./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/list-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer --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 6ba4928d27614bbdf140b58cd6ad1ef338e79461 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer --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 6ba4928d27614bbdf140b58cd6ad1ef338e79461 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:55,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:55,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:55,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:55,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:55,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:55,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:55,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:55,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:55,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:55,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:55,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:55,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:55,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:55,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:55,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:55,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:55,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:55,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:55,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:55,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:55,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:55,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:55,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:55,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:55,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:55,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:55,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:55,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:55,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:55,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:55,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:55,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:55,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:55,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:55,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:55,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:55,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:55,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:55,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:55,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:55,985 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 02:57:56,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:56,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:56,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:56,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:56,028 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:56,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:56,029 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:56,029 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:57:56,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:56,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:56,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:56,031 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 02:57:56,032 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 02:57:56,032 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 02:57:56,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:56,032 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 02:57:56,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:56,033 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:56,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:56,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:56,034 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:56,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:56,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:56,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:56,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:56,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:56,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:56,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:56,036 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:/tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ba4928d27614bbdf140b58cd6ad1ef338e79461 [2020-11-28 02:57:56,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:56,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:56,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:56,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:56,379 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:56,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/../../sv-benchmarks/c/list-properties/list-1.i [2020-11-28 02:57:56,443 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/data/4d9f21205/62ffcc2da476415189386bab5a6d6820/FLAGcc74d603c [2020-11-28 02:57:57,068 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:57,070 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/sv-benchmarks/c/list-properties/list-1.i [2020-11-28 02:57:57,094 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/data/4d9f21205/62ffcc2da476415189386bab5a6d6820/FLAGcc74d603c [2020-11-28 02:57:57,312 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/data/4d9f21205/62ffcc2da476415189386bab5a6d6820 [2020-11-28 02:57:57,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:57,315 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 02:57:57,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:57,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:57,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:57,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d70046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57, skipping insertion in model container [2020-11-28 02:57:57,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:57,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:57,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:57,715 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:57,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:57,806 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:57,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57 WrapperNode [2020-11-28 02:57:57,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:57,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:57,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:57,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:57,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:57,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:57,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:57,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:57,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/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 [2020-11-28 02:57:57,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 02:57:57,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:57,935 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 02:57:57,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 02:57:57,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 02:57:57,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 02:57:57,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 02:57:57,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 02:57:57,936 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-28 02:57:57,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 02:57:57,936 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 02:57:57,936 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 02:57:57,936 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 02:57:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 02:57:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 02:57:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 02:57:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 02:57:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 02:57:57,938 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 02:57:57,938 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 02:57:57,938 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 02:57:57,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 02:57:57,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 02:57:57,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 02:57:57,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 02:57:57,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 02:57:57,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 02:57:57,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 02:57:57,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 02:57:57,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 02:57:57,939 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 02:57:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 02:57:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 02:57:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 02:57:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 02:57:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 02:57:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 02:57:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 02:57:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 02:57:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 02:57:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 02:57:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 02:57:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 02:57:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 02:57:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 02:57:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 02:57:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 02:57:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 02:57:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 02:57:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 02:57:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 02:57:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 02:57:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 02:57:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 02:57:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 02:57:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 02:57:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 02:57:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 02:57:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 02:57:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 02:57:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 02:57:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 02:57:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 02:57:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 02:57:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 02:57:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 02:57:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 02:57:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 02:57:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 02:57:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 02:57:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 02:57:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 02:57:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 02:57:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 02:57:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 02:57:57,947 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 02:57:57,947 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 02:57:57,947 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 02:57:57,947 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 02:57:57,947 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 02:57:57,947 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 02:57:57,948 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 