./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort-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_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/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 e6399ca05df7547b7620299987a8a06e9e2c006b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: incompatible size --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 05:27:40,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:27:40,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:27:40,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:27:40,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:27:40,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:27:40,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:27:40,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:27:40,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:27:40,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:27:40,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:27:40,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:27:40,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:27:40,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:27:40,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:27:40,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:27:40,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:27:40,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:27:40,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:27:40,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:27:40,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:27:40,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:27:40,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:27:40,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:27:40,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:27:40,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:27:40,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:27:40,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:27:40,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:27:40,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:27:40,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:27:40,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:27:40,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:27:40,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:27:40,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:27:40,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:27:40,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:27:40,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:27:40,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:27:40,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:27:40,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:27:40,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 05:27:40,411 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:27:40,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:27:40,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:27:40,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:27:40,413 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:27:40,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:27:40,413 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:27:40,413 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 05:27:40,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:27:40,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:27:40,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:27:40,414 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 05:27:40,415 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 05:27:40,415 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 05:27:40,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:27:40,415 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 05:27:40,415 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 05:27:40,416 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:27:40,416 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:27:40,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:27:40,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:27:40,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:27:40,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:27:40,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:27:40,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:27:40,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:27:40,418 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 05:27:40,418 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 05:27:40,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 05:27:40,418 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_79988b12-5b0d-4539-af29-cb7878f1d7e1/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 -> e6399ca05df7547b7620299987a8a06e9e2c006b [2019-11-20 05:27:40,551 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:27:40,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:27:40,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:27:40,571 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:27:40,571 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:27:40,572 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2019-11-20 05:27:40,629 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/data/488e8cd63/b4953f11082442cba0cef61f11a1d4c6/FLAGab13761a5 [2019-11-20 05:27:41,071 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:27:41,072 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2019-11-20 05:27:41,086 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/data/488e8cd63/b4953f11082442cba0cef61f11a1d4c6/FLAGab13761a5 [2019-11-20 05:27:41,096 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/data/488e8cd63/b4953f11082442cba0cef61f11a1d4c6 [2019-11-20 05:27:41,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:27:41,100 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 05:27:41,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:27:41,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:27:41,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:27:41,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:27:41" (1/1) ... [2019-11-20 05:27:41,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72afb120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:27:41, skipping insertion in model container [2019-11-20 05:27:41,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:27:41" (1/1) ... [2019-11-20 05:27:41,114 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:27:41,159 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:27:41,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:27:41,551 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:27:41,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:27:41,662 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:27:41,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:27:41 WrapperNode [2019-11-20 05:27:41,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:27:41,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:27:41,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:27:41,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:27:41,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:27:41" (1/1) ... [2019-11-20 05:27:41,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:27:41" (1/1) ... [2019-11-20 05:27:41,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:27:41" (1/1) ... [2019-11-20 05:27:41,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:27:41" (1/1) ... [2019-11-20 05:27:41,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:27:41" (1/1) ... [2019-11-20 05:27:41,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:27:41" (1/1) ... [2019-11-20 05:27:41,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:27:41" (1/1) ... [2019-11-20 05:27:41,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:27:41,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:27:41,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:27:41,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:27:41,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:27:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/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 05:27:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 05:27:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:27:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 05:27:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 05:27:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2019-11-20 05:27:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2019-11-20 05:27:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2019-11-20 05:27:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2019-11-20 05:27:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2019-11-20 05:27:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2019-11-20 05:27:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 05:27:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 05:27:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 05:27:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 05:27:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 05:27:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 05:27:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 05:27:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 05:27:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 05:27:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 05:27:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 05:27:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 05:27:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 05:27:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 05:27:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 05:27:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 05:27:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 05:27:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 05:27:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 05:27:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 05:27:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 05:27:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 05:27:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 05:27:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 05:27:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 05:27:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 05:27:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 05:27:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 05:27:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 05:27:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 05:27:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 05:27:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 05:27:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 05:27:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 05:27:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 05:27:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 05:27:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 05:27:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 05:27:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 05:27:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 05:27:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 05:27:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 05:27:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 05:27:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 05:27:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 05:27:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 05:27:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 05:27:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 05:27:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 05:27:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 05:27:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 05:27:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 05:27:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 05:27:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 05:27:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 05:27:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 05:27:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 05:27:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 05:27:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-20 05:27:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 05:27:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 05:27:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 05:27:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 05:27:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 05:27:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 05:27:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 05:27:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 05:27:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 05:27:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 05:27:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 05:27:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 05:27:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 05:27:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 05:27:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 05:27:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 05:27:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 05:27:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 05:27:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 05:27:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 05:27:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 05:27:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 05:27:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 