./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/list-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 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/list-ext-properties/list-ext.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 0539ac658883b1641a4574e23a99ec21471d0b6a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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/list-ext-properties/list-ext.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 0539ac658883b1641a4574e23a99ec21471d0b6a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 03:34:47,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:34:47,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:34:47,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:34:47,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:34:47,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:34:47,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:34:47,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:34:47,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:34:47,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:34:47,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:34:47,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:34:47,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:34:47,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:34:47,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:34:47,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:34:47,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:34:47,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:34:47,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:34:47,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:34:47,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:34:47,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:34:47,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:34:47,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:34:47,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:34:47,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:34:47,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:34:47,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:34:47,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:34:47,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:34:47,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:34:47,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:34:47,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:34:47,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:34:47,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:34:47,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:34:47,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:34:47,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:34:47,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:34:47,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:34:47,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:34:47,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:34:47,678 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:34:47,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:34:47,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:34:47,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:34:47,681 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:34:47,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:34:47,682 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:34:47,682 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:34:47,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:34:47,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:34:47,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:34:47,683 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:34:47,683 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:34:47,684 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:34:47,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:34:47,684 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:34:47,684 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:34:47,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:34:47,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:34:47,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:34:47,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:34:47,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:34:47,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:34:47,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:34:47,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:34:47,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:34:47,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:34:47,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:34:47,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0539ac658883b1641a4574e23a99ec21471d0b6a [2020-10-26 03:34:48,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:34:48,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:34:48,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:34:48,176 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:34:48,177 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:34:48,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-10-26 03:34:48,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ffc0cdab/b1b293cad2d747b08d9489ce7e8b1087/FLAGedef1c995 [2020-10-26 03:34:49,000 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:34:49,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-10-26 03:34:49,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ffc0cdab/b1b293cad2d747b08d9489ce7e8b1087/FLAGedef1c995 [2020-10-26 03:34:49,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ffc0cdab/b1b293cad2d747b08d9489ce7e8b1087 [2020-10-26 03:34:49,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:34:49,279 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:34:49,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:34:49,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:34:49,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:34:49,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:34:49" (1/1) ... [2020-10-26 03:34:49,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408b90e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:34:49, skipping insertion in model container [2020-10-26 03:34:49,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:34:49" (1/1) ... [2020-10-26 03:34:49,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:34:49,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:34:49,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:34:49,821 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:34:49,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:34:49,955 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:34:49,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:34:49 WrapperNode [2020-10-26 03:34:49,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:34:49,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:34:49,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:34:49,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:34:49,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:34:49" (1/1) ... [2020-10-26 03:34:49,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:34:49" (1/1) ... [2020-10-26 03:34:49,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:34:49" (1/1) ... [2020-10-26 03:34:49,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:34:49" (1/1) ... [2020-10-26 03:34:50,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:34:49" (1/1) ... [2020-10-26 03:34:50,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:34:49" (1/1) ... [2020-10-26 03:34:50,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:34:49" (1/1) ... [2020-10-26 03:34:50,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:34:50,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:34:50,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:34:50,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:34:50,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:34:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:34:50,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:34:50,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:34:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 03:34:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-26 03:34:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-26 03:34:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-26 03:34:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-26 03:34:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-26 03:34:50,138 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-26 03:34:50,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:34:50,138 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:34:50,138 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 03:34:50,138 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-26 03:34:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-26 03:34:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 03:34:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:34:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:34:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-26 03:34:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-26 03:34:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-26 03:34:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-26 03:34:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-26 03:34:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-26 03:34:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-26 03:34:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-26 03:34:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-26 03:34:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-26 03:34:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-26 03:34:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-26 03:34:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-26 03:34:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-26 03:34:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-26 03:34:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-26 03:34:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-26 03:34:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-26 03:34:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-26 03:34:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-26 03:34:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-26 03:34:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-26 03:34:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-26 03:34:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-26 03:34:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-26 03:34:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-26 03:34:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-26 03:34:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-26 03:34:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-26 03:34:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-26 03:34:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-26 03:34:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-26 03:34:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-26 03:34:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-26 03:34:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-26 03:34:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-26 03:34:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-26 03:34:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-26 03:34:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-26 03:34:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-26 03:34:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-26 03:34:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-26 03:34:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-26 03:34:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-26 03:34:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-26 03:34:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-26 03:34:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-26 03:34:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-26 03:34:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-26 03:34:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-26 03:34:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-26 03:34:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-26 03:34:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-26 03:34:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-26 03:34:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-26 03:34:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:34:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-26 03:34:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-26 03:34:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:34:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-26 