02:57:57,948 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 02:57:57,948 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 02:57:57,948 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 02:57:57,948 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 02:57:57,948 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 02:57:57,948 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 02:57:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 02:57:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 02:57:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 02:57:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 02:57:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 02:57:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 02:57:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 02:57:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 02:57:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 02:57:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 02:57:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 02:57:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 02:57:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 02:57:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 02:57:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 02:57:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 02:57:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 02:57:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 02:57:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 02:57:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 02:57:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 02:57:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 02:57:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 02:57:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 02:57:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 02:57:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 02:57:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 02:57:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 02:57:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 02:57:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 02:57:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 02:57:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 02:57:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 02:57:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 02:57:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-28 02:57:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 02:57:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 02:57:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:57:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 02:57:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 02:57:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:57:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 02:57:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:57:58,450 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-28 02:57:58,781 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:58,782 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-28 02:57:58,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:58 BoogieIcfgContainer [2020-11-28 02:57:58,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:58,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:58,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:58,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:58,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:57" (1/3) ... [2020-11-28 02:57:58,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e1a889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:58, skipping insertion in model container [2020-11-28 02:57:58,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (2/3) ... [2020-11-28 02:57:58,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e1a889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:58, skipping insertion in model container [2020-11-28 02:57:58,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:58" (3/3) ... [2020-11-28 02:57:58,807 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2020-11-28 02:57:58,823 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:58,828 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-11-28 02:57:58,840 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-11-28 02:57:58,869 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:58,869 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 02:57:58,869 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:58,869 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:58,869 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:58,870 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:58,870 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:58,870 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:58,885 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-11-28 02:57:58,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:57:58,893 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:58,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:58,894 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:57:58,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:58,916 INFO L82 PathProgramCache]: Analyzing trace with hash -529419567, now seen corresponding path program 1 times [2020-11-28 02:57:58,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:58,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826540770] [2020-11-28 02:57:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:59,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:57:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:59,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826540770] [2020-11-28 02:57:59,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:59,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:59,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718036475] [2020-11-28 02:57:59,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:59,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:59,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:59,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:59,252 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 5 states. [2020-11-28 02:57:59,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:59,654 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-11-28 02:57:59,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:59,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 02:57:59,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:59,667 INFO L225 Difference]: With dead ends: 82 [2020-11-28 02:57:59,667 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 02:57:59,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:59,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 02:57:59,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-11-28 02:57:59,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-28 02:57:59,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-11-28 02:57:59,713 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 11 [2020-11-28 02:57:59,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:59,713 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-11-28 02:57:59,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:59,713 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-11-28 02:57:59,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:57:59,714 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:59,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:59,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:59,715 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:57:59,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:59,716 INFO L82 PathProgramCache]: Analyzing trace with hash -529419566, now seen corresponding path program 1 times [2020-11-28 02:57:59,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:59,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332124926] [2020-11-28 02:57:59,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:59,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:57:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:59,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332124926] [2020-11-28 02:57:59,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:59,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:59,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433570374] [2020-11-28 02:57:59,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:59,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:59,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:59,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:59,900 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 5 states. [2020-11-28 02:58:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:00,274 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-11-28 02:58:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:00,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 02:58:00,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:00,278 INFO L225 Difference]: With dead ends: 93 [2020-11-28 02:58:00,278 INFO L226 Difference]: Without dead ends: 93 [2020-11-28 02:58:00,279 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 [2020-11-28 02:58:00,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-28 02:58:00,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2020-11-28 02:58:00,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-28 02:58:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-11-28 02:58:00,293 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 11 [2020-11-28 02:58:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:00,294 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-11-28 02:58:00,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-11-28 02:58:00,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:58:00,295 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:00,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:00,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:58:00,295 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:00,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:00,296 INFO L82 PathProgramCache]: Analyzing trace with hash 745437086, now seen corresponding path program 1 times [2020-11-28 02:58:00,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:00,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206201640] [2020-11-28 02:58:00,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:00,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:00,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:00,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206201640] [2020-11-28 02:58:00,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:00,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 02:58:00,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075463531] [2020-11-28 02:58:00,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:00,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:00,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:00,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:00,548 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 7 states. [2020-11-28 02:58:01,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:01,040 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-11-28 02:58:01,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:58:01,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 02:58:01,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:01,042 INFO L225 Difference]: With dead ends: 119 [2020-11-28 02:58:01,042 INFO L226 Difference]: Without dead ends: 119 [2020-11-28 02:58:01,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-28 02:58:01,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 86. [2020-11-28 02:58:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-28 02:58:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-11-28 02:58:01,059 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 19 [2020-11-28 