./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0234-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0234-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/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 958c5ae7f5e02f5130842f7eda9c8940c51fc3e7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 07:15:20,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 07:15:20,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 07:15:20,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 07:15:20,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 07:15:20,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 07:15:20,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 07:15:20,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 07:15:20,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 07:15:20,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 07:15:20,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 07:15:20,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 07:15:20,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 07:15:20,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 07:15:20,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 07:15:20,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 07:15:20,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 07:15:20,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 07:15:20,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 07:15:20,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 07:15:20,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 07:15:20,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 07:15:20,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 07:15:20,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 07:15:20,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 07:15:20,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 07:15:20,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 07:15:20,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 07:15:20,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 07:15:20,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 07:15:20,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 07:15:20,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 07:15:20,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 07:15:20,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 07:15:20,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 07:15:20,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 07:15:20,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 07:15:20,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 07:15:20,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 07:15:20,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 07:15:20,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 07:15:20,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 07:15:20,202 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 07:15:20,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 07:15:20,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 07:15:20,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 07:15:20,218 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 07:15:20,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 07:15:20,218 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 07:15:20,219 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 07:15:20,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 07:15:20,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 07:15:20,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 07:15:20,220 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 07:15:20,220 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 07:15:20,220 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 07:15:20,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 07:15:20,221 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 07:15:20,221 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 07:15:20,221 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 07:15:20,222 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 07:15:20,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 07:15:20,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 07:15:20,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 07:15:20,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 07:15:20,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 07:15:20,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 07:15:20,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 07:15:20,224 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 07:15:20,224 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 07:15:20,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 07:15:20,225 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/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 -> 958c5ae7f5e02f5130842f7eda9c8940c51fc3e7 [2019-11-20 07:15:20,415 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 07:15:20,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 07:15:20,433 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 07:15:20,435 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 07:15:20,435 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 07:15:20,436 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/../../sv-benchmarks/c/memsafety/test-0234-2.i [2019-11-20 07:15:20,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/data/5b7ffab90/1d883b92cb534ce5a7081f138fb061d8/FLAGfc1e4ae19 [2019-11-20 07:15:21,055 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 07:15:21,061 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/sv-benchmarks/c/memsafety/test-0234-2.i [2019-11-20 07:15:21,090 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/data/5b7ffab90/1d883b92cb534ce5a7081f138fb061d8/FLAGfc1e4ae19 [2019-11-20 07:15:21,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/data/5b7ffab90/1d883b92cb534ce5a7081f138fb061d8 [2019-11-20 07:15:21,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 07:15:21,313 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 07:15:21,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 07:15:21,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 07:15:21,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 07:15:21,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:15:21" (1/1) ... [2019-11-20 07:15:21,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3409c829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:21, skipping insertion in model container [2019-11-20 07:15:21,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:15:21" (1/1) ... [2019-11-20 07:15:21,332 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 07:15:21,393 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 07:15:21,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 07:15:21,967 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 07:15:22,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 07:15:22,197 INFO L192 MainTranslator]: Completed translation [2019-11-20 07:15:22,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:22 WrapperNode [2019-11-20 07:15:22,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 07:15:22,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 07:15:22,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 07:15:22,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 07:15:22,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:22" (1/1) ... [2019-11-20 07:15:22,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:22" (1/1) ... [2019-11-20 07:15:22,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:22" (1/1) ... [2019-11-20 07:15:22,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:22" (1/1) ... [2019-11-20 07:15:22,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:22" (1/1) ... [2019-11-20 07:15:22,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:22" (1/1) ... [2019-11-20 07:15:22,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:22" (1/1) ... [2019-11-20 