./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0234-1.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-0234-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 51c1bea912340cc75c6e6fc0f53ca083b7e48aae .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-0234-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 51c1bea912340cc75c6e6fc0f53ca083b7e48aae ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 05:28:23,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:28:23,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:28:23,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:28:23,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:28:23,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:28:23,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:28:23,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:28:23,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:28:23,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:28:23,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:28:23,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:28:23,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:28:23,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:28:23,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:28:23,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:28:23,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:28:23,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:28:23,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:28:23,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:28:23,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:28:23,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:28:23,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:28:23,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:28:23,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:28:23,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:28:23,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:28:23,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:28:23,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:28:23,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:28:23,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:28:23,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:28:23,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:28:23,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:28:23,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:28:23,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:28:23,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:28:23,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:28:23,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:28:23,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:28:23,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:28:23,202 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 05:28:23,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:28:23,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:28:23,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:28:23,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:28:23,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:28:23,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:28:23,230 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:28:23,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:28:23,230 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:28:23,230 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:28:23,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:28:23,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:28:23,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:28:23,231 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:28:23,231 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:28:23,232 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:28:23,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:28:23,232 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:28:23,232 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:28:23,232 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:28:23,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:28:23,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:28:23,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:28:23,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:28:23,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:28:23,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:28:23,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 05:28:23,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 05:28:23,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:28:23,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51c1bea912340cc75c6e6fc0f53ca083b7e48aae [2021-08-27 05:28:23,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:28:23,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:28:23,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:28:23,521 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:28:23,521 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:28:23,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0234-1.i [2021-08-27 05:28:23,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2910206f2/24db25806954465ba736fec2977a97ce/FLAGd4b6f99dc [2021-08-27 05:28:24,000 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:28:24,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-1.i [2021-08-27 05:28:24,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2910206f2/24db25806954465ba736fec2977a97ce/FLAGd4b6f99dc [2021-08-27 05:28:24,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2910206f2/24db25806954465ba736fec2977a97ce [2021-08-27 05:28:24,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:28:24,034 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:28:24,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:28:24,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:28:24,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:28:24,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:28:24" (1/1) ... [2021-08-27 05:28:24,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0068d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:24, skipping insertion in model container [2021-08-27 05:28:24,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:28:24" (1/1) ... [2021-08-27 05:28:24,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:28:24,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:28:24,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:28:24,378 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:28:24,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:28:24,449 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:28:24,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:24 WrapperNode [2021-08-27 05:28:24,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:28:24,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:28:24,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:28:24,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:28:24,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:24" (1/1) ... [2021-08-27 05:28:24,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:24" (1/1) ... [2021-08-27 05:28:24,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:24" (1/1) ... [2021-08-27 05:28:24,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:24" (1/1) ... [2021-08-27 05:28:24,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:24" (1/1) ... [2021-08-27 05:28:24,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:24" (1/1) ... [2021-08-27 05:28:24,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:24" (1/1) ... [2021-08-27 05:28:24,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:28:24,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:28:24,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:28:24,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:28:24,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:24" (1/1) ... [2021-08-27 05:28:24,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:28:24,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:28:24,561 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 05:28:24,568 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 05:28:24,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:28:24,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:28:24,595 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:28:24,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:28:24,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:28:24,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:28:24,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:28:24,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:28:24,596 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-08-27 05:28:24,596 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2021-08-27 05:28:24,596 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_insert [2021-08-27 05:28:24,597 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_insert [2021-08-27 05:28:24,597 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-08-27 05:28:24,597 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-08-27 05:28:24,597 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_insert [2021-08-27 05:28:24,597 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_destroy [2021-08-27 05:28:24,597 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_destroy [2021-08-27 05:28:24,597 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-08-27 05:28:24,597 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_destroy [2021-08-27 05:28:24,597 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2021-08-27 05:28:24,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:28:24,598 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 05:28:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:28:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:28:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:28:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:28:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:28:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:28:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:28:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:28:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:28:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:28:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:28:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:28:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:28:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:28:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:28:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:28:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:28:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:28:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:28:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:28:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:28:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:28:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:28:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:28:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:28:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:28:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:28:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:28:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:28:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:28:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:28:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:28:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:28:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:28:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:28:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:28:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:28:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:28:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:28:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:28:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:28:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:28:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:28:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:28:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:28:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:28:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:28:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:28:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:28:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:28:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:28:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:28:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:28:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:28:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:28:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:28:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:28:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:28:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:28:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:28:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:28:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:28:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:28:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:28:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:28:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:28:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 05:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 05:28:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 05:28:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 05:28:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 05:28:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 05:28:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 05:28:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 05:28:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 05:28:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 05:28:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 05:28:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 05:28:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 05:28:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 05:28:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 05:28:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 05:28:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 05:28:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 05:28:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 05:28:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 05:28:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 05:28:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 05:28:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 05:28:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 05:28:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 05:28:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 05:28:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 05:28:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 05:28:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 05:28:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 05:28:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 05:28:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 05:28:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 05:28:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 05:28:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 05:28:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 05:28:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 05:28:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 05:28:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-08-27 05:28:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-08-27 05:28:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 05:28:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 05:28:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-08-27 05:28:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-08-27 05:28:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-08-27 05:28:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 05:28:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 05:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 05:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 05:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 05:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 05:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-08-27 05:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 05:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 05:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2021-08-27 05:28:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure l4_insert [2021-08-27 05:28:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:28:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:28:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure l3_insert [2021-08-27 05:28:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-08-27 05:28:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-08-27 05:28:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure l0_insert [2021-08-27 05:28:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure l4_destroy [2021-08-27 05:28:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:28:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure l3_destroy [2021-08-27 05:28:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-08-27 05:28:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure l1_destroy [2021-08-27 05:28:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2021-08-27 05:28:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:28:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:28:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 05:28:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 05:28:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:28:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 