08-30 17:07:12,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:12,397 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:07:12,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:07:12,398 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:07:12,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-08-30 17:07:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:07:12,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-30 17:07:12,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:07:12,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:07:12,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-08-30 17:07:14,520 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:07:14,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-08-30 17:07:14,528 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 17:07:14,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2021-08-30 17:07:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-08-30 17:07:14,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:07:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-08-30 17:07:21,529 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:07:21,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530184037] [2021-08-30 17:07:21,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530184037] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:07:21,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:07:21,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12 [2021-08-30 17:07:21,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037206086] [2021-08-30 17:07:21,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 17:07:21,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:07:21,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 17:07:21,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2021-08-30 17:07:21,531 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-30 17:07:23,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:07:23,528 INFO L93 Difference]: Finished difference Result 134 states and 141 transitions. [2021-08-30 17:07:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 17:07:23,529 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2021-08-30 17:07:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:07:23,529 INFO L225 Difference]: With dead ends: 134 [2021-08-30 17:07:23,529 INFO L226 Difference]: Without dead ends: 134 [2021-08-30 17:07:23,530 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 6408.77ms TimeCoverageRelationStatistics Valid=41, Invalid=140, Unknown=1, NotChecked=0, Total=182 [2021-08-30 17:07:23,530 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1498.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.67ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 543 IncrementalHoareTripleChecker+Unchecked, 1781.02ms IncrementalHoareTripleChecker+Time [2021-08-30 17:07:23,530 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 94 Invalid, 809 Unknown, 0 Unchecked, 4.67ms Time], IncrementalHoareTripleChecker [1 Valid, 265 Invalid, 0 Unknown, 543 Unchecked, 1781.02ms Time] [2021-08-30 17:07:23,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-08-30 17:07:23,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-08-30 17:07:23,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 78 states have (on average 1.5384615384615385) internal successors, (120), 116 states have internal predecessors, (120), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-08-30 17:07:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 141 transitions. [2021-08-30 17:07:23,533 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 141 transitions. Word has length 58 [2021-08-30 17:07:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:07:23,533 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 141 transitions. [2021-08-30 17:07:23,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-30 17:07:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 141 transitions. [2021-08-30 17:07:23,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-30 17:07:23,534 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:07:23,534 INFO L513 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:07:23,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-08-30 17:07:23,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:07:23,738 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting l2_insertErr8REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:07:23,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:07:23,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1963792725, now seen corresponding path program 1 times [2021-08-30 17:07:23,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:07:23,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161168738] [2021-08-30 17:07:23,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:23,739 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:07:23,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:07:23,739 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:07:23,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-08-30 17:07:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:07:23,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 17:07:23,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:07:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-08-30 17:07:24,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:07:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-08-30 17:07:24,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:07:24,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161168738] [2021-08-30 17:07:24,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161168738] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:07:24,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:07:24,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:07:24,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521450078] [2021-08-30 17:07:24,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:07:24,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:07:24,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:07:24,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:07:24,119 INFO L87 Difference]: Start difference. First operand 134 states and 141 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 17:07:24,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:07:24,742 INFO L93 Difference]: Finished difference Result 133 states and 140 transitions. [2021-08-30 17:07:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:07:24,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2021-08-30 17:07:24,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:07:24,744 INFO L225 Difference]: With dead ends: 133 [2021-08-30 17:07:24,744 INFO L226 Difference]: Without dead ends: 133 [2021-08-30 17:07:24,744 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:07:24,744 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 548.