07:15:22,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 07:15:22,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 07:15:22,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 07:15:22,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 07:15:22,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/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 [2019-11-20 07:15:22,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 07:15:22,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 07:15:22,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 07:15:22,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 07:15:22,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 07:15:22,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 07:15:22,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 07:15:22,486 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2019-11-20 07:15:22,487 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2019-11-20 07:15:22,488 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_insert [2019-11-20 07:15:22,488 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_insert [2019-11-20 07:15:22,488 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2019-11-20 07:15:22,488 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2019-11-20 07:15:22,489 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_insert [2019-11-20 07:15:22,489 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_destroy [2019-11-20 07:15:22,490 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_destroy [2019-11-20 07:15:22,490 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2019-11-20 07:15:22,490 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_destroy [2019-11-20 07:15:22,491 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2019-11-20 07:15:22,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 07:15:22,491 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-20 07:15:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 07:15:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 07:15:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 07:15:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 07:15:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 07:15:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 07:15:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 07:15:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 07:15:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 07:15:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 07:15:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 07:15:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 07:15:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 07:15:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 07:15:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 07:15:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 07:15:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 07:15:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 07:15:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 07:15:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 07:15:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 07:15:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 07:15:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 07:15:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 07:15:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 07:15:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 07:15:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 07:15:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 07:15:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 07:15:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 07:15:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 07:15:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 07:15:22,501 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 07:15:22,501 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 07:15:22,501 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 07:15:22,501 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 07:15:22,502 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 07:15:22,502 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 07:15:22,502 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 07:15:22,502 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 07:15:22,502 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 07:15:22,503 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 07:15:22,503 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 07:15:22,503 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 07:15:22,503 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 07:15:22,504 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 07:15:22,505 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 07:15:22,505 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 07:15:22,505 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 07:15:22,505 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 07:15:22,506 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 07:15:22,506 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 07:15:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 07:15:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 07:15:22,508 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 07:15:22,508 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 07:15:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 07:15:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 07:15:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 07:15:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 07:15:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 07:15:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 07:15:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 07:15:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 07:15:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 07:15:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 07:15:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 07:15:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 07:15:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 07:15:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 07:15:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 07:15:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 07:15:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 07:15:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 07:15:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 07:15:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 07:15:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 07:15:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 07:15:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 07:15:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 07:15:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 07:15:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 07:15:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 07:15:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 07:15:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 07:15:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 07:15:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 07:15:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 07:15:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 07:15:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 07:15:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 07:15:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 07:15:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 07:15:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 07:15:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 07:15:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 07:15:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 07:15:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 