02:58:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:01,059 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-11-28 02:58:01,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-11-28 02:58:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:58:01,061 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:01,061 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:01,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:58:01,061 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:01,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:01,062 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276100, now seen corresponding path program 1 times [2020-11-28 02:58:01,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:01,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985548987] [2020-11-28 02:58:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:01,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:01,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985548987] [2020-11-28 02:58:01,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:01,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:58:01,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197088253] [2020-11-28 02:58:01,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:01,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:01,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:01,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:01,252 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 7 states. [2020-11-28 02:58:01,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:01,794 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-11-28 02:58:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:58:01,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 02:58:01,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:01,796 INFO L225 Difference]: With dead ends: 110 [2020-11-28 02:58:01,796 INFO L226 Difference]: Without dead ends: 110 [2020-11-28 02:58:01,796 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 [2020-11-28 02:58:01,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-28 02:58:01,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 89. [2020-11-28 02:58:01,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-28 02:58:01,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-11-28 02:58:01,804 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 19 [2020-11-28 02:58:01,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:01,805 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-11-28 02:58:01,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:01,805 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-11-28 02:58:01,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:58:01,806 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:01,806 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:01,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:58:01,807 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:01,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:01,807 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276101, now seen corresponding path program 1 times [2020-11-28 02:58:01,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:01,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901834836] [2020-11-28 02:58:01,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:02,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901834836] [2020-11-28 02:58:02,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:02,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:58:02,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736326097] [2020-11-28 02:58:02,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:02,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:02,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:02,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:02,003 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 7 states. [2020-11-28 02:58:02,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:02,543 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2020-11-28 02:58:02,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:58:02,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 02:58:02,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:02,545 INFO L225 Difference]: With dead ends: 111 [2020-11-28 02:58:02,545 INFO L226 Difference]: Without dead ends: 111 [2020-11-28 02:58:02,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:58:02,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-28 02:58:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80. [2020-11-28 02:58:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-28 02:58:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-11-28 02:58:02,552 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 19 [2020-11-28 02:58:02,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:02,553 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-11-28 02:58:02,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-11-28 02:58:02,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:58:02,554 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:02,554 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] [2020-11-28 02:58:02,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:58:02,555 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:02,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:02,555 INFO L82 PathProgramCache]: Analyzing trace with hash -942076661, now seen corresponding path program 1 times [2020-11-28 02:58:02,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:02,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753162427] [2020-11-28 02:58:02,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:02,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:02,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753162427] [2020-11-28 02:58:02,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:02,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 02:58:02,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682482308] [2020-11-28 02:58:02,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:02,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:02,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:02,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:02,692 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-11-28 02:58:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:03,007 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2020-11-28 02:58:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:03,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-28 02:58:03,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:03,008 INFO L225 Difference]: With dead ends: 107 [2020-11-28 02:58:03,008 INFO L226 Difference]: Without dead ends: 107 [2020-11-28 02:58:03,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:03,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-28 02:58:03,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2020-11-28 02:58:03,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-28 02:58:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-11-28 02:58:03,017 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 21 [2020-11-28 02:58:03,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:03,017 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-11-28 02:58:03,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:03,017 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-11-28 02:58:03,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:58:03,018 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:03,018 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:03,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:58:03,019 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:03,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:03,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890890, now seen corresponding path program 1 times [2020-11-28 02:58:03,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:03,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668589788] [2020-11-28 02:58:03,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:03,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:03,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668589788] [2020-11-28 02:58:03,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:03,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:58:03,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536036911] [2020-11-28 02:58:03,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:03,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:03,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:03,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:03,130 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2020-11-28 02:58:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:03,483 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-11-28 02:58:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:58:03,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-28 02:58:03,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:03,485 INFO L225 Difference]: With dead ends: 91 [2020-11-28 02:58:03,485 INFO L226 Difference]: Without dead ends: 91 [2020-11-28 02:58:03,486 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 [2020-11-28 02:58:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-28 02:58:03,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-11-28 02:58:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-28 02:58:03,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-11-28 02:58:03,492 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 21 [2020-11-28 02:58:03,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:03,492 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-11-28 02:58:03,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:03,492 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-11-28 02:58:03,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:58:03,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:03,494 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:03,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:58:03,494 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:03,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:03,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890889, now seen corresponding path program 1 times [2020-11-28 02:58:03,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:03,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012213163] [2020-11-28 02:58:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:03,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:03,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012213163] [2020-11-28 02:58:03,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:03,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:58:03,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045926316] [2020-11-28 02:58:03,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:03,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:03,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:03,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:03,630 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-11-28 02:58:04,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:04,075 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2020-11-28 02:58:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:58:04,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-28 02:58:04,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:04,076 INFO L225 Difference]: With dead ends: 88 [2020-11-28 02:58:04,076 INFO L226 Difference]: Without dead ends: 88 [2020-11-28 02:58:04,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:58:04,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-28 02:58:04,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 68. [2020-11-28 02:58:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-28 02:58:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-11-28 02:58:04,081 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 