03:34:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-26 03:34:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-26 03:34:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-26 03:34:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-26 03:34:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-26 03:34:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-26 03:34:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 03:34:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-26 03:34:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-26 03:34:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-26 03:34:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-26 03:34:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-26 03:34:50,150 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-26 03:34:50,150 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-26 03:34:50,150 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-26 03:34:50,150 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-26 03:34:50,150 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-26 03:34:50,150 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-26 03:34:50,150 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-26 03:34:50,151 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-26 03:34:50,151 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-26 03:34:50,151 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-26 03:34:50,151 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-26 03:34:50,151 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-26 03:34:50,151 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-26 03:34:50,151 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-26 03:34:50,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-26 03:34:50,152 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-26 03:34:50,152 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-26 03:34:50,152 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-26 03:34:50,152 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-26 03:34:50,152 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-26 03:34:50,152 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-26 03:34:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-26 03:34:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-26 03:34:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-26 03:34:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-26 03:34:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-26 03:34:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-26 03:34:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-26 03:34:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-26 03:34:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-26 03:34:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-26 03:34:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-26 03:34:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-26 03:34:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-26 03:34:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-26 03:34:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:34:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 03:34:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:34:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-26 03:34:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-26 03:34:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:34:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:34:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:34:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 03:34:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:34:50,598 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-26 03:34:50,911 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:34:50,911 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 03:34:50,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:34:50 BoogieIcfgContainer [2020-10-26 03:34:50,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:34:50,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:34:50,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:34:50,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:34:50,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:34:49" (1/3) ... [2020-10-26 03:34:50,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff0601d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:34:50, skipping insertion in model container [2020-10-26 03:34:50,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:34:49" (2/3) ... [2020-10-26 03:34:50,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff0601d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:34:50, skipping insertion in model container [2020-10-26 03:34:50,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:34:50" (3/3) ... [2020-10-26 03:34:50,924 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-10-26 03:34:50,936 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:34:50,942 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-10-26 03:34:50,957 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-10-26 03:34:50,982 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:34:50,982 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:34:50,982 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:34:50,983 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:34:50,983 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:34:50,983 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:34:50,983 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:34:50,983 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:34:51,003 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-26 03:34:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:34:51,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:34:51,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:34:51,015 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:34:51,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:34:51,022 INFO L82 PathProgramCache]: Analyzing trace with hash -849411233, now seen corresponding path program 1 times [2020-10-26 03:34:51,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:34:51,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931774181] [2020-10-26 03:34:51,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:34:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:51,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:34:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:34:51,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931774181] [2020-10-26 03:34:51,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:34:51,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:34:51,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487831160] [2020-10-26 03:34:51,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 03:34:51,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:34:51,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 03:34:51,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:34:51,348 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 3 states. [2020-10-26 03:34:51,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:34:51,662 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2020-10-26 03:34:51,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 03:34:51,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-26 03:34:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:34:51,685 INFO L225 Difference]: With dead ends: 100 [2020-10-26 03:34:51,688 INFO L226 Difference]: Without dead ends: 92 [2020-10-26 03:34:51,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:34:51,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-26 03:34:51,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-26 03:34:51,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-26 03:34:51,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2020-10-26 03:34:51,756 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 11 [2020-10-26 03:34:51,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:34:51,757 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2020-10-26 03:34:51,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 03:34:51,758 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2020-10-26 03:34:51,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 03:34:51,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:34:51,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:34:51,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:34:51,759 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:34:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:34:51,760 INFO L82 PathProgramCache]: Analyzing trace with hash -562931253, now seen corresponding path program 1 times [2020-10-26 03:34:51,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:34:51,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334415767] [2020-10-26 03:34:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:34:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:51,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:34:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:34:51,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334415767] [2020-10-26 03:34:51,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:34:51,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:34:51,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269212731] [2020-10-26 03:34:51,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:34:51,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:34:51,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:34:51,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:34:51,967 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 5 states. [2020-10-26 03:34:52,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:34:52,246 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2020-10-26 03:34:52,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:34:52,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-26 03:34:52,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:34:52,248 INFO L225 Difference]: With dead ends: 113 [2020-10-26 03:34:52,248 INFO L226 Difference]: Without dead ends: 113 [2020-10-26 03:34:52,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:34:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-26 03:34:52,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 93. [2020-10-26 03:34:52,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-26 03:34:52,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2020-10-26 03:34:52,260 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 12 [2020-10-26 03:34:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:34:52,261 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2020-10-26 03:34:52,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:34:52,261 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2020-10-26 03:34:52,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 03:34:52,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:34:52,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:34:52,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:34:52,263 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:34:52,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:34:52,263 INFO L82 PathProgramCache]: Analyzing trace with hash -562931252, now seen corresponding path program 1 times [2020-10-26 03:34:52,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:34:52,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998056257] [2020-10-26 03:34:52,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:34:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:52,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:34:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:52,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:34:52,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998056257] [2020-10-26 03:34:52,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:34:52,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:34:52,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070764723] [2020-10-26 03:34:52,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:34:52,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:34:52,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:34:52,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:34:52,356 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand 5 states. [2020-10-26 03:34:52,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:34:52,654 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2020-10-26 03:34:52,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:34:52,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-26 03:34:52,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:34:52,657 INFO L225 Difference]: With dead ends: 129 [2020-10-26 03:34:52,658 INFO L226 Difference]: Without dead ends: 129 [2020-10-26 03:34:52,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:34:52,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-26 03:34:52,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2020-10-26 03:34:52,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-26 03:34:52,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2020-10-26 03:34:52,670 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 12 [2020-10-26 03:34:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:34:52,670 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2020-10-26 03:34:52,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:34:52,671 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2020-10-26 03:34:52,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:34:52,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:34:52,672 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:34:52,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:34:52,673 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:34:52,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:34:52,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1567887182, now seen corresponding path program 1 times [2020-10-26 03:34:52,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:34:52,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593091595] [2020-10-26 03:34:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:34:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:52,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:34:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:34:52,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593091595] [2020-10-26 03:34:52,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:34:52,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 03:34:52,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570929045] [2020-10-26 03:34:52,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:34:52,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:34:52,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:34:52,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:34:52,827 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand 7 states. [2020-10-26 03:34:53,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:34:53,369 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2020-10-26 03:34:53,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:34:53,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-26 03:34:53,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:34:53,371 INFO L225 Difference]: With dead ends: 157 [2020-10-26 03:34:53,372 INFO L226 Difference]: Without dead ends: 157 [2020-10-26 03:34:53,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:34:53,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-26 03:34:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 117. [2020-10-26 03:34:53,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-26 03:34:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-10-26 03:34:53,382 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 21 [2020-10-26 03:34:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:34:53,382 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-10-26 03:34:53,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:34:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-10-26 03:34:53,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:34:53,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:34:53,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:34:53,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:34:53,385 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:34:53,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:34:53,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1567887181, now seen corresponding path program 1 times [2020-10-26 03:34:53,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:34:53,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724950549] [2020-10-26 03:34:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:34:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:53,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:34:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:53,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:34:53,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724950549] [2020-10-26 03:34:53,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:34:53,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 03:34:53,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65668623] [2020-10-26 03:34:53,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:34:53,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:34:53,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:34:53,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:34:53,523 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 7 states. [2020-10-26 03:34:54,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:34:54,200 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2020-10-26 03:34:54,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:34:54,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-26 03:34:54,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:34:54,204 INFO L225 Difference]: With dead ends: 160 [2020-10-26 03:34:54,204 INFO L226 Difference]: Without dead ends: 160 [2020-10-26 03:34:54,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 03:34:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-26 03:34:54,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 101. [2020-10-26 03:34:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-26 03:34:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-10-26 03:34:54,227 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 21 [2020-10-26 03:34:54,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:34:54,230 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-10-26 03:34:54,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:34:54,231 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-10-26 03:34:54,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 03:34:54,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:34:54,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:34:54,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 03:34:54,235 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:34:54,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:34:54,236 INFO L82 PathProgramCache]: Analyzing trace with hash -517016407, now seen corresponding path program 1 times [2020-10-26 03:34:54,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:34:54,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760123003] [2020-10-26 03:34:54,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:34:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:54,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:34:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:34:54,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760123003] [2020-10-26 03:34:54,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:34:54,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-26 03:34:54,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826444642] [2020-10-26 03:34:54,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 03:34:54,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:34:54,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 03:34:54,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:34:54,432 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 8 states. [2020-10-26 03:34:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:34:54,863 INFO L93 Difference]: Finished difference Result 190 states and 210 transitions. [2020-10-26 03:34:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:34:54,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-26 03:34:54,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:34:54,866 INFO L225 Difference]: With dead ends: 190 [2020-10-26 03:34:54,867 INFO L226 Difference]: Without dead ends: 190 [2020-10-26 03:34:54,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:34:54,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-26 03:34:54,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 112. [2020-10-26 03:34:54,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-26 03:34:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-10-26 03:34:54,879 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 22 [2020-10-26 03:34:54,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:34:54,882 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-10-26 03:34:54,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 03:34:54,882 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-10-26 03:34:54,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-26 03:34:54,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:34:54,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:34:54,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 03:34:54,884 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:34:54,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:34:54,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1315861814, now seen corresponding path program 1 times [2020-10-26 03:34:54,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:34:54,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529441370] [2020-10-26 03:34:54,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:34:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:55,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:34:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:34:55,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529441370] [2020-10-26 03:34:55,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:34:55,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-26 03:34:55,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769888312] [2020-10-26 03:34:55,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 03:34:55,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:34:55,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 03:34:55,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:34:55,032 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 8 states. [2020-10-26 03:34:55,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:34:55,467 INFO L93 Difference]: Finished difference Result 176 states and 193 transitions. [2020-10-26 03:34:55,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:34:55,468 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-26 03:34:55,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:34:55,469 INFO L225 Difference]: With dead ends: 176 [2020-10-26 03:34:55,469 INFO L226 Difference]: Without dead ends: 176 [2020-10-26 03:34:55,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:34:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-26 03:34:55,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 114. [2020-10-26 03:34:55,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-26 03:34:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2020-10-26 03:34:55,489 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 24 [2020-10-26 03:34:55,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:34:55,490 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2020-10-26 03:34:55,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 03:34:55,490 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2020-10-26 03:34:55,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-26 03:34:55,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:34:55,497 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:34:55,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 03:34:55,498 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:34:55,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:34:55,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1990956336, now seen corresponding path program 1 times [2020-10-26 03:34:55,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:34:55,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629233655] [2020-10-26 03:34:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:34:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:55,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:34:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:34:55,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629233655] [2020-10-26 03:34:55,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:34:55,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 03:34:55,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256831906] [2020-10-26 03:34:55,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:34:55,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:34:55,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:34:55,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:34:55,628 