07:15:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 07:15:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 07:15:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 07:15:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 07:15:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 07:15:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 07:15:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 07:15:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 07:15:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 07:15:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 07:15:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-20 07:15:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2019-11-20 07:15:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2019-11-20 07:15:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-20 07:15:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2019-11-20 07:15:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2019-11-20 07:15:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2019-11-20 07:15:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2019-11-20 07:15:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2019-11-20 07:15:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2019-11-20 07:15:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2019-11-20 07:15:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2019-11-20 07:15:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2019-11-20 07:15:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2019-11-20 07:15:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2019-11-20 07:15:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2019-11-20 07:15:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2019-11-20 07:15:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2019-11-20 07:15:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2019-11-20 07:15:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2019-11-20 07:15:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2019-11-20 07:15:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2019-11-20 07:15:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2019-11-20 07:15:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2019-11-20 07:15:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2019-11-20 07:15:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2019-11-20 07:15:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2019-11-20 07:15:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-11-20 07:15:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2019-11-20 07:15:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2019-11-20 07:15:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2019-11-20 07:15:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2019-11-20 07:15:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2019-11-20 07:15:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2019-11-20 07:15:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2019-11-20 07:15:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure index [2019-11-20 07:15:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2019-11-20 07:15:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2019-11-20 07:15:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2019-11-20 07:15:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2019-11-20 07:15:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2019-11-20 07:15:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2019-11-20 07:15:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2019-11-20 07:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2019-11-20 07:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2019-11-20 07:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2019-11-20 07:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2019-11-20 07:15:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2019-11-20 07:15:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2019-11-20 07:15:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2019-11-20 07:15:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2019-11-20 07:15:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2019-11-20 07:15:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 07:15:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-20 07:15:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 07:15:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2019-11-20 07:15:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure l4_insert [2019-11-20 07:15:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 07:15:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 07:15:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure l3_insert [2019-11-20 07:15:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2019-11-20 07:15:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2019-11-20 07:15:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure l0_insert [2019-11-20 07:15:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure l4_destroy [2019-11-20 07:15:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 07:15:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure l3_destroy [2019-11-20 07:15:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2019-11-20 07:15:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure l1_destroy [2019-11-20 07:15:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2019-11-20 07:15:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 07:15:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 07:15:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 07:15:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 07:15:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 07:15:23,438 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 07:15:24,056 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 07:15:24,057 INFO L285 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-20 07:15:24,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:15:24 BoogieIcfgContainer [2019-11-20 07:15:24,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 07:15:24,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 07:15:24,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 07:15:24,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 07:15:24,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:15:21" (1/3) ... [2019-11-20 07:15:24,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3268ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:15:24, skipping insertion in model container [2019-11-20 07:15:24,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:22" (2/3) ... [2019-11-20 07:15:24,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3268ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:15:24, skipping insertion in model container [2019-11-20 07:15:24,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:15:24" (3/3) ... [2019-11-20 07:15:24,068 INFO L109 eAbstractionObserver]: Analyzing ICFG test-0234-2.i [2019-11-20 07:15:24,079 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 07:15:24,088 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 70 error locations. [2019-11-20 07:15:24,101 INFO L249 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2019-11-20 07:15:24,126 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 07:15:24,126 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 07:15:24,127 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 07:15:24,127 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 07:15:24,127 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 07:15:24,127 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 07:15:24,127 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 07:15:24,127 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 07:15:24,166 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states. [2019-11-20 07:15:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 07:15:24,179 