05:27:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 05:27:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 05:27:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 05:27:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 05:27:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 05:27:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 05:27:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 05:27:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 05:27:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 05:27:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 05:27:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 05:27:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 05:27:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 05:27:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 05:27:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 05:27:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 05:27:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 05:27:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 05:27:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 05:27:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 05:27:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 05:27:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 05:27:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 05:27:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2019-11-20 05:27:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2019-11-20 05:27:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 05:27:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 05:27:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2019-11-20 05:27:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 05:27:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 05:27:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 05:27:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2019-11-20 05:27:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2019-11-20 05:27:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2019-11-20 05:27:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 05:27:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 05:27:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 05:27:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 05:27:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:27:43,283 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:27:43,283 INFO L285 CfgBuilder]: Removed 33 assume(true) statements. [2019-11-20 05:27:43,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:27:43 BoogieIcfgContainer [2019-11-20 05:27:43,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:27:43,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:27:43,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:27:43,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:27:43,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:27:41" (1/3) ... [2019-11-20 05:27:43,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69549443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:27:43, skipping insertion in model container [2019-11-20 05:27:43,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:27:41" (2/3) ... [2019-11-20 05:27:43,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69549443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:27:43, skipping insertion in model container [2019-11-20 05:27:43,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:27:43" (3/3) ... [2019-11-20 05:27:43,290 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-2.i [2019-11-20 05:27:43,299 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:27:43,305 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 104 error locations. [2019-11-20 05:27:43,314 INFO L249 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2019-11-20 05:27:43,330 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:27:43,331 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 05:27:43,331 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:27:43,331 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:27:43,331 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:27:43,331 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:27:43,331 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:27:43,331 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:27:43,354 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2019-11-20 05:27:43,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 05:27:43,362 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:27:43,362 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:27:43,363 INFO L410 AbstractCegarLoop]: === Iteration 1 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:27:43,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:27:43,368 INFO L82 PathProgramCache]: Analyzing trace with hash 256683086, now seen corresponding path program 1 times [2019-11-20 05:27:43,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:27:43,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [704262419] [2019-11-20 05:27:43,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/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 05:27:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:27:43,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 05:27:43,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:27:43,610 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 05:27:43,611 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:27:43,629 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 05:27:43,630 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [704262419] [2019-11-20 05:27:43,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:27:43,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 05:27:43,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774520286] [2019-11-20 05:27:43,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 05:27:43,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:27:43,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 05:27:43,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 05:27:43,653 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 2 states. [2019-11-20 05:27:43,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:27:43,708 INFO L93 Difference]: Finished difference Result 274 states and 299 transitions. [2019-11-20 05:27:43,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 05:27:43,709 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-20 05:27:43,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:27:43,734 INFO L225 Difference]: With dead ends: 274 [2019-11-20 05:27:43,734 INFO L226 Difference]: Without dead ends: 257 [2019-11-20 05:27:43,735 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 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 05:27:43,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2019-11-20 05:27:43,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2019-11-20 05:27:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2019-11-20 05:27:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 270 transitions. [2019-11-20 05:27:43,801 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 270 transitions. Word has length 9 [2019-11-20 05:27:43,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:27:43,801 INFO L462 AbstractCegarLoop]: Abstraction has 257 states and 270 transitions. [2019-11-20 05:27:43,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 05:27:43,801 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 270 transitions. [2019-11-20 05:27:43,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 05:27:43,802 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:27:43,802 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:27:44,005 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:44,007 INFO L410 AbstractCegarLoop]: === Iteration 2 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:27:44,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:27:44,007 INFO L82 PathProgramCache]: Analyzing trace with hash 256654256, now seen corresponding path program 1 times [2019-11-20 05:27:44,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:27:44,008 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [862745280] [2019-11-20 05:27:44,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/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 05:27:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:27:44,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:27:44,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:27:44,218 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 05:27:44,218 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:27:44,226 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 05:27:44,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [862745280] [2019-11-20 05:27:44,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:27:44,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 05:27:44,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142999246] [2019-11-20 05:27:44,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:27:44,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:27:44,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:27:44,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:27:44,229 INFO L87 Difference]: Start difference. First operand 257 states and 270 transitions. Second operand 3 states. [2019-11-20 05:27:44,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:27:44,789 INFO L93 Difference]: Finished difference Result 298 states and 320 transitions. [2019-11-20 05:27:44,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:27:44,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-20 05:27:44,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:27:44,792 INFO L225 Difference]: With dead ends: 298 [2019-11-20 05:27:44,792 INFO L226 Difference]: Without dead ends: 297 [2019-11-20 05:27:44,793 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 05:27:44,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2019-11-20 05:27:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 259. [2019-11-20 05:27:44,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-11-20 05:27:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 273 transitions. [2019-11-20 05:27:44,812 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 273 transitions. Word has length 9 [2019-11-20 05:27:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:27:44,813 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 273 transitions. [2019-11-20 05:27:44,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:27:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 273 transitions. [2019-11-20 05:27:44,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 05:27:44,814 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:27:44,814 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:27:45,024 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:45,025 INFO L410 AbstractCegarLoop]: === Iteration 3 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:27:45,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:27:45,025 INFO L82 PathProgramCache]: Analyzing trace with hash 256655262, now seen corresponding path program 1 times [2019-11-20 05:27:45,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:27:45,026 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1368338463] [2019-11-20 05:27:45,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/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 05:27:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:27:45,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 05:27:45,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:27:45,256 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 05:27:45,257 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:45,262 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:45,263 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:27:45,263 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:27:45,272 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 05:27:45,272 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:27:45,279 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 05:27:45,279 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1368338463] [2019-11-20 05:27:45,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:27:45,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 05:27:45,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125547670] [2019-11-20 05:27:45,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:27:45,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:27:45,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:27:45,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:27:45,281 INFO L87 Difference]: Start difference. First operand 259 states and 273 transitions. Second operand 3 states. [2019-11-20 05:27:45,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:27:45,678 INFO L93 Difference]: Finished difference Result 276 states and 293 transitions. [2019-11-20 05:27:45,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:27:45,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-20 05:27:45,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:27:45,684 INFO L225 Difference]: With dead ends: 276 [2019-11-20 05:27:45,684 INFO L226 Difference]: Without dead ends: 276 [2019-11-20 05:27:45,685 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 05:27:45,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2019-11-20 05:27:45,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 257. [2019-11-20 05:27:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2019-11-20 05:27:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 271 transitions. [2019-11-20 05:27:45,707 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 