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 611.91ms IncrementalHoareTripleChecker+Time [2021-08-30 17:07:24,744 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 29 Invalid, 193 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 611.91ms Time] [2021-08-30 17:07:24,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-08-30 17:07:24,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-08-30 17:07:24,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 78 states have (on average 1.5256410256410255) internal successors, (119), 115 states have internal predecessors, (119), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-08-30 17:07:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 140 transitions. [2021-08-30 17:07:24,747 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 140 transitions. Word has length 60 [2021-08-30 17:07:24,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:07:24,747 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 140 transitions. [2021-08-30 17:07:24,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 17:07:24,748 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 140 transitions. [2021-08-30 17:07:24,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-30 17:07:24,748 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:07:24,748 INFO L513 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:07:24,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-08-30 17:07:24,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:07:24,949 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting l2_insertErr9REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:07:24,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:07:24,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1963792724, now seen corresponding path program 1 times [2021-08-30 17:07:24,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:07:24,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290674425] [2021-08-30 17:07:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:24,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:07:24,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:07:24,950 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:07:24,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-08-30 17:07:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:07:25,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 17:07:25,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:07:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-08-30 17:07:25,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:07:25,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-08-30 17:07:26,331 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-08-30 17:07:26,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:07:26,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290674425] [2021-08-30 17:07:26,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290674425] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:07:26,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:07:26,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-08-30 17:07:26,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273721018] [2021-08-30 17:07:26,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-30 17:07:26,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:07:26,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-30 17:07:26,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-08-30 17:07:26,333 INFO L87 Difference]: Start difference. First operand 133 states and 140 transitions. Second operand has 16 states, 15 states have (on average 3.0) internal successors, (45), 12 states have internal predecessors, (45), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-08-30 17:07:30,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:07:30,482 INFO L93 Difference]: Finished difference Result 132 states and 139 transitions. [2021-08-30 17:07:30,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:07:30,483 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 12 states have internal predecessors, (45), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 60 [2021-08-30 17:07:30,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:07:30,484 INFO L225 Difference]: With dead ends: 132 [2021-08-30 17:07:30,484 INFO L226 Difference]: Without dead ends: 132 [2021-08-30 17:07:30,484 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 827.27ms TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-08-30 17:07:30,485 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 54 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3615.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.38ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3955.46ms IncrementalHoareTripleChecker+Time [2021-08-30 17:07:30,485 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 158 Invalid, 1115 Unknown, 0 Unchecked, 12.38ms Time], IncrementalHoareTripleChecker [2 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 3955.46ms Time] [2021-08-30 17:07:30,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-30 17:07:30,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-08-30 17:07:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 114 states have internal predecessors, (118), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-08-30 17:07:30,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 139 transitions. [2021-08-30 17:07:30,488 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 139 transitions. Word has length 60 [2021-08-30 17:07:30,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:07:30,488 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 139 transitions. [2021-08-30 17:07:30,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 12 states have internal predecessors, (45), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-08-30 17:07:30,488 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 139 transitions. [2021-08-30 17:07:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-08-30 17:07:30,489 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:07:30,489 INFO L513 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:07:30,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-08-30 17:07:30,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:07:30,698 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting l1_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:07:30,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:07:30,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1956658940, now seen corresponding path program 1 times [2021-08-30 17:07:30,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:07:30,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848679928] [2021-08-30 17:07:30,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:30,699 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:07:30,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:07:30,700 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:07:30,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-08-30 17:07:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:07:30,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-30 17:07:30,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:07:31,135 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-08-30 17:07:31,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-08-30 