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:15:24,180 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:15:24,181 INFO L410 AbstractCegarLoop]: === Iteration 1 === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr3REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l0_insertErr2REQUIRES_VIOLATION, l0_insertErr3REQUIRES_VIOLATION, l0_insertErr4REQUIRES_VIOLATION, l0_insertErr5REQUIRES_VIOLATION, l0_insertErr0REQUIRES_VIOLATION, l0_insertErr1REQUIRES_VIOLATION, l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, l4_destroyErr1REQUIRES_VIOLATION, l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, l4_destroyErr0REQUIRES_VIOLATION, l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l2_insertErr4REQUIRES_VIOLATION, l2_insertErr2REQUIRES_VIOLATION, l2_insertErr3REQUIRES_VIOLATION, l2_insertErr1REQUIRES_VIOLATION, l2_insertErr5REQUIRES_VIOLATION, l2_insertErr0REQUIRES_VIOLATION, l1_destroyErr3REQUIRES_VIOLATION, l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l1_destroyErr2REQUIRES_VIOLATION, l1_destroyErr0REQUIRES_VIOLATION, l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l1_destroyErr1REQUIRES_VIOLATION, l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l3_insertErr4REQUIRES_VIOLATION, l3_insertErr2REQUIRES_VIOLATION, l3_insertErr3REQUIRES_VIOLATION, l3_insertErr1REQUIRES_VIOLATION, l3_insertErr5REQUIRES_VIOLATION, l3_insertErr0REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr4REQUIRES_VIOLATION, l1_insertErr0REQUIRES_VIOLATION, l1_insertErr5REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, calloc_modelErr0REQUIRES_VIOLATION, calloc_modelErr1REQUIRES_VIOLATION, l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr3REQUIRES_VIOLATION, l0_destroyErr2REQUIRES_VIOLATION, l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1REQUIRES_VIOLATION, l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr0REQUIRES_VIOLATION, l4_insertErr4REQUIRES_VIOLATION, l4_insertErr3REQUIRES_VIOLATION, l4_insertErr2REQUIRES_VIOLATION, l4_insertErr7REQUIRES_VIOLATION, l4_insertErr1REQUIRES_VIOLATION, l4_insertErr6REQUIRES_VIOLATION, l4_insertErr0REQUIRES_VIOLATION, l4_insertErr5REQUIRES_VIOLATION, l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr1REQUIRES_VIOLATION, l2_destroyErr0REQUIRES_VIOLATION, l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr3REQUIRES_VIOLATION, l2_destroyErr2REQUIRES_VIOLATION]=== [2019-11-20 07:15:24,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:15:24,188 INFO L82 PathProgramCache]: Analyzing trace with hash -580682612, now seen corresponding path program 1 times [2019-11-20 07:15:24,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:15:24,202 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [36020934] [2019-11-20 07:15:24,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:15:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:15:24,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 07:15:24,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:15:24,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:15:24,596 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:15:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:15:24,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [36020934] [2019-11-20 07:15:24,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:15:24,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 07:15:24,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430695051] [2019-11-20 07:15:24,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 07:15:24,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:15:24,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 07:15:24,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 07:15:24,651 INFO L87 Difference]: Start difference. First operand 213 states. Second operand 2 states. [2019-11-20 07:15:24,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:15:24,720 INFO L93 Difference]: Finished difference Result 213 states and 228 transitions. [2019-11-20 07:15:24,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 07:15:24,726 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-20 07:15:24,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:15:24,758 INFO L225 Difference]: With dead ends: 213 [2019-11-20 07:15:24,759 INFO L226 Difference]: Without dead ends: 210 [2019-11-20 07:15:24,761 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 07:15:24,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2019-11-20 07:15:24,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2019-11-20 07:15:24,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2019-11-20 07:15:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 225 transitions. [2019-11-20 07:15:24,871 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 225 transitions. Word has length 7 [2019-11-20 07:15:24,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:15:24,872 INFO L462 AbstractCegarLoop]: Abstraction has 210 states and 225 transitions. [2019-11-20 07:15:24,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 07:15:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 225 transitions. [2019-11-20 07:15:24,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 07:15:24,877 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:15:24,877 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:15:25,080 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:15:25,082 INFO L410 AbstractCegarLoop]: === Iteration 2 === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr3REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l0_insertErr2REQUIRES_VIOLATION, l0_insertErr3REQUIRES_VIOLATION, l0_insertErr4REQUIRES_VIOLATION, l0_insertErr5REQUIRES_VIOLATION, l0_insertErr0REQUIRES_VIOLATION, l0_insertErr1REQUIRES_VIOLATION, l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, l4_destroyErr1REQUIRES_VIOLATION, l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, l4_destroyErr0REQUIRES_VIOLATION, l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l2_insertErr4REQUIRES_VIOLATION, l2_insertErr2REQUIRES_VIOLATION, l2_insertErr3REQUIRES_VIOLATION, l2_insertErr1REQUIRES_VIOLATION, l2_insertErr5REQUIRES_VIOLATION, l2_insertErr0REQUIRES_VIOLATION, l1_destroyErr3REQUIRES_VIOLATION, l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l1_destroyErr2REQUIRES_VIOLATION, l1_destroyErr0REQUIRES_VIOLATION, l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l1_destroyErr1REQUIRES_VIOLATION, l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l3_insertErr4REQUIRES_VIOLATION, l3_insertErr2REQUIRES_VIOLATION, l3_insertErr3REQUIRES_VIOLATION, l3_insertErr1REQUIRES_VIOLATION, l3_insertErr5REQUIRES_VIOLATION, l3_insertErr0REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr4REQUIRES_VIOLATION, l1_insertErr0REQUIRES_VIOLATION, l1_insertErr5REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, calloc_modelErr0REQUIRES_VIOLATION, calloc_modelErr1REQUIRES_VIOLATION, l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr3REQUIRES_VIOLATION, l0_destroyErr2REQUIRES_VIOLATION, l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1REQUIRES_VIOLATION, l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr0REQUIRES_VIOLATION, l4_insertErr4REQUIRES_VIOLATION, l4_insertErr3REQUIRES_VIOLATION, l4_insertErr2REQUIRES_VIOLATION, l4_insertErr7REQUIRES_VIOLATION, l4_insertErr1REQUIRES_VIOLATION, l4_insertErr6REQUIRES_VIOLATION, l4_insertErr0REQUIRES_VIOLATION, l4_insertErr5REQUIRES_VIOLATION, l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr1REQUIRES_VIOLATION, l2_destroyErr0REQUIRES_VIOLATION, l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr3REQUIRES_VIOLATION, l2_destroyErr2REQUIRES_VIOLATION]=== [2019-11-20 07:15:25,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:15:25,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1360084009, now seen corresponding path program 1 times [2019-11-20 07:15:25,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:15:25,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1283891474] [2019-11-20 