271 transitions. Word has length 9 [2019-11-20 05:27:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:27:45,708 INFO L462 AbstractCegarLoop]: Abstraction has 257 states and 271 transitions. [2019-11-20 05:27:45,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:27:45,708 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 271 transitions. [2019-11-20 05:27:45,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 05:27:45,709 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:27:45,709 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:27:45,911 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:45,912 INFO L410 AbstractCegarLoop]: === Iteration 4 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:27:45,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:27:45,912 INFO L82 PathProgramCache]: Analyzing trace with hash 256655263, now seen corresponding path program 1 times [2019-11-20 05:27:45,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:27:45,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1716617585] [2019-11-20 05:27:45,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/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 05:27:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:27:46,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 05:27:46,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:27:46,088 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 05:27:46,088 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:46,094 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:46,095 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:27:46,095 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 05:27:46,102 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 05:27:46,103 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:27:46,130 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 05:27:46,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1716617585] [2019-11-20 05:27:46,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:27:46,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 05:27:46,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531930891] [2019-11-20 05:27:46,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:27:46,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:27:46,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:27:46,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:27:46,131 INFO L87 Difference]: Start difference. First operand 257 states and 271 transitions. Second operand 4 states. [2019-11-20 05:27:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:27:46,994 INFO L93 Difference]: Finished difference Result 286 states and 304 transitions. [2019-11-20 05:27:46,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:27:46,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-20 05:27:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:27:46,997 INFO L225 Difference]: With dead ends: 286 [2019-11-20 05:27:46,997 INFO L226 Difference]: Without dead ends: 286 [2019-11-20 05:27:46,997 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:27:46,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2019-11-20 05:27:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 255. [2019-11-20 05:27:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2019-11-20 05:27:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 269 transitions. [2019-11-20 05:27:47,009 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 269 transitions. Word has length 9 [2019-11-20 05:27:47,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:27:47,010 INFO L462 AbstractCegarLoop]: Abstraction has 255 states and 269 transitions. [2019-11-20 05:27:47,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:27:47,010 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 269 transitions. [2019-11-20 05:27:47,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 05:27:47,011 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:27:47,011 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:27:47,223 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:47,224 INFO L410 AbstractCegarLoop]: === Iteration 5 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:27:47,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:27:47,224 INFO L82 PathProgramCache]: Analyzing trace with hash -656947946, now seen corresponding path program 1 times [2019-11-20 05:27:47,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:27:47,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2045066543] [2019-11-20 05:27:47,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/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 05:27:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:27:47,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 05:27:47,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:27:47,365 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 05:27:47,365 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:27:47,376 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 05:27:47,376 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2045066543] [2019-11-20 05:27:47,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:27:47,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 05:27:47,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128760491] [2019-11-20 05:27:47,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:27:47,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:27:47,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:27:47,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:27:47,377 INFO L87 Difference]: Start difference. First operand 255 states and 269 transitions. Second operand 3 states. [2019-11-20 05:27:47,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:27:47,422 INFO L93 Difference]: Finished difference Result 269 states and 281 transitions. [2019-11-20 05:27:47,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:27:47,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-20 05:27:47,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:27:47,425 INFO L225 Difference]: With dead ends: 269 [2019-11-20 05:27:47,425 INFO L226 Difference]: Without dead ends: 268 [2019-11-20 05:27:47,425 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 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 05:27:47,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2019-11-20 05:27:47,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 254. [2019-11-20 05:27:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2019-11-20 05:27:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 267 transitions. [2019-11-20 05:27:47,433 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 267 transitions. Word has length 13 [2019-11-20 05:27:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:27:47,434 INFO L462 AbstractCegarLoop]: Abstraction has 254 states and 267 transitions. [2019-11-20 05:27:47,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:27:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 267 transitions. [2019-11-20 05:27:47,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 05:27:47,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:27:47,434 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:27:47,635 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:47,635 INFO L410 AbstractCegarLoop]: === Iteration 6 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:27:47,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:27:47,636 INFO L82 PathProgramCache]: Analyzing trace with hash 176123619, now seen corresponding path program 1 times [2019-11-20 05:27:47,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:27:47,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [760862254] [2019-11-20 05:27:47,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/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 05:27:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:27:47,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:27:47,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:27:47,810 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:47,810 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 12 treesize of output 28 [2019-11-20 05:27:47,811 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:47,837 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 05:27:47,838 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 05:27:47,838 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2019-11-20 05:27:47,853 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 05:27:47,853 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:27:47,860 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 05:27:47,860 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [760862254] [2019-11-20 05:27:47,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:27:47,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2019-11-20 05:27:47,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642035042] [2019-11-20 05:27:47,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:27:47,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:27:47,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:27:47,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:27:47,861 INFO L87 Difference]: Start difference. First operand 254 states and 267 transitions. Second operand 4 states. [2019-11-20 05:27:48,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:27:48,396 INFO L93 Difference]: Finished difference Result 285 states and 302 transitions. [2019-11-20 05:27:48,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:27:48,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-20 05:27:48,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:27:48,399 INFO L225 Difference]: With dead ends: 285 [2019-11-20 05:27:48,399 INFO L226 Difference]: Without dead ends: 285 [2019-11-20 05:27:48,399 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:27:48,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2019-11-20 05:27:48,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 252. [2019-11-20 05:27:48,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2019-11-20 05:27:48,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 265 transitions. [2019-11-20 05:27:48,408 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 265 transitions. Word has length 13 [2019-11-20 05:27:48,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:27:48,409 INFO L462 AbstractCegarLoop]: Abstraction has 252 states and 265 transitions. [2019-11-20 05:27:48,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:27:48,409 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 265 transitions. [2019-11-20 05:27:48,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 05:27:48,410 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:27:48,410 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:27:48,614 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:48,614 INFO L410 AbstractCegarLoop]: === Iteration 7 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:27:48,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:27:48,615 INFO L82 PathProgramCache]: Analyzing trace with hash 176123620, now seen corresponding path program 1 times [2019-11-20 05:27:48,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:27:48,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1938977805] [2019-11-20 05:27:48,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/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 05:27:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:27:48,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 05:27:48,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:27:48,791 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 05:27:48,792 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:48,797 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:48,798 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:27:48,798 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 05:27:48,804 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 05:27:48,804 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:27:48,851 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 05:27:48,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1938977805] [2019-11-20 05:27:48,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:27:48,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 05:27:48,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506988114] [2019-11-20 05:27:48,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:27:48,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:27:48,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:27:48,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:27:48,853 INFO L87 Difference]: Start difference. First operand 252 states and 265 transitions. Second operand 4 states. [2019-11-20 05:27:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:27:49,558 INFO L93 Difference]: Finished difference Result 284 states and 300 transitions. [2019-11-20 05:27:49,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:27:49,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-20 05:27:49,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:27:49,562 INFO L225 Difference]: With dead ends: 284 [2019-11-20 05:27:49,562 INFO L226 Difference]: Without dead ends: 284 [2019-11-20 05:27:49,562 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:27:49,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2019-11-20 05:27:49,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 250. [2019-11-20 05:27:49,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2019-11-20 05:27:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 263 transitions. [2019-11-20 05:27:49,570 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 263 transitions. Word has length 13 [2019-11-20 05:27:49,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:27:49,570 INFO L462 AbstractCegarLoop]: Abstraction has 250 states and 263 transitions. [2019-11-20 05:27:49,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:27:49,570 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 263 transitions. [2019-11-20 05:27:49,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 05:27:49,571 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:27:49,571 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:27:49,777 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:49,778 INFO L410 AbstractCegarLoop]: === Iteration 8 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:27:49,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:27:49,778 INFO L82 PathProgramCache]: Analyzing trace with hash -61090836, now seen corresponding path program 1 times [2019-11-20 05:27:49,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:27:49,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [595743835] [2019-11-20 05:27:49,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:27:49,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:27:49,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:27:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:27:49,951 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:27:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:27:49,957 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [595743835] [2019-11-20 05:27:49,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:27:49,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 05:27:49,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406769325] [2019-11-20 05:27:49,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:27:49,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:27:49,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:27:49,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:27:49,959 INFO L87 Difference]: Start difference. First operand 250 states and 263 transitions. Second operand 4 states. [2019-11-20 05:27:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:27:50,084 INFO L93 Difference]: Finished difference Result 288 states and 304 transitions. [2019-11-20 05:27:50,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:27:50,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-20 05:27:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:27:50,086 INFO L225 Difference]: With dead ends: 288 [2019-11-20 05:27:50,086 INFO L226 Difference]: Without dead ends: 288 [2019-11-20 05:27:50,086 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:27:50,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2019-11-20 05:27:50,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 250. [2019-11-20 05:27:50,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2019-11-20 05:27:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 262 transitions. [2019-11-20 05:27:50,094 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 262 transitions. Word has length 18 [2019-11-20 05:27:50,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:27:50,094 INFO L462 AbstractCegarLoop]: Abstraction has 250 states and 262 transitions. [2019-11-20 05:27:50,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:27:50,094 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 262 transitions. [2019-11-20 05:27:50,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 05:27:50,095 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:27:50,095 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:27:50,298 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:50,299 INFO L410 AbstractCegarLoop]: === Iteration 9 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:27:50,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:27:50,299 INFO L82 PathProgramCache]: Analyzing trace with hash 128507730, now seen corresponding path program 1 times [2019-11-20 05:27:50,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:27:50,300 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1843745862] [2019-11-20 05:27:50,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:27:50,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 05:27:50,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:27:50,478 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:50,478 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 12 treesize of output 28 [2019-11-20 05:27:50,479 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:50,501 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 05:27:50,502 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 05:27:50,502 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2019-11-20 05:27:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:27:50,534 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:27:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:27:50,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1843745862] [2019-11-20 05:27:50,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:27:50,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 6 [2019-11-20 05:27:50,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229282332] [2019-11-20 05:27:50,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:27:50,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:27:50,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:27:50,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:27:50,555 INFO L87 Difference]: Start difference. First operand 250 states and 262 transitions. Second operand 7 states. [2019-11-20 05:27:51,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:27:51,620 INFO L93 Difference]: Finished difference Result 275 states and 292 transitions. [2019-11-20 05:27:51,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:27:51,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2019-11-20 05:27:51,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:27:51,622 INFO L225 Difference]: With dead ends: 275 [2019-11-20 05:27:51,622 INFO L226 Difference]: Without dead ends: 275 [2019-11-20 05:27:51,623 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-20 05:27:51,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2019-11-20 05:27:51,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 243. [2019-11-20 05:27:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2019-11-20 05:27:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 257 transitions. [2019-11-20 05:27:51,630 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 257 transitions. Word has length 22 [2019-11-20 05:27:51,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:27:51,630 INFO L462 AbstractCegarLoop]: Abstraction has 243 states and 257 transitions. [2019-11-20 05:27:51,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:27:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 257 transitions. [2019-11-20 05:27:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 05:27:51,631 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:27:51,631 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:27:51,832 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:51,834 INFO L410 AbstractCegarLoop]: === Iteration 10 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:27:51,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:27:51,834 INFO L82 PathProgramCache]: Analyzing trace with hash 128507731, now seen corresponding path program 1 times [2019-11-20 05:27:51,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:27:51,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [419466819] [2019-11-20 05:27:51,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:27:51,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 05:27:51,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:27:52,005 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 05:27:52,006 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:52,010 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:52,010 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:27:52,010 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 05:27:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:27:52,061 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:27:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:27:52,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [419466819] [2019-11-20 05:27:52,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:27:52,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-20 05:27:52,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564773980] [2019-11-20 05:27:52,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 05:27:52,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:27:52,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 05:27:52,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-20 05:27:52,241 INFO L87 Difference]: Start difference. First operand 243 states and 257 transitions. Second operand 10 states. [2019-11-20 05:27:54,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:27:54,878 INFO L93 Difference]: Finished difference Result 304 states and 320 transitions. [2019-11-20 05:27:54,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:27:54,880 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2019-11-20 05:27:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:27:54,881 INFO L225 Difference]: With dead ends: 304 [2019-11-20 05:27:54,881 INFO L226 Difference]: Without dead ends: 304 [2019-11-20 05:27:54,882 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-20 05:27:54,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2019-11-20 05:27:54,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 264. [2019-11-20 05:27:54,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2019-11-20 05:27:54,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 279 transitions. [2019-11-20 05:27:54,890 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 279 transitions. Word has length 22 [2019-11-20 05:27:54,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:27:54,890 INFO L462 AbstractCegarLoop]: Abstraction has 264 states and 279 transitions. [2019-11-20 05:27:54,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 05:27:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 279 transitions. [2019-11-20 05:27:54,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 05:27:54,891 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:27:54,891 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:27:55,094 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:55,094 INFO L410 AbstractCegarLoop]: === Iteration 11 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:27:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:27:55,094 INFO L82 PathProgramCache]: Analyzing trace with hash -499657725, now seen corresponding path program 1 times [2019-11-20 05:27:55,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:27:55,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [180073176] [2019-11-20 05:27:55,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:27:55,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 05:27:55,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:27:55,290 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 05:27:55,290 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:55,292 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:55,292 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:27:55,292 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:27:55,309 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:55,310 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 12 treesize of output 28 [2019-11-20 05:27:55,310 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:55,328 INFO L567 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2019-11-20 05:27:55,329 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:27:55,329 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2019-11-20 05:27:55,347 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:27:55,347 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:55,362 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:55,363 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:27:55,363 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:22 [2019-11-20 05:27:55,392 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:27:55,393 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-11-20 05:27:55,394 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:55,410 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:55,411 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:27:55,411 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:20 [2019-11-20 05:27:55,480 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-11-20 05:27:55,480 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:55,484 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:55,485 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:27:55,485 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:11 [2019-11-20 05:27:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:27:55,504 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:27:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:27:55,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [180073176] [2019-11-20 05:27:55,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:27:55,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 12 [2019-11-20 05:27:55,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192258651] [2019-11-20 05:27:55,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 05:27:55,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:27:55,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 05:27:55,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-11-20 05:27:55,636 INFO L87 Difference]: Start difference. First operand 264 states and 279 transitions. Second operand 13 states. [2019-11-20 