17:07:31,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2021-08-30 17:07:31,827 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-30 17:07:31,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-08-30 17:07:32,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:07:32,990 INFO L354 Elim1Store]: treesize reduction 81, result has 17.3 percent of original size [2021-08-30 17:07:32,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 51 [2021-08-30 17:07:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-08-30 17:07:33,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:07:34,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:07:34,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848679928] [2021-08-30 17:07:34,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:07:34,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [479593270] [2021-08-30 17:07:34,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:34,375 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-30 17:07:34,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-30 17:07:34,379 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-30 17:07:34,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-08-30 17:07:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:07:35,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-30 17:07:35,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:07:35,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:07:35,284 INFO L354 Elim1Store]: treesize reduction 61, result has 32.2 percent of original size [2021-08-30 17:07:35,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 34 [2021-08-30 17:07:36,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-08-30 17:07:36,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-08-30 17:07:37,116 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 17:07:37,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2021-08-30 17:07:37,327 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 17:07:37,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-08-30 17:07:37,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-08-30 17:07:39,355 INFO L354 Elim1Store]: treesize reduction 74, result has 24.5 percent of original size [2021-08-30 17:07:39,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 65 [2021-08-30 17:07:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-08-30 17:07:39,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:07:44,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:07:44,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256390825] [2021-08-30 17:07:44,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:44,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:07:44,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:07:44,727 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:07:44,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-30 17:07:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:07:44,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-30 17:07:44,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:07:45,062 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-08-30 17:07:45,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-08-30 17:07:45,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2021-08-30 17:07:45,588 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-30 17:07:45,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2021-08-30 17:07:45,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:07:46,242 INFO L354 Elim1Store]: treesize reduction 81, result has 17.3 percent of original size [2021-08-30 17:07:46,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 54 [2021-08-30 17:07:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-08-30 17:07:46,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:07:47,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:07:47,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:07:47,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-30 17:07:47,487 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-30 17:07:47,487 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-30 17:07:47,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION (45 of 46 remaining) [2021-08-30 17:07:47,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION (44 of 46 remaining) [2021-08-30 17:07:47,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION (43 of 46 remaining) [2021-08-30 17:07:47,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION (42 of 46 remaining) [2021-08-30 17:07:47,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION (41 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION (40 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION (39 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION (38 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION (37 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION (36 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION (35 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION (34 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr6REQUIRES_VIOLATION (33 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr7REQUIRES_VIOLATION (32 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr8REQUIRES_VIOLATION (31 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr9REQUIRES_VIOLATION (30 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION (29 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION (28 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (27 of 46 remaining) [2021-08-30 17:07:47,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (26 of 46 remaining) [2021-08-30 17:07:47,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (25 of 46 remaining) [2021-08-30 17:07:47,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (24 of 46 remaining) [2021-08-30 17:07:47,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (23 of 46 remaining) [2021-08-30 17:07:47,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (22 of 46 remaining) [2021-08-30 17:07:47,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (21 of 46 remaining) [2021-08-30 17:07:47,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (20 of 46 remaining) [2021-08-30 17:07:47,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (19 of 46 remaining) [2021-08-30 17:07:47,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (18 of 46 remaining) [2021-08-30 17:07:47,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE (17 of 46 remaining) [2021-08-30 17:07:47,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11ASSERT_VIOLATIONMEMORY_FREE (16 of 46 remaining) [2021-08-30 17:07:47,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ASSERT_VIOLATIONMEMORY_FREE (15 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (14 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (13 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (12 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (11 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17ENSURES_VIOLATIONMEMORY_LEAK (10 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION (9 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION (8 