05:28:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 05:28:25,104 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 05:28:25,276 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:28:25,276 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-27 05:28:25,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:28:25 BoogieIcfgContainer [2021-08-27 05:28:25,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:28:25,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:28:25,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:28:25,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:28:25,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:28:24" (1/3) ... [2021-08-27 05:28:25,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dad88cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:28:25, skipping insertion in model container [2021-08-27 05:28:25,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:28:24" (2/3) ... [2021-08-27 05:28:25,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dad88cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:28:25, skipping insertion in model container [2021-08-27 05:28:25,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:28:25" (3/3) ... [2021-08-27 05:28:25,286 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0234-1.i [2021-08-27 05:28:25,299 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:28:25,299 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2021-08-27 05:28:25,340 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:28:25,344 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 05:28:25,344 INFO L340 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2021-08-27 05:28:25,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 122 states have (on average 1.7459016393442623) internal successors, (213), 192 states have internal predecessors, (213), 20 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-08-27 05:28:25,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:28:25,361 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:28:25,362 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:28:25,362 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:28:25,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:28:25,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1439172705, now seen corresponding path program 1 times [2021-08-27 05:28:25,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:28:25,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005120319] [2021-08-27 05:28:25,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:28:25,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:28:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:28:25,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:28:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:28:25,521 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 05:28:25,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:28:25,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005120319] [2021-08-27 05:28:25,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005120319] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:28:25,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:28:25,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:28:25,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903908683] [2021-08-27 05:28:25,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:28:25,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:28:25,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:28:25,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:28:25,537 INFO L87 Difference]: Start difference. First operand has 227 states, 122 states have (on average 1.7459016393442623) internal successors, (213), 192 states have internal predecessors, (213), 20 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) 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 05:28:25,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:28:25,821 INFO L93 Difference]: Finished difference Result 253 states and 273 transitions. [2021-08-27 05:28:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:28:25,822 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 05:28:25,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:28:25,830 INFO L225 Difference]: With dead ends: 253 [2021-08-27 05:28:25,830 INFO L226 Difference]: Without dead ends: 250 [2021-08-27 05:28:25,831 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:28:25,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-08-27 05:28:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 224. [2021-08-27 05:28:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 116 states have (on average 1.7241379310344827) internal successors, (200), 190 states have internal predecessors, (200), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-08-27 05:28:25,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 239 transitions. [2021-08-27 05:28:25,885 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 239 transitions. Word has length 7 [2021-08-27 05:28:25,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:28:25,885 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 239 transitions. [2021-08-27 05:28:25,886 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 05:28:25,886 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 239 transitions. [2021-08-27 05:28:25,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 05:28:25,887 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:28:25,887 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:28:25,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 05:28:25,887 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:28:25,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:28:25,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1247502059, now seen corresponding path program 1 times [2021-08-27 05:28:25,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:28:25,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075963066] [2021-08-27 05:28:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:28:25,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:28:25,922 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:28:25,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661796161] [2021-08-27 05:28:25,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:28:25,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:28:25,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:28:25,924 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 05:28:25,963 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 05:28:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:28:26,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:28:26,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:28:26,162 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 05:28:26,167 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 05:28:26,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:28:26,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075963066] [2021-08-27 05:28:26,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:28:26,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661796161] [2021-08-27 05:28:26,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661796161] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:28:26,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:28:26,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 05:28:26,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503434382] [2021-08-27 05:28:26,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:28:26,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:28:26,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:28:26,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:28:26,177 INFO L87 Difference]: Start difference. First operand 224 states and 239 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 05:28:26,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:28:26,274 INFO L93 Difference]: Finished difference Result 223 states and 238 transitions. [2021-08-27 05:28:26,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:28:26,274 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 05:28:26,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:28:26,277 INFO L225 Difference]: With dead ends: 223 [2021-08-27 05:28:26,277 INFO L226 Difference]: Without dead ends: 223 [2021-08-27 05:28:26,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:28:26,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-08-27 05:28:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-08-27 05:28:26,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 116 states have (on average 1.7155172413793103) internal successors, (199), 189 states have internal predecessors, (199), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-08-27 05:28:26,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 238 transitions. [2021-08-27 05:28:26,306 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 238 transitions. Word has length 12 [2021-08-27 05:28:26,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:28:26,306 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 238 transitions. [2021-08-27 05:28:26,306 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 05:28:26,306 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 238 transitions. [2021-08-27 05:28:26,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 05:28:26,307 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:28:26,307 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:28:26,325 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 05:28:26,520 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 05:28:26,521 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:28:26,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:28:26,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1247502060, now seen corresponding path program 1 times [2021-08-27 05:28:26,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:28:26,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679132921] [2021-08-27 05:28:26,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:28:26,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:28:26,537 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:28:26,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006819555] [2021-08-27 05:28:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:28:26,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:28:26,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:28:26,540 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 05:28:26,542 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 05:28:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:28:26,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 05:28:26,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:28:26,788 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 05:28:26,813 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 05:28:26,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:28:26,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679132921] [2021-08-27 05:28:26,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:28:26,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006819555] [2021-08-27 05:28:26,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006819555] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:28:26,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:28:26,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:28:26,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026357960] [2021-08-27 05:28:26,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:28:26,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:28:26,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:28:26,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:28:26,819 INFO L87 Difference]: Start difference. First operand 223 states and 238 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 05:28:26,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:28:26,949 INFO L93 Difference]: Finished difference Result 222 states and 237 transitions. [2021-08-27 05:28:26,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 05:28:26,950 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 05:28:26,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:28:26,950 INFO L225 Difference]: With dead ends: 222 [2021-08-27 05:28:26,950 INFO L226 Difference]: Without dead ends: 222 [2021-08-27 05:28:26,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:28:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-08-27 05:28:26,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-08-27 05:28:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 115 states have (on average 1.7217391304347827) internal successors, (198), 188 states have internal predecessors, (198), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-08-27 05:28:26,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 237 transitions. [2021-08-27 05:28:26,954 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 237 transitions. Word has length 12 [2021-08-27 05:28:26,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:28:26,955 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 237 transitions. [2021-08-27 05:28:26,955 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 05:28:26,955 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 237 transitions. [2021-08-27 05:28:26,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-08-27 05:28:26,957 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:28:26,957 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 05:28:26,984 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 05:28:27,178 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 05:28:27,179 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:28:27,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:28:27,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1165065815, now seen corresponding path program 1 times [2021-08-27 05:28:27,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:28:27,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103943746] [2021-08-27 05:28:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:28:27,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:28:27,197 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:28:27,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618303532] [2021-08-27 05:28:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:28:27,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:28:27,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:28:27,202 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 05:28:27,203 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 05:28:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:28:27,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-27 05:28:27,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:28:27,815 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 05:28:27,919 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 05:28:27,920 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 05:28:27,933 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 05:28:27,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:28:27,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103943746] [2021-08-27 05:28:27,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:28:27,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618303532] [2021-08-27 05:28:27,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618303532] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:28:27,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:28:27,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-08-27 05:28:27,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922473621] [2021-08-27 05:28:27,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 05:28:27,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:28:27,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 05:28:27,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-08-27 05:28:27,936 INFO L87 Difference]: Start difference. First operand 222 states and 237 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 05:28:28,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:28:28,813 INFO L93 Difference]: Finished difference Result 250 states and 274 transitions. [2021-08-27 05:28:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 05:28:28,814 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 05:28:28,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:28:28,815 INFO L225 Difference]: With dead ends: 250 [2021-08-27 05:28:28,815 INFO L226 Difference]: Without dead ends: 250 [2021-08-27 05:28:28,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 162.6ms TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-08-27 05:28:28,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-08-27 05:28:28,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 220. [2021-08-27 05:28:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 115 states have (on average 1.7043478260869565) internal successors, (196), 186 states have internal predecessors, (196), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-08-27 05:28:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 235 transitions. [2021-08-27 05:28:28,821 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 235 transitions. Word has length 123 [2021-08-27 05:28:28,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:28:28,821 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 235 transitions. [2021-08-27 05:28:28,821 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 05:28:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 235 transitions. [2021-08-27 05:28:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-08-27 05:28:28,822 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:28:28,822 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 05:28:28,843 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 05:28:29,036 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 05:28:29,037 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l4_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:28:29,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:28:29,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1165065816, now