07:15:25,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:15:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:15:25,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 07:15:25,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:15:25,509 INFO L377 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 [2019-11-20 07:15:25,510 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:15:25,515 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:15:25,515 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:15:25,515 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 07:15:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:15:25,527 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:15:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:15:25,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1283891474] [2019-11-20 07:15:25,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:15:25,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 07:15:25,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135528845] [2019-11-20 07:15:25,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 07:15:25,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:15:25,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 07:15:25,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 07:15:25,542 INFO L87 Difference]: Start difference. First operand 210 states and 225 transitions. Second operand 3 states. [2019-11-20 07:15:25,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:15:25,914 INFO L93 Difference]: Finished difference Result 209 states and 224 transitions. [2019-11-20 07:15:25,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 07:15:25,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-20 07:15:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:15:25,917 INFO L225 Difference]: With dead ends: 209 [2019-11-20 07:15:25,917 INFO L226 Difference]: Without dead ends: 209 [2019-11-20 07:15:25,918 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 07:15:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2019-11-20 07:15:25,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2019-11-20 07:15:25,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2019-11-20 07:15:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 224 transitions. [2019-11-20 07:15:25,945 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 224 transitions. Word has length 12 [2019-11-20 07:15:25,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:15:25,945 INFO L462 AbstractCegarLoop]: Abstraction has 209 states and 224 transitions. [2019-11-20 07:15:25,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 07:15:25,946 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 224 transitions. [2019-11-20 07:15:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 07:15:25,946 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:15:25,947 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:15:26,152 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:15:26,153 INFO L410 AbstractCegarLoop]: === Iteration 3 === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr3REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l0_insertErr2REQUIRES_VIOLATION, l0_insertErr3REQUIRES_VIOLATION, l0_insertErr4REQUIRES_VIOLATION, l0_insertErr5REQUIRES_VIOLATION, l0_insertErr0REQUIRES_VIOLATION, l0_insertErr1REQUIRES_VIOLATION, l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, l4_destroyErr1REQUIRES_VIOLATION, l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, l4_destroyErr0REQUIRES_VIOLATION, l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l2_insertErr4REQUIRES_VIOLATION, l2_insertErr2REQUIRES_VIOLATION, l2_insertErr3REQUIRES_VIOLATION, l2_insertErr1REQUIRES_VIOLATION, l2_insertErr5REQUIRES_VIOLATION, l2_insertErr0REQUIRES_VIOLATION, l1_destroyErr3REQUIRES_VIOLATION, l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l1_destroyErr2REQUIRES_VIOLATION, l1_destroyErr0REQUIRES_VIOLATION, l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l1_destroyErr1REQUIRES_VIOLATION, l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l3_insertErr4REQUIRES_VIOLATION, l3_insertErr2REQUIRES_VIOLATION, l3_insertErr3REQUIRES_VIOLATION, l3_insertErr1REQUIRES_VIOLATION, l3_insertErr5REQUIRES_VIOLATION, l3_insertErr0REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr4REQUIRES_VIOLATION, l1_insertErr0REQUIRES_VIOLATION, l1_insertErr5REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, calloc_modelErr0REQUIRES_VIOLATION, calloc_modelErr1REQUIRES_VIOLATION, l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr3REQUIRES_VIOLATION, l0_destroyErr2REQUIRES_VIOLATION, l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1REQUIRES_VIOLATION, l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr0REQUIRES_VIOLATION, l4_insertErr4REQUIRES_VIOLATION, l4_insertErr3REQUIRES_VIOLATION, l4_insertErr2REQUIRES_VIOLATION, l4_insertErr7REQUIRES_VIOLATION, l4_insertErr1REQUIRES_VIOLATION, l4_insertErr6REQUIRES_VIOLATION, l4_insertErr0REQUIRES_VIOLATION, l4_insertErr5REQUIRES_VIOLATION, l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr1REQUIRES_VIOLATION, l2_destroyErr0REQUIRES_VIOLATION, l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr3REQUIRES_VIOLATION, l2_destroyErr2REQUIRES_VIOLATION]=== [2019-11-20 07:15:26,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:15:26,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1360084010, now seen corresponding path program 1 times [2019-11-20 07:15:26,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:15:26,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [780326227] [2019-11-20 07:15:26,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:15:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:15:26,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 07:15:26,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:15:26,613 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2019-11-20 07:15:26,613 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:15:26,643 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:15:26,643 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:15:26,644 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2019-11-20 07:15:26,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:15:26,723 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:15:27,008 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-11-20 07:15:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:15:27,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [780326227] [2019-11-20 07:15:27,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:15:27,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-20 07:15:27,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812708039] [2019-11-20 07:15:27,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 07:15:27,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:15:27,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 07:15:27,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-20 07:15:27,364 INFO L87 Difference]: Start difference. First operand 209 states and 224 transitions. Second operand 10 states. [2019-11-20 07:15:28,669 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-11-20 07:15:31,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:15:31,159 INFO L93 Difference]: Finished difference Result 219 states and 234 transitions. [2019-11-20 07:15:31,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 07:15:31,163 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2019-11-20 07:15:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:15:31,165 INFO L225 Difference]: With dead ends: 219 [2019-11-20 07:15:31,165 INFO L226 Difference]: Without dead ends: 219 [2019-11-20 07:15:31,165 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-20 07:15:31,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2019-11-20 07:15:31,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2019-11-20 07:15:31,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2019-11-20 