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2REQUIRES_VIOLATION (7 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3REQUIRES_VIOLATION (6 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE (5 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE (4 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE (3 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 46 remaining) [2021-08-30 17:07:47,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr9ASSERT_VIOLATIONMEMORY_FREE (0 of 46 remaining) [2021-08-30 17:07:47,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-08-30 17:07:47,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-08-30 17:07:47,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-08-30 17:07:48,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:07:48,104 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:07:48,107 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:07:48,108 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:07:48,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:07:48 BoogieIcfgContainer [2021-08-30 17:07:48,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:07:48,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:07:48,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:07:48,115 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:07:48,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:44" (3/4) ... [2021-08-30 17:07:48,118 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:07:48,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:07:48,118 INFO L158 Benchmark]: Toolchain (without parser) took 184875.08ms. Allocated memory was 54.5MB in the beginning and 81.8MB in the end (delta: 27.3MB). Free memory was 32.2MB in the beginning and 47.8MB in the end (delta: -15.6MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2021-08-30 17:07:48,119 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 36.9MB in the beginning and 36.8MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:07:48,119 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.94ms. Allocated memory is still 54.5MB. Free memory was 32.0MB in the beginning and 25.3MB in the end (delta: 6.8MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2021-08-30 17:07:48,120 INFO L158 Benchmark]: Boogie Preprocessor took 62.88ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 25.3MB in the beginning and 47.5MB in the end (delta: -22.3MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-08-30 17:07:48,120 INFO L158 Benchmark]: RCFGBuilder took 438.57ms. Allocated memory is still 67.1MB. Free memory was 47.5MB in the beginning and 36.4MB in the end (delta: 11.1MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2021-08-30 17:07:48,120 INFO L158 Benchmark]: TraceAbstraction took 184031.01ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 35.8MB in the beginning and 48.5MB in the end (delta: -12.7MB). Peak memory consumption was 35.4MB. Max. memory is 16.1GB. [2021-08-30 17:07:48,120 INFO L158 Benchmark]: Witness Printer took 3.57ms. Allocated memory is still 81.8MB. Free memory was 48.5MB in the beginning and 47.8MB in the end (delta: 698.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:07:48,123 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 36.9MB in the beginning and 36.8MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.94ms. Allocated memory is still 54.5MB. Free memory was 32.0MB in the beginning and 25.3MB in the end (delta: 6.8MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.88ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 25.3MB in the beginning and 47.5MB in the end (delta: -22.3MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. * RCFGBuilder took 438.57ms. Allocated memory is still 67.1MB. Free memory was 47.5MB in the beginning and 36.4MB in the end (delta: 11.1MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * TraceAbstraction took 184031.01ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 35.8MB in the beginning and 48.5MB in the end (delta: -12.7MB). Peak memory consumption was 35.4MB. Max. memory is 16.1GB. * Witness Printer took 3.57ms. Allocated memory is still 81.8MB. Free memory was 48.5MB in the beginning and 47.8MB in the end (delta: 698.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L687] static struct L1 *list; [L689] CALL l1_insert(&list) [L676] CALL, EXPR calloc_model(1U, sizeof *item) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L676] RET, EXPR calloc_model(1U, sizeof *item) [L676] struct L1 *item = calloc_model(1U, sizeof *item); [L677] COND FALSE !(!item) [L680] CALL l2_insert(&item->l2) [L655] CALL, EXPR calloc_model(1U, sizeof *item) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L655] RET, EXPR calloc_model(1U, sizeof *item) [L655] struct L2 *item = calloc_model(1U, sizeof *item); [L656] COND FALSE !(!item) [L658] item->proto = malloc(119U) [L659] EXPR item->proto [L659] COND FALSE !(!item->proto) [L661] EXPR \read(**list) [L661] item->next = *list [L662] *list = item [L680] RET l2_insert(&item->l2) [L681] COND FALSE !(__VERIFIER_nondet_int()) [L682] \read(**list) - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 659]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 659]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 662]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 662]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 667]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 667]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 145 locations, 46 error locations. Started 1 CEGAR loops. OverallTime: 183979.51ms, OverallIterations: 20, TraceHistogramMax: 16, EmptinessCheckTime: 39.60ms, AutomataDifference: 44274.51ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 9.35ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 291 SdHoareTripleChecker+Valid, 29865.39ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 273 mSDsluCounter, 1489 SdHoareTripleChecker+Invalid, 25974.12ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2710 IncrementalHoareTripleChecker+Unchecked, 10394 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11762 IncrementalHoareTripleChecker+Invalid, 14575 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 250 mSDtfsCounter, 11762 mSolverCounterSat, 83.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1651 GetRequests, 1395 SyntacticMatches, 24 SemanticMatches, 232 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 108124.00ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=16, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 96.29ms AutomataMinimizationTime, 19 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 232.43ms SsaConstructionTime, 1249.29ms SatisfiabilityAnalysisTime, 115054.99ms InterpolantComputationTime, 818 NumberOfCodeBlocks, 756 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1598 ConstructedInterpolants, 139 QuantifiedInterpolants, 6792 SizeOfPredicates, 66 NumberOfNonLiveVariables, 3974 ConjunctsInSsa, 192 ConjunctsInUnsatCore, 38 InterpolantComputations, 17 PerfectInterpolantSequences, 2219/2748 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:07:48,197 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...