seen corresponding path program 1 times [2021-08-27 05:28:29,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:28:29,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445045846] [2021-08-27 05:28:29,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:28:29,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:28:29,056 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:28:29,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021209417] [2021-08-27 05:28:29,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:28:29,057 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:28:29,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:28:29,057 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 05:28:29,058 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 05:28:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:28:29,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 55 conjunts are in the unsatisfiable core [2021-08-27 05:28:29,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:28:29,566 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 05:28:30,092 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 05:28:30,097 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 05:28:30,306 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-08-27 05:28:30,307 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 05:28:30,319 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:28:30,320 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 05:28:30,568 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 05:28:30,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:28:30,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445045846] [2021-08-27 05:28:30,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:28:30,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021209417] [2021-08-27 05:28:30,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021209417] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:28:30,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:28:30,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-08-27 05:28:30,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611119578] [2021-08-27 05:28:30,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 05:28:30,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:28:30,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 05:28:30,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-08-27 05:28:30,571 INFO L87 Difference]: Start difference. First operand 220 states and 235 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 05:28:32,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:28:32,854 INFO L93 Difference]: Finished difference Result 248 states and 272 transitions. [2021-08-27 05:28:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 05:28:32,855 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 05:28:32,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:28:32,857 INFO L225 Difference]: With dead ends: 248 [2021-08-27 05:28:32,857 INFO L226 Difference]: Without dead ends: 248 [2021-08-27 05:28:32,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 915.6ms TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2021-08-27 05:28:32,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-08-27 05:28:32,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 218. [2021-08-27 05:28:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 115 states have (on average 1.6869565217391305) internal successors, (194), 184 states have internal predecessors, (194), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-08-27 05:28:32,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 233 transitions. [2021-08-27 05:28:32,862 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 233 transitions. Word has length 123 [2021-08-27 05:28:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:28:32,863 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 233 transitions. [2021-08-27 05:28:32,863 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 05:28:32,863 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 233 transitions. [2021-08-27 05:28:32,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-08-27 05:28:32,864 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:28:32,864 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 05:28:32,883 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 05:28:33,068 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 05:28:33,069 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting l4_insertErr2REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:28:33,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:28:33,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1358206440, now seen corresponding path program 1 times [2021-08-27 05:28:33,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:28:33,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663388055] [2021-08-27 05:28:33,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:28:33,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:28:33,093 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:28:33,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779206767] [2021-08-27 05:28:33,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:28:33,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:28:33,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:28:33,117 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 05:28:33,118 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 05:28:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:28:33,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 41 conjunts are in the unsatisfiable core [2021-08-27 05:28:33,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:28:33,737 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 05:28:33,849 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 05:28:33,849 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 05:28:33,887 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 05:28:33,960 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 05:28:33,961 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 05:28:33,981 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 05:28:33,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:28:33,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663388055] [2021-08-27 05:28:33,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:28:33,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779206767] [2021-08-27 05:28:33,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779206767] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:28:33,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:28:33,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-08-27 05:28:33,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963831217] [2021-08-27 05:28:33,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 05:28:33,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:28:33,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 05:28:33,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-08-27 05:28:33,983 INFO L87 Difference]: Start difference. First operand 218 states and 233 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 05:28:34,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:28:34,877 INFO L93 Difference]: Finished difference Result 245 states and 269 transitions. [2021-08-27 05:28:34,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-27 05:28:34,877 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 05:28:34,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:28:34,879 INFO L225 Difference]: With dead ends: 245 [2021-08-27 05:28:34,879 INFO L226 Difference]: Without dead ends: 245 [2021-08-27 05:28:34,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 107 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 259.8ms TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-08-27 05:28:34,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-08-27 05:28:34,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 215. [2021-08-27 05:28:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 115 states have (on average 1.6608695652173913) internal successors, (191), 181 states have internal predecessors, (191), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-08-27 05:28:34,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 230 transitions. [2021-08-27 05:28:34,891 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 230 transitions. Word has length 125 [2021-08-27 05:28:34,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:28:34,893 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 230 transitions. [2021-08-27 05:28:34,893 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 05:28:34,893 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 230 transitions. [2021-08-27 05:28:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-08-27 05:28:34,896 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:28:34,896 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 05:28:34,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-27 05:28:35,112 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 05:28:35,115 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting l4_insertErr3REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:28:35,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:28:35,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1358206439, now seen corresponding path program 1 times [2021-08-27 05:28:35,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:28:35,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137385693] [2021-08-27 05:28:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:28:35,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:28:35,134 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:28:35,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862868282] [2021-08-27 05:28:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:28:35,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:28:35,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:28:35,138 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 05:28:35,153 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 05:28:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:28:35,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 83 conjunts are in the unsatisfiable core [2021-08-27 05:28:35,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:28:35,701 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 05:28:36,298 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 05:28:36,301 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 05:28:36,574 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-08-27 05:28:36,574 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 05:28:36,595 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:28:36,596 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 05:28:36,812 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 05:28:36,814 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 05:28:37,003 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-08-27 05:28:37,004 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 05:28:37,023 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-27 05:28:37,023 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 05:28:43,310 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 05:28:43,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:28:43,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137385693] [2021-08-27 05:28:43,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:28:43,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862868282] [2021-08-27 05:28:43,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862868282] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:28:43,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:28:43,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-08-27 05:28:43,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646840877] [2021-08-27 05:28:43,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 05:28:43,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:28:43,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 05:28:43,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=399, Unknown=2, NotChecked=0, Total=462 [2021-08-27 05:28:43,313 INFO L87 Difference]: Start difference. First operand 215 states and 230 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 05:29:03,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:29:03,443 INFO L93 Difference]: Finished difference Result 242 states and 266 transitions. [2021-08-27 05:29:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-27 05:29:03,444 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 05:29:03,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:29:03,445 INFO L225 Difference]: With dead ends: 242 [2021-08-27 05:29:03,445 INFO L226 Difference]: Without dead ends: 242 [2021-08-27 05:29:03,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 101 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 17264.8ms TimeCoverageRelationStatistics Valid=160, Invalid=1094, Unknown=6, NotChecked=0, Total=1260 [2021-08-27 05:29:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-08-27 05:29:03,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 212. [2021-08-27 05:29:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 115 states have (on average 1.6347826086956523) internal successors, (188), 178 states have internal predecessors, (188), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-08-27 05:29:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 227 transitions. [2021-08-27 05:29:03,450 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 227 transitions. Word has length 125 [2021-08-27 05:29:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:29:03,451 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 227 transitions. [2021-08-27 05:29:03,451 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 05:29:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 227 transitions. [2021-08-27 05:29:03,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-08-27 05:29:03,452 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:29:03,452 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 05:29:03,476 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 05:29:03,671 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 05:29:03,672 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting l3_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:29:03,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:29:03,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1691413546, now seen corresponding path program 1 times [2021-08-27 05:29:03,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:29:03,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669976396] [2021-08-27 05:29:03,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:29:03,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:29:03,697 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:29:03,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436629655] [2021-08-27 05:29:03,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:29:03,697 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:29:03,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:29:03,698 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 05:29:03,708 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 05:29:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:29:04,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 52 conjunts are in the unsatisfiable core [2021-08-27 05:29:04,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:29:04,426 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 05:29:04,559 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:29:04,561 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 05:29:04,631 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 05:29:04,740 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 6 treesize of output 5 [2021-08-27 05:29:04,884 INFO L354 Elim1Store]: treesize reduction 82, result has 16.3 percent of original size [2021-08-27 05:29:04,884 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 05:29:04,942 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 05:29:04,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:29:04,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669976396] [2021-08-27 05:29:04,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:29:04,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436629655] [2021-08-27 05:29:04,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436629655] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:29:04,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:29:04,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-08-27 05:29:04,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768982420] [2021-08-27 05:29:04,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-27 05:29:04,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:29:04,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-27 05:29:04,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-08-27 05:29:04,944 INFO L87 Difference]: Start difference. First operand 212 states and 227 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 05:29:05,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:29:05,986 INFO L93 Difference]: Finished difference Result 239 states and 263 transitions. [2021-08-27 05:29:05,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-27 05:29:05,986 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 05:29:05,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:29:05,988 INFO L225 Difference]: With dead ends: 239 [2021-08-27 05:29:05,988 INFO L226 Difference]: Without dead ends: 239 [2021-08-27 05:29:05,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 111 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 348.2ms TimeCoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2021-08-27 05:29:05,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-08-27 05:29:05,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 