21 [2020-11-28 02:58:04,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:04,081 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-11-28 02:58:04,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-11-28 02:58:04,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 02:58:04,082 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:04,083 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] [2020-11-28 02:58:04,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:58:04,083 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:04,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:04,083 INFO L82 PathProgramCache]: Analyzing trace with hash 851943190, now seen corresponding path program 1 times [2020-11-28 02:58:04,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:04,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781492360] [2020-11-28 02:58:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:04,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:04,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:04,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781492360] [2020-11-28 02:58:04,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:04,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 02:58:04,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045727172] [2020-11-28 02:58:04,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:04,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:04,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:04,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:04,180 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 7 states. [2020-11-28 02:58:04,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:04,456 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-11-28 02:58:04,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:04,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-28 02:58:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:04,458 INFO L225 Difference]: With dead ends: 92 [2020-11-28 02:58:04,458 INFO L226 Difference]: Without dead ends: 92 [2020-11-28 02:58:04,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:04,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-28 02:58:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 70. [2020-11-28 02:58:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-28 02:58:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-11-28 02:58:04,461 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2020-11-28 02:58:04,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:04,461 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-11-28 02:58:04,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:04,461 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-11-28 02:58:04,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:58:04,462 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:04,462 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] [2020-11-28 02:58:04,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:58:04,463 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:04,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:04,463 INFO L82 PathProgramCache]: Analyzing trace with hash 858770483, now seen corresponding path program 1 times [2020-11-28 02:58:04,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:04,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2777730] [2020-11-28 02:58:04,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:04,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:04,487 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:04,514 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:04,514 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:58:04,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:58:04,526 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-28 02:58:04,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:04 BoogieIcfgContainer [2020-11-28 02:58:04,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:04,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:04,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:04,539 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:04,539 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:58" (3/4) ... [2020-11-28 02:58:04,542 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:58:04,542 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:04,544 INFO L168 Benchmark]: Toolchain (without parser) took 7228.11 ms. Allocated memory was 83.9 MB in the beginning and 125.8 MB in the end (delta: 41.9 MB). Free memory was 52.8 MB in the beginning and 53.4 MB in the end (delta: -652.4 kB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:04,545 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 83.9 MB. Free memory was 43.8 MB in the beginning and 43.7 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:04,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.43 ms. Allocated memory is still 83.9 MB. Free memory was 52.8 MB in the beginning and 49.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:04,546 INFO L168 Benchmark]: Boogie Preprocessor took 56.28 ms. Allocated memory is still 83.9 MB. Free memory was 49.2 MB in the beginning and 46.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:04,547 INFO L168 Benchmark]: RCFGBuilder took 922.54 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 46.3 MB in the beginning and 52.0 MB in the end (delta: -5.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:04,548 INFO L168 Benchmark]: TraceAbstraction took 5748.35 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 51.4 MB in the beginning and 54.5 MB in the end (delta: -3.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:04,548 INFO L168 Benchmark]: Witness Printer took 3.64 ms. Allocated memory is still 125.8 MB. Free memory was 54.5 MB in the beginning and 53.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:04,551 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 83.9 MB. Free memory was 43.8 MB in the beginning and 43.7 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 490.43 ms. Allocated memory is still 83.9 MB. Free memory was 52.8 MB in the beginning and 49.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.28 ms. Allocated memory is still 83.9 MB. Free memory was 49.2 MB in the beginning and 46.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 922.54 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 46.3 MB in the beginning and 52.0 MB in the end (delta: -5.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5748.35 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 51.4 MB in the beginning and 54.5 MB in the end (delta: -3.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.64 ms. Allocated memory is still 125.8 MB. Free memory was 54.5 MB in the beginning and 53.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L533] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L551] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L552] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 94 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.6s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 409 SDtfs, 677 SDslu, 911 SDs, 0 SdLazy, 1850 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred 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: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 178 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 14484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 12/12 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-a4ecdab [2020-11-28 02:58:07,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:07,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:07,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:07,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:07,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:07,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:07,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:07,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:07,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:07,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:07,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:07,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:07,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:07,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:07,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:07,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:07,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:07,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:07,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:07,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:07,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:07,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:07,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:07,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:07,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:07,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:07,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:07,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:07,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:07,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:07,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:07,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:07,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:07,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:07,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:07,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:07,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:07,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:07,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:07,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:07,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-28 02:58:07,201 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:07,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:07,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:07,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:07,205 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:07,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:07,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:07,206 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:58:07,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:07,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:07,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:07,208 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 02:58:07,209 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 02:58:07,209 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 02:58:07,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:07,210 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 02:58:07,210 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 02:58:07,210 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 02:58:07,210 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:07,211 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:07,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:07,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:07,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:07,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:07,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:07,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:07,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:07,213 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 02:58:07,213 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 02:58:07,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:07,214 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 02:58:07,214 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:/tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ba4928d27614bbdf140b58cd6ad1ef338e79461 [2020-11-28 02:58:07,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:07,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:07,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:07,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:07,655 