07:15:31,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2019-11-20 07:15:31,183 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 12 [2019-11-20 07:15:31,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:15:31,183 INFO L462 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2019-11-20 07:15:31,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 07:15:31,183 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2019-11-20 07:15:31,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-20 07:15:31,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:15:31,191 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:15:31,395 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:15:31,395 INFO L410 AbstractCegarLoop]: === Iteration 4 === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr3REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l0_insertErr2REQUIRES_VIOLATION, l0_insertErr3REQUIRES_VIOLATION, l0_insertErr4REQUIRES_VIOLATION, l0_insertErr5REQUIRES_VIOLATION, l0_insertErr0REQUIRES_VIOLATION, l0_insertErr1REQUIRES_VIOLATION, l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, l4_destroyErr1REQUIRES_VIOLATION, l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, l4_destroyErr0REQUIRES_VIOLATION, l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l2_insertErr4REQUIRES_VIOLATION, l2_insertErr2REQUIRES_VIOLATION, l2_insertErr3REQUIRES_VIOLATION, l2_insertErr1REQUIRES_VIOLATION, l2_insertErr5REQUIRES_VIOLATION, l2_insertErr0REQUIRES_VIOLATION, l1_destroyErr3REQUIRES_VIOLATION, l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l1_destroyErr2REQUIRES_VIOLATION, l1_destroyErr0REQUIRES_VIOLATION, l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l1_destroyErr1REQUIRES_VIOLATION, l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l3_insertErr4REQUIRES_VIOLATION, l3_insertErr2REQUIRES_VIOLATION, l3_insertErr3REQUIRES_VIOLATION, l3_insertErr1REQUIRES_VIOLATION, l3_insertErr5REQUIRES_VIOLATION, l3_insertErr0REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr4REQUIRES_VIOLATION, l1_insertErr0REQUIRES_VIOLATION, l1_insertErr5REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, calloc_modelErr0REQUIRES_VIOLATION, calloc_modelErr1REQUIRES_VIOLATION, l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr3REQUIRES_VIOLATION, l0_destroyErr2REQUIRES_VIOLATION, l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1REQUIRES_VIOLATION, l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr0REQUIRES_VIOLATION, l4_insertErr4REQUIRES_VIOLATION, l4_insertErr3REQUIRES_VIOLATION, l4_insertErr2REQUIRES_VIOLATION, l4_insertErr7REQUIRES_VIOLATION, l4_insertErr1REQUIRES_VIOLATION, l4_insertErr6REQUIRES_VIOLATION, l4_insertErr0REQUIRES_VIOLATION, l4_insertErr5REQUIRES_VIOLATION, l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr1REQUIRES_VIOLATION, l2_destroyErr0REQUIRES_VIOLATION, l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr3REQUIRES_VIOLATION, l2_destroyErr2REQUIRES_VIOLATION]=== [2019-11-20 07:15:31,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:15:31,396 INFO L82 PathProgramCache]: Analyzing trace with hash -206408840, now seen corresponding path program 1 times [2019-11-20 07:15:31,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:15:31,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [638926759] [2019-11-20 07:15:31,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:15:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:15:32,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 07:15:32,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:15:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2019-11-20 07:15:32,518 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:15:33,426 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-11-20 07:15:34,341 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:15:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-11-20 07:15:34,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [638926759] [2019-11-20 07:15:34,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 07:15:34,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2019-11-20 07:15:34,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124029373] [2019-11-20 07:15:34,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 07:15:34,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:15:34,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 07:15:34,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-20 07:15:34,676 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand 8 states. [2019-11-20 07:15:35,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:15:35,369 INFO L93 Difference]: Finished difference Result 236 states and 251 transitions. [2019-11-20 07:15:35,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 07:15:35,370 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2019-11-20 07:15:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:15:35,373 INFO L225 Difference]: With dead ends: 236 [2019-11-20 07:15:35,379 INFO L226 Difference]: Without dead ends: 220 [2019-11-20 07:15:35,380 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 231 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-11-20 07:15:35,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2019-11-20 07:15:35,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2019-11-20 07:15:35,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2019-11-20 07:15:35,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 235 transitions. [2019-11-20 07:15:35,418 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 235 transitions. Word has length 123 [2019-11-20 07:15:35,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:15:35,419 INFO L462 AbstractCegarLoop]: Abstraction has 220 states and 235 transitions. [2019-11-20 07:15:35,419 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 07:15:35,419 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 235 transitions. [2019-11-20 07:15:35,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-20 07:15:35,424 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:15:35,425 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:15:35,630 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:15:35,630 INFO L410 AbstractCegarLoop]: === Iteration 5 === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr3REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l0_insertErr2REQUIRES_VIOLATION, l0_insertErr3REQUIRES_VIOLATION, l0_insertErr4REQUIRES_VIOLATION, l0_insertErr5REQUIRES_VIOLATION, l0_insertErr0REQUIRES_VIOLATION, l0_insertErr1REQUIRES_VIOLATION, l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, l4_destroyErr1REQUIRES_VIOLATION, l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, l4_destroyErr0REQUIRES_VIOLATION, l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l2_insertErr4REQUIRES_VIOLATION, l2_insertErr2REQUIRES_VIOLATION, l2_insertErr3REQUIRES_VIOLATION, l2_insertErr1REQUIRES_VIOLATION, l2_insertErr5REQUIRES_VIOLATION, l2_insertErr0REQUIRES_VIOLATION, l1_destroyErr3REQUIRES_VIOLATION, l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l1_destroyErr2REQUIRES_VIOLATION, l1_destroyErr0REQUIRES_VIOLATION, l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l1_destroyErr1REQUIRES_VIOLATION, l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l3_insertErr4REQUIRES_VIOLATION, l3_insertErr2REQUIRES_VIOLATION, l3_insertErr3REQUIRES_VIOLATION, l3_insertErr1REQUIRES_VIOLATION, l3_insertErr5REQUIRES_VIOLATION, l3_insertErr0REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr4REQUIRES_VIOLATION, l1_insertErr0REQUIRES_VIOLATION, l1_insertErr5REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, calloc_modelErr0REQUIRES_VIOLATION, calloc_modelErr1REQUIRES_VIOLATION, l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr3REQUIRES_VIOLATION, l0_destroyErr2REQUIRES_VIOLATION, l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1REQUIRES_VIOLATION, l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr0REQUIRES_VIOLATION, l4_insertErr4REQUIRES_VIOLATION, l4_insertErr3REQUIRES_VIOLATION, l4_insertErr2REQUIRES_VIOLATION, l4_insertErr7REQUIRES_VIOLATION, l4_insertErr1REQUIRES_VIOLATION, l4_insertErr6REQUIRES_VIOLATION, l4_insertErr0REQUIRES_VIOLATION, l4_insertErr5REQUIRES_VIOLATION, l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr1REQUIRES_VIOLATION, l2_destroyErr0REQUIRES_VIOLATION, l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr3REQUIRES_VIOLATION, l2_destroyErr2REQUIRES_VIOLATION]=== [2019-11-20 