209. [2021-08-27 05:29:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 115 states have (on average 1.608695652173913) internal successors, (185), 175 states have internal predecessors, (185), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-08-27 05:29:05,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 224 transitions. [2021-08-27 05:29:05,995 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 224 transitions. Word has length 133 [2021-08-27 05:29:05,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:29:05,996 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 224 transitions. [2021-08-27 05:29:05,996 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 05:29:05,996 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 224 transitions. [2021-08-27 05:29:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-08-27 05:29:05,998 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:29:05,998 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 05:29:06,021 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 05:29:06,208 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 05:29:06,209 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting l3_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:29:06,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:29:06,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1691413545, now seen corresponding path program 1 times [2021-08-27 05:29:06,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:29:06,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814495259] [2021-08-27 05:29:06,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:29:06,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:29:06,221 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:29:06,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258336232] [2021-08-27 05:29:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:29:06,222 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:29:06,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:29:06,224 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 05:29:06,226 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 05:29:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:29:06,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 95 conjunts are in the unsatisfiable core [2021-08-27 05:29:06,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:29:06,901 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 05:29:07,535 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 05:29:07,540 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 05:29:07,835 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-08-27 05:29:07,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2021-08-27 05:29:07,857 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:29:07,858 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 05:29:08,037 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 05:29:08,039 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 05:29:08,386 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 05:29:08,390 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 05:29:08,769 INFO L354 Elim1Store]: treesize reduction 92, result has 16.4 percent of original size [2021-08-27 05:29:08,772 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 05:29:08,815 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-08-27 05:29:08,816 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 05:29:15,416 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 05:29:15,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:29:15,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814495259] [2021-08-27 05:29:15,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:29:15,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258336232] [2021-08-27 05:29:15,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258336232] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:29:15,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:29:15,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-08-27 05:29:15,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228818214] [2021-08-27 05:29:15,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 05:29:15,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:29:15,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 05:29:15,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=401, Unknown=2, NotChecked=0, Total=462 [2021-08-27 05:29:15,419 INFO L87 Difference]: Start difference. First operand 209 states and 224 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 05:29:45,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:29:45,435 INFO L93 Difference]: Finished difference Result 252 states and 280 transitions. [2021-08-27 05:29:45,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-27 05:29:45,436 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 05:29:45,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:29:45,438 INFO L225 Difference]: With dead ends: 252 [2021-08-27 05:29:45,438 INFO L226 Difference]: Without dead ends: 252 [2021-08-27 05:29:45,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 26990.8ms TimeCoverageRelationStatistics Valid=163, Invalid=1234, Unknown=9, NotChecked=0, Total=1406 [2021-08-27 05:29:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-08-27 05:29:45,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 222. [2021-08-27 05:29:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 124 states have (on average 1.5725806451612903) internal successors, (195), 185 states have internal predecessors, (195), 23 states have call successors, (23), 16 states have call predecessors, (23), 15 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) [2021-08-27 05:29:45,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 241 transitions. [2021-08-27 05:29:45,444 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 241 transitions. Word has length 133 [2021-08-27 05:29:45,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:29:45,444 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 241 transitions. [2021-08-27 05:29:45,444 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 05:29:45,445 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 241 transitions. [2021-08-27 05:29:45,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-08-27 05:29:45,446 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:29:45,446 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 05:29:45,466 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 05:29:45,664 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 05:29:45,665 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:29:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:29:45,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1012322800, now seen corresponding path program 1 times [2021-08-27 05:29:45,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:29:45,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605940817] [2021-08-27 05:29:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:29:45,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:29:45,685 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:29:45,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416751623] [2021-08-27 05:29:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:29:45,686 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:29:45,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:29:45,687 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 05:29:45,716 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 05:29:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:29:46,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 61 conjunts are in the unsatisfiable core [2021-08-27 05:29:46,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:29:46,510 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 05:29:46,649 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:29:46,650 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 05:29:46,716 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 05:29:46,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 05:29:46,944 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 6 treesize of output 5 [2021-08-27 05:29:47,218 INFO L354 Elim1Store]: treesize reduction 158, result has 15.5 percent of original size [2021-08-27 05:29:47,219 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 05:29:51,022 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 05:29:51,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:29:51,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605940817] [2021-08-27 05:29:51,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:29:51,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416751623] [2021-08-27 05:29:51,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416751623] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:29:51,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:29:51,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-08-27 05:29:51,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446823388] [2021-08-27 05:29:51,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 05:29:51,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:29:51,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 05:29:51,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-08-27 05:29:51,025 INFO L87 Difference]: Start difference. First operand 222 states and 241 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 05:29:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:29:52,378 INFO L93 Difference]: Finished difference Result 285 states and 323 transitions. [2021-08-27 05:29:52,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-27 05:29:52,378 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 05:29:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:29:52,380 INFO L225 Difference]: With dead ends: 285 [2021-08-27 05:29:52,380 INFO L226 Difference]: Without dead ends: 285 [2021-08-27 05:29:52,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 117 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 4171.2ms TimeCoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2021-08-27 05:29:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-08-27 05:29:52,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 248. [2021-08-27 05:29:52,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 144 states have (on average 1.5625) internal successors, (225), 206 states have internal predecessors, (225), 28 states have call successors, (28), 17 states have call predecessors, (28), 17 states have return successors, (32), 25 states have call predecessors, (32), 27 states have call successors, (32) [2021-08-27 05:29:52,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 285 transitions. [2021-08-27 05:29:52,387 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 285 transitions. Word has length 141 [2021-08-27 05:29:52,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:29:52,387 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 285 transitions. [2021-08-27 05:29:52,387 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 05:29:52,387 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 285 transitions. [2021-08-27 05:29:52,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-08-27 05:29:52,388 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:29:52,388 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 05:29:52,408 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 05:29:52,600 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 05:29:52,600 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:29:52,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:29:52,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1012322801, now seen corresponding path program 1 times [2021-08-27 05:29:52,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:29:52,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286429635] [2021-08-27 05:29:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:29:52,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:29:52,618 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:29:52,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655494886] [2021-08-27 05:29:52,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:29:52,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:29:52,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:29:52,620 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 05:29:52,625 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 05:29:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:29:53,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 135 conjunts are in the unsatisfiable core [2021-08-27 05:29:53,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:29:53,409 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 05:29:54,015 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 05:29:54,017 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 05:29:54,317 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-08-27 05:29:54,317 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 05:29:54,338 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:29:54,338 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 05:29:54,505 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 05:29:54,509 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 05:29:54,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2021-08-27 05:29:54,887 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 05:29:55,413 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 05:29:55,415 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 05:29:56,788 INFO L354 Elim1Store]: treesize reduction 156, result has 19.2 percent of original size [2021-08-27 05:29:56,789 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 5 case distinctions, treesize of input 78 treesize of output 97 [2021-08-27 05:29:56,839 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-08-27 05:29:56,839 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 96 treesize of output 104 [2021-08-27 05:30:15,698 WARN L207 SmtUtils]: Spent 8.95 s on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2021-08-27 05:30:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 91 proven. 104 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-08-27 05:30:15,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:30:15,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286429635] [2021-08-27 05:30:15,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:30:15,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655494886] [2021-08-27 05:30:15,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655494886] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:30:15,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:30:15,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-08-27 05:30:15,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864607994] [2021-08-27 05:30:15,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-08-27 05:30:15,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:30:15,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-08-27 05:30:15,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=901, Unknown=3, NotChecked=0, Total=992 [2021-08-27 05:30:15,947 INFO L87 Difference]: Start difference. First operand 248 states and 285 transitions. Second operand has 32 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 12 states have call successors, (22), 4 states have call predecessors, (22), 11 states have return successors, (20), 13 states have call predecessors, (20), 11 states have call successors, (20) [2021-08-27 05:31:03,513 WARN L207 SmtUtils]: Spent 10.33 s on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-08-27 05:31:13,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:31:13,206 INFO L93 Difference]: Finished difference Result 293 states and 343 transitions. [2021-08-27 05:31:13,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-27 05:31:13,207 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 12 states have call successors, (22), 4 states have call predecessors, (22), 11 states have return successors, (20), 13 states have call predecessors, (20), 11 states have call successors, (20) Word has length 141 [2021-08-27 05:31:13,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:31:13,209 INFO L225 Difference]: With dead ends: 293 [2021-08-27 05:31:13,209 INFO L226 Difference]: Without dead ends: 293 [2021-08-27 05:31:13,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 105 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 49159.1ms TimeCoverageRelationStatistics Valid=219, Invalid=2320, Unknown=11, NotChecked=0, Total=2550 [2021-08-27 05:31:13,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-08-27 05:31:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 261. [2021-08-27 05:31:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 153 states have (on average 1.542483660130719) internal successors, (236), 216 states have internal predecessors, (236), 31 states have call successors, (31), 18 states have call predecessors, (31), 18 states have return successors, (38), 27 states have call predecessors, (38), 30 states have call successors, (38) [2021-08-27 05:31:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 305 transitions. [2021-08-27 05:31:13,216 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 305 transitions. Word has length 141 [2021-08-27 05:31:13,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:31:13,216 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 305 transitions. [2021-08-27 05:31:13,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 12 states have call successors, (22), 4 states have call predecessors, (22), 11 states have return successors, (20), 13 states have call predecessors, (20), 11 states have call successors, (20) [2021-08-27 05:31:13,217 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 305 transitions. [2021-08-27 05:31:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-08-27 05:31:13,218 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:31:13,218 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, 1] [2021-08-27 