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:07,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/../../sv-benchmarks/c/list-properties/list-1.i [2020-11-28 02:58:07,726 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/data/9805bab63/b55dfecc904c4a869301095f820e2e24/FLAG60e04ec43 [2020-11-28 02:58:08,353 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:08,361 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/sv-benchmarks/c/list-properties/list-1.i [2020-11-28 02:58:08,380 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/data/9805bab63/b55dfecc904c4a869301095f820e2e24/FLAG60e04ec43 [2020-11-28 02:58:08,639 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/data/9805bab63/b55dfecc904c4a869301095f820e2e24 [2020-11-28 02:58:08,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:08,645 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 02:58:08,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:08,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:08,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:08,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:08" (1/1) ... [2020-11-28 02:58:08,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9da3b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:08, skipping insertion in model container [2020-11-28 02:58:08,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:08" (1/1) ... [2020-11-28 02:58:08,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:08,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:09,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:09,134 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:09,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:09,253 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:09,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:09 WrapperNode [2020-11-28 02:58:09,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:09,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:09,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:09,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:09,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:09" (1/1) ... [2020-11-28 02:58:09,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:09" (1/1) ... [2020-11-28 02:58:09,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:09" (1/1) ... [2020-11-28 02:58:09,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:09" (1/1) ... [2020-11-28 02:58:09,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:09" (1/1) ... [2020-11-28 02:58:09,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:09" (1/1) ... [2020-11-28 02:58:09,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:09" (1/1) ... [2020-11-28 02:58:09,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:09,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:09,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:09,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:09,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/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 [2020-11-28 02:58:09,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 02:58:09,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:09,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-11-28 02:58:09,462 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 02:58:09,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 02:58:09,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 02:58:09,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 02:58:09,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 02:58:09,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 02:58:09,464 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-28 02:58:09,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 02:58:09,465 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 02:58:09,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 02:58:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 02:58:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 02:58:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 02:58:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 02:58:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 02:58:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 02:58:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 02:58:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 02:58:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 02:58:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 02:58:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 02:58:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 02:58:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 02:58:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 02:58:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 02:58:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 02:58:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 02:58:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 02:58:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 02:58:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 02:58:09,471 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 02:58:09,471 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 02:58:09,471 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 02:58:09,471 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 02:58:09,471 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 02:58:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 02:58:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 02:58:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 02:58:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 02:58:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 02:58:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 02:58:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 02:58:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 02:58:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 02:58:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 02:58:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 02:58:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 02:58:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 02:58:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 02:58:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 02:58:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 02:58:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 02:58:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 02:58:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 02:58:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 02:58:09,478 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 02:58:09,478 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 02:58:09,478 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 02:58:09,478 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 02:58:09,479 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 02:58:09,479 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 02:58:09,479 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 02:58:09,480 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 02:58:09,480 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 02:58:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 02:58:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 02:58:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 02:58:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 02:58:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 02:58:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 02:58:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 02:58:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 02:58:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 02:58:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 02:58:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 02:58:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 02:58:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 02:58:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 02:58:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 02:58:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 02:58:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 02:58:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 02:58:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 02:58:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 02:58:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 02:58:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 02:58:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 02:58:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 02:58:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 02:58:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 02:58:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 02:58:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 02:58:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 02:58:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 02:58:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 02:58:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 02:58:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 02:58:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 02:58:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 02:58:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 02:58:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 02:58:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 02:58:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 02:58:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 02:58:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 02:58:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 02:58:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 02:58:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 02:58:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 02:58:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 02:58:09,493 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 02:58:09,493 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 02:58:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 02:58:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 02:58:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 02:58:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 02:58:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 02:58:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 02:58:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 02:58:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 02:58:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-28 02:58:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 02:58:09,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 02:58:09,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 02:58:09,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 02:58:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 02:58:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 02:58:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 02:58:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 02:58:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-11-28 02:58:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-28 02:58:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-28 02:58:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:58:09,921 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-28 02:58:10,318 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:10,319 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-28 02:58:10,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:10 BoogieIcfgContainer [2020-11-28 02:58:10,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:10,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:10,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:10,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:10,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:08" (1/3) ... [2020-11-28 