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 7 states. [2020-10-26 03:34:56,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:34:56,042 INFO L93 Difference]: Finished difference Result 129 states and 146 transitions. [2020-10-26 03:34:56,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:34:56,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-26 03:34:56,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:34:56,046 INFO L225 Difference]: With dead ends: 129 [2020-10-26 03:34:56,046 INFO L226 Difference]: Without dead ends: 129 [2020-10-26 03:34:56,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:34:56,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-26 03:34:56,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2020-10-26 03:34:56,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-26 03:34:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-10-26 03:34:56,052 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 24 [2020-10-26 03:34:56,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:34:56,053 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-10-26 03:34:56,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:34:56,055 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-10-26 03:34:56,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-26 03:34:56,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:34:56,059 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:34:56,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 03:34:56,059 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:34:56,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:34:56,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1990956337, now seen corresponding path program 1 times [2020-10-26 03:34:56,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:34:56,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610509615] [2020-10-26 03:34:56,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:34:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:56,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:34:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:34:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:34:56,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610509615] [2020-10-26 03:34:56,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:34:56,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 03:34:56,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114711305] [2020-10-26 03:34:56,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:34:56,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:34:56,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:34:56,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:34:56,216 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 7 states. [2020-10-26 03:34:56,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:34:56,767 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2020-10-26 03:34:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:34:56,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-26 03:34:56,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:34:56,769 INFO L225 Difference]: With dead ends: 127 [2020-10-26 03:34:56,769 INFO L226 Difference]: Without dead ends: 127 [2020-10-26 03:34:56,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 03:34:56,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-26 03:34:56,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 97. [2020-10-26 03:34:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-26 03:34:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-10-26 03:34:56,781 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 24 [2020-10-26 03:34:56,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:34:56,784 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-10-26 03:34:56,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:34:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-10-26 03:34:56,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 03:34:56,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:34:56,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:34:56,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 03:34:56,789 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:34:56,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:34:56,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1772362976, now seen corresponding path program 1 times [2020-10-26 03:34:56,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:34:56,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998342993] [2020-10-26 03:34:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:34:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:34:56,811 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:34:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:34:56,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:34:56,857 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 03:34:56,858 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:34:56,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 03:34:56,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:34:56 BoogieIcfgContainer [2020-10-26 03:34:56,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:34:56,893 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:34:56,893 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:34:56,896 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:34:56,897 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:34:50" (3/4) ... [2020-10-26 03:34:56,902 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 03:34:56,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:34:56,907 INFO L168 Benchmark]: Toolchain (without parser) took 7631.89 ms. Allocated memory was 48.2 MB in the beginning and 125.8 MB in the end (delta: 77.6 MB). Free memory was 24.1 MB in the beginning and 40.6 MB in the end (delta: -16.5 MB). Peak memory consumption was 61.6 MB. Max. memory is 16.1 GB. [2020-10-26 03:34:56,908 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 39.8 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:34:56,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.39 ms. Allocated memory is still 48.2 MB. Free memory was 23.5 MB in the beginning and 22.7 MB in the end (delta: 777.4 kB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-10-26 03:34:56,910 INFO L168 Benchmark]: Boogie Preprocessor took 74.19 ms. Allocated memory is still 48.2 MB. Free memory was 22.7 MB in the beginning and 19.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:34:56,912 INFO L168 Benchmark]: RCFGBuilder took 881.07 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 19.8 MB in the beginning and 33.6 MB in the end (delta: -13.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-10-26 03:34:56,915 INFO L168 Benchmark]: TraceAbstraction took 5976.82 ms. Allocated memory was 58.7 MB in the beginning and 125.8 MB in the end (delta: 67.1 MB). Free memory was 33.2 MB in the beginning and 40.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 58.3 MB. Max. memory is 16.1 GB. [2020-10-26 03:34:56,916 INFO L168 Benchmark]: Witness Printer took 11.31 ms. Allocated memory is still 125.8 MB. Free memory is still 40.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:34:56,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 39.8 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 674.39 ms. Allocated memory is still 48.2 MB. Free memory was 23.5 MB in the beginning and 22.7 MB in the end (delta: 777.4 kB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.19 ms. Allocated memory is still 48.2 MB. Free memory was 22.7 MB in the beginning and 19.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 881.07 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 19.8 MB in the beginning and 33.6 MB in the end (delta: -13.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5976.82 ms. Allocated memory was 58.7 MB in the beginning and 125.8 MB in the end (delta: 67.1 MB). Free memory was 33.2 MB in the beginning and 40.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 58.3 MB. Max. memory is 16.1 GB. * Witness Printer took 11.31 ms. Allocated memory is still 125.8 MB. Free memory is still 40.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L535] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L536] List t; [L537] List p = a; VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L555] p->n = 0 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L559] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-ext.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 119 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.8s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 637 SDtfs, 920 SDslu, 1186 SDs, 0 SdLazy, 2627 SolverSat, 168 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 322 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 16064 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 16/16 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-5485861 [2020-10-26 03:34:59,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:34:59,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:34:59,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:34:59,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:34:59,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:34:59,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:34:59,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:34:59,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:34:59,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:34:59,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:34:59,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:34:59,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:34:59,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:34:59,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:34:59,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:34:59,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:34:59,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:34:59,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:34:59,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:34:59,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:34:59,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:34:59,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:34:59,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:34:59,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:34:59,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:34:59,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:34:59,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:34:59,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:34:59,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:34:59,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:34:59,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:34:59,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:34:59,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:34:59,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:34:59,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:34:59,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:34:59,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:34:59,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:34:59,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:34:59,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:34:59,786 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-26 03:34:59,848 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:34:59,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:34:59,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:34:59,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:34:59,854 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:34:59,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:34:59,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:34:59,855 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:34:59,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:34:59,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:34:59,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:34:59,857 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:34:59,857 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:34:59,858 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:34:59,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:34:59,858 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:34:59,859 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-26 03:34:59,859 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-26 03:34:59,859 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:34:59,859 