05:31:13,241 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 05:31:13,429 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 05:31:13,430 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting l2_insertErr3REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:31:13,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:31:13,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1317235859, now seen corresponding path program 1 times [2021-08-27 05:31:13,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:31:13,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143596046] [2021-08-27 05:31:13,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:13,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:31:13,451 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:31:13,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626292936] [2021-08-27 05:31:13,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:13,452 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:31:13,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:31:13,453 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:31:13,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-27 05:31:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:31:14,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-27 05:31:14,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:31:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-08-27 05:31:14,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:31:14,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143596046] [2021-08-27 05:31:14,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:31:14,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626292936] [2021-08-27 05:31:14,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626292936] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:31:14,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:31:14,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-27 05:31:14,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804109154] [2021-08-27 05:31:14,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 05:31:14,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:31:14,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 05:31:14,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-08-27 05:31:14,724 INFO L87 Difference]: Start difference. First operand 261 states and 305 transitions. Second operand has 12 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-08-27 05:31:14,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:31:14,909 INFO L93 Difference]: Finished difference Result 260 states and 302 transitions. [2021-08-27 05:31:14,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 05:31:14,910 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 142 [2021-08-27 05:31:14,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:31:14,911 INFO L225 Difference]: With dead ends: 260 [2021-08-27 05:31:14,911 INFO L226 Difference]: Without dead ends: 260 [2021-08-27 05:31:14,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-08-27 05:31:14,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-08-27 05:31:14,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-08-27 05:31:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 153 states have (on average 1.522875816993464) internal successors, (233), 215 states have internal predecessors, (233), 31 states have call successors, (31), 18 states have call predecessors, (31), 18 states have return successors, (38), 27 states have call predecessors, (38), 30 states have call successors, (38) [2021-08-27 05:31:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 302 transitions. [2021-08-27 05:31:14,925 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 302 transitions. Word has length 142 [2021-08-27 05:31:14,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:31:14,926 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 302 transitions. [2021-08-27 05:31:14,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-08-27 05:31:14,926 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 302 transitions. [2021-08-27 05:31:14,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-08-27 05:31:14,927 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:31:14,927 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:31:14,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-27 05:31:15,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-27 05:31:15,141 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting l3_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:31:15,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:31:15,141 INFO L82 PathProgramCache]: Analyzing trace with hash -321059475, now seen corresponding path program 1 times [2021-08-27 05:31:15,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:31:15,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089577259] [2021-08-27 05:31:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:15,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:31:15,153 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:31:15,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342108179] [2021-08-27 05:31:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:15,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:31:15,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:31:15,155 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:31:15,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-27 05:31:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:31:16,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 170 conjunts are in the unsatisfiable core [2021-08-27 05:31:16,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:31:16,252 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 05:31:16,257 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 05:31:17,014 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 05:31:17,016 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 05:31:17,400 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:31:17,400 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 05:31:17,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-08-27 05:31:17,834 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 05:31:17,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-08-27 05:31:18,171 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 05:31:18,173 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 05:31:18,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:31:18,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089577259] [2021-08-27 05:31:18,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:31:18,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342108179] [2021-08-27 05:31:18,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:31:18,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:31:18,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 05:31:18,735 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-08-27 05:31:18,736 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 05:31:18,739 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr1REQUIRES_VIOLATION [2021-08-27 05:31:18,740 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:31:18,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:31:18,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:31:18,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:31:18,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr0REQUIRES_VIOLATION [2021-08-27 05:31:18,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr2REQUIRES_VIOLATION [2021-08-27 05:31:18,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr3REQUIRES_VIOLATION [2021-08-27 05:31:18,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr4REQUIRES_VIOLATION [2021-08-27 05:31:18,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr5REQUIRES_VIOLATION [2021-08-27 05:31:18,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION [2021-08-27 05:31:18,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION [2021-08-27 05:31:18,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION [2021-08-27 05:31:18,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION [2021-08-27 05:31:18,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION [2021-08-27 05:31:18,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION [2021-08-27 05:31:18,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:31:18,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:31:18,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr5REQUIRES_VIOLATION [2021-08-27 05:31:18,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr6REQUIRES_VIOLATION [2021-08-27 05:31:18,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr9ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION [2021-08-27 05:31:18,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION [2021-08-27 05:31:18,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION [2021-08-27 05:31:18,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION [2021-08-27 05:31:18,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION [2021-08-27 05:31:18,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION [2021-08-27 05:31:18,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION [2021-08-27 05:31:18,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION [2021-08-27 05:31:18,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:31:18,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:31:18,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:31:18,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:31:18,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:31:18,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:31:18,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:31:18,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:31:18,747 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:31:18,747 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:31:18,747 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:31:18,747 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,747 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,747 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,747 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:31:18,747 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:31:18,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:31:18,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:31:18,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:31:18,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr0REQUIRES_VIOLATION [2021-08-27 05:31:18,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr1REQUIRES_VIOLATION [2021-08-27 05:31:18,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr2REQUIRES_VIOLATION [2021-08-27 05:31:18,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr3REQUIRES_VIOLATION [2021-08-27 05:31:18,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr4REQUIRES_VIOLATION [2021-08-27 05:31:18,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr5REQUIRES_VIOLATION [2021-08-27 05:31:18,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr0REQUIRES_VIOLATION [2021-08-27 05:31:18,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr1REQUIRES_VIOLATION [2021-08-27 05:31:18,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr2REQUIRES_VIOLATION [2021-08-27 05:31:18,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr3REQUIRES_VIOLATION [2021-08-27 05:31:18,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr4REQUIRES_VIOLATION [2021-08-27 05:31:18,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr5REQUIRES_VIOLATION [2021-08-27 05:31:18,750 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr6REQUIRES_VIOLATION [2021-08-27 05:31:18,750 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr7REQUIRES_VIOLATION [2021-08-27 05:31:18,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-27 05:31:18,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-27 05:31:18,969 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:31:18,973 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:31:18,974 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:31:18,974 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:31:18,975 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:31:18,975 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:31:18,975 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:31:18,975 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:31:18,975 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:31:18,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:31:18 BoogieIcfgContainer [2021-08-27 05:31:18,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:31:18,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:31:18,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:31:18,989 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:31:18,989 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:28:25" (3/4) ... [2021-08-27 05:31:18,992 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:31:18,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:31:18,992 INFO L168 Benchmark]: Toolchain (without parser) took 174958.22 ms. Allocated memory was 48.2 MB in the beginning and 213.9 MB in the end (delta: 165.7 MB). Free memory was 22.6 MB in the beginning and 91.2 MB in the end (delta: -68.6 MB). Peak memory consumption was 97.0 MB. Max. memory is 16.1 GB. [2021-08-27 05:31:18,993 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 48.2 MB. Free memory was 30.7 MB in the beginning and 30.7 MB in the end (delta: 41.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:31:18,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.62 ms. Allocated memory is still 58.7 MB. Free memory was 43.6 MB in the beginning and 31.4 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 05:31:18,993 INFO L168 Benchmark]: Boogie Preprocessor took 78.16 ms. Allocated memory is still 58.7 MB. Free memory was 31.4 MB in the beginning and 40.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:31:18,993 INFO L168 Benchmark]: RCFGBuilder took 749.70 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 40.3 MB in the beginning and 30.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:31:18,994 INFO L168 Benchmark]: TraceAbstraction took 173706.34 ms. Allocated memory was 71.3 MB in the beginning and 213.9 MB in the end (delta: 142.6 MB). Free memory was 29.8 MB in the beginning and 92.0 MB in the end (delta: -62.3 MB). Peak memory consumption was 81.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:31:18,994 INFO L168 Benchmark]: Witness Printer took 3.42 ms. Allocated memory is still 213.9 MB. Free memory was 92.0 MB in the beginning and 91.2 MB in the end (delta: 864.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:31:18,996 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 48.2 MB. Free memory was 30.7 MB in the beginning and 30.7 MB in the end (delta: 41.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 410.62 ms. Allocated memory is still 58.7 MB. Free memory was 43.6 MB in the beginning and 31.4 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.16 ms. Allocated memory is still 58.7 MB. Free memory was 31.4 MB in the beginning and 40.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 749.70 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 40.3 MB in the beginning and 30.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 173706.34 ms. Allocated memory was 71.3 MB in the beginning and 213.9 MB in the end (delta: 142.6 MB). Free memory was 29.8 MB in the beginning and 92.0 MB in the end (delta: -62.3 MB). Peak memory consumption was 81.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.42 ms. Allocated memory is still 213.9 MB. Free memory was 92.0 MB in the beginning and 91.2 MB in the end (delta: 864.4 kB). 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) - 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: 685]: 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: [L767] static struct L0 *list; [L769] 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 TRUE __VERIFIER_nondet_int() [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] \read(**list) - UnprovableResult [Line: 728]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 730]: 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: 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: 718]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free 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: 720]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 720]: 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: 748]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 748]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 765]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 760]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 760]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 760]: 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, 245 locations, 75 error locations. Started 1 CEGAR loops. OverallTime: 173629.3ms, OverallIterations: 13, TraceHistogramMax: 8, EmptinessCheckTime: 21.7ms, AutomataDifference: 114613.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2203 SDtfs, 1972 SDslu, 13219 SDs, 0 SdLazy, 16587 SolverSat, 845 SolverUnsat, 94 SolverUnknown, 0 SolverNotchecked, 46794.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1326 GetRequests, 1018 SyntacticMatches, 36 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 99419.