05:27:57,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:27:57,208 INFO L93 Difference]: Finished difference Result 285 states and 301 transitions. [2019-11-20 05:27:57,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 05:27:57,208 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2019-11-20 05:27:57,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:27:57,210 INFO L225 Difference]: With dead ends: 285 [2019-11-20 05:27:57,210 INFO L226 Difference]: Without dead ends: 285 [2019-11-20 05:27:57,211 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2019-11-20 05:27:57,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2019-11-20 05:27:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 265. [2019-11-20 05:27:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2019-11-20 05:27:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 281 transitions. [2019-11-20 05:27:57,220 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 281 transitions. Word has length 33 [2019-11-20 05:27:57,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:27:57,221 INFO L462 AbstractCegarLoop]: Abstraction has 265 states and 281 transitions. [2019-11-20 05:27:57,221 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 05:27:57,221 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 281 transitions. [2019-11-20 05:27:57,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 05:27:57,228 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:27:57,228 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:27:57,439 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:57,439 INFO L410 AbstractCegarLoop]: === Iteration 12 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:27:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:27:57,440 INFO L82 PathProgramCache]: Analyzing trace with hash -499657724, now seen corresponding path program 1 times [2019-11-20 05:27:57,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:27:57,440 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [209986577] [2019-11-20 05:27:57,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:27:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:27:57,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-20 05:27:57,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:27:57,680 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 05:27:57,680 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:57,686 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:57,689 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 05:27:57,689 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:57,694 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:57,694 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:27:57,695 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 05:27:57,714 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:27:57,715 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2019-11-20 05:27:57,716 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:57,727 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:57,734 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:57,735 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-11-20 05:27:57,735 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:57,745 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:57,746 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:27:57,746 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2019-11-20 05:27:57,780 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:27:57,780 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:57,800 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:57,804 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:27:57,804 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:57,816 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:57,817 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:27:57,817 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:35 [2019-11-20 05:27:57,848 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:27:57,849 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2019-11-20 05:27:57,850 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:57,871 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:57,879 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:27:57,880 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2019-11-20 05:27:57,880 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:57,898 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:57,898 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:27:57,898 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:61, output treesize:35 [2019-11-20 05:27:58,022 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2019-11-20 05:27:58,022 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:58,035 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:58,038 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 05:27:58,038 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:27:58,046 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:27:58,047 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:27:58,047 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:48, output treesize:20 [2019-11-20 05:27:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:27:58,077 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:27:58,527 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:27:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:27:59,115 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [209986577] [2019-11-20 05:27:59,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:27:59,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2019-11-20 05:27:59,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12840658] [2019-11-20 05:27:59,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 05:27:59,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:27:59,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 05:27:59,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2019-11-20 05:27:59,117 INFO L87 Difference]: Start difference. First operand 265 states and 281 transitions. Second operand 16 states. [2019-11-20 05:28:03,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:28:03,190 INFO L93 Difference]: Finished difference Result 296 states and 312 transitions. [2019-11-20 05:28:03,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 05:28:03,191 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2019-11-20 05:28:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:28:03,193 INFO L225 Difference]: With dead ends: 296 [2019-11-20 05:28:03,193 INFO L226 Difference]: Without dead ends: 296 [2019-11-20 05:28:03,193 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2019-11-20 05:28:03,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2019-11-20 05:28:03,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 265. [2019-11-20 05:28:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2019-11-20 05:28:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 280 transitions. [2019-11-20 05:28:03,201 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 280 transitions. Word has length 33 [2019-11-20 05:28:03,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:28:03,203 INFO L462 AbstractCegarLoop]: Abstraction has 265 states and 280 transitions. [2019-11-20 05:28:03,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 05:28:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 280 transitions. [2019-11-20 05:28:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 05:28:03,205 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:28:03,205 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:28:03,409 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:03,409 INFO L410 AbstractCegarLoop]: === Iteration 13 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:28:03,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:28:03,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1593832869, now seen corresponding path program 1 times [2019-11-20 05:28:03,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:28:03,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [895057695] [2019-11-20 05:28:03,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:28:03,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-20 05:28:03,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:28:03,609 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:28:03,609 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:03,618 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:03,620 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:28:03,620 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:03,627 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:03,627 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:03,627 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-11-20 05:28:03,689 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 05:28:03,689 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:03,695 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:03,696 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 05:28:03,697 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:03,700 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:03,701 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:03,701 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-11-20 05:28:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:28:03,717 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:28:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:28:03,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [895057695] [2019-11-20 05:28:03,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:28:03,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2019-11-20 05:28:03,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437962270] [2019-11-20 05:28:03,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 05:28:03,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:28:03,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 05:28:03,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-11-20 05:28:03,867 INFO L87 Difference]: Start difference. First operand 265 states and 280 transitions. Second operand 13 states. [2019-11-20 05:28:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:28:05,200 INFO L93 Difference]: Finished difference Result 326 states and 345 transitions. [2019-11-20 05:28:05,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 05:28:05,201 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2019-11-20 05:28:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:28:05,202 INFO L225 Difference]: With dead ends: 326 [2019-11-20 05:28:05,202 INFO L226 Difference]: Without dead ends: 322 [2019-11-20 05:28:05,203 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2019-11-20 05:28:05,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2019-11-20 05:28:05,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 295. [2019-11-20 05:28:05,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2019-11-20 05:28:05,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 311 transitions. [2019-11-20 05:28:05,210 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 311 transitions. Word has length 33 [2019-11-20 05:28:05,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:28:05,211 INFO L462 AbstractCegarLoop]: Abstraction has 295 states and 311 transitions. [2019-11-20 05:28:05,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 05:28:05,211 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 311 transitions. [2019-11-20 05:28:05,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-20 05:28:05,212 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:28:05,212 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:28:05,412 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:05,413 INFO L410 AbstractCegarLoop]: === Iteration 14 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:28:05,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:28:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1613735481, now seen corresponding path program 1 times [2019-11-20 05:28:05,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:28:05,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1750916941] [2019-11-20 05:28:05,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:28:05,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 05:28:05,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:28:05,644 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:28:05,645 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:05,653 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:05,656 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:28:05,656 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:05,662 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:05,663 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:05,663 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-11-20 05:28:05,743 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 05:28:05,743 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:05,751 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:05,753 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 05:28:05,753 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:05,756 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:05,756 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:05,757 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-11-20 05:28:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:28:05,773 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:28:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:28:05,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1750916941] [2019-11-20 05:28:05,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:28:05,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 