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:34:59,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:34:59,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:34:59,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:34:59,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:34:59,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:34:59,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:34:59,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:34:59,862 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-26 03:34:59,862 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-26 03:34:59,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:34:59,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-26 03:34:59,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0539ac658883b1641a4574e23a99ec21471d0b6a [2020-10-26 03:35:00,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:35:00,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:35:00,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:35:00,368 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:35:00,369 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:35:00,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-10-26 03:35:00,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f1e7954/db134da63e15471e9548a7ccb6254caa/FLAGcd38895e9 [2020-10-26 03:35:01,251 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:35:01,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-10-26 03:35:01,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f1e7954/db134da63e15471e9548a7ccb6254caa/FLAGcd38895e9 [2020-10-26 03:35:01,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f1e7954/db134da63e15471e9548a7ccb6254caa [2020-10-26 03:35:01,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:35:01,562 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:35:01,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:35:01,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:35:01,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:35:01,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:35:01" (1/1) ... [2020-10-26 03:35:01,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f9600c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:35:01, skipping insertion in model container [2020-10-26 03:35:01,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:35:01" (1/1) ... [2020-10-26 03:35:01,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:35:01,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:35:01,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:35:01,994 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:35:02,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:35:02,221 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:35:02,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:35:02 WrapperNode [2020-10-26 03:35:02,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:35:02,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:35:02,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:35:02,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:35:02,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:35:02" (1/1) ... [2020-10-26 03:35:02,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:35:02" (1/1) ... [2020-10-26 03:35:02,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:35:02" (1/1) ... [2020-10-26 03:35:02,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:35:02" (1/1) ... [2020-10-26 03:35:02,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:35:02" (1/1) ... [2020-10-26 03:35:02,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:35:02" (1/1) ... [2020-10-26 03:35:02,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:35:02" (1/1) ... [2020-10-26 03:35:02,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:35:02,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:35:02,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:35:02,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:35:02,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:35:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:35:02,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:35:02,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:35:02,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-26 03:35:02,443 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 03:35:02,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-26 03:35:02,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-26 03:35:02,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-26 03:35:02,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-26 03:35:02,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-26 03:35:02,445 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-26 03:35:02,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:35:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:35:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 03:35:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-26 03:35:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-26 03:35:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 03:35:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:35:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:35:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-26 03:35:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-26 03:35:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-26 03:35:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-26 03:35:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-26 03:35:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-26 03:35:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-26 03:35:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-26 03:35:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-26 03:35:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-26 03:35:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-26 03:35:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-26 03:35:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-26 03:35:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-26 03:35:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-26 03:35:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-26 03:35:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-26 03:35:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-26 03:35:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-26 03:35:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-26 03:35:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-26 03:35:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-26 03:35:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-26 03:35:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-26 03:35:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-26 03:35:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-26 03:35:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-26 03:35:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-26 03:35:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-26 03:35:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-26 03:35:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-26 03:35:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-26 03:35:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-26 03:35:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-26 03:35:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-26 03:35:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-26 03:35:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-26 03:35:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-26 03:35:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-26 03:35:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-26 03:35:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-26 03:35:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-26 03:35:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-26 03:35:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-26 03:35:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-26 03:35:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-26 03:35:02,456 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-26 03:35:02,456 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-26 03:35:02,456 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-26 03:35:02,456 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-26 03:35:02,456 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-26 03:35:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-26 03:35:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-26 03:35:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-26 03:35:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-26 03:35:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:35:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-26 03:35:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-26 03:35:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:35:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-26 03:35:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-26 03:35:02,459 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-26 03:35:02,459 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-26 03:35:02,459 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-26 03:35:02,459 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-26 03:35:02,459 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-26 03:35:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 03:35:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-26 03:35:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-26 03:35:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-26 03:35:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-26 03:35:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-26 03:35:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-26 03:35:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-26 03:35:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-26 03:35:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-26 03:35:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-26 03:35:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-26 03:35:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-26 03:35:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-26 03:35:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-26 03:35:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-26 03:35:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-26 03:35:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-26 03:35:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-26 03:35:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-26 03:35:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-26 03:35:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-26 03:35:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-26 03:35:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-26 03:35:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-26 03:35:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-26 03:35:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-26 03:35:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-26 03:35:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-26 03:35:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-26 03:35:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-26 03:35:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-26 03:35:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-26 03:35:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-26 03:35:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-26 03:35:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-26 03:35:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-26 03:35:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-26 03:35:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-26 03:35:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-26 03:35:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-26 03:35:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:35:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 03:35:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-26 03:35:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-26 03:35:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-26 03:35:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-26 03:35:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:35:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:35:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-26 03:35:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:35:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-26 03:35:02,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-26 03:35:02,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-26 03:35:03,058 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-26 03:35:03,490 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:35:03,490 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 03:35:03,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:35:03 BoogieIcfgContainer [2020-10-26 03:35:03,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:35:03,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:35:03,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:35:03,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:35:03,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:35:01" (1/3) ... [2020-10-26 03:35:03,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3104af50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:35:03, skipping insertion in model container [2020-10-26 03:35:03,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:35:02" (2/3) ... [2020-10-26 03:35:03,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3104af50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:35:03, skipping insertion in model container [2020-10-26 03:35:03,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:35:03" (3/3) ... [2020-10-26 03:35:03,503 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-10-26 03:35:03,517 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:35:03,528 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-10-26 03:35:03,543 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-10-26 03:35:03,566 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:35:03,567 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:35:03,567 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:35:03,567 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:35:03,567 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:35:03,567 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:35:03,567 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:35:03,567 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:35:03,586 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-10-26 03:35:03,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:35:03,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:35:03,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:35:03,597 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:35:03,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:35:03,603 INFO L82 PathProgramCache]: Analyzing trace with hash -243684713, now seen corresponding path program 1 times [2020-10-26 03:35:03,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:35:03,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601654650] [2020-10-26 03:35:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-26 03:35:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:35:03,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 03:35:03,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:35:03,958 INFO L384 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 [2020-10-26 03:35:03,958 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:04,003 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:04,003 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:04,004 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-26 03:35:04,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:04,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:35:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:04,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601654650] [2020-10-26 03:35:04,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:35:04,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-26 03:35:04,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841310325] [2020-10-26 03:35:04,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:35:04,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:35:04,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:35:04,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:35:04,182 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 6 states. [2020-10-26 03:35:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:35:05,174 INFO L93 Difference]: Finished difference Result 160 states and 175 transitions. [2020-10-26 03:35:05,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:35:05,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-26 03:35:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:35:05,193 INFO L225 Difference]: With dead ends: 160 [2020-10-26 03:35:05,193 INFO L226 Difference]: Without dead ends: 149 [2020-10-26 03:35:05,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:35:05,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-26 03:35:05,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 114. [2020-10-26 03:35:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-26 03:35:05,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 138 transitions. [2020-10-26 03:35:05,275 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 138 transitions. Word has length 10 [2020-10-26 03:35:05,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:35:05,275 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 138 transitions. [2020-10-26 03:35:05,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:35:05,276 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 138 transitions. [2020-10-26 03:35:05,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:35:05,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:35:05,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:35:05,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-26 03:35:05,482 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:35:05,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:35:05,484 INFO L82 PathProgramCache]: Analyzing trace with hash -243684714, now seen corresponding path program 1 times [2020-10-26 03:35:05,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:35:05,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981297123] [2020-10-26 03:35:05,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-26 03:35:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:35:05,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 03:35:05,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:35:05,648 INFO L384 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 [2020-10-26 03:35:05,648 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:05,652 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:05,653 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:05,653 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-26 03:35:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:05,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:35:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:05,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981297123] [2020-10-26 03:35:05,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:35:05,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-26 03:35:05,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428402180] [2020-10-26 03:35:05,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:35:05,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:35:05,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:35:05,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:35:05,703 INFO L87 Difference]: Start difference. First operand 114 states and 138 transitions. Second operand 4 states. [2020-10-26 03:35:06,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:35:06,048 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2020-10-26 03:35:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:35:06,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-26 03:35:06,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:35:06,056 INFO L225 Difference]: With dead ends: 109 [2020-10-26 03:35:06,056 INFO L226 Difference]: Without dead ends: 109 [2020-10-26 03:35:06,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:35:06,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-26 03:35:06,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-10-26 03:35:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-26 03:35:06,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-10-26 03:35:06,067 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 10 [2020-10-26 03:35:06,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:35:06,068 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-10-26 03:35:06,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:35:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-10-26 03:35:06,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 03:35:06,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:35:06,070 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:35:06,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-26 03:35:06,283 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:35:06,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:35:06,285 INFO L82 PathProgramCache]: Analyzing trace with hash 235389844, now seen corresponding path program 1 times [2020-10-26 03:35:06,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:35:06,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889807174] [2020-10-26 03:35:06,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-26 03:35:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:35:06,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 03:35:06,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:35:06,489 INFO L384 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 [2020-10-26 03:35:06,490 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:06,498 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:06,499 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:06,499 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-26 03:35:06,549 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-26 03:35:06,550 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:06,568 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:06,580 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-26 03:35:06,581 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:06,595 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:06,597 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:06,598 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-26 03:35:06,660 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-26 03:35:06,660 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:06,673 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:06,677 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-10-26 03:35:06,678 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:06,684 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:06,685 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:06,685 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-26 03:35:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:06,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:35:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:06,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889807174] [2020-10-26 03:35:06,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:35:06,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-26 03:35:06,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897559965] [2020-10-26 03:35:06,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 03:35:06,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:35:06,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 03:35:06,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:35:06,996 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 10 states. [2020-10-26 03:35:08,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:35:08,944 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2020-10-26 03:35:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 03:35:08,947 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-26 03:35:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:35:08,949 INFO L225 Difference]: With dead ends: 149 [2020-10-26 03:35:08,949 INFO L226 Difference]: Without dead ends: 149 [2020-10-26 03:35:08,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-26 03:35:08,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-26 03:35:08,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 99. [2020-10-26 03:35:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-26 03:35:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-10-26 03:35:08,960 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 17 [2020-10-26 03:35:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:35:08,961 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-10-26 03:35:08,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 03:35:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-10-26 03:35:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 03:35:08,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:35:08,962 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:35:09,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-26 03:35:09,163 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:35:09,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:35:09,164 INFO L82 PathProgramCache]: Analyzing trace with hash 235389843, now seen corresponding path program 1 times [2020-10-26 03:35:09,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:35:09,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069341991] [2020-10-26 03:35:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-26 03:35:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:35:09,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 03:35:09,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:35:09,334 INFO L384 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 [2020-10-26 03:35:09,334 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:09,337 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:09,337 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:09,337 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-26 03:35:09,358 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-26 03:35:09,359 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:09,367 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:09,368 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:09,369 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-26 03:35:09,392 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-10-26 03:35:09,393 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:09,396 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:09,396 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:09,396 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-10-26 03:35:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:09,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:35:09,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:09,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069341991] [2020-10-26 03:35:09,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:35:09,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-26 03:35:09,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775690798] [2020-10-26 03:35:09,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:35:09,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:35:09,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:35:09,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:35:09,463 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 6 states. [2020-10-26 03:35:10,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:35:10,131 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2020-10-26 03:35:10,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:35:10,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-26 03:35:10,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:35:10,141 INFO L225 Difference]: With dead ends: 135 [2020-10-26 03:35:10,141 INFO L226 Difference]: Without dead ends: 135 [2020-10-26 03:35:10,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:35:10,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-26 03:35:10,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 93. [2020-10-26 03:35:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-26 03:35:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2020-10-26 03:35:10,149 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 17 [2020-10-26 03:35:10,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:35:10,149 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2020-10-26 03:35:10,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:35:10,149 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2020-10-26 03:35:10,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 03:35:10,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:35:10,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:35:10,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-26 03:35:10,369 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:35:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:35:10,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1387471408, now seen corresponding path program 1 times [2020-10-26 03:35:10,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:35:10,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188296295] [2020-10-26 03:35:10,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-26 03:35:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:35:10,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 03:35:10,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:35:10,578 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-26 03:35:10,578 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:10,587 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:10,587 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:10,588 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-10-26 03:35:10,649 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-10-26 03:35:10,650 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 13 [2020-10-26 03:35:10,651 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:10,661 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:10,662 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:10,662 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-10-26 03:35:10,695 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-26 03:35:10,698 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:10,700 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:10,700 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:10,701 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-10-26 03:35:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:10,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:35:10,784 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:35:10,794 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:10,795 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:35:10,795 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2020-10-26 03:35:10,873 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 152 [2020-10-26 03:35:10,877 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-26 03:35:10,994 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2020-10-26 03:35:10,995 INFO L625 ElimStorePlain]: treesize reduction 107, result has 22.5 percent of original size [2020-10-26 03:35:10,997 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-26 03:35:10,997 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:24 [2020-10-26 03:35:11,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:11,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188296295] [2020-10-26 03:35:11,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:35:11,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2020-10-26 03:35:11,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073345153] [2020-10-26 03:35:11,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 03:35:11,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:35:11,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 03:35:11,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 03:35:11,015 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand 11 states. [2020-10-26 03:35:12,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:35:12,029 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2020-10-26 03:35:12,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 03:35:12,030 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-10-26 03:35:12,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:35:12,031 INFO L225 Difference]: With dead ends: 191 [2020-10-26 03:35:12,031 INFO L226 Difference]: Without dead ends: 191 [2020-10-26 03:35:12,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-26 03:35:12,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-26 03:35:12,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 100. [2020-10-26 03:35:12,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-26 03:35:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-26 03:35:12,041 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 18 [2020-10-26 03:35:12,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:35:12,041 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-26 03:35:12,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 03:35:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-26 03:35:12,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 03:35:12,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:35:12,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:35:12,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-26 03:35:12,256 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:35:12,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:35:12,257 INFO L82 PathProgramCache]: Analyzing trace with hash 2130023316, now seen corresponding path program 1 times [2020-10-26 03:35:12,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:35:12,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361296262] [2020-10-26 03:35:12,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-26 03:35:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:35:12,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 03:35:12,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:35:12,404 INFO L384 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 [2020-10-26 03:35:12,404 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:12,407 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:12,407 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:12,407 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-26 03:35:12,420 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-26 03:35:12,420 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:12,430 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:12,431 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:12,431 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-26 03:35:12,453 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-10-26 03:35:12,454 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:12,456 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:12,456 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:12,456 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-10-26 03:35:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:12,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:35:12,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:12,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361296262] [2020-10-26 03:35:12,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:35:12,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-26 03:35:12,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592798033] [2020-10-26 03:35:12,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:35:12,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:35:12,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:35:12,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:35:12,505 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 6 states. [2020-10-26 03:35:13,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:35:13,070 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-10-26 03:35:13,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:35:13,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-26 03:35:13,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:35:13,072 INFO L225 Difference]: With dead ends: 124 [2020-10-26 03:35:13,072 INFO L226 Difference]: Without dead ends: 124 [2020-10-26 03:35:13,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:35:13,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-26 03:35:13,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 98. [2020-10-26 03:35:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-26 03:35:13,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-10-26 03:35:13,079 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 18 [2020-10-26 03:35:13,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:35:13,079 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-10-26 03:35:13,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:35:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-10-26 03:35:13,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 03:35:13,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:35:13,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:35:13,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-26 03:35:13,297 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:35:13,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:35:13,298 INFO L82 PathProgramCache]: Analyzing trace with hash 2130023317, now seen corresponding path program 1 times [2020-10-26 03:35:13,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:35:13,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386689324] [2020-10-26 03:35:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-26 03:35:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:35:13,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 03:35:13,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:35:13,455 INFO L384 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 [2020-10-26 03:35:13,455 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:13,461 