./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0235-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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-0235-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fe4e5e6f5af9744dd6ccaf06e804c2ce4d6dd68 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-0235-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fe4e5e6f5af9744dd6ccaf06e804c2ce4d6dd68 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:30:10,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:30:10,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:30:10,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:30:10,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:30:10,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:30:10,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:30:10,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:30:10,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:30:10,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:30:10,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:30:10,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:30:10,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:30:10,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:30:10,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:30:10,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:30:10,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:30:10,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:30:10,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:30:10,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:30:10,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:30:10,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:30:10,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:30:10,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:30:10,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:30:10,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:30:10,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:30:10,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:30:10,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:30:10,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:30:10,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:30:10,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:30:10,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:30:10,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:30:10,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:30:10,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:30:10,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:30:10,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:30:10,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:30:10,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:30:10,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:30:10,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 05:30:10,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:30:10,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:30:10,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:30:10,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:30:10,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:30:10,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:30:10,184 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:30:10,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:30:10,184 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:30:10,185 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:30:10,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:30:10,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:30:10,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:30:10,185 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:30:10,186 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:30:10,186 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:30:10,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:30:10,186 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:30:10,186 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:30:10,186 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:30:10,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:30:10,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:30:10,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:30:10,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:30:10,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:30:10,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:30:10,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 05:30:10,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 05:30:10,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:30:10,188 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fe4e5e6f5af9744dd6ccaf06e804c2ce4d6dd68 [2021-08-27 05:30:10,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:30:10,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:30:10,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:30:10,508 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:30:10,509 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:30:10,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0235-2.i [2021-08-27 05:30:10,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e869291e8/c9c952cdffa64277a30c6f8968693d1c/FLAG736d70231 [2021-08-27 05:30:11,020 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:30:11,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-2.i [2021-08-27 05:30:11,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e869291e8/c9c952cdffa64277a30c6f8968693d1c/FLAG736d70231 [2021-08-27 05:30:11,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e869291e8/c9c952cdffa64277a30c6f8968693d1c [2021-08-27 05:30:11,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:30:11,382 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:30:11,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:30:11,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:30:11,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:30:11,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:30:11" (1/1) ... [2021-08-27 05:30:11,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc84c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:30:11, skipping insertion in model container [2021-08-27 05:30:11,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:30:11" (1/1) ... [2021-08-27 05:30:11,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:30:11,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:30:11,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:30:11,745 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:30:11,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:30:11,856 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:30:11,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:30:11 WrapperNode [2021-08-27 05:30:11,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:30:11,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:30:11,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:30:11,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:30:11,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:30:11" (1/1) ... [2021-08-27 05:30:11,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:30:11" (1/1) ... [2021-08-27 05:30:11,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:30:11" (1/1) ... [2021-08-27 05:30:11,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:30:11" (1/1) ... [2021-08-27 05:30:11,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:30:11" (1/1) ... [2021-08-27 05:30:11,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:30:11" (1/1) ... [2021-08-27 05:30:11,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:30:11" (1/1) ... [2021-08-27 05:30:11,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:30:11,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:30:11,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:30:11,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:30:11,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:30:11" (1/1) ... [2021-08-27 05:30:11,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:30:11,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:30:11,990 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) [2021-08-27 05:30:12,017 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 [2021-08-27 05:30:12,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:30:12,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:30:12,035 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:30:12,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:30:12,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:30:12,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:30:12,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:30:12,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:30:12,037 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-08-27 05:30:12,037 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2021-08-27 05:30:12,037 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_insert [2021-08-27 05:30:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_insert [2021-08-27 05:30:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-08-27 05:30:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-08-27 05:30:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_insert [2021-08-27 05:30:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_destroy [2021-08-27 05:30:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_destroy [2021-08-27 05:30:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-08-27 05:30:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_destroy [2021-08-27 05:30:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2021-08-27 05:30:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:30:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 05:30:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:30:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:30:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:30:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:30:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:30:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:30:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:30:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:30:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:30:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:30:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:30:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:30:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:30:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:30:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:30:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:30:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:30:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:30:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:30:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:30:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:30:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:30:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:30:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:30:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:30:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:30:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:30:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:30:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:30:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:30:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:30:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:30:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:30:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:30:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:30:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:30:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:30:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:30:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:30:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:30:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:30:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:30:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:30:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:30:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:30:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:30:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:30:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:30:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:30:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:30:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:30:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:30:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:30:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:30:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:30:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:30:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:30:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:30:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:30:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:30:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:30:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:30:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:30:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:30:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:30:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:30:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:30:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:30:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:30:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:30:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:30:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:30:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:30:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:30:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:30:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:30:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:30:12,065 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:30:12,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:30:12,065 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:30:12,065 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:30:12,067 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:30:12,067 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:30:12,067 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:30:12,068 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:30:12,068 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:30:12,070 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:30:12,071 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:30:12,071 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:30:12,071 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:30:12,072 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 05:30:12,072 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 05:30:12,072 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 05:30:12,072 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 05:30:12,072 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 05:30:12,079 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 05:30:12,079 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 05:30:12,079 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 05:30:12,080 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 05:30:12,080 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 05:30:12,080 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 05:30:12,080 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 05:30:12,080 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 05:30:12,080 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 05:30:12,080 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 05:30:12,080 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 05:30:12,080 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 05:30:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 05:30:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 05:30:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 05:30:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 05:30:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 05:30:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 05:30:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 05:30:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 05:30:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 05:30:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 05:30:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 05:30:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 05:30:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 05:30:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 05:30:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 05:30:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 05:30:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 05:30:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 05:30:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 05:30:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 05:30:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 05:30:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-08-27 05:30:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-08-27 05:30:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 05:30:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 05:30:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-08-27 05:30:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-08-27 05:30:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-08-27 05:30:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 05:30:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 05:30:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 05:30:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 05:30:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 05:30:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 05:30:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-08-27 05:30:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:30:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 05:30:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 05:30:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2021-08-27 05:30:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure l4_insert [2021-08-27 05:30:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:30:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:30:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure l3_insert [2021-08-27 05:30:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-08-27 05:30:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-08-27 05:30:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure l0_insert [2021-08-27 