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=261occurred in iteration=11, InterpolantAutomatonStates: 181, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 140.4ms AutomataMinimizationTime, 12 MinimizatonAttempts, 275 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 364.1ms SsaConstructionTime, 828.2ms SatisfiabilityAnalysisTime, 47478.7ms InterpolantComputationTime, 1217 NumberOfCodeBlocks, 1217 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1205 ConstructedInterpolants, 295 QuantifiedInterpolants, 8009 SizeOfPredicates, 108 NumberOfNonLiveVariables, 7316 ConjunctsInSsa, 596 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 1787/2160 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 05:31:19,124 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 05:31:20,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:31:20,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:31:20,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:31:20,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:31:20,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:31:20,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:31:20,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:31:20,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:31:20,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:31:20,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:31:20,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:31:20,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:31:20,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:31:20,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:31:20,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:31:20,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:31:20,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:31:20,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:31:20,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:31:20,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:31:20,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:31:20,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:31:20,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:31:20,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:31:20,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:31:20,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:31:20,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:31:20,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:31:20,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:31:20,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:31:20,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:31:20,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:31:20,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:31:20,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:31:20,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:31:20,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:31:20,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:31:20,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:31:20,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:31:20,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:31:20,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 05:31:20,708 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:31:20,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:31:20,709 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:31:20,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:31:20,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:31:20,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:31:20,711 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:31:20,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:31:20,712 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:31:20,712 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:31:20,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:31:20,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:31:20,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:31:20,713 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:31:20,713 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:31:20,713 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:31:20,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:31:20,713 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:31:20,713 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 05:31:20,714 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 05:31:20,714 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:31:20,714 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:31:20,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:31:20,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:31:20,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:31:20,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:31:20,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:31:20,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:31:20,715 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 05:31:20,715 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 05:31:20,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:31:20,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 05:31:20,716 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51c1bea912340cc75c6e6fc0f53ca083b7e48aae [2021-08-27 05:31:20,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:31:20,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:31:20,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:31:20,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:31:20,965 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:31:20,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0234-1.i [2021-08-27 05:31:21,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7067bcb1b/28e6ed08b8a4482bb7debe1d92455067/FLAGc511e8eea [2021-08-27 05:31:21,416 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:31:21,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-1.i [2021-08-27 05:31:21,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7067bcb1b/28e6ed08b8a4482bb7debe1d92455067/FLAGc511e8eea [2021-08-27 05:31:21,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7067bcb1b/28e6ed08b8a4482bb7debe1d92455067 [2021-08-27 05:31:21,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:31:21,439 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:31:21,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:31:21,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:31:21,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:31:21,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:31:21" (1/1) ... [2021-08-27 05:31:21,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2170e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:21, skipping insertion in model container [2021-08-27 05:31:21,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:31:21" (1/1) ... [2021-08-27 05:31:21,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:31:21,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:31:21,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:31:21,818 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:31:21,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:31:21,889 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:31:21,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:21 WrapperNode [2021-08-27 05:31:21,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:31:21,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:31:21,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:31:21,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:31:21,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:21" (1/1) ... [2021-08-27 05:31:21,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:21" (1/1) ... [2021-08-27 05:31:21,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:21" (1/1) ... [2021-08-27 05:31:21,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:21" (1/1) ... [2021-08-27 05:31:21,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:21" (1/1) ... [2021-08-27 05:31:21,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:21" (1/1) ... [2021-08-27 05:31:21,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:21" (1/1) ... [2021-08-27 05:31:21,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:31:21,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:31:21,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:31:21,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:31:21,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:21" (1/1) ... [2021-08-27 05:31:21,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:31:21,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:31:21,973 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 05:31:21,992 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 05:31:22,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:31:22,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:31:22,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:31:22,006 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:31:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:31:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:31:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:31:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:31:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:31:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-08-27 05:31:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2021-08-27 05:31:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_insert [2021-08-27 05:31:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_insert [2021-08-27 05:31:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-08-27 05:31:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-08-27 05:31:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_insert [2021-08-27 05:31:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_destroy [2021-08-27 05:31:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_destroy [2021-08-27 05:31:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-08-27 05:31:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_destroy [2021-08-27 05:31:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2021-08-27 05:31:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:31:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 05:31:22,008 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:31:22,008 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:31:22,008 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:31:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:31:22,010 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:31:22,010 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:31:22,010 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:31:22,010 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:31:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:31:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:31:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:31:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:31:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:31:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:31:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:31:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:31:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:31:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:31:22,012 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:31:22,012 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:31:22,012 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:31:22,012 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:31:22,012 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:31:22,012 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:31:22,012 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:31:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:31:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:31:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:31:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:31:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:31:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:31:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:31:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:31:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:31:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:31:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:31:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:31:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:31:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:31:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:31:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:31:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:31:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:31:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:31:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:31:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:31:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:31:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:31:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:31:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:31:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:31:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:31:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:31:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:31:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:31:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:31:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:31:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:31:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:31:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:31:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:31:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:31:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:31:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:31:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:31:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:31:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:31:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:31:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:31:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:31:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:31:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:31:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:31:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:31:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:31:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:31:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:31:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:31:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:31:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:31:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:31:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:31:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 05:31:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 05:31:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 05:31:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 05:31:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 05:31:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 05:31:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 05:31:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 05:31:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 05:31:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 05:31:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 05:31:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:31:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure l4_insert [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure l3_insert [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure l0_insert [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure l4_destroy [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure l3_destroy [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure l1_destroy [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:31:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 05:31:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 05:31:22,636 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 05:31:22,949 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:31:22,949 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-27 05:31:22,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:31:22 BoogieIcfgContainer [2021-08-27 05:31:22,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:31:22,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:31:22,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:31:22,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:31:22,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:31:21" (1/3) ... [2021-08-27 05:31:22,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548a1eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:31:22, skipping insertion in model container [2021-08-27 05:31:22,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:21" (2/3) ... [2021-08-27 05:31:22,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548a1eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:31:22, skipping insertion in model container [2021-08-27 05:31:22,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:31:22" (3/3) ... [2021-08-27 05:31:22,955 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0234-1.i [2021-08-27 05:31:22,959 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:31:22,959 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2021-08-27 05:31:22,985 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:31:22,989 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 05:31:22,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2021-08-27 05:31:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 222 states, 117 states have (on average 1.7777777777777777) internal successors, (208), 187 states have internal predecessors, (208), 20 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-08-27 05:31:23,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:31:23,005 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:31:23,005 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:31:23,005 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:31:23,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:31:23,009 INFO L82 PathProgramCache]: Analyzing trace with hash -91109774, now seen corresponding path program 1 times [2021-08-27 05:31:23,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:31:23,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110263920] [2021-08-27 05:31:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:23,016 