02:58:10,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640f3e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:10, skipping insertion in model container [2020-11-28 02:58:10,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:09" (2/3) ... [2020-11-28 02:58:10,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640f3e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:10, skipping insertion in model container [2020-11-28 02:58:10,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:10" (3/3) ... [2020-11-28 02:58:10,331 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2020-11-28 02:58:10,342 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:10,347 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-11-28 02:58:10,358 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-11-28 02:58:10,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:10,387 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 02:58:10,387 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:10,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:10,387 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:10,387 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:10,388 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:10,388 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:10,405 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 02:58:10,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:58:10,413 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:10,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:10,414 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:10,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:10,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1059061945, now seen corresponding path program 1 times [2020-11-28 02:58:10,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:10,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359240687] [2020-11-28 02:58:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/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 [2020-11-28 02:58:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:10,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:58:10,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:10,702 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 [2020-11-28 02:58:10,703 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:10,714 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:10,714 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:10,714 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 02:58:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:10,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:10,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359240687] [2020-11-28 02:58:10,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:10,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 02:58:10,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869691998] [2020-11-28 02:58:10,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:58:10,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:10,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:58:10,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:10,897 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2020-11-28 02:58:11,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:11,653 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2020-11-28 02:58:11,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:11,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 02:58:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:11,664 INFO L225 Difference]: With dead ends: 119 [2020-11-28 02:58:11,664 INFO L226 Difference]: Without dead ends: 108 [2020-11-28 02:58:11,666 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 [2020-11-28 02:58:11,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-28 02:58:11,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2020-11-28 02:58:11,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-28 02:58:11,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2020-11-28 02:58:11,705 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 10 [2020-11-28 02:58:11,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:11,706 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2020-11-28 02:58:11,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:58:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2020-11-28 02:58:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:58:11,707 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:11,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:11,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 02:58:11,927 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:11,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:11,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1059061944, now seen corresponding path program 1 times [2020-11-28 02:58:11,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:11,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373288245] [2020-11-28 02:58:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/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 [2020-11-28 02:58:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:12,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:58:12,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:12,113 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 [2020-11-28 02:58:12,114 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:12,116 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:12,117 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:12,117 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 02:58:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:12,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:12,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373288245] [2020-11-28 02:58:12,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:12,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 02:58:12,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077176651] [2020-11-28 02:58:12,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:12,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:12,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:12,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:12,153 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand 4 states. [2020-11-28 02:58:12,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:12,424 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-11-28 02:58:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:12,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 02:58:12,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:12,427 INFO L225 Difference]: With dead ends: 77 [2020-11-28 02:58:12,427 INFO L226 Difference]: Without dead ends: 77 [2020-11-28 02:58:12,428 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 [2020-11-28 02:58:12,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-28 02:58:12,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-28 02:58:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-28 02:58:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2020-11-28 02:58:12,436 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 10 [2020-11-28 02:58:12,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:12,436 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2020-11-28 02:58:12,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:12,437 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2020-11-28 02:58:12,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:58:12,438 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:12,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:12,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 02:58:12,658 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:12,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:12,658 INFO L82 PathProgramCache]: Analyzing trace with hash 318419033, now seen corresponding path program 1 times [2020-11-28 02:58:12,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:12,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242448643] [2020-11-28 02:58:12,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/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 [2020-11-28 02:58:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:12,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:58:12,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:12,890 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 [2020-11-28 02:58:12,890 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:12,898 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:12,898 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:12,898 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-11-28 02:58:12,938 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 [2020-11-28 02:58:12,939 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:12,942 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:12,943 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:12,943 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-11-28 02:58:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:12,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:13,030 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 16 treesize of output 12 [2020-11-28 02:58:13,034 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-28 02:58:13,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:13,043 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-28 02:58:13,043 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:7 [2020-11-28 02:58:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:13,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242448643] [2020-11-28 02:58:13,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:13,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-28 02:58:13,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256737973] [2020-11-28 02:58:13,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 02:58:13,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:13,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 02:58:13,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:13,052 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 9 states. [2020-11-28 02:58:13,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:13,920 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2020-11-28 02:58:13,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 02:58:13,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-11-28 02:58:13,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:13,923 INFO L225 Difference]: With dead ends: 150 [2020-11-28 02:58:13,923 INFO L226 Difference]: Without dead ends: 150 [2020-11-28 02:58:13,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-11-28 02:58:13,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-28 02:58:13,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 83. [2020-11-28 02:58:13,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-28 02:58:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-11-28 02:58:13,934 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 17 [2020-11-28 02:58:13,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:13,935 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-11-28 02:58:13,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 02:58:13,935 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-11-28 02:58:13,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:58:13,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:13,936 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:14,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 02:58:14,137 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:14,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:14,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1432575182, now seen corresponding path program 1 times [2020-11-28 02:58:14,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:14,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4669711] [2020-11-28 02:58:14,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/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 [2020-11-28 02:58:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:14,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:58:14,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:14,331 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 [2020-11-28 02:58:14,331 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:14,337 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:14,337 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:14,338 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 02:58:14,369 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 [2020-11-28 02:58:14,370 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:14,388 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:14,395 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 [2020-11-28 02:58:14,395 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:14,410 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:14,411 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:14,411 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-11-28 02:58:14,460 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 [2020-11-28 02:58:14,461 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:14,480 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:14,484 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 [2020-11-28 02:58:14,485 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:14,493 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:14,493 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:14,494 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-11-28 02:58:14,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:14,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:14,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:14,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4669711] [2020-11-28 02:58:14,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:14,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-28 02:58:14,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40159112] [2020-11-28 02:58:14,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 02:58:14,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:14,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 02:58:14,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:14,790 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 10 states. [2020-11-28 02:58:16,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:16,329 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2020-11-28 02:58:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 02:58:16,332 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-28 02:58:16,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:16,333 INFO L225 Difference]: With dead ends: 111 [2020-11-28 02:58:16,333 INFO L226 Difference]: Without dead ends: 111 [2020-11-28 02:58:16,334 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 [2020-11-28 02:58:16,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-28 02:58:16,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 83. [2020-11-28 02:58:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-28 02:58:16,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2020-11-28 02:58:16,341 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 17 [2020-11-28 02:58:16,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:16,342 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2020-11-28 02:58:16,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 02:58:16,342 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2020-11-28 02:58:16,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:58:16,343 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:16,343 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:16,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 02:58:16,555 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:16,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:16,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1432575183, now seen corresponding path program 1 times [2020-11-28 02:58:16,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:16,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590430918] [2020-11-28 02:58:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/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 [2020-11-28 02:58:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:16,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:58:16,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:16,762 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 [2020-11-28 02:58:16,762 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:16,770 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:16,771 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:16,771 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 02:58:16,814 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 [2020-11-28 02:58:16,814 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:16,837 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:16,838 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:16,839 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-11-28 02:58:16,857 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 [2020-11-28 02:58:16,858 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:16,863 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:16,863 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:16,863 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-11-28 02:58:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:16,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:16,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590430918] [2020-11-28 02:58:16,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:16,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 02:58:16,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299996643] [2020-11-28 02:58:16,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:58:16,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:16,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:58:16,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:16,921 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand 6 states. [2020-11-28 02:58:17,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:17,308 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2020-11-28 02:58:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:17,309 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-28 02:58:17,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:17,310 INFO L225 Difference]: With dead ends: 102 [2020-11-28 02:58:17,310 INFO L226 Difference]: Without dead ends: 102 [2020-11-28 02:58:17,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:17,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-28 02:58:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 81. [2020-11-28 02:58:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-28 02:58:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2020-11-28 02:58:17,315 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 17 [2020-11-28 02:58:17,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:17,315 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2020-11-28 02:58:17,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:58:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2020-11-28 02:58:17,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:58:17,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:17,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:17,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 02:58:17,517 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:17,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:17,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1962715062, now seen corresponding path program 1 times [2020-11-28 02:58:17,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:17,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19212039] [2020-11-28 02:58:17,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/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 [2020-11-28 02:58:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:17,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:58:17,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:17,702 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 [2020-11-28 02:58:17,703 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:17,705 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:17,705 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:17,705 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 02:58:17,725 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 [2020-11-28 02:58:17,725 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:17,734 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:17,735 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:17,735 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-11-28 02:58:17,752 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 [2020-11-28 02:58:17,753 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:17,754 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:17,755 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:17,755 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-11-28 02:58:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:17,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:17,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19212039] [2020-11-28 02:58:17,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:17,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 02:58:17,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480660116] [2020-11-28 02:58:17,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:58:17,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:17,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:58:17,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:17,802 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 6 states. [2020-11-28 02:58:18,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:18,281 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-11-28 02:58:18,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:18,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-28 02:58:18,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:18,283 INFO L225 Difference]: With dead ends: 100 [2020-11-28 02:58:18,283 INFO L226 Difference]: Without dead ends: 100 [2020-11-28 02:58:18,283 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 [2020-11-28 02:58:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-11-28 02:58:18,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2020-11-28 02:58:18,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-28 02:58:18,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-11-28 02:58:18,296 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 18 [2020-11-28 02:58:18,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:18,300 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-11-28 02:58:18,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:58:18,300 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-11-28 02:58:18,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:58:18,301 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:18,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:18,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 02:58:18,509 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:18,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:18,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1962715063, now seen corresponding path program 1 times [2020-11-28 02:58:18,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:18,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639099437] [2020-11-28 02:58:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/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 [2020-11-28 02:58:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:18,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:58:18,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:18,644 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 [2020-11-28 