05:30:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure l4_destroy [2021-08-27 05:30:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:30:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure l3_destroy [2021-08-27 05:30:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-08-27 05:30:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure l1_destroy [2021-08-27 05:30:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2021-08-27 05:30:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:30:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:30:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 05:30:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 05:30:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:30:12,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 05:30:12,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 05:30:12,645 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 05:30:12,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:30:12,887 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-27 05:30:12,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:30:12 BoogieIcfgContainer [2021-08-27 05:30:12,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:30:12,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:30:12,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:30:12,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:30:12,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:30:11" (1/3) ... [2021-08-27 05:30:12,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2141f80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:30:12, skipping insertion in model container [2021-08-27 05:30:12,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:30:11" (2/3) ... [2021-08-27 05:30:12,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2141f80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:30:12, skipping insertion in model container [2021-08-27 05:30:12,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:30:12" (3/3) ... [2021-08-27 05:30:12,895 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0235-2.i [2021-08-27 05:30:12,903 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:30:12,903 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2021-08-27 05:30:12,941 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:30:12,946 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 [2021-08-27 05:30:12,946 INFO L340 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2021-08-27 05:30:12,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 149 states have (on average 1.7583892617449663) internal successors, (262), 231 states have internal predecessors, (262), 25 states have call successors, (25), 15 states have call predecessors, (25), 15 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-08-27 05:30:12,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:30:12,970 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:30:12,970 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:30:12,971 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:30:12,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:30:12,975 INFO L82 PathProgramCache]: Analyzing trace with hash 21843945, now seen corresponding path program 1 times [2021-08-27 05:30:12,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:30:12,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527157301] [2021-08-27 05:30:12,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:12,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:30:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:30:13,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:30:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:30:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:30:13,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:30:13,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527157301] [2021-08-27 05:30:13,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527157301] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:30:13,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:30:13,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:30:13,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180410608] [2021-08-27 05:30:13,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:30:13,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:30:13,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:30:13,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:30:13,230 INFO L87 Difference]: Start difference. First operand has 271 states, 149 states have (on average 1.7583892617449663) internal successors, (262), 231 states have internal predecessors, (262), 25 states have call successors, (25), 15 states have call predecessors, (25), 15 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) 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) [2021-08-27 05:30:13,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:30:13,904 INFO L93 Difference]: Finished difference Result 381 states and 440 transitions. [2021-08-27 05:30:13,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:30:13,906 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 [2021-08-27 05:30:13,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:30:13,916 INFO L225 Difference]: With dead ends: 381 [2021-08-27 05:30:13,917 INFO L226 Difference]: Without dead ends: 378 [2021-08-27 05:30:13,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:30:13,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-08-27 05:30:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 268. [2021-08-27 05:30:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 143 states have (on average 1.7412587412587412) internal successors, (249), 229 states have internal predecessors, (249), 25 states have call successors, (25), 15 states have call predecessors, (25), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-08-27 05:30:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 298 transitions. [2021-08-27 05:30:13,969 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 298 transitions. Word has length 7 [2021-08-27 05:30:13,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:30:13,970 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 298 transitions. [2021-08-27 05:30:13,970 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) [2021-08-27 05:30:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 298 transitions. [2021-08-27 05:30:13,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 05:30:13,971 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:30:13,971 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:30:13,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 05:30:13,971 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:30:13,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:30:13,972 INFO L82 PathProgramCache]: Analyzing trace with hash -615984945, now seen corresponding path program 1 times [2021-08-27 05:30:13,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:30:13,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94479067] [2021-08-27 05:30:13,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:13,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:30:13,993 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:30:13,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051197174] [2021-08-27 05:30:13,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:13,994 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:30:13,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:30:13,996 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) [2021-08-27 05:30:14,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 05:30:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:30:14,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:30:14,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:30:14,321 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 [2021-08-27 05:30:14,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:30:14,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:30:14,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94479067] [2021-08-27 05:30:14,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:30:14,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051197174] [2021-08-27 05:30:14,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051197174] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:30:14,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:30:14,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 05:30:14,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265209795] [2021-08-27 05:30:14,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:30:14,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:30:14,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:30:14,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:30:14,331 INFO L87 Difference]: Start difference. First operand 268 states and 298 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:30:14,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:30:14,449 INFO L93 Difference]: Finished difference Result 267 states and 297 transitions. [2021-08-27 05:30:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:30:14,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 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 12 [2021-08-27 05:30:14,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:30:14,451 INFO L225 Difference]: With dead ends: 267 [2021-08-27 05:30:14,451 INFO L226 Difference]: Without dead ends: 267 [2021-08-27 05:30:14,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:30:14,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-08-27 05:30:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-08-27 05:30:14,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 143 states have (on average 1.7342657342657342) internal successors, (248), 228 states have internal predecessors, (248), 25 states have call successors, (25), 15 states have call predecessors, (25), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-08-27 05:30:14,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 297 transitions. [2021-08-27 05:30:14,463 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 297 transitions. Word has length 12 [2021-08-27 05:30:14,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:30:14,463 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 297 transitions. [2021-08-27 05:30:14,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:30:14,463 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 297 transitions. [2021-08-27 05:30:14,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 05:30:14,464 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:30:14,464 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:30:14,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 05:30:14,689 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 [2021-08-27 05:30:14,689 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:30:14,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:30:14,689 INFO L82 PathProgramCache]: Analyzing trace with hash -615984944, now seen corresponding path program 1 times [2021-08-27 05:30:14,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:30:14,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175953775] [2021-08-27 05:30:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:14,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:30:14,705 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:30:14,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595353671] [2021-08-27 05:30:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:14,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:30:14,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:30:14,707 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) [2021-08-27 05:30:14,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 05:30:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:30:14,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 05:30:14,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:30:15,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-08-27 05:30:15,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:30:15,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:30:15,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175953775] [2021-08-27 05:30:15,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:30:15,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595353671] [2021-08-27 05:30:15,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595353671] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:30:15,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:30:15,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:30:15,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633221217] [2021-08-27 05:30:15,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:30:15,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:30:15,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:30:15,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:30:15,085 INFO L87 Difference]: Start difference. First operand 267 states and 297 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:30:15,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:30:15,273 INFO L93 Difference]: Finished difference Result 266 states and 296 transitions. [2021-08-27 05:30:15,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 05:30:15,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (5), 3 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 12 [2021-08-27 05:30:15,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:30:15,276 INFO L225 Difference]: With dead ends: 266 [2021-08-27 05:30:15,277 INFO L226 Difference]: Without dead ends: 266 [2021-08-27 05:30:15,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:30:15,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-08-27 05:30:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-08-27 05:30:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 142 states have (on average 1.7394366197183098) internal successors, (247), 227 states have internal predecessors, (247), 25 states have call successors, (25), 15 states have call predecessors, (25), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-08-27 05:30:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 296 transitions. [2021-08-27 05:30:15,306 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 296 transitions. Word has length 12 [2021-08-27 05:30:15,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:30:15,307 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 296 transitions. [2021-08-27 05:30:15,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:30:15,307 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 296 transitions. [2021-08-27 05:30:15,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-08-27 05:30:15,311 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:30:15,311 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:30:15,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 05:30:15,528 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 [2021-08-27 05:30:15,529 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:30:15,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:30:15,530 INFO L82 PathProgramCache]: Analyzing trace with hash 66906277, now seen corresponding path program 1 times [2021-08-27 05:30:15,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:30:15,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376034521] [2021-08-27 05:30:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:15,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:30:15,559 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:30:15,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95335829] [2021-08-27 05:30:15,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:15,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:30:15,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:30:15,565 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) [2021-08-27 05:30:15,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 05:30:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:30:15,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-27 05:30:15,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:30:16,340 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 [2021-08-27 05:30:16,504 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 05:30:16,504 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 14 [2021-08-27 05:30:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 113 proven. 