10 [2019-11-20 05:28:05,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921678689] [2019-11-20 05:28:05,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 05:28:05,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:28:05,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 05:28:05,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-20 05:28:05,826 INFO L87 Difference]: Start difference. First operand 295 states and 311 transitions. Second operand 10 states. [2019-11-20 05:28:06,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:28:06,570 INFO L93 Difference]: Finished difference Result 354 states and 371 transitions. [2019-11-20 05:28:06,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:28:06,571 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2019-11-20 05:28:06,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:28:06,573 INFO L225 Difference]: With dead ends: 354 [2019-11-20 05:28:06,573 INFO L226 Difference]: Without dead ends: 354 [2019-11-20 05:28:06,573 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-11-20 05:28:06,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2019-11-20 05:28:06,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 319. [2019-11-20 05:28:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2019-11-20 05:28:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 348 transitions. [2019-11-20 05:28:06,581 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 348 transitions. Word has length 43 [2019-11-20 05:28:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:28:06,581 INFO L462 AbstractCegarLoop]: Abstraction has 319 states and 348 transitions. [2019-11-20 05:28:06,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 05:28:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 348 transitions. [2019-11-20 05:28:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-20 05:28:06,583 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:28:06,583 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:28:06,786 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:06,786 INFO L410 AbstractCegarLoop]: === Iteration 15 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:28:06,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:28:06,786 INFO L82 PathProgramCache]: Analyzing trace with hash 2014943713, now seen corresponding path program 2 times [2019-11-20 05:28:06,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:28:06,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1117167202] [2019-11-20 05:28:06,787 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:07,014 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 05:28:07,014 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:28:07,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 05:28:07,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:28:07,024 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 05:28:07,025 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:07,026 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:07,026 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:07,027 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:28:07,063 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:07,063 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 12 treesize of output 28 [2019-11-20 05:28:07,064 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:07,103 INFO L567 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2019-11-20 05:28:07,103 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:07,103 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2019-11-20 05:28:07,120 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:28:07,120 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:07,131 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:07,131 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:07,131 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:22 [2019-11-20 05:28:07,153 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:28:07,154 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-11-20 05:28:07,154 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:07,166 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:07,167 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:07,167 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:20 [2019-11-20 05:28:07,242 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-11-20 05:28:07,242 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:07,246 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:07,247 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:28:07,247 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:11 [2019-11-20 05:28:07,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 05:28:07,269 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:28:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 05:28:07,474 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1117167202] [2019-11-20 05:28:07,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:28:07,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2019-11-20 05:28:07,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266952609] [2019-11-20 05:28:07,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 05:28:07,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:28:07,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 05:28:07,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2019-11-20 05:28:07,475 INFO L87 Difference]: Start difference. First operand 319 states and 348 transitions. Second operand 14 states. [2019-11-20 05:28:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:28:09,188 INFO L93 Difference]: Finished difference Result 347 states and 377 transitions. [2019-11-20 05:28:09,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 05:28:09,188 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2019-11-20 05:28:09,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:28:09,190 INFO L225 Difference]: With dead ends: 347 [2019-11-20 05:28:09,191 INFO L226 Difference]: Without dead ends: 347 [2019-11-20 05:28:09,191 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2019-11-20 05:28:09,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2019-11-20 05:28:09,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 320. [2019-11-20 05:28:09,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-20 05:28:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 350 transitions. [2019-11-20 05:28:09,198 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 350 transitions. Word has length 42 [2019-11-20 05:28:09,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:28:09,199 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 350 transitions. [2019-11-20 05:28:09,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 05:28:09,199 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 350 transitions. [2019-11-20 05:28:09,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-20 05:28:09,200 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:28:09,200 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:28:09,403 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:09,404 INFO L410 AbstractCegarLoop]: === Iteration 16 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:28:09,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:28:09,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2014943714, now seen corresponding path program 1 times [2019-11-20 05:28:09,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:28:09,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [900596731] [2019-11-20 05:28:09,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:28:09,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-20 05:28:09,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:28:09,719 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 05:28:09,719 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:09,725 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:09,727 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 05:28:09,727 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:09,733 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:09,733 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:09,733 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 05:28:09,755 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:28:09,756 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2019-11-20 05:28:09,756 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:09,773 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:09,780 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:09,781 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-11-20 05:28:09,781 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:09,790 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:09,790 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:09,790 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2019-11-20 05:28:09,808 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:28:09,808 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:09,822 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:09,825 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:28:09,825 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:09,837 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:09,837 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:09,838 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:35 [2019-11-20 05:28:09,864 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:28:09,864 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2019-11-20 05:28:09,865 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:09,888 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:09,892 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:28:09,892 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2019-11-20 05:28:09,893 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:09,911 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:09,911 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:09,911 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:61, output treesize:35 [2019-11-20 05:28:09,999 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2019-11-20 05:28:09,999 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:10,014 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:10,021 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 05:28:10,021 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:10,032 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:10,032 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:28:10,032 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:48, output treesize:22 [2019-11-20 05:28:10,092 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 05:28:10,093 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:28:10,659 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:28:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 05:28:11,122 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [900596731] [2019-11-20 05:28:11,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:28:11,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2019-11-20 05:28:11,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520312811] [2019-11-20 05:28:11,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 05:28:11,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:28:11,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 05:28:11,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2019-11-20 05:28:11,123 INFO L87 Difference]: Start difference. First operand 320 states and 350 transitions. Second operand 16 states. [2019-11-20 05:28:15,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:28:15,200 INFO L93 Difference]: Finished difference Result 346 states and 376 transitions. [2019-11-20 05:28:15,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 05:28:15,200 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2019-11-20 05:28:15,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:28:15,202 INFO L225 Difference]: With dead ends: 346 [2019-11-20 05:28:15,202 INFO L226 Difference]: Without dead ends: 346 [2019-11-20 05:28:15,206 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2019-11-20 05:28:15,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2019-11-20 05:28:15,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 320. [2019-11-20 05:28:15,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-20 05:28:15,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 349 transitions. [2019-11-20 05:28:15,213 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 349 transitions. Word has length 42 [2019-11-20 05:28:15,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:28:15,214 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 349 transitions. [2019-11-20 05:28:15,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 05:28:15,214 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 349 transitions. [2019-11-20 05:28:15,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-20 05:28:15,214 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:28:15,214 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:28:15,422 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:15,422 INFO L410 AbstractCegarLoop]: === Iteration 17 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:28:15,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:28:15,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1448823109, now seen corresponding path program 1 times [2019-11-20 05:28:15,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:28:15,423 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1881689440] [2019-11-20 05:28:15,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:28:15,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 