07:15:35,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:15:35,631 INFO L82 PathProgramCache]: Analyzing trace with hash 462556322, now seen corresponding path program 1 times [2019-11-20 07:15:35,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:15:35,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1884973345] [2019-11-20 07:15:35,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:15:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:15:36,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 07:15:36,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:15:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2019-11-20 07:15:36,792 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:15:38,177 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-11-20 07:15:38,633 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-11-20 07:15:38,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:15:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2019-11-20 07:15:39,201 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1884973345] [2019-11-20 07:15:39,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 07:15:39,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2019-11-20 07:15:39,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974963043] [2019-11-20 07:15:39,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-20 07:15:39,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:15:39,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 07:15:39,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2019-11-20 07:15:39,204 INFO L87 Difference]: Start difference. First operand 220 states and 235 transitions. Second operand 15 states. [2019-11-20 07:15:40,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:15:40,074 INFO L93 Difference]: Finished difference Result 237 states and 252 transitions. [2019-11-20 07:15:40,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 07:15:40,079 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 129 [2019-11-20 07:15:40,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:15:40,083 INFO L225 Difference]: With dead ends: 237 [2019-11-20 07:15:40,084 INFO L226 Difference]: Without dead ends: 221 [2019-11-20 07:15:40,084 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 241 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2019-11-20 07:15:40,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2019-11-20 07:15:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2019-11-20 07:15:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-11-20 07:15:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 236 transitions. [2019-11-20 07:15:40,113 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 236 transitions. Word has length 129 [2019-11-20 07:15:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:15:40,117 INFO L462 AbstractCegarLoop]: Abstraction has 221 states and 236 transitions. [2019-11-20 07:15:40,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-20 07:15:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 236 transitions. [2019-11-20 07:15:40,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-20 07:15:40,124 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:15:40,125 INFO L410 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:15:40,334 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:15:40,335 INFO L410 AbstractCegarLoop]: === Iteration 6 === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr3REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l0_insertErr2REQUIRES_VIOLATION, l0_insertErr3REQUIRES_VIOLATION, l0_insertErr4REQUIRES_VIOLATION, l0_insertErr5REQUIRES_VIOLATION, l0_insertErr0REQUIRES_VIOLATION, l0_insertErr1REQUIRES_VIOLATION, l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, l4_destroyErr1REQUIRES_VIOLATION, l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, l4_destroyErr0REQUIRES_VIOLATION, l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l2_insertErr4REQUIRES_VIOLATION, l2_insertErr2REQUIRES_VIOLATION, l2_insertErr3REQUIRES_VIOLATION, l2_insertErr1REQUIRES_VIOLATION, l2_insertErr5REQUIRES_VIOLATION, l2_insertErr0REQUIRES_VIOLATION, l1_destroyErr3REQUIRES_VIOLATION, l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l1_destroyErr2REQUIRES_VIOLATION, l1_destroyErr0REQUIRES_VIOLATION, l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l1_destroyErr1REQUIRES_VIOLATION, l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l3_insertErr4REQUIRES_VIOLATION, l3_insertErr2REQUIRES_VIOLATION, l3_insertErr3REQUIRES_VIOLATION, l3_insertErr1REQUIRES_VIOLATION, l3_insertErr5REQUIRES_VIOLATION, l3_insertErr0REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr4REQUIRES_VIOLATION, l1_insertErr0REQUIRES_VIOLATION, l1_insertErr5REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, calloc_modelErr0REQUIRES_VIOLATION, calloc_modelErr1REQUIRES_VIOLATION, l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr3REQUIRES_VIOLATION, l0_destroyErr2REQUIRES_VIOLATION, l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1REQUIRES_VIOLATION, l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr0REQUIRES_VIOLATION, l4_insertErr4REQUIRES_VIOLATION, l4_insertErr3REQUIRES_VIOLATION, l4_insertErr2REQUIRES_VIOLATION, l4_insertErr7REQUIRES_VIOLATION, l4_insertErr1REQUIRES_VIOLATION, l4_insertErr6REQUIRES_VIOLATION, l4_insertErr0REQUIRES_VIOLATION, l4_insertErr5REQUIRES_VIOLATION, l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr1REQUIRES_VIOLATION, l2_destroyErr0REQUIRES_VIOLATION, l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr3REQUIRES_VIOLATION, l2_destroyErr2REQUIRES_VIOLATION]=== [2019-11-20 07:15:40,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:15:40,335 INFO L82 PathProgramCache]: Analyzing trace with hash -66362440, now seen corresponding path program 2 times [2019-11-20 07:15:40,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:15:40,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1810490121] [2019-11-20 07:15:40,336 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:15:41,186 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 07:15:41,186 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 07:15:41,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 07:15:41,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:15:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 120 proven. 