7 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-08-27 05:30:16,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:30:16,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376034521] [2021-08-27 05:30:16,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:30:16,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95335829] [2021-08-27 05:30:16,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95335829] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:30:16,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:30:16,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-08-27 05:30:16,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632217006] [2021-08-27 05:30:16,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 05:30:16,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:30:16,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 05:30:16,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-08-27 05:30:16,527 INFO L87 Difference]: Start difference. First operand 266 states and 296 transitions. Second operand has 14 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-08-27 05:30:17,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:30:17,895 INFO L93 Difference]: Finished difference Result 461 states and 543 transitions. [2021-08-27 05:30:17,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 05:30:17,896 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2021-08-27 05:30:17,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:30:17,899 INFO L225 Difference]: With dead ends: 461 [2021-08-27 05:30:17,899 INFO L226 Difference]: Without dead ends: 461 [2021-08-27 05:30:17,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 216.4ms TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-08-27 05:30:17,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-08-27 05:30:17,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 264. [2021-08-27 05:30:17,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 142 states have (on average 1.7253521126760563) internal successors, (245), 225 states have internal predecessors, (245), 25 states have call successors, (25), 15 states have call predecessors, (25), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-08-27 05:30:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 294 transitions. [2021-08-27 05:30:17,912 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 294 transitions. Word has length 123 [2021-08-27 05:30:17,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:30:17,913 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 294 transitions. [2021-08-27 05:30:17,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-08-27 05:30:17,913 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 294 transitions. [2021-08-27 05:30:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-08-27 05:30:17,914 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:30:17,914 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:30:17,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 05:30:18,128 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 [2021-08-27 05:30:18,129 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l4_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:30:18,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:30:18,129 INFO L82 PathProgramCache]: Analyzing trace with hash 66906278, now seen corresponding path program 1 times [2021-08-27 05:30:18,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:30:18,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893830730] [2021-08-27 05:30:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:18,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:30:18,172 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:30:18,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847287794] [2021-08-27 05:30:18,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:18,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:30:18,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:30:18,174 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) [2021-08-27 05:30:18,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-27 05:30:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:30:18,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 55 conjunts are in the unsatisfiable core [2021-08-27 05:30:18,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:30:18,765 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 [2021-08-27 05:30:19,454 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 14 treesize of output 13 [2021-08-27 05:30:19,460 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 [2021-08-27 05:30:19,697 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-08-27 05:30:19,698 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 36 treesize of output 36 [2021-08-27 05:30:19,715 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:30:19,716 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 35 treesize of output 35 [2021-08-27 05:30:22,502 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 98 proven. 13 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-08-27 05:30:22,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:30:22,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893830730] [2021-08-27 05:30:22,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:30:22,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847287794] [2021-08-27 05:30:22,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847287794] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:30:22,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:30:22,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-08-27 05:30:22,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239954792] [2021-08-27 05:30:22,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 05:30:22,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:30:22,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 05:30:22,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-08-27 05:30:22,504 INFO L87 Difference]: Start difference. First operand 264 states and 294 transitions. Second operand has 16 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-08-27 05:30:25,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:30:25,794 INFO L93 Difference]: Finished difference Result 376 states and 439 transitions. [2021-08-27 05:30:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 05:30:25,796 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 123 [2021-08-27 05:30:25,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:30:25,798 INFO L225 Difference]: With dead ends: 376 [2021-08-27 05:30:25,798 INFO L226 Difference]: Without dead ends: 376 [2021-08-27 05:30:25,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3532.3ms TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2021-08-27 05:30:25,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-08-27 05:30:25,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 262. [2021-08-27 05:30:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 142 states have (on average 1.7112676056338028) internal successors, (243), 223 states have internal predecessors, (243), 25 states have call successors, (25), 15 states have call predecessors, (25), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-08-27 05:30:25,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 292 transitions. [2021-08-27 05:30:25,808 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 292 transitions. Word has length 123 [2021-08-27 05:30:25,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:30:25,809 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 292 transitions. [2021-08-27 05:30:25,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-08-27 05:30:25,809 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 292 transitions. [2021-08-27 05:30:25,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-08-27 05:30:25,810 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:30:25,811 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:30:25,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-27 05:30:26,028 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 [2021-08-27 05:30:26,028 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting l4_insertErr2REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:30:26,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:30:26,029 INFO L82 PathProgramCache]: Analyzing trace with hash -127564634, now seen corresponding path program 1 times [2021-08-27 05:30:26,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:30:26,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707232893] [2021-08-27 05:30:26,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:26,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:30:26,057 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:30:26,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515683363] [2021-08-27 05:30:26,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:26,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:30:26,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:30:26,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:30:26,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-27 05:30:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:30:26,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 41 conjunts are in the unsatisfiable core [2021-08-27 05:30:26,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:30:26,819 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 [2021-08-27 05:30:26,932 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 05:30:26,932 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 14 [2021-08-27 05:30:26,977 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 [2021-08-27 05:30:27,081 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 05:30:27,081 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 14 [2021-08-27 05:30:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 139 proven. 14 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-08-27 05:30:27,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:30:27,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707232893] [2021-08-27 05:30:27,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:30:27,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515683363] [2021-08-27 05:30:27,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515683363] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:30:27,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:30:27,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-08-27 05:30:27,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410145865] [2021-08-27 05:30:27,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 05:30:27,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:30:27,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 05:30:27,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-08-27 05:30:27,114 INFO L87 Difference]: Start difference. First operand 262 states and 292 transitions. Second operand has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-08-27 05:30:28,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:30:28,570 INFO L93 Difference]: Finished difference Result 456 states and 538 transitions. [2021-08-27 05:30:28,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-27 05:30:28,570 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 125 [2021-08-27 05:30:28,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:30:28,575 INFO L225 Difference]: With dead ends: 456 [2021-08-27 05:30:28,575 INFO L226 Difference]: Without dead ends: 456 [2021-08-27 05:30:28,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 107 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 357.9ms TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-08-27 05:30:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-08-27 05:30:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 259. [2021-08-27 05:30:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 142 states have (on average 1.6901408450704225) internal successors, (240), 220 states have internal predecessors, (240), 25 states have call successors, (25), 15 states have call predecessors, (25), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-08-27 05:30:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 289 transitions. [2021-08-27 05:30:28,586 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 289 transitions. Word has length 125 [2021-08-27 05:30:28,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:30:28,586 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 289 transitions. [2021-08-27 05:30:28,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-08-27 05:30:28,586 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 289 transitions. [2021-08-27 05:30:28,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-08-27 05:30:28,588 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:30:28,588 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:30:28,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-08-27 05:30:28,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:30:28,801 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting l4_insertErr3REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:30:28,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:30:28,801 INFO L82 PathProgramCache]: Analyzing trace with hash -127564633, now seen corresponding path program 1 times [2021-08-27 05:30:28,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:30:28,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731619205] [2021-08-27 05:30:28,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:28,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:30:28,820 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:30:28,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464107601] [2021-08-27 05:30:28,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:28,820 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:30:28,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:30:28,821 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:30:28,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-27 05:30:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:30:29,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 83 conjunts are in the unsatisfiable core [2021-08-27 05:30:29,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:30:29,499 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 [2021-08-27 05:30:30,251 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 20 treesize of output 19 [2021-08-27 05:30:30,269 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 19 treesize of output 16 [2021-08-27 05:30:30,642 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-08-27 05:30:30,643 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 42 treesize of output 42 [2021-08-27 05:30:30,670 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:30:30,671 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 41 treesize of output 45 [2021-08-27 05:30:30,932 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 14 treesize of output 13 [2021-08-27 05:30:30,934 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 [2021-08-27 05:30:31,215 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-08-27 05:30:31,216 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 52 treesize of output 55 [2021-08-27 05:30:31,245 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-27 05:30:31,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 53 [2021-08-27 05:30:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 125 proven. 35 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-08-27 05:30:37,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:30:37,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731619205] [2021-08-27 05:30:37,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:30:37,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464107601] [2021-08-27 05:30:37,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464107601] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:30:37,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:30:37,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-08-27 05:30:37,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571594672] [2021-08-27 05:30:37,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 05:30:37,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:30:37,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 05:30:37,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=399, Unknown=2, NotChecked=0, Total=462 [2021-08-27 05:30:37,601 INFO L87 Difference]: Start difference. First operand 259 states and 289 transitions. Second operand has 22 states, 15 states have (on average 3.4) internal successors, (51), 17 states have internal predecessors, (51), 9 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-08-27 05:30:59,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:30:59,579 INFO L93 Difference]: Finished difference Result 453 states and 535 transitions. [2021-08-27 05:30:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-27 05:30:59,579 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 15 states have (on average 3.4) internal successors, (51), 17 states have internal predecessors, (51), 9 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 125 [2021-08-27 05:30:59,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:30:59,582 INFO L225 Difference]: With dead ends: 453 [2021-08-27 05:30:59,582 INFO L226 Difference]: Without dead ends: 453 [2021-08-27 05:30:59,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 101 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 18043.7ms TimeCoverageRelationStatistics Valid=160, Invalid=1094, Unknown=6, NotChecked=0, Total=1260 [2021-08-27 05:30:59,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-08-27 05:30:59,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 256. [2021-08-27 05:30:59,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 142 states have (on average 1.6690140845070423) internal successors, (237), 217 states have internal predecessors, (237), 25 states have call successors, (25), 15 states have call predecessors, (25), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-08-27 05:30:59,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 286 transitions. [2021-08-27 05:30:59,593 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 286 transitions. Word has length 125 [2021-08-27 05:30:59,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:30:59,593 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 286 transitions. [2021-08-27 05:30:59,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 15 states have (on average 3.4) internal successors, (51), 17 states have internal predecessors, (51), 9 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-08-27 05:30:59,594 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 286 transitions. [2021-08-27 05:30:59,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-08-27 05:30:59,595 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:30:59,595 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:30:59,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-27 05:30:59,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:30:59,821 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting l3_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:30:59,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:30:59,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1388057907, now seen corresponding path program 1 times [2021-08-27 05:30:59,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:30:59,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227268726] [2021-08-27 05:30:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:59,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:30:59,851 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:30:59,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532344784] [2021-08-27 05:30:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:59,865 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:30:59,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:30:59,866 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:30:59,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-27 05:31:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:31:00,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 52 conjunts are in the unsatisfiable core [2021-08-27 05:31:00,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:31:00,685 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 12 treesize of output 9 [2021-08-27 05:31:00,837 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:31:00,839 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 [2021-08-27 05:31:00,924 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 [2021-08-27 05:31:01,060 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 [2021-08-27 05:31:01,233 INFO L354 Elim1Store]: treesize reduction 82, result has 16.3 percent of original size [2021-08-27 05:31:01,233 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 24 treesize of output 31 [2021-08-27 05:31:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 141 proven. 