05:28:15,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:28:15,648 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:15,648 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 12 treesize of output 28 [2019-11-20 05:28:15,648 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:15,660 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 05:28:15,661 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 05:28:15,661 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2019-11-20 05:28:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:28:15,714 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:28:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:28:15,732 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1881689440] [2019-11-20 05:28:15,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:28:15,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 6 [2019-11-20 05:28:15,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377652803] [2019-11-20 05:28:15,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:28:15,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:28:15,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:28:15,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:28:15,733 INFO L87 Difference]: Start difference. First operand 320 states and 349 transitions. Second operand 7 states. [2019-11-20 05:28:16,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:28:16,646 INFO L93 Difference]: Finished difference Result 332 states and 361 transitions. [2019-11-20 05:28:16,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:28:16,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2019-11-20 05:28:16,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:28:16,648 INFO L225 Difference]: With dead ends: 332 [2019-11-20 05:28:16,648 INFO L226 Difference]: Without dead ends: 332 [2019-11-20 05:28:16,649 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-20 05:28:16,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2019-11-20 05:28:16,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 317. [2019-11-20 05:28:16,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2019-11-20 05:28:16,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 343 transitions. [2019-11-20 05:28:16,655 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 343 transitions. Word has length 44 [2019-11-20 05:28:16,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:28:16,656 INFO L462 AbstractCegarLoop]: Abstraction has 317 states and 343 transitions. [2019-11-20 05:28:16,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:28:16,656 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 343 transitions. [2019-11-20 05:28:16,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-20 05:28:16,656 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:28:16,657 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:28:16,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:16,857 INFO L410 AbstractCegarLoop]: === Iteration 18 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:28:16,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:28:16,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1448823110, now seen corresponding path program 1 times [2019-11-20 05:28:16,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:28:16,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2141624690] [2019-11-20 05:28:16,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:28:17,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 05:28:17,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:28:17,069 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 05:28:17,069 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:17,073 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:17,073 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:17,074 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 05:28:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:28:17,145 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:28:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:28:17,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2141624690] [2019-11-20 05:28:17,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:28:17,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 10 [2019-11-20 05:28:17,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988910560] [2019-11-20 05:28:17,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 05:28:17,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:28:17,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 05:28:17,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:28:17,316 INFO L87 Difference]: Start difference. First operand 317 states and 343 transitions. Second operand 11 states. [2019-11-20 05:28:20,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:28:20,047 INFO L93 Difference]: Finished difference Result 441 states and 472 transitions. [2019-11-20 05:28:20,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 05:28:20,049 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2019-11-20 05:28:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:28:20,051 INFO L225 Difference]: With dead ends: 441 [2019-11-20 05:28:20,051 INFO L226 Difference]: Without dead ends: 441 [2019-11-20 05:28:20,051 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2019-11-20 05:28:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2019-11-20 05:28:20,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 315. [2019-11-20 05:28:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-11-20 05:28:20,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 337 transitions. [2019-11-20 05:28:20,062 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 337 transitions. Word has length 44 [2019-11-20 05:28:20,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:28:20,063 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 337 transitions. [2019-11-20 05:28:20,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 05:28:20,063 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 337 transitions. [2019-11-20 05:28:20,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-20 05:28:20,064 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:28:20,064 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:28:20,274 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:20,274 INFO L410 AbstractCegarLoop]: === Iteration 19 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:28:20,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:28:20,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1219718894, now seen corresponding path program 1 times [2019-11-20 05:28:20,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:28:20,275 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1961232950] [2019-11-20 05:28:20,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:28:20,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-20 05:28:20,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:28:20,539 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:20,539 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 12 treesize of output 28 [2019-11-20 05:28:20,540 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:20,552 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 05:28:20,552 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 05:28:20,552 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2019-11-20 05:28:20,579 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:20,580 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-11-20 05:28:20,580 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:20,597 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-20 05:28:20,598 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 05:28:20,598 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2019-11-20 05:28:20,638 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:20,638 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 54 [2019-11-20 05:28:20,639 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:20,668 INFO L567 ElimStorePlain]: treesize reduction 28, result has 45.1 percent of original size [2019-11-20 05:28:20,669 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 05:28:20,669 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:23 [2019-11-20 05:28:20,700 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:28:20,700 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:20,713 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:20,714 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:28:20,714 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:39 [2019-11-20 05:28:20,849 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2019-11-20 05:28:20,850 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:20,857 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:20,858 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 05:28:20,858 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:24 [2019-11-20 05:28:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:28:20,955 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:28:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:28:21,201 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1961232950] [2019-11-20 05:28:21,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:28:21,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2019-11-20 05:28:21,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203226505] [2019-11-20 05:28:21,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-20 05:28:21,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:28:21,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-20 05:28:21,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2019-11-20 05:28:21,203 INFO L87 Difference]: Start difference. First operand 315 states and 337 transitions. Second operand 21 states. [2019-11-20 05:28:23,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:28:23,970 INFO L93 Difference]: Finished difference Result 358 states and 384 transitions. [2019-11-20 05:28:23,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 05:28:23,970 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 47 [2019-11-20 05:28:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:28:23,972 INFO L225 Difference]: With dead ends: 358 [2019-11-20 05:28:23,972 INFO L226 Difference]: Without dead ends: 358 [2019-11-20 05:28:23,972 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2019-11-20 05:28:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2019-11-20 05:28:23,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 320. [2019-11-20 05:28:23,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-20 05:28:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 343 transitions. [2019-11-20 05:28:23,979 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 343 transitions. Word has length 47 [2019-11-20 05:28:23,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:28:23,980 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 343 transitions. [2019-11-20 05:28:23,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-20 05:28:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 343 transitions. [2019-11-20 05:28:23,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-20 05:28:23,980 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:28:23,980 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:28:24,181 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:24,181 INFO L410 AbstractCegarLoop]: === Iteration 20 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:28:24,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:28:24,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1219718895, now seen corresponding path program 1 times [2019-11-20 05:28:24,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:28:24,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1581502431] [2019-11-20 05:28:24,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:28:24,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-20 05:28:24,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:28:24,491 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 05:28:24,491 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:24,497 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:24,499 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 05:28:24,499 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:24,504 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:24,504 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:24,505 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 05:28:24,529 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:24,529 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-11-20 05:28:24,529 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:24,537 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:24,539 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2019-11-20 05:28:24,540 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:24,547 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:24,548 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:28:24,548 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:20 [2019-11-20 05:28:24,602 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:24,603 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 54 [2019-11-20 05:28:24,603 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:24,639 INFO L567 ElimStorePlain]: treesize reduction 28, result has 48.1 percent of original size [2019-11-20 05:28:24,639 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 05:28:24,640 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:26 [2019-11-20 05:28:24,668 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:28:24,668 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:24,687 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:24,690 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:28:24,691 