02:58:18,644 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:18,652 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:18,652 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:18,652 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 02:58:18,684 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 [2020-11-28 02:58:18,684 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:18,702 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:18,709 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 [2020-11-28 02:58:18,709 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:18,725 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:18,726 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:18,726 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-11-28 02:58:18,751 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 [2020-11-28 02:58:18,752 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:18,761 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:18,764 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 21 treesize of output 9 [2020-11-28 02:58:18,764 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:18,771 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:18,772 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:18,772 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-11-28 02:58:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:18,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:19,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639099437] [2020-11-28 02:58:19,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:19,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-28 02:58:19,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393150403] [2020-11-28 02:58:19,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 02:58:19,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:19,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 02:58:19,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:19,063 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 10 states. [2020-11-28 02:58:20,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:20,405 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2020-11-28 02:58:20,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 02:58:20,407 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-28 02:58:20,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:20,407 INFO L225 Difference]: With dead ends: 98 [2020-11-28 02:58:20,408 INFO L226 Difference]: Without dead ends: 98 [2020-11-28 02:58:20,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-11-28 02:58:20,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-28 02:58:20,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 67. [2020-11-28 02:58:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-28 02:58:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-11-28 02:58:20,414 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 18 [2020-11-28 02:58:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:20,414 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-11-28 02:58:20,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 02:58:20,414 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-11-28 02:58:20,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:58:20,415 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:20,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:20,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 02:58:20,627 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:20,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:20,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1010435462, now seen corresponding path program 1 times [2020-11-28 02:58:20,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:20,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239530510] [2020-11-28 02:58:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/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 [2020-11-28 02:58:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:20,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:58:20,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:20,787 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 [2020-11-28 02:58:20,788 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:20,790 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:20,790 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:20,791 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-11-28 02:58:20,818 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 [2020-11-28 02:58:20,819 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:20,821 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:20,821 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:20,821 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-11-28 02:58:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:20,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:20,904 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 18 treesize of output 14 [2020-11-28 02:58:20,906 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-28 02:58:20,913 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:20,913 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-28 02:58:20,913 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:7 [2020-11-28 02:58:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:20,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239530510] [2020-11-28 02:58:20,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:20,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-28 02:58:20,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080188840] [2020-11-28 02:58:20,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 02:58:20,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:20,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 02:58:20,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:20,923 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 9 states. [2020-11-28 02:58:21,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:21,542 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2020-11-28 02:58:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 02:58:21,543 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-11-28 02:58:21,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:21,545 INFO L225 Difference]: With dead ends: 135 [2020-11-28 02:58:21,545 INFO L226 Difference]: Without dead ends: 135 [2020-11-28 02:58:21,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-11-28 02:58:21,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-28 02:58:21,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 85. [2020-11-28 02:58:21,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-28 02:58:21,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-11-28 02:58:21,556 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 19 [2020-11-28 02:58:21,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:21,557 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-11-28 02:58:21,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 02:58:21,557 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-11-28 02:58:21,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 02:58:21,558 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:21,558 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] [2020-11-28 02:58:21,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 02:58:21,772 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 02:58:21,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:21,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1257104172, now seen corresponding path program 1 times [2020-11-28 02:58:21,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:21,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60316778] [2020-11-28 02:58:21,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5ca6bb1-4264-433b-8139-c032c6fb4c64/bin/uautomizer/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 [2020-11-28 02:58:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:21,957 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:21,999 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:22,044 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 02:58:22,044 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:58:22,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-28 02:58:22,257 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-28 02:58:22,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:22 BoogieIcfgContainer [2020-11-28 02:58:22,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:22,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:22,281 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:22,282 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:22,282 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:10" (3/4) ... [2020-11-28 02:58:22,286 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:58:22,286 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:22,287 INFO L168 Benchmark]: Toolchain (without parser) took 13642.06 ms. Allocated memory was 58.7 MB in the beginning and 125.8 MB in the end (delta: 67.1 MB). Free memory was 35.5 MB in the beginning and 80.3 MB in the end (delta: -44.8 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:22,289 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 58.7 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:22,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.58 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 28.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:22,291 INFO L168 Benchmark]: Boogie Preprocessor took 120.96 ms. Allocated memory is still 58.7 MB. Free memory was 28.4 MB in the beginning and 25.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:22,295 INFO L168 Benchmark]: RCFGBuilder took 944.00 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 25.3 MB in the beginning and 44.1 MB in the end (delta: -18.9 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:22,295 INFO L168 Benchmark]: TraceAbstraction took 11954.41 ms. Allocated memory was 71.3 MB in the beginning and 125.8 MB in the end (delta: 54.5 MB). Free memory was 43.7 MB in the beginning and 81.3 MB in the end (delta: -37.6 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:22,297 INFO L168 Benchmark]: Witness Printer took 4.78 ms. Allocated memory is still 125.8 MB. Free memory was 81.3 MB in the beginning and 80.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:22,299 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 58.7 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 606.58 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 28.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 120.96 ms. Allocated memory is still 58.7 MB. Free memory was 28.4 MB in the beginning and 25.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 944.00 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 25.3 MB in the beginning and 44.1 MB in the end (delta: -18.9 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11954.41 ms. Allocated memory was 71.3 MB in the beginning and 125.8 MB in the end (delta: 54.5 MB). Free memory was 43.7 MB in the beginning and 81.3 MB in the end (delta: -37.6 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.78 ms. Allocated memory is still 125.8 MB. Free memory was 81.3 MB in the beginning and 80.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L533] COND FALSE !(a == 0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L534] List t; [L535] List p = a; VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L551] p = a VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L552] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 98 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.8s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 362 SDtfs, 858 SDslu, 1153 SDs, 0 SdLazy, 1460 SolverSat, 160 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 242 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 15614 SizeOfPredicates, 62 NumberOfNonLiveVariables, 688 ConjunctsInSsa, 59 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...