41 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-08-27 05:31:01,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:31:01,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227268726] [2021-08-27 05:31:01,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:31:01,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532344784] [2021-08-27 05:31:01,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532344784] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:31:01,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:31:01,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-08-27 05:31:01,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94947711] [2021-08-27 05:31:01,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-27 05:31:01,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:31:01,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-27 05:31:01,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-08-27 05:31:01,292 INFO L87 Difference]: Start difference. First operand 256 states and 286 transitions. Second operand has 20 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 8 states have call successors, (18), 4 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2021-08-27 05:31:02,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:31:02,934 INFO L93 Difference]: Finished difference Result 450 states and 532 transitions. [2021-08-27 05:31:02,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-27 05:31:02,937 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 8 states have call successors, (18), 4 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) Word has length 133 [2021-08-27 05:31:02,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:31:02,939 INFO L225 Difference]: With dead ends: 450 [2021-08-27 05:31:02,939 INFO L226 Difference]: Without dead ends: 450 [2021-08-27 05:31:02,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 111 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 433.0ms TimeCoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2021-08-27 05:31:02,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-08-27 05:31:02,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 253. [2021-08-27 05:31:02,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 142 states have (on average 1.647887323943662) internal successors, (234), 214 states have internal predecessors, (234), 25 states have call successors, (25), 15 states have call predecessors, (25), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-08-27 05:31:02,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 283 transitions. [2021-08-27 05:31:02,961 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 283 transitions. Word has length 133 [2021-08-27 05:31:02,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:31:02,962 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 283 transitions. [2021-08-27 05:31:02,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 8 states have call successors, (18), 4 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2021-08-27 05:31:02,963 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 283 transitions. [2021-08-27 05:31:02,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-08-27 05:31:02,967 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:31:02,967 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:31:02,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-27 05:31:03,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:31:03,181 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting l3_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:31:03,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:31:03,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1388057908, now seen corresponding path program 1 times [2021-08-27 05:31:03,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:31:03,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446364160] [2021-08-27 05:31:03,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:03,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:31:03,207 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:31:03,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338012635] [2021-08-27 05:31:03,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:03,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:31:03,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:31:03,215 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:31:03,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-27 05:31:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:31:03,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 95 conjunts are in the unsatisfiable core [2021-08-27 05:31:03,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:31:03,944 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 [2021-08-27 05:31:04,740 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 20 treesize of output 19 [2021-08-27 05:31:04,747 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 19 treesize of output 16 [2021-08-27 05:31:05,103 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-08-27 05:31:05,103 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 42 treesize of output 42 [2021-08-27 05:31:05,131 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:31:05,131 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 41 treesize of output 45 [2021-08-27 05:31:05,342 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 20 treesize of output 19 [2021-08-27 05:31:05,346 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 19 treesize of output 16 [2021-08-27 05:31:05,774 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 14 treesize of output 13 [2021-08-27 05:31:05,776 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 [2021-08-27 05:31:06,235 INFO L354 Elim1Store]: treesize reduction 92, result has 16.4 percent of original size [2021-08-27 05:31:06,236 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 65 treesize of output 70 [2021-08-27 05:31:06,299 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-08-27 05:31:06,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 75 [2021-08-27 05:31:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 120 proven. 66 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-08-27 05:31:13,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:31:13,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446364160] [2021-08-27 05:31:13,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:31:13,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338012635] [2021-08-27 05:31:13,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338012635] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:31:13,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:31:13,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-08-27 05:31:13,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247704762] [2021-08-27 05:31:13,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 05:31:13,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:31:13,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 05:31:13,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=401, Unknown=2, NotChecked=0, Total=462 [2021-08-27 05:31:13,008 INFO L87 Difference]: Start difference. First operand 253 states and 283 transitions. Second operand has 22 states, 16 states have (on average 3.875) internal successors, (62), 18 states have internal predecessors, (62), 10 states have call successors, (21), 4 states have call predecessors, (21), 8 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2021-08-27 05:31:46,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:31:46,307 INFO L93 Difference]: Finished difference Result 464 states and 564 transitions. [2021-08-27 05:31:46,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-27 05:31:46,308 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 3.875) internal successors, (62), 18 states have internal predecessors, (62), 10 states have call successors, (21), 4 states have call predecessors, (21), 8 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) Word has length 133 [2021-08-27 05:31:46,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:31:46,311 INFO L225 Difference]: With dead ends: 464 [2021-08-27 05:31:46,311 INFO L226 Difference]: Without dead ends: 464 [2021-08-27 05:31:46,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 26862.6ms TimeCoverageRelationStatistics Valid=168, Invalid=1305, Unknown=9, NotChecked=0, Total=1482 [2021-08-27 05:31:46,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-08-27 05:31:46,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 266. [2021-08-27 05:31:46,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 151 states have (on average 1.6158940397350994) internal successors, (244), 224 states have internal predecessors, (244), 28 states have call successors, (28), 16 states have call predecessors, (28), 15 states have return successors, (28), 26 states have call predecessors, (28), 27 states have call successors, (28) [2021-08-27 05:31:46,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 300 transitions. [2021-08-27 05:31:46,321 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 300 transitions. Word has length 133 [2021-08-27 05:31:46,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:31:46,322 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 300 transitions. [2021-08-27 05:31:46,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 3.875) internal successors, (62), 18 states have internal predecessors, (62), 10 states have call successors, (21), 4 states have call predecessors, (21), 8 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2021-08-27 05:31:46,322 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 300 transitions. [2021-08-27 05:31:46,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-08-27 05:31:46,324 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:31:46,324 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:31:46,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-27 05:31:46,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-08-27 05:31:46,544 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:31:46,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:31:46,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1163968841, now seen corresponding path program 1 times [2021-08-27 05:31:46,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:31:46,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532109481] [2021-08-27 05:31:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:46,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:31:46,564 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:31:46,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1196158427] [2021-08-27 05:31:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:46,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:31:46,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:31:46,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:31:46,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-27 05:31:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:31:47,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 61 conjunts are in the unsatisfiable core [2021-08-27 05:31:47,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:31:47,493 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 12 treesize of output 9 [2021-08-27 05:31:47,629 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:31:47,630 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 [2021-08-27 05:31:47,696 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 12 treesize of output 9 [2021-08-27 05:31:47,847 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 [2021-08-27 05:31:47,949 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 [2021-08-27 05:31:48,231 INFO L354 Elim1Store]: treesize reduction 158, result has 15.5 percent of original size [2021-08-27 05:31:48,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 32 treesize of output 47 [2021-08-27 05:31:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 111 proven. 69 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-08-27 05:31:51,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:31:51,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532109481] [2021-08-27 05:31:51,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:31:51,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196158427] [2021-08-27 05:31:51,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196158427] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:31:51,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:31:51,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-08-27 05:31:51,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635716920] [2021-08-27 05:31:51,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 05:31:51,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:31:51,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 05:31:51,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=386, Unknown=1, NotChecked=0, Total=462 [2021-08-27 05:31:51,717 INFO L87 Difference]: Start difference. First operand 266 states and 300 transitions. Second operand has 22 states, 17 states have (on average 4.0) internal successors, (68), 18 states have internal predecessors, (68), 9 states have call successors, (19), 4 states have call predecessors, (19), 9 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) [2021-08-27 05:31:53,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:31:53,766 INFO L93 Difference]: Finished difference Result 496 states and 592 transitions. [2021-08-27 05:31:53,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-27 05:31:53,767 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 4.0) internal successors, (68), 18 states have internal predecessors, (68), 9 states have call successors, (19), 4 states have call predecessors, (19), 9 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) Word has length 141 [2021-08-27 05:31:53,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:31:53,769 INFO L225 Difference]: With dead ends: 496 [2021-08-27 05:31:53,769 INFO L226 Difference]: Without dead ends: 496 [2021-08-27 05:31:53,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 117 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 3839.9ms TimeCoverageRelationStatistics Valid=191, Invalid=998, Unknown=1, NotChecked=0, Total=1190 [2021-08-27 05:31:53,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-08-27 05:31:53,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 292. [2021-08-27 05:31:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 171 states have (on average 1.6023391812865497) internal successors, (274), 245 states have internal predecessors, (274), 33 states have call successors, (33), 17 states have call predecessors, (33), 17 states have return successors, (37), 30 states have call predecessors, (37), 32 states have call successors, (37) [2021-08-27 05:31:53,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 344 transitions. [2021-08-27 05:31:53,780 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 344 transitions. Word has length 141 [2021-08-27 05:31:53,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:31:53,781 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 344 transitions. [2021-08-27 05:31:53,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 4.0) internal successors, (68), 18 states have internal predecessors, (68), 9 states have call successors, (19), 4 states have call predecessors, (19), 9 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) [2021-08-27 05:31:53,781 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 344 transitions. [2021-08-27 05:31:53,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-08-27 05:31:53,783 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:31:53,783 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:31:53,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-08-27 05:31:54,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-27 05:31:54,005 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:31:54,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:31:54,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1163968842, now seen corresponding path program 1 times [2021-08-27 05:31:54,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:31:54,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712542492] [2021-08-27 05:31:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:54,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:31:54,025 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:31:54,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153990663] [2021-08-27 05:31:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:54,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:31:54,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:31:54,041 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:31:54,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-27 05:31:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:31:54,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 135 conjunts are in the unsatisfiable core [2021-08-27 05:31:54,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:31:54,970 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 [2021-08-27 05:31:54,984 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 [2021-08-27 05:32:00,938 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 20 treesize of output 19 [2021-08-27 05:32:00,941 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 19 treesize of output 16 [2021-08-27 05:32:01,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:32:01,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712542492] [2021-08-27 05:32:01,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:32:01,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153990663] [2021-08-27 05:32:01,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:32:01,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:32:01,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 05:32:01,263 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-08-27 05:32:01,263 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 05:32:01,267 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION [2021-08-27 05:32:01,269 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:32:01,269 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:32:01,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:32:01,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:32:01,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr0REQUIRES_VIOLATION [2021-08-27 05:32:01,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr1REQUIRES_VIOLATION [2021-08-27 05:32:01,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr2REQUIRES_VIOLATION [2021-08-27 05:32:01,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr3REQUIRES_VIOLATION [2021-08-27 05:32:01,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr4REQUIRES_VIOLATION [2021-08-27 05:32:01,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr5REQUIRES_VIOLATION [2021-08-27 05:32:01,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION [2021-08-27 05:32:01,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION [2021-08-27 05:32:01,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION [2021-08-27 05:32:01,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION [2021-08-27 05:32:01,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION [2021-08-27 05:32:01,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION [2021-08-27 05:32:01,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:32:01,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:32:01,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr5REQUIRES_VIOLATION [2021-08-27 05:32:01,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr6REQUIRES_VIOLATION [2021-08-27 05:32:01,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr9ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION [2021-08-27 05:32:01,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION [2021-08-27 05:32:01,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION [2021-08-27 05:32:01,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION [2021-08-27 05:32:01,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION [2021-08-27 05:32:01,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION [2021-08-27 05:32:01,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION [2021-08-27 05:32:01,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:32:01,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:32:01,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:32:01,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:32:01,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:32:01,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:32:01,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:32:01,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:32:01,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 05:32:01,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 05:32:01,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 05:32:01,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 05:32:01,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 05:32:01,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 05:32:01,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 05:32:01,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 05:32:01,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-08-27 05:32:01,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 05:32:01,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:32:01,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:32:01,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:32:01,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:32:01,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:32:01,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:32:01,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:32:01,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:32:01,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:32:01,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:01,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr0REQUIRES_VIOLATION [2021-08-27 05:32:01,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr1REQUIRES_VIOLATION [2021-08-27 05:32:01,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr2REQUIRES_VIOLATION [2021-08-27 05:32:01,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr3REQUIRES_VIOLATION [2021-08-27 05:32:01,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr4REQUIRES_VIOLATION [2021-08-27 05:32:01,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr5REQUIRES_VIOLATION [2021-08-27 05:32:01,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr0REQUIRES_VIOLATION [2021-08-27 05:32:01,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr1REQUIRES_VIOLATION [2021-08-27 05:32:01,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr2REQUIRES_VIOLATION [2021-08-27 05:32:01,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr3REQUIRES_VIOLATION [2021-08-27 05:32:01,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr4REQUIRES_VIOLATION [2021-08-27 05:32:01,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr5REQUIRES_VIOLATION [2021-08-27 05:32:01,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr6REQUIRES_VIOLATION [2021-08-27 05:32:01,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr7REQUIRES_VIOLATION [2021-08-27 05:32:01,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-27 05:32:01,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-27 05:32:01,513 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:32:01,518 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:32:01,519 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:32:01,519 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:32:01,519 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:32:01,519 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:32:01,520 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:32:01,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:32:01 BoogieIcfgContainer [2021-08-27 05:32:01,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:32:01,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:32:01,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:32:01,537 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:32:01,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:30:12" (3/4) ... [2021-08-27 05:32:01,542 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:32:01,542 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:32:01,543 INFO L168 Benchmark]: Toolchain (without parser) took 110161.73 ms. Allocated memory was 54.5 MB in the beginning and 239.1 MB in the end (delta: 184.5 MB). Free memory was 30.4 MB in the beginning and 92.9 MB in the end (delta: -62.5 MB). Peak memory consumption was 121.6 MB. Max. memory is 16.1 GB. [2021-08-27 05:32:01,543 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 54.5 MB. Free memory was 37.0 MB in the beginning and 36.9 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:32:01,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.82 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.2 MB in the beginning and 41.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-08-27 05:32:01,544 INFO L168 Benchmark]: Boogie Preprocessor took 84.60 ms. Allocated memory is still 67.1 MB. Free memory was 41.2 MB in the beginning and 37.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:32:01,544 INFO L168 Benchmark]: RCFGBuilder took 944.04 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 37.1 MB in the beginning and 51.8 MB in the end (delta: -14.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-08-27 05:32:01,544 INFO L168 Benchmark]: TraceAbstraction took 108645.88 ms. Allocated memory was 81.8 MB in the beginning and 239.1 MB in the end (delta: 157.3 MB). Free memory was 51.3 MB in the beginning and 93.9 MB in the end (delta: -42.6 MB). Peak memory consumption was 115.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:32:01,545 INFO L168 Benchmark]: Witness Printer took 5.12 ms. Allocated memory is still 239.1 MB. Free memory was 93.9 MB in the beginning and 92.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:32:01,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 54.5 MB. Free memory was 37.0 MB in the beginning and 36.9 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 472.82 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.2 MB in the beginning and 41.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.60 ms. Allocated memory is still 67.1 MB. Free memory was 41.2 MB in the beginning and 37.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 944.04 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 37.1 MB in the beginning and 51.8 MB in the end (delta: -14.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 108645.88 ms. Allocated memory was 81.8 MB in the beginning and 239.1 MB in the end (delta: 157.3 MB). Free memory was 51.3 MB in the beginning and 93.9 MB in the end (delta: -42.6 MB). Peak memory consumption was 115.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.12 ms. Allocated memory is still 239.1 MB. Free memory was 93.9 MB in the beginning and 92.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * 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) - 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) - 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 694]: 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: [L777] static struct L0 *list; [L779] CALL l0_insert(&list) [L708] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L708] RET, EXPR zalloc_or_die(sizeof *item) [L708] struct L0 *item = zalloc_or_die(sizeof *item); [L710] CALL l1_insert(&item->down) [L699] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L699] RET, EXPR zalloc_or_die(sizeof *item) [L699] struct L1 *item = zalloc_or_die(sizeof *item); [L701] CALL l2_insert(&item->down) [L690] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L690] RET, EXPR zalloc_or_die(sizeof *item) [L690] struct L2 *item = zalloc_or_die(sizeof *item); [L692] CALL l3_insert(&item->down) [L681] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L681] RET, EXPR zalloc_or_die(sizeof *item) [L681] struct L3 *item = zalloc_or_die(sizeof *item); [L683] CALL l4_insert(&item->down) [L674] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L674] RET, EXPR zalloc_or_die(sizeof *item) [L674] struct L4 *item = zalloc_or_die(sizeof *item); [L675] CALL, EXPR zalloc_or_die(119U) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L675] RET, EXPR zalloc_or_die(119U) [L675] item->down = zalloc_or_die(119U) [L676] EXPR \read(**list) [L676] item->next = *list [L677] *list = item [L683] RET l4_insert(&item->down) [L684] COND FALSE !(__VERIFIER_nondet_int()) [L685] EXPR \read(**list) [L685] item->next = *list [L686] *list = item [L692] RET l3_insert(&item->down) [L693] COND FALSE !(__VERIFIER_nondet_int()) [L694] \read(**list) - UnprovableResult [Line: 731]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 731]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free 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 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: 695]: 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: 755]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 756]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 756]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 786]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 786]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 768]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 768]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 675]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 675]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 22 procedures, 289 locations, 87 error locations. Started 1 CEGAR loops. OverallTime: 108572.7ms, OverallIterations: 11, TraceHistogramMax: 6, EmptinessCheckTime: 26.7ms, AutomataDifference: 66139.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2141 SDtfs, 3765 SDslu, 12126 SDs, 0 SdLazy, 18683 SolverSat, 954 SolverUnsat, 73 SolverUnknown, 0 SolverNotchecked, 29642.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1022 GetRequests, 782 SyntacticMatches, 29 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 53375.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=292occurred in iteration=10, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 160.4ms AutomataMinimizationTime, 10 MinimizatonAttempts, 1414 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 307.5ms SsaConstructionTime, 742.1ms SatisfiabilityAnalysisTime, 28590.7ms InterpolantComputationTime, 934 NumberOfCodeBlocks, 934 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 924 ConstructedInterpolants, 223 QuantifiedInterpolants, 5548 SizeOfPredicates, 74 NumberOfNonLiveVariables, 5680 ConjunctsInSsa, 425 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 1435/1680 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 [2021-08-27 05:32:01,659 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-dev-20ed64e [2021-08-27 05:32:03,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:32:03,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:32:03,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:32:03,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:32:03,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:32:03,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:32:03,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:32:03,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:32:03,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:32:03,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:32:03,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:32:03,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:32:03,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:32:03,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:32:03,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:32:03,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:32:03,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:32:03,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:32:03,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:32:03,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:32:03,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:32:03,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:32:03,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:32:03,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:32:03,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:32:03,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:32:03,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:32:03,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:32:03,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:32:03,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:32:03,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:32:03,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:32:03,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:32:03,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:32:03,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:32:03,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:32:03,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:32:03,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:32:03,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:32:03,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:32:03,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 05:32:03,624 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:32:03,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:32:03,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:32:03,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:32:03,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:32:03,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:32:03,626 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:32:03,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:32:03,626 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:32:03,626 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:32:03,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:32:03,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:32:03,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:32:03,627 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:32:03,627 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:32:03,627 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:32:03,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:32:03,628 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:32:03,628 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 05:32:03,628 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 05:32:03,628 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:32:03,628 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:32:03,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:32:03,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:32:03,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:32:03,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:32:03,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:32:03,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:32:03,629 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 05:32:03,629 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 05:32:03,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:32:03,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 05:32:03,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fe4e5e6f5af9744dd6ccaf06e804c2ce4d6dd68 [2021-08-27 05:32:03,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:32:04,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:32:04,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:32:04,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:32:04,016 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:32:04,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0235-2.i [2021-08-27 05:32:04,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8f6a21d4/ab826491a77849bbbb930598bae00a44/FLAG917b91415 [2021-08-27 05:32:04,655 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:32:04,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-2.i [2021-08-27 05:32:04,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8f6a21d4/ab826491a77849bbbb930598bae00a44/FLAG917b91415 [2021-08-27 05:32:04,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8f6a21d4/ab826491a77849bbbb930598bae00a44 [2021-08-27 05:32:04,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:32:04,935 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:32:04,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:32:04,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:32:04,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:32:04,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:32:04" (1/1) ... [2021-08-27 05:32:04,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@111efdb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:32:04, skipping insertion in model container [2021-08-27 05:32:04,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:32:04" (1/1) ... [2021-08-27 05:32:04,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:32:04,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:32:05,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:32:05,369 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:32:05,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:32:05,482 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:32:05,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:32:05 WrapperNode [2021-08-27 05:32:05,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:32:05,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:32:05,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:32:05,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:32:05,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:32:05" (1/1) ... [2021-08-27 05:32:05,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:32:05" (1/1) ... [2021-08-27 05:32:05,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:32:05" (1/1) ... [2021-08-27 05:32:05,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:32:05" (1/1) ... [2021-08-27 05:32:05,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:32:05" (1/1) ... [2021-08-27 