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:31:23,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:31:23,020 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 05:31:23,021 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 05:31:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:31:23,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-27 05:31:23,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:31:23,242 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 05:31:23,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:31:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:31:23,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:31:23,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110263920] [2021-08-27 05:31:23,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110263920] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:31:23,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:31:23,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 05:31:23,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199054637] [2021-08-27 05:31:23,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-27 05:31:23,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:31:23,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-27 05:31:23,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 05:31:23,280 INFO L87 Difference]: Start difference. First operand has 222 states, 117 states have (on average 1.7777777777777777) internal successors, (208), 187 states have internal predecessors, (208), 20 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) 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 05:31:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:31:23,297 INFO L93 Difference]: Finished difference Result 222 states and 237 transitions. [2021-08-27 05:31:23,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 05:31:23,298 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 05:31:23,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:31:23,305 INFO L225 Difference]: With dead ends: 222 [2021-08-27 05:31:23,305 INFO L226 Difference]: Without dead ends: 219 [2021-08-27 05:31:23,306 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 05:31:23,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-08-27 05:31:23,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-08-27 05:31:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 111 states have (on average 1.7567567567567568) internal successors, (195), 185 states have internal predecessors, (195), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-08-27 05:31:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2021-08-27 05:31:23,336 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 7 [2021-08-27 05:31:23,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:31:23,336 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2021-08-27 05:31:23,336 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 05:31:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2021-08-27 05:31:23,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 05:31:23,336 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:31:23,337 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:31:23,347 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 05:31:23,545 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 05:31:23,545 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:31:23,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:31:23,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1561102505, now seen corresponding path program 1 times [2021-08-27 05:31:23,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:31:23,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913022782] [2021-08-27 05:31:23,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:23,546 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:31:23,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:31:23,547 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 05:31:23,554 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 05:31:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:31:23,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:31:23,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:31:23,799 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 05:31:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:31:23,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:31:23,842 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 05:31:23,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:31:23,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913022782] [2021-08-27 05:31:23,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913022782] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:31:23,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:31:23,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 05:31:23,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828632461] [2021-08-27 05:31:23,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:31:23,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:31:23,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:31:23,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:31:23,844 INFO L87 Difference]: Start difference. First operand 219 states and 234 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 05:31:24,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:31:24,083 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2021-08-27 05:31:24,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:31:24,083 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 05:31:24,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:31:24,084 INFO L225 Difference]: With dead ends: 218 [2021-08-27 05:31:24,084 INFO L226 Difference]: Without dead ends: 218 [2021-08-27 05:31:24,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:31:24,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-08-27 05:31:24,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-08-27 05:31:24,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 111 states have (on average 1.7477477477477477) internal successors, (194), 184 states have internal predecessors, (194), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-08-27 05:31:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 233 transitions. [2021-08-27 05:31:24,094 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 233 transitions. Word has length 12 [2021-08-27 05:31:24,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:31:24,094 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 233 transitions. [2021-08-27 05:31:24,094 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 05:31:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 233 transitions. [2021-08-27 05:31:24,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 05:31:24,094 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:31:24,094 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:31:24,109 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 05:31:24,295 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 05:31:24,295 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:31:24,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:31:24,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1561102506, now seen corresponding path program 1 times [2021-08-27 05:31:24,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:31:24,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731722524] [2021-08-27 05:31:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:24,297 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:31:24,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:31:24,297 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 05:31:24,299 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 05:31:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:31:24,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 05:31:24,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:31:24,585 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 05:31:24,662 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 05:31:24,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:31:24,948 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 05:31:24,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:31:24,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731722524] [2021-08-27 05:31:24,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731722524] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:31:24,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:31:24,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 2] imperfect sequences [] total 6 [2021-08-27 05:31:24,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739901816] [2021-08-27 05:31:24,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:31:24,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:31:24,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:31:24,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:31:24,950 INFO L87 Difference]: Start difference. First operand 218 states and 233 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 05:31:26,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:31:26,785 INFO L93 Difference]: Finished difference Result 228 states and 243 transitions. [2021-08-27 05:31:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:31:26,787 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 05:31:26,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:31:26,789 INFO L225 Difference]: With dead ends: 228 [2021-08-27 05:31:26,789 INFO L226 Difference]: Without dead ends: 228 [2021-08-27 05:31:26,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 292.4ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:31:26,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-08-27 05:31:26,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-08-27 05:31:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 117 states have (on average 1.7094017094017093) internal successors, (200), 190 states have internal predecessors, (200), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-08-27 05:31:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 243 transitions. [2021-08-27 05:31:26,799 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 243 transitions. Word has length 12 [2021-08-27 05:31:26,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:31:26,799 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 243 transitions. [2021-08-27 05:31:26,799 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 05:31:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 243 transitions. [2021-08-27 05:31:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-08-27 05:31:26,802 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:31:26,802 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 05:31:26,816 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 05:31:27,002 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 05:31:27,003 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:31:27,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:31:27,003 INFO L82 PathProgramCache]: Analyzing trace with hash -394862790, now seen corresponding path program 1 times [2021-08-27 05:31:27,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:31:27,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882477368] [2021-08-27 05:31:27,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:27,004 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:31:27,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:31:27,005 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 05:31:27,006 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 05:31:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:31:27,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 05:31:27,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:31:27,908 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 05:31:27,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:31:29,564 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 05:31:29,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:31:29,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882477368] [2021-08-27 05:31:29,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882477368] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-27 05:31:29,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:31:29,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-08-27 05:31:29,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705114598] [2021-08-27 05:31:29,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 05:31:29,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:31:29,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 05:31:29,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-27 05:31:29,566 INFO L87 Difference]: Start difference. First operand 228 states and 243 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 05:31:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:31:29,994 INFO L93 Difference]: Finished difference Result 245 states and 260 transitions. [2021-08-27 05:31:29,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:31:29,994 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 05:31:29,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:31:29,996 INFO L225 Difference]: With dead ends: 245 [2021-08-27 05:31:29,996 INFO L226 Difference]: Without dead ends: 229 [2021-08-27 05:31:29,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 743.7ms TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-08-27 05:31:29,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-08-27 05:31:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2021-08-27 05:31:30,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 118 states have (on average 1.7033898305084745) internal successors, (201), 191 states have internal predecessors, (201), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-08-27 05:31:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 244 transitions. [2021-08-27 05:31:30,004 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 244 transitions. Word has length 123 [2021-08-27 05:31:30,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:31:30,004 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 244 transitions. [2021-08-27 05:31:30,004 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 05:31:30,004 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 244 transitions. [2021-08-27 05:31:30,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-08-27 05:31:30,007 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:31:30,007 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 05:31:30,017 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 05:31:30,211 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 05:31:30,211 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:31:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:31:30,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1060945400, now seen corresponding path program 1 times [2021-08-27 05:31:30,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:31:30,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050376915] [2021-08-27 05:31:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:31:30,213 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:31:30,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:31:30,213 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 05:31:30,215 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 05:31:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:31:30,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 05:31:30,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:31:31,254 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 05:31:31,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:31:32,970 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 05:31:32,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:31:32,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050376915] [2021-08-27 05:31:32,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050376915] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:31:32,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:31:32,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-27 05:31:32,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493621384] [2021-08-27 05:31:32,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 05:31:32,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:31:32,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 05:31:32,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-08-27 05:31:32,972 INFO L87 Difference]: Start difference. First operand 229 states and 244 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 05:31:33,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:31:33,570 INFO L93 Difference]: Finished difference Result 246 states and 261 transitions. [2021-08-27 05:31:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 05:31:33,573 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 05:31:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:31:33,575 INFO L225 Difference]: With dead ends: 246 [2021-08-27 05:31:33,575 INFO L226 Difference]: Without dead ends: 230 [2021-08-27 05:31:33,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 891.5ms TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-08-27 05:31:33,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-08-27 05:31:33,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-08-27 05:31:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 119 states have (on average 1.6974789915966386) internal successors, (202), 192 states have internal predecessors, (202), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-08-27 05:31:33,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 245 transitions. [2021-08-27 05:31:33,582 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 245 transitions. Word has length 129 [2021-08-27 05:31:33,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:31:33,582 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 245 transitions. [2021-08-27 05:31:33,582 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 05:31:33,582 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 