3 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2019-11-20 07:15:41,778 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:15:43,188 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-11-20 07:15:43,312 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-11-20 07:15:43,908 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-11-20 07:15:43,910 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:15:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2019-11-20 07:15:44,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1810490121] [2019-11-20 07:15:44,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 07:15:44,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2019-11-20 07:15:44,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104266178] [2019-11-20 07:15:44,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-20 07:15:44,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:15:44,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-20 07:15:44,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2019-11-20 07:15:44,502 INFO L87 Difference]: Start difference. First operand 221 states and 236 transitions. Second operand 17 states. [2019-11-20 07:15:45,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:15:45,614 INFO L93 Difference]: Finished difference Result 238 states and 253 transitions. [2019-11-20 07:15:45,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 07:15:45,619 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 135 [2019-11-20 07:15:45,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:15:45,621 INFO L225 Difference]: With dead ends: 238 [2019-11-20 07:15:45,621 INFO L226 Difference]: Without dead ends: 222 [2019-11-20 07:15:45,622 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 251 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2019-11-20 07:15:45,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2019-11-20 07:15:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2019-11-20 07:15:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2019-11-20 07:15:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 237 transitions. [2019-11-20 07:15:45,642 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 237 transitions. Word has length 135 [2019-11-20 07:15:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:15:45,643 INFO L462 AbstractCegarLoop]: Abstraction has 222 states and 237 transitions. [2019-11-20 07:15:45,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-20 07:15:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 237 transitions. [2019-11-20 07:15:45,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-20 07:15:45,652 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:15:45,653 INFO L410 BasicCegarLoop]: trace histogram [18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:15:45,864 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:15:45,866 INFO L410 AbstractCegarLoop]: === Iteration 7 === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l3_destroyErr3REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l0_insertErr2REQUIRES_VIOLATION, l0_insertErr3REQUIRES_VIOLATION, l0_insertErr4REQUIRES_VIOLATION, l0_insertErr5REQUIRES_VIOLATION, l0_insertErr0REQUIRES_VIOLATION, l0_insertErr1REQUIRES_VIOLATION, l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, l4_destroyErr1REQUIRES_VIOLATION, l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, l4_destroyErr0REQUIRES_VIOLATION, l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l2_insertErr4REQUIRES_VIOLATION, l2_insertErr2REQUIRES_VIOLATION, l2_insertErr3REQUIRES_VIOLATION, l2_insertErr1REQUIRES_VIOLATION, l2_insertErr5REQUIRES_VIOLATION, l2_insertErr0REQUIRES_VIOLATION, l1_destroyErr3REQUIRES_VIOLATION, l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l1_destroyErr2REQUIRES_VIOLATION, l1_destroyErr0REQUIRES_VIOLATION, l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l1_destroyErr1REQUIRES_VIOLATION, l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l3_insertErr4REQUIRES_VIOLATION, l3_insertErr2REQUIRES_VIOLATION, l3_insertErr3REQUIRES_VIOLATION, l3_insertErr1REQUIRES_VIOLATION, l3_insertErr5REQUIRES_VIOLATION, l3_insertErr0REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr4REQUIRES_VIOLATION, l1_insertErr0REQUIRES_VIOLATION, l1_insertErr5REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, calloc_modelErr0REQUIRES_VIOLATION, calloc_modelErr1REQUIRES_VIOLATION, l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr3REQUIRES_VIOLATION, l0_destroyErr2REQUIRES_VIOLATION, l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1REQUIRES_VIOLATION, l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr0REQUIRES_VIOLATION, l4_insertErr4REQUIRES_VIOLATION, l4_insertErr3REQUIRES_VIOLATION, l4_insertErr2REQUIRES_VIOLATION, l4_insertErr7REQUIRES_VIOLATION, l4_insertErr1REQUIRES_VIOLATION, l4_insertErr6REQUIRES_VIOLATION, l4_insertErr0REQUIRES_VIOLATION, l4_insertErr5REQUIRES_VIOLATION, l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr1REQUIRES_VIOLATION, l2_destroyErr0REQUIRES_VIOLATION, l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, l2_destroyErr3REQUIRES_VIOLATION, l2_destroyErr2REQUIRES_VIOLATION]=== [2019-11-20 07:15:45,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:15:45,866 INFO L82 PathProgramCache]: Analyzing trace with hash 27792482, now seen corresponding path program 3 times [2019-11-20 07:15:45,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:15:45,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2070656128] [2019-11-20 07:15:45,868 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46fa7ca-4fd7-4c08-82d2-568c4fe44666/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:15:46,370 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-20 07:15:46,370 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 07:15:46,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 07:15:46,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:15:46,394 INFO L377 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 [2019-11-20 07:15:46,394 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:15:46,398 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:15:46,399 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:15:46,399 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 07:15:46,527 INFO L377 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 [2019-11-20 07:15:46,528 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:15:46,530 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:15:46,530 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 07:15:46,531 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:6, output treesize:5 [2019-11-20 07:15:46,674 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 07:15:46,702 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:15:46,702 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 25 [2019-11-20 07:15:46,703 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:15:46,735 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 07:15:46,736 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 07:15:46,737 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2019-11-20 07:15:46,806 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 259 proven. 7 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2019-11-20 07:15:46,806 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:15:47,394 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:15:47,395 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 07:15:47,401 INFO L168 Benchmark]: Toolchain (without parser) took 26086.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 185.6 MB). Free memory was 944.7 MB in the beginning and 869.3 MB in the end (delta: 75.4 MB). Peak memory consumption was 261.0 MB. Max. memory is 11.5 GB. [2019-11-20 07:15:47,401 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 07:15:47,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 885.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-20 07:15:47,403 INFO L168 Benchmark]: Boogie Preprocessor took 191.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 07:15:47,403 INFO L168 Benchmark]: RCFGBuilder took 1666.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.2 MB). Peak memory consumption was 93.2 MB. Max. memory is 11.5 GB. [2019-11-20 07:15:47,404 INFO L168 Benchmark]: TraceAbstraction took 23337.99 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 47.2 MB). Free memory was 1.0 GB in the beginning and 869.3 MB in the end (delta: 136.8 MB). Peak memory consumption was 184.0 MB. Max. memory is 11.5 GB. [2019-11-20 07:15:47,415 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 885.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 191.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1666.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.2 MB). Peak memory consumption was 93.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 23337.99 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 47.2 MB). Free memory was 1.0 GB in the beginning and 869.3 MB in the end (delta: 136.8 MB). Peak memory consumption was 184.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...