05:32:05,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:32:05" (1/1) ... [2021-08-27 05:32:05,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:32:05" (1/1) ... [2021-08-27 05:32:05,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:32:05,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:32:05,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:32:05,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:32:05,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:32:05" (1/1) ... [2021-08-27 05:32:05,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:32:05,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:32:05,646 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) [2021-08-27 05:32:05,664 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 [2021-08-27 05:32:05,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:32:05,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:32:05,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:32:05,705 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:32:05,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:32:05,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:32:05,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:32:05,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:32:05,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:32:05,708 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-08-27 05:32:05,708 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2021-08-27 05:32:05,708 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_insert [2021-08-27 05:32:05,708 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_insert [2021-08-27 05:32:05,708 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-08-27 05:32:05,708 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-08-27 05:32:05,709 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_insert [2021-08-27 05:32:05,709 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_destroy [2021-08-27 05:32:05,709 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_destroy [2021-08-27 05:32:05,709 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-08-27 05:32:05,709 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_destroy [2021-08-27 05:32:05,710 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2021-08-27 05:32:05,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:32:05,710 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 05:32:05,710 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:32:05,710 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:32:05,710 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:32:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:32:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:32:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:32:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:32:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:32:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:32:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:32:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:32:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:32:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:32:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:32:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:32:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:32:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:32:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:32:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:32:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:32:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:32:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:32:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:32:05,715 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:32:05,715 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:32:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:32:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:32:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:32:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:32:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:32:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:32:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:32:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:32:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:32:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:32:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:32:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:32:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:32:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:32:05,719 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:32:05,719 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:32:05,719 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:32:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:32:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:32:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:32:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:32:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:32:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:32:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:32:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:32:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:32:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:32:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:32:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:32:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:32:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:32:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:32:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:32:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:32:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:32:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:32:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:32:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:32:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:32:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:32:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:32:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:32:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:32:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:32:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:32:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:32:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:32:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:32:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:32:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:32:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:32:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:32:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:32:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:32:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:32:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:32:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:32:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:32:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:32:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:32:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:32:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:32:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:32:05,731 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:32:05,731 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:32:05,731 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:32:05,731 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:32:05,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:32:05,731 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:32:05,731 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:32:05,732 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:32:05,732 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:32:05,732 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:32:05,732 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:32:05,733 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:32:05,733 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:32:05,733 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:32:05,734 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:32:05,734 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:32:05,736 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:32:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:32:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:32:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:32:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:32:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:32:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:32:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:32:05,740 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 05:32:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 05:32:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 05:32:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 05:32:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 05:32:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 05:32:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 05:32:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 05:32:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 05:32:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 05:32:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 05:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 05:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 05:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 05:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 05:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 05:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 05:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 05:32:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 05:32:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 05:32:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 05:32:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 05:32:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 05:32:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 05:32:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 05:32:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 05:32:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 05:32:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 05:32:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 05:32:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 05:32:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 05:32:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 05:32:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 05:32:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 05:32:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 05:32:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 05:32:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 05:32:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 05:32:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-08-27 05:32:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-08-27 05:32:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 05:32:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 05:32:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-08-27 05:32:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-08-27 05:32:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-08-27 05:32:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 05:32:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 05:32:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 05:32:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 05:32:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 05:32:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 05:32:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-08-27 05:32:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:32:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 05:32:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 05:32:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2021-08-27 05:32:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure l4_insert [2021-08-27 05:32:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:32:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:32:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure l3_insert [2021-08-27 05:32:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-08-27 05:32:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-08-27 05:32:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure l0_insert [2021-08-27 05:32:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure l4_destroy [2021-08-27 05:32:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:32:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure l3_destroy [2021-08-27 05:32:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-08-27 05:32:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure l1_destroy [2021-08-27 05:32:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2021-08-27 05:32:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:32:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:32:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 05:32:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 05:32:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:32:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:32:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 05:32:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 05:32:06,455 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 05:32:06,915 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:32:06,916 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-27 05:32:06,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:32:06 BoogieIcfgContainer [2021-08-27 05:32:06,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:32:06,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:32:06,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:32:06,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:32:06,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:32:04" (1/3) ... [2021-08-27 05:32:06,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f0aa9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:32:06, skipping insertion in model container [2021-08-27 05:32:06,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:32:05" (2/3) ... [2021-08-27 05:32:06,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f0aa9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:32:06, skipping insertion in model container [2021-08-27 05:32:06,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:32:06" (3/3) ... [2021-08-27 05:32:06,926 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0235-2.i [2021-08-27 05:32:06,931 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:32:06,931 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2021-08-27 05:32:06,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:32:06,984 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 [2021-08-27 05:32:06,984 INFO L340 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2021-08-27 05:32:07,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 266 states, 144 states have (on average 1.7847222222222223) internal successors, (257), 226 states have internal predecessors, (257), 25 states have call successors, (25), 15 states have call predecessors, (25), 15 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-08-27 05:32:07,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:32:07,022 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:32:07,022 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:32:07,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:32:07,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:32:07,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1508438534, now seen corresponding path program 1 times [2021-08-27 05:32:07,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:32:07,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447014844] [2021-08-27 05:32:07,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:32:07,040 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:32:07,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:32:07,046 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) [2021-08-27 05:32:07,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 05:32:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:32:07,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-27 05:32:07,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:32:07,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:32:07,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:32:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:32:07,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:32:07,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447014844] [2021-08-27 05:32:07,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447014844] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:32:07,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:32:07,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 05:32:07,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919341257] [2021-08-27 05:32:07,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-27 05:32:07,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:32:07,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-27 05:32:07,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 05:32:07,428 INFO L87 Difference]: Start difference. First operand has 266 states, 144 states have (on average 1.7847222222222223) internal successors, (257), 226 states have internal predecessors, (257), 25 states have call successors, (25), 15 states have call predecessors, (25), 15 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) 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) [2021-08-27 05:32:07,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:32:07,477 INFO L93 Difference]: Finished difference Result 266 states and 296 transitions. [2021-08-27 05:32:07,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 05:32:07,478 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 [2021-08-27 05:32:07,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:32:07,494 INFO L225 Difference]: With dead ends: 266 [2021-08-27 05:32:07,494 INFO L226 Difference]: Without dead ends: 263 [2021-08-27 05:32:07,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 05:32:07,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-08-27 05:32:07,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2021-08-27 05:32:07,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 138 states have (on average 1.7681159420289856) internal successors, (244), 224 states have internal predecessors, (244), 25 states have call successors, (25), 15 states have call