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:13,462 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:13,462 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-26 03:35:13,495 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-26 03:35:13,496 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:13,512 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:13,519 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-26 03:35:13,519 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:13,530 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:13,532 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:13,532 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-26 03:35:13,567 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-26 03:35:13,568 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:13,585 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:13,590 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-10-26 03:35:13,591 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:13,597 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:13,597 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:13,598 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-26 03:35:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:13,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:35:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:13,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386689324] [2020-10-26 03:35:13,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:35:13,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-26 03:35:13,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874389436] [2020-10-26 03:35:13,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 03:35:13,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:35:13,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 03:35:13,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:35:13,832 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 10 states. [2020-10-26 03:35:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:35:15,243 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2020-10-26 03:35:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 03:35:15,244 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-26 03:35:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:35:15,245 INFO L225 Difference]: With dead ends: 123 [2020-10-26 03:35:15,245 INFO L226 Difference]: Without dead ends: 123 [2020-10-26 03:35:15,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-26 03:35:15,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-26 03:35:15,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 85. [2020-10-26 03:35:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-26 03:35:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-10-26 03:35:15,250 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 18 [2020-10-26 03:35:15,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:35:15,250 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-10-26 03:35:15,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 03:35:15,251 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-10-26 03:35:15,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 03:35:15,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:35:15,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:35:15,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-26 03:35:15,461 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:35:15,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:35:15,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1872584189, now seen corresponding path program 1 times [2020-10-26 03:35:15,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:35:15,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595203948] [2020-10-26 03:35:15,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-26 03:35:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:35:15,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 03:35:15,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:35:15,680 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-26 03:35:15,680 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:15,689 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:15,690 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:15,690 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-10-26 03:35:15,733 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-10-26 03:35:15,733 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 13 [2020-10-26 03:35:15,734 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:15,738 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:15,738 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:15,739 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-10-26 03:35:15,764 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-26 03:35:15,765 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:35:15,768 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:15,768 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:35:15,768 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-26 03:35:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:15,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:35:15,841 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:35:15,853 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:35:15,854 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:35:15,854 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:20 [2020-10-26 03:35:15,905 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 152 [2020-10-26 03:35:15,909 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-26 03:35:16,003 INFO L625 ElimStorePlain]: treesize reduction 107, result has 22.5 percent of original size [2020-10-26 03:35:16,004 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-26 03:35:16,005 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:24 [2020-10-26 03:35:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:35:16,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595203948] [2020-10-26 03:35:16,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:35:16,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2020-10-26 03:35:16,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312551174] [2020-10-26 03:35:16,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 03:35:16,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:35:16,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 03:35:16,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 03:35:16,017 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 11 states. [2020-10-26 03:35:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:35:16,841 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2020-10-26 03:35:16,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 03:35:16,845 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-10-26 03:35:16,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:35:16,846 INFO L225 Difference]: With dead ends: 159 [2020-10-26 03:35:16,846 INFO L226 Difference]: Without dead ends: 159 [2020-10-26 03:35:16,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-26 03:35:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-26 03:35:16,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 87. [2020-10-26 03:35:16,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-26 03:35:16,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2020-10-26 03:35:16,856 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 20 [2020-10-26 03:35:16,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:35:16,857 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2020-10-26 03:35:16,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 03:35:16,857 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2020-10-26 03:35:16,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 03:35:16,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:35:16,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:35:17,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-26 03:35:17,068 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:35:17,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:35:17,070 INFO L82 PathProgramCache]: Analyzing trace with hash -88346649, now seen corresponding path program 1 times [2020-10-26 03:35:17,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:35:17,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614026428] [2020-10-26 03:35:17,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-26 03:35:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:35:17,219 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:35:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:35:17,267 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:35:17,312 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-26 03:35:17,312 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:35:17,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-26 03:35:17,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:35:17 BoogieIcfgContainer [2020-10-26 03:35:17,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:35:17,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:35:17,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:35:17,550 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:35:17,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:35:03" (3/4) ... [2020-10-26 03:35:17,554 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 03:35:17,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:35:17,561 INFO L168 Benchmark]: Toolchain (without parser) took 16000.66 ms. Allocated memory was 39.8 MB in the beginning and 86.0 MB in the end (delta: 46.1 MB). Free memory was 25.4 MB in the beginning and 29.7 MB in the end (delta: -4.3 MB). Peak memory consumption was 40.6 MB. Max. memory is 16.1 GB. [2020-10-26 03:35:17,561 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 39.8 MB. Free memory is still 25.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:35:17,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.14 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 24.8 MB in the beginning and 30.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2020-10-26 03:35:17,564 INFO L168 Benchmark]: Boogie Preprocessor took 135.96 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 26.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 03:35:17,565 INFO L168 Benchmark]: RCFGBuilder took 1132.91 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 26.8 MB in the beginning and 32.2 MB in the end (delta: -5.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:35:17,565 INFO L168 Benchmark]: TraceAbstraction took 14054.87 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 31.8 MB in the beginning and 29.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:35:17,566 INFO L168 Benchmark]: Witness Printer took 3.84 ms. Allocated memory is still 86.0 MB. Free memory is still 29.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:35:17,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 39.8 MB. Free memory is still 25.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 656.14 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 24.8 MB in the beginning and 30.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 135.96 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 26.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1132.91 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 26.8 MB in the beginning and 32.2 MB in the end (delta: -5.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14054.87 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 31.8 MB in the beginning and 29.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.84 ms. Allocated memory is still 86.0 MB. Free memory is still 29.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, y=0] [L535] COND FALSE !(a == 0) VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, y=0] [L536] List t; [L537] List p = a; VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, y=0] [L555] p->n = 0 VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, y=0] [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, y=0] [L559] EXPR p->h VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-ext.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 121 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.9s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 467 SDtfs, 1123 SDslu, 1399 SDs, 0 SdLazy, 2199 SolverSat, 211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 201 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 360 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 240 ConstructedInterpolants, 2 QuantifiedInterpolants, 17364 SizeOfPredicates, 62 NumberOfNonLiveVariables, 740 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 16/16 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 Received shutdown request...