245 transitions. [2021-08-27 05:31:33,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-08-27 05:31:33,583 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:31:33,584 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 05:31:33,596 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 05:31:33,798 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 05:31:33,798 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:31:33,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:31:33,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1927428730, now seen corresponding path program 2 times [2021-08-27 05:31:33,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:31:33,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876672881] [2021-08-27 05:31:33,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:31:33,800 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:31:33,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:31:33,801 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 05:31:33,822 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 05:31:34,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 05:31:34,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:31:34,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 05:31:34,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:31:34,849 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 05:31:34,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:31:36,623 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 05:31:36,624 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:31:36,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876672881] [2021-08-27 05:31:36,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876672881] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:31:36,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:31:36,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-08-27 05:31:36,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791118381] [2021-08-27 05:31:36,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-27 05:31:36,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:31:36,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-27 05:31:36,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-08-27 05:31:36,626 INFO L87 Difference]: Start difference. First operand 230 states and 245 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 05:31:37,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:31:37,328 INFO L93 Difference]: Finished difference Result 247 states and 262 transitions. [2021-08-27 05:31:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 05:31:37,330 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 05:31:37,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:31:37,331 INFO L225 Difference]: With dead ends: 247 [2021-08-27 05:31:37,331 INFO L226 Difference]: Without dead ends: 231 [2021-08-27 05:31:37,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1019.6ms TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-08-27 05:31:37,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-08-27 05:31:37,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-08-27 05:31:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 120 states have (on average 1.6916666666666667) internal successors, (203), 193 states have internal predecessors, (203), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-08-27 05:31:37,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 246 transitions. [2021-08-27 05:31:37,338 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 246 transitions. Word has length 135 [2021-08-27 05:31:37,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:31:37,338 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 246 transitions. [2021-08-27 05:31:37,338 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 05:31:37,338 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 246 transitions. [2021-08-27 05:31:37,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-08-27 05:31:37,339 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:31:37,340 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 05:31:37,354 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 05:31:37,552 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 05:31:37,553 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 71 more)] === [2021-08-27 05:31:37,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:31:37,553 INFO L82 PathProgramCache]: Analyzing trace with hash -2017574712, now seen corresponding path program 3 times [2021-08-27 05:31:37,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:31:37,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185703838] [2021-08-27 05:31:37,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 05:31:37,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:31:37,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:31:37,555 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 05:31:37,556 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 05:31:38,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 05:31:38,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:31:38,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-27 05:31:38,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:31:38,231 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 05:31:38,430 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 05:31:38,573 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-27 05:31:38,574 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 05:31:38,608 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 05:31:38,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:31:52,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:31:52,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185703838] [2021-08-27 05:31:52,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:31:52,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [306070246] [2021-08-27 05:31:52,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 05:31:52,762 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 05:31:52,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 05:31:52,764 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 05:31:52,783 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 05:31:53,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 05:31:53,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:31:53,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-27 05:31:53,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:31:53,632 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 05:31:55,766 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 05:31:59,995 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 05:31:59,995 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 05:32:00,018 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 05:32:00,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:32:08,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:32:08,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605088952] [2021-08-27 05:32:08,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 05:32:08,343 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:32:08,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:32:08,355 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 05:32:08,357 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 05:32:08,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 05:32:08,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:32:08,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 05:32:08,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:32:09,149 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 05:32:09,309 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 05:32:09,473 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-27 05:32:09,474 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 05:32:09,512 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 05:32:09,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:32:22,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:32:22,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:32:22,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 05:32:22,328 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-27 05:32:22,328 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 05:32:22,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr0REQUIRES_VIOLATION [2021-08-27 05:32:22,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:32:22,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:32:22,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:32:22,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:32:22,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr0REQUIRES_VIOLATION [2021-08-27 05:32:22,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr1REQUIRES_VIOLATION [2021-08-27 05:32:22,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr2REQUIRES_VIOLATION [2021-08-27 05:32:22,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr3REQUIRES_VIOLATION [2021-08-27 05:32:22,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr4REQUIRES_VIOLATION [2021-08-27 05:32:22,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr5REQUIRES_VIOLATION [2021-08-27 05:32:22,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION [2021-08-27 05:32:22,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION [2021-08-27 05:32:22,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION [2021-08-27 05:32:22,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION [2021-08-27 05:32:22,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION [2021-08-27 05:32:22,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION [2021-08-27 05:32:22,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:32:22,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:32:22,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr5REQUIRES_VIOLATION [2021-08-27 05:32:22,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr6REQUIRES_VIOLATION [2021-08-27 05:32:22,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr9ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION [2021-08-27 05:32:22,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION [2021-08-27 05:32:22,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION [2021-08-27 05:32:22,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION [2021-08-27 05:32:22,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION [2021-08-27 05:32:22,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION [2021-08-27 05:32:22,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION [2021-08-27 05:32:22,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION [2021-08-27 05:32:22,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:32:22,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:32:22,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:32:22,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:32:22,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:32:22,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:32:22,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:32:22,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:32:22,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:32:22,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:32:22,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:32:22,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:32:22,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:32:22,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:32:22,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:32:22,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:32:22,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr0REQUIRES_VIOLATION [2021-08-27 05:32:22,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr1REQUIRES_VIOLATION [2021-08-27 05:32:22,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr2REQUIRES_VIOLATION [2021-08-27 05:32:22,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr3REQUIRES_VIOLATION [2021-08-27 05:32:22,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr4REQUIRES_VIOLATION [2021-08-27 05:32:22,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr5REQUIRES_VIOLATION [2021-08-27 05:32:22,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr1REQUIRES_VIOLATION [2021-08-27 05:32:22,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr2REQUIRES_VIOLATION [2021-08-27 05:32:22,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr3REQUIRES_VIOLATION [2021-08-27 05:32:22,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr4REQUIRES_VIOLATION [2021-08-27 05:32:22,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr5REQUIRES_VIOLATION [2021-08-27 05:32:22,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr6REQUIRES_VIOLATION [2021-08-27 05:32:22,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr7REQUIRES_VIOLATION [2021-08-27 05:32:22,349 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 05:32:22,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-08-27 05:32:22,764 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 05:32:22,945 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 05:32:22,950 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:32:22,954 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:32:22,954 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:32:22,954 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:32:22,955 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:32:22,955 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:32:22,955 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:32:22,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:32:22 BoogieIcfgContainer [2021-08-27 05:32:22,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:32:22,966 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:32:22,966 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:32:22,967 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:32:22,967 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:31:22" (3/4) ... [2021-08-27 05:32:22,969 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:32:22,969 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:32:22,970 INFO L168 Benchmark]: Toolchain (without parser) took 61531.27 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 30.1 MB in the beginning and 55.9 MB in the end (delta: -25.8 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-08-27 05:32:22,971 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.5 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:32:22,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 449.01 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.0 MB in the beginning and 38.7 MB in the end (delta: -8.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:32:22,973 INFO L168 Benchmark]: Boogie Preprocessor took 60.07 ms. Allocated memory is still 67.1 MB. Free memory was 38.7 MB in the beginning and 47.9 MB in the end (delta: -9.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:32:22,973 INFO L168 Benchmark]: RCFGBuilder took 999.50 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 47.6 MB in the beginning and 42.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. [2021-08-27 05:32:22,974 INFO L168 Benchmark]: TraceAbstraction took 60014.07 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 42.0 MB in the beginning and 55.9 MB in the end (delta: -13.9 MB). Peak memory consumption was 58.5 MB. Max. memory is 16.1 GB. [2021-08-27 05:32:22,974 INFO L168 Benchmark]: Witness Printer took 3.08 ms. Allocated memory is still 119.5 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:32:22,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.5 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 449.01 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.0 MB in the beginning and 38.7 MB in the end (delta: -8.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.07 ms. Allocated memory is still 67.1 MB. Free memory was 38.7 MB in the beginning and 47.9 MB in the end (delta: -9.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 999.50 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 47.6 MB in the beginning and 42.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 60014.07 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 42.0 MB in the beginning and 55.9 MB in the end (delta: -13.9 MB). Peak memory consumption was 58.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.08 ms. Allocated memory is still 119.5 MB. Free memory is still 55.9 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: [L767] static struct L0 *list; [L769] 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: 728]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 730]: 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: 718]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free 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: 720]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 720]: 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: 748]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 748]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 765]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 760]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 760]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 760]: 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, 246 locations, 75 error locations. Started 1 CEGAR loops. OverallTime: 59964.5ms, OverallIterations: 7, TraceHistogramMax: 18, EmptinessCheckTime: 14.5ms, AutomataDifference: 3857.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1361 SDtfs, 64 SDslu, 7065 SDs, 0 SdLazy, 683 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2532.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 844 GetRequests, 783 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2950.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred 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: 59.9ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 173.5ms SsaConstructionTime, 521.3ms SatisfiabilityAnalysisTime, 7615.9ms 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 05:32:23,033 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...