predecessors, (25), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-08-27 05:32:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 293 transitions. [2021-08-27 05:32:07,544 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 293 transitions. Word has length 7 [2021-08-27 05:32:07,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:32:07,545 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 293 transitions. [2021-08-27 05:32:07,545 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) [2021-08-27 05:32:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 293 transitions. [2021-08-27 05:32:07,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 05:32:07,545 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:32:07,545 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:32:07,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-27 05:32:07,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:32:07,755 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:32:07,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:32:07,756 INFO L82 PathProgramCache]: Analyzing trace with hash -302384499, now seen corresponding path program 1 times [2021-08-27 05:32:07,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:32:07,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091520991] [2021-08-27 05:32:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:32:07,757 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:32:07,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:32:07,759 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) [2021-08-27 05:32:07,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 05:32:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:32:07,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:32:07,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:32:08,072 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 [2021-08-27 05:32:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:32:08,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:32:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:32:08,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:32:08,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091520991] [2021-08-27 05:32:08,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091520991] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:32:08,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:32:08,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 05:32:08,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343141414] [2021-08-27 05:32:08,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:32:08,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:32:08,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:32:08,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:32:08,159 INFO L87 Difference]: Start difference. First operand 263 states and 293 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:32:08,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:32:08,466 INFO L93 Difference]: Finished difference Result 262 states and 292 transitions. [2021-08-27 05:32:08,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:32:08,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 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 12 [2021-08-27 05:32:08,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:32:08,468 INFO L225 Difference]: With dead ends: 262 [2021-08-27 05:32:08,469 INFO L226 Difference]: Without dead ends: 262 [2021-08-27 05:32:08,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:32:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-08-27 05:32:08,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-08-27 05:32:08,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 138 states have (on average 1.7608695652173914) internal successors, (243), 223 states have internal predecessors, (243), 25 states have call successors, (25), 15 states have call predecessors, (25), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-08-27 05:32:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 292 transitions. [2021-08-27 05:32:08,481 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 292 transitions. Word has length 12 [2021-08-27 05:32:08,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:32:08,481 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 292 transitions. [2021-08-27 05:32:08,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:32:08,482 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 292 transitions. [2021-08-27 05:32:08,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 05:32:08,482 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:32:08,482 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:32:08,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 05:32:08,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:32:08,701 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:32:08,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:32:08,702 INFO L82 PathProgramCache]: Analyzing trace with hash -302384498, now seen corresponding path program 1 times [2021-08-27 05:32:08,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:32:08,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477938419] [2021-08-27 05:32:08,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:32:08,702 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:32:08,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:32:08,706 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) [2021-08-27 05:32:08,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 05:32:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:32:08,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 05:32:08,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:32:09,061 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 [2021-08-27 05:32:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:32:09,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:32:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:32:09,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:32:09,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477938419] [2021-08-27 05:32:09,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477938419] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:32:09,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:32:09,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 2] imperfect sequences [] total 6 [2021-08-27 05:32:09,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983363598] [2021-08-27 05:32:09,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:32:09,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:32:09,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:32:09,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:32:09,491 INFO L87 Difference]: Start difference. First operand 262 states and 292 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:32:11,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:32:11,809 INFO L93 Difference]: Finished difference Result 272 states and 302 transitions. [2021-08-27 05:32:11,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:32:11,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-27 05:32:11,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:32:11,813 INFO L225 Difference]: With dead ends: 272 [2021-08-27 05:32:11,813 INFO L226 Difference]: Without dead ends: 272 [2021-08-27 05:32:11,813 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 379.2ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:32:11,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-08-27 05:32:11,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-08-27 05:32:11,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 144 states have (on average 1.7291666666666667) internal successors, (249), 229 states have internal predecessors, (249), 27 states have call successors, (27), 17 states have call predecessors, (27), 16 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-08-27 05:32:11,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 302 transitions. [2021-08-27 05:32:11,825 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 302 transitions. Word has length 12 [2021-08-27 05:32:11,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:32:11,825 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 302 transitions. [2021-08-27 05:32:11,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:32:11,826 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 302 transitions. [2021-08-27 05:32:11,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-08-27 05:32:11,829 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:32:11,829 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:32:11,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-27 05:32:12,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:32:12,039 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:32:12,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:32:12,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1493022328, now seen corresponding path program 1 times [2021-08-27 05:32:12,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:32:12,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119856238] [2021-08-27 05:32:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:32:12,040 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:32:12,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:32:12,044 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) [2021-08-27 05:32:12,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 05:32:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:32:12,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 05:32:12,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:32:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-08-27 05:32:13,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:32:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-08-27 05:32:15,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:32:15,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119856238] [2021-08-27 05:32:15,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119856238] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-27 05:32:15,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:32:15,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-08-27 05:32:15,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801967200] [2021-08-27 05:32:15,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 05:32:15,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:32:15,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 05:32:15,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-27 05:32:15,091 INFO L87 Difference]: Start difference. First operand 272 states and 302 transitions. Second operand has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-08-27 05:32:15,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:32:15,614 INFO L93 Difference]: Finished difference Result 289 states and 319 transitions. [2021-08-27 05:32:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:32:15,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 123 [2021-08-27 05:32:15,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:32:15,616 INFO L225 Difference]: With dead ends: 289 [2021-08-27 05:32:15,616 INFO L226 Difference]: Without dead ends: 273 [2021-08-27 05:32:15,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 841.3ms TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-08-27 05:32:15,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-08-27 05:32:15,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2021-08-27 05:32:15,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 145 states have (on average 1.7241379310344827) internal successors, (250), 230 states have internal predecessors, (250), 27 states have call successors, (27), 17 states have call predecessors, (27), 16 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-08-27 05:32:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 303 transitions. [2021-08-27 05:32:15,625 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 303 transitions. Word has length 123 [2021-08-27 05:32:15,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:32:15,626 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 303 transitions. [2021-08-27 05:32:15,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-08-27 05:32:15,626 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 303 transitions. [2021-08-27 05:32:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-08-27 05:32:15,632 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:32:15,632 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:32:15,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-27 05:32:15,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:32:15,845 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:32:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:32:15,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1328224582, now seen corresponding path program 1 times [2021-08-27 05:32:15,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:32:15,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697238195] [2021-08-27 05:32:15,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:32:15,846 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:32:15,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:32:15,847 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) [2021-08-27 05:32:15,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 05:32:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:32:16,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 05:32:16,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:32:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-08-27 05:32:16,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:32:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-08-27 05:32:18,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:32:18,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697238195] [2021-08-27 05:32:18,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697238195] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:32:18,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:32:18,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-27 05:32:18,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684202134] [2021-08-27 05:32:18,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 05:32:18,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:32:18,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 05:32:18,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-08-27 05:32:18,920 INFO L87 Difference]: Start difference. First operand 273 states and 303 transitions. Second operand has 15 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 15 states have internal predecessors, (58), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-08-27 05:32:19,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:32:19,539 INFO L93 Difference]: Finished difference Result 290 states and 320 transitions. [2021-08-27 05:32:19,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 05:32:19,544 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 15 states have internal predecessors, (58), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 129 [2021-08-27 05:32:19,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:32:19,545 INFO L225 Difference]: With dead ends: 290 [2021-08-27 05:32:19,545 INFO L226 Difference]: Without dead ends: 274 [2021-08-27 05:32:19,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 986.3ms TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-08-27 05:32:19,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-08-27 05:32:19,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-08-27 05:32:19,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 146 states have (on average 1.7191780821917808) internal successors, (251), 231 states have internal predecessors, (251), 27 states have call successors, (27), 17 states have call predecessors, (27), 16 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-08-27 05:32:19,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 304 transitions. [2021-08-27 05:32:19,553 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 304 transitions. Word has length 129 [2021-08-27 05:32:19,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:32:19,554 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 304 transitions. [2021-08-27 05:32:19,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 15 states have internal predecessors, (58), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-08-27 05:32:19,554 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 304 transitions. [2021-08-27 05:32:19,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-08-27 05:32:19,556 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:32:19,556 INFO L512 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:32:19,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-27 05:32:19,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:32:19,786 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:32:19,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:32:19,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1919502392, now seen corresponding path program 2 times [2021-08-27 05:32:19,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:32:19,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479347243] [2021-08-27 05:32:19,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:32:19,787 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:32:19,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:32:19,788 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) [2021-08-27 05:32:19,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-27 05:32:20,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 05:32:20,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:32:20,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 05:32:20,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:32:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 120 proven. 3 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-08-27 05:32:21,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:32:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-08-27 05:32:23,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:32:23,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479347243] [2021-08-27 05:32:23,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479347243] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:32:23,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:32:23,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-08-27 05:32:23,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966601400] [2021-08-27 05:32:23,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-27 05:32:23,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:32:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-27 05:32:23,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-08-27 05:32:23,120 INFO L87 Difference]: Start difference. First operand 274 states and 304 transitions. Second operand has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-08-27 05:32:23,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:32:23,949 INFO L93 Difference]: Finished difference Result 291 states and 321 transitions. [2021-08-27 05:32:23,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 05:32:23,950 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 135 [2021-08-27 05:32:23,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:32:23,952 INFO L225 Difference]: With dead ends: 291 [2021-08-27 05:32:23,952 INFO L226 Difference]: Without dead ends: 275 [2021-08-27 05:32:23,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1156.2ms TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-08-27 05:32:23,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-08-27 05:32:23,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2021-08-27 05:32:23,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 147 states have (on average 1.7142857142857142) internal successors, (252), 232 states have internal predecessors, (252), 27 states have call successors, (27), 17 states have call predecessors, (27), 16 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-08-27 05:32:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 305 transitions. [2021-08-27 05:32:23,959 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 305 transitions. Word has length 135 [2021-08-27 05:32:23,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:32:23,959 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 305 transitions. [2021-08-27 05:32:23,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-08-27 05:32:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 305 transitions. [2021-08-27 05:32:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-08-27 05:32:23,961 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:32:23,961 INFO L512 BasicCegarLoop]: trace histogram [18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:32:23,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-27 05:32:24,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:32:24,183 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 05:32:24,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:32:24,183 INFO L82 PathProgramCache]: Analyzing trace with hash 889334906, now seen corresponding path program 3 times [2021-08-27 05:32:24,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:32:24,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985432556] [2021-08-27 05:32:24,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 05:32:24,184 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:32:24,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:32:24,185 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) [2021-08-27 05:32:24,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-27 05:32:24,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 05:32:24,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:32:24,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-27 05:32:24,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:32:24,989 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 [2021-08-27 05:32:25,240 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 12 treesize of output 9 [2021-08-27 05:32:25,434 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-27 05:32:25,435 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 25 treesize of output 32 [2021-08-27 05:32:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 239 proven. 8 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-08-27 05:32:25,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:32:36,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:32:36,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985432556] [2021-08-27 05:32:36,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:32:36,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1178795008] [2021-08-27 05:32:36,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 05:32:36,422 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 05:32:36,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 05:32:36,426 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-27 05:32:36,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-08-27 05:32:37,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 05:32:37,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:32:37,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-27 05:32:37,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:32:37,516 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 [2021-08-27 05:32:39,671 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 [2021-08-27 05:32:43,970 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 05:32:43,970 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 19 treesize of output 24 [2021-08-27 05:32:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 259 proven. 7 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-08-27 05:32:44,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:32:52,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:32:52,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085561755] [2021-08-27 05:32:52,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 05:32:52,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:32:52,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:32:52,446 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:32:52,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-27 05:32:53,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 05:32:53,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:32:53,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 05:32:53,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:32:53,331 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 [2021-08-27 05:32:53,512 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 12 treesize of output 9 [2021-08-27 05:32:53,717 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-27 05:32:53,717 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 26 treesize of output 33 [2021-08-27 05:32:53,754 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 239 proven. 8 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-08-27 05:32:53,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:33:05,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:33:05,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:33:05,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 05:33:05,264 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-27 05:33:05,264 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 05:33:05,268 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr0REQUIRES_VIOLATION [2021-08-27 05:33:05,269 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:33:05,269 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:33:05,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:33:05,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:33:05,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr0REQUIRES_VIOLATION [2021-08-27 05:33:05,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr1REQUIRES_VIOLATION [2021-08-27 05:33:05,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr2REQUIRES_VIOLATION [2021-08-27 05:33:05,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr3REQUIRES_VIOLATION [2021-08-27 05:33:05,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr4REQUIRES_VIOLATION [2021-08-27 05:33:05,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr5REQUIRES_VIOLATION [2021-08-27 05:33:05,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION [2021-08-27 05:33:05,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION [2021-08-27 05:33:05,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION [2021-08-27 05:33:05,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION [2021-08-27 05:33:05,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION [2021-08-27 05:33:05,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION [2021-08-27 05:33:05,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:33:05,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:33:05,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr5REQUIRES_VIOLATION [2021-08-27 05:33:05,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr6REQUIRES_VIOLATION [2021-08-27 05:33:05,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr9ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION [2021-08-27 05:33:05,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION [2021-08-27 05:33:05,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION [2021-08-27 05:33:05,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION [2021-08-27 05:33:05,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION [2021-08-27 05:33:05,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION [2021-08-27 05:33:05,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION [2021-08-27 05:33:05,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION [2021-08-27 05:33:05,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:33:05,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:33:05,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:33:05,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:33:05,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:33:05,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:33:05,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:33:05,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:33:05,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 05:33:05,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 05:33:05,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 05:33:05,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 05:33:05,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 05:33:05,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 05:33:05,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 05:33:05,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 05:33:05,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-08-27 05:33:05,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 05:33:05,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:33:05,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:33:05,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:33:05,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:33:05,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:33:05,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:33:05,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:33:05,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:33:05,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:33:05,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:33:05,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr0REQUIRES_VIOLATION [2021-08-27 05:33:05,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr1REQUIRES_VIOLATION [2021-08-27 05:33:05,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr2REQUIRES_VIOLATION [2021-08-27 05:33:05,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr3REQUIRES_VIOLATION [2021-08-27 05:33:05,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr4REQUIRES_VIOLATION [2021-08-27 05:33:05,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr5REQUIRES_VIOLATION [2021-08-27 05:33:05,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr1REQUIRES_VIOLATION [2021-08-27 05:33:05,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr2REQUIRES_VIOLATION [2021-08-27 05:33:05,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr3REQUIRES_VIOLATION [2021-08-27 05:33:05,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr4REQUIRES_VIOLATION [2021-08-27 05:33:05,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr5REQUIRES_VIOLATION [2021-08-27 05:33:05,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr6REQUIRES_VIOLATION [2021-08-27 05:33:05,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr7REQUIRES_VIOLATION [2021-08-27 05:33:05,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-08-27 05:33:05,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-27 05:33:05,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-27 05:33:05,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:33:05,894 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:33:05,900 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:33:05,900 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:33:05,901 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:33:05,901 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:33:05,901 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:33:05,901 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:33:05,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:33:05 BoogieIcfgContainer [2021-08-27 05:33:05,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:33:05,918 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:33:05,918 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:33:05,918 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:33:05,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:32:06" (3/4) ... [2021-08-27 05:33:05,921 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:33:05,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:33:05,922 INFO L168 Benchmark]: Toolchain (without parser) took 60987.32 ms. Allocated memory was 60.8 MB in the beginning and 136.3 MB in the end (delta: 75.5 MB). Free memory was 38.5 MB in the beginning and 71.1 MB in the end (delta: -32.6 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. [2021-08-27 05:33:05,925 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 43.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:33:05,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 549.23 ms. Allocated memory is still 60.8 MB. Free memory was 38.3 MB in the beginning and 32.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 05:33:05,926 INFO L168 Benchmark]: Boogie Preprocessor took 115.50 ms. Allocated memory is still 60.8 MB. Free memory was 32.7 MB in the beginning and 28.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:33:05,926 INFO L168 Benchmark]: RCFGBuilder took 1316.91 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 28.0 MB in the beginning and 53.2 MB in the end (delta: -25.2 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:33:05,927 INFO L168 Benchmark]: TraceAbstraction took 58996.77 ms. Allocated memory was 77.6 MB in the beginning and 136.3 MB in the end (delta: 58.7 MB). Free memory was 52.8 MB in the beginning and 71.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 85.4 MB. Max. memory is 16.1 GB. [2021-08-27 05:33:05,927 INFO L168 Benchmark]: Witness Printer took 3.39 ms. Allocated memory is still 136.3 MB. Free memory is still 71.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:33:05,928 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 43.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 549.23 ms. Allocated memory is still 60.8 MB. Free memory was 38.3 MB in the beginning and 32.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 115.50 ms. Allocated memory is still 60.8 MB. Free memory was 32.7 MB in the beginning and 28.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1316.91 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 28.0 MB in the beginning and 53.2 MB in the end (delta: -25.2 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 58996.77 ms. Allocated memory was 77.6 MB in the beginning and 136.3 MB in the end (delta: 58.7 MB). Free memory was 52.8 MB in the beginning and 71.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 85.4 MB. Max. memory is 16.1 GB. * Witness Printer took 3.39 ms. Allocated memory is still 136.3 MB. Free memory is still 71.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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) - 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) - 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 675]: 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: [L777] static struct L0 *list; [L779] CALL l0_insert(&list) [L708] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L708] RET, EXPR zalloc_or_die(sizeof *item) [L708] struct L0 *item = zalloc_or_die(sizeof *item); [L710] CALL l1_insert(&item->down) [L699] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L699] RET, EXPR zalloc_or_die(sizeof *item) [L699] struct L1 *item = zalloc_or_die(sizeof *item); [L701] CALL l2_insert(&item->down) [L690] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L690] RET, EXPR zalloc_or_die(sizeof *item) [L690] struct L2 *item = zalloc_or_die(sizeof *item); [L692] CALL l3_insert(&item->down) [L681] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L681] RET, EXPR zalloc_or_die(sizeof *item) [L681] struct L3 *item = zalloc_or_die(sizeof *item); [L683] CALL l4_insert(&item->down) [L674] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L674] RET, EXPR zalloc_or_die(sizeof *item) [L674] struct L4 *item = zalloc_or_die(sizeof *item); [L675] CALL, EXPR zalloc_or_die(119U) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L675] RET, EXPR zalloc_or_die(119U) [L675] item->down = zalloc_or_die(119U) - UnprovableResult [Line: 731]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 731]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free 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 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: 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: 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: 755]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 756]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 756]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 786]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 786]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 768]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 768]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 675]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 290 locations, 87 error locations. Started 1 CEGAR loops. OverallTime: 58916.6ms, OverallIterations: 7, TraceHistogramMax: 18, EmptinessCheckTime: 31.4ms, AutomataDifference: 4704.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1715 SDtfs, 78 SDslu, 7321 SDs, 0 SdLazy, 628 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3080.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 844 GetRequests, 783 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3377.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=275occurred in iteration=6, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 83.7ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 223.7ms SsaConstructionTime, 610.5ms SatisfiabilityAnalysisTime, 8831.1ms InterpolantComputationTime, 418 NumberOfCodeBlocks, 418 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 824 ConstructedInterpolants, 0 QuantifiedInterpolants, 1251 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1959 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 1575/1818 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 [2021-08-27 05:33:06,004 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...