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:24,706 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:24,707 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:28:24,707 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:53, output treesize:48 [2019-11-20 05:28:24,890 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2019-11-20 05:28:24,891 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:24,908 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:24,912 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 05:28:24,912 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:24,926 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:24,926 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 05:28:24,926 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:55, output treesize:27 [2019-11-20 05:28:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:28:25,020 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:28:25,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:28:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:28:26,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1581502431] [2019-11-20 05:28:26,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:28:26,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2019-11-20 05:28:26,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096081520] [2019-11-20 05:28:26,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-20 05:28:26,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:28:26,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-20 05:28:26,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2019-11-20 05:28:26,385 INFO L87 Difference]: Start difference. First operand 320 states and 343 transitions. Second operand 22 states. [2019-11-20 05:28:30,651 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-11-20 05:28:35,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:28:35,706 INFO L93 Difference]: Finished difference Result 412 states and 437 transitions. [2019-11-20 05:28:35,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-20 05:28:35,706 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 47 [2019-11-20 05:28:35,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:28:35,708 INFO L225 Difference]: With dead ends: 412 [2019-11-20 05:28:35,708 INFO L226 Difference]: Without dead ends: 412 [2019-11-20 05:28:35,709 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2019-11-20 05:28:35,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2019-11-20 05:28:35,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 339. [2019-11-20 05:28:35,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2019-11-20 05:28:35,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 362 transitions. [2019-11-20 05:28:35,716 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 362 transitions. Word has length 47 [2019-11-20 05:28:35,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:28:35,716 INFO L462 AbstractCegarLoop]: Abstraction has 339 states and 362 transitions. [2019-11-20 05:28:35,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-20 05:28:35,716 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 362 transitions. [2019-11-20 05:28:35,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-20 05:28:35,717 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:28:35,717 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:28:35,921 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:35,921 INFO L410 AbstractCegarLoop]: === Iteration 21 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:28:35,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:28:35,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1439097603, now seen corresponding path program 2 times [2019-11-20 05:28:35,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:28:35,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2034915239] [2019-11-20 05:28:35,922 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:36,087 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 05:28:36,087 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:28:36,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 05:28:36,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:28:36,146 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-11-20 05:28:36,147 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:36,163 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:36,166 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-11-20 05:28:36,166 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:36,171 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:36,171 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:36,171 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2019-11-20 05:28:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-20 05:28:36,200 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:28:38,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:28:42,441 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:28:42,454 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2019-11-20 05:28:42,454 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:42,485 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:42,485 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2019-11-20 05:28:42,485 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:28:42,486 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:48,604 WARN L191 SmtUtils]: Spent 6.12 s on a formula simplification that was a NOOP. DAG size: 22 [2019-11-20 05:28:48,604 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:48,609 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2019-11-20 05:28:48,609 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2019-11-20 05:28:48,612 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:28:48,612 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 1 [2019-11-20 05:28:48,613 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:48,617 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:48,617 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-20 05:28:48,617 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:61, output treesize:11 [2019-11-20 05:28:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-20 05:28:48,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2034915239] [2019-11-20 05:28:48,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:28:48,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2019-11-20 05:28:48,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274235305] [2019-11-20 05:28:48,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 05:28:48,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:28:48,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 05:28:48,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-20 05:28:48,625 INFO L87 Difference]: Start difference. First operand 339 states and 362 transitions. Second operand 8 states. [2019-11-20 05:28:49,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:28:49,331 INFO L93 Difference]: Finished difference Result 366 states and 390 transitions. [2019-11-20 05:28:49,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 05:28:49,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-11-20 05:28:49,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:28:49,334 INFO L225 Difference]: With dead ends: 366 [2019-11-20 05:28:49,334 INFO L226 Difference]: Without dead ends: 366 [2019-11-20 05:28:49,334 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:28:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2019-11-20 05:28:49,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 343. [2019-11-20 05:28:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-11-20 05:28:49,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 366 transitions. [2019-11-20 05:28:49,344 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 366 transitions. Word has length 52 [2019-11-20 05:28:49,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:28:49,344 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 366 transitions. [2019-11-20 05:28:49,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 05:28:49,345 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 366 transitions. [2019-11-20 05:28:49,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-20 05:28:49,345 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:28:49,346 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:49,550 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:49,550 INFO L410 AbstractCegarLoop]: === Iteration 22 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:28:49,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:28:49,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1919135098, now seen corresponding path program 1 times [2019-11-20 05:28:49,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:28:49,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [712494539] [2019-11-20 05:28:49,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:28:49,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-20 05:28:49,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:28:49,862 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:28:49,862 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:49,869 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:49,870 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:49,870 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:3 [2019-11-20 05:28:50,007 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2019-11-20 05:28:50,007 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:50,009 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:50,009 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:50,009 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:7 [2019-11-20 05:28:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:28:50,049 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:28:50,165 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:50,165 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2019-11-20 05:28:50,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:28:50,166 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:50,169 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:50,169 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:50,169 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:7 [2019-11-20 05:28:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 05:28:50,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [712494539] [2019-11-20 05:28:50,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:28:50,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 15 [2019-11-20 05:28:50,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214140707] [2019-11-20 05:28:50,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 05:28:50,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:28:50,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 05:28:50,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2019-11-20 05:28:50,222 INFO L87 Difference]: Start difference. First operand 343 states and 366 transitions. Second operand 16 states. [2019-11-20 05:28:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:28:52,050 INFO L93 Difference]: Finished difference Result 377 states and 400 transitions. [2019-11-20 05:28:52,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 05:28:52,052 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2019-11-20 05:28:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:28:52,054 INFO L225 Difference]: With dead ends: 377 [2019-11-20 05:28:52,054 INFO L226 Difference]: Without dead ends: 377 [2019-11-20 05:28:52,054 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2019-11-20 05:28:52,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2019-11-20 05:28:52,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 364. [2019-11-20 05:28:52,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-11-20 05:28:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 391 transitions. [2019-11-20 05:28:52,061 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 391 transitions. Word has length 53 [2019-11-20 05:28:52,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:28:52,062 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 391 transitions. [2019-11-20 05:28:52,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 05:28:52,062 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 391 transitions. [2019-11-20 05:28:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-20 05:28:52,062 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:28:52,062 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:52,266 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:52,267 INFO L410 AbstractCegarLoop]: === Iteration 23 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:28:52,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:28:52,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1919135097, now seen corresponding path program 1 times [2019-11-20 05:28:52,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:28:52,267 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1393052811] [2019-11-20 05:28:52,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:28:52,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-20 05:28:52,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:28:52,533 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:28:52,533 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:52,542 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:52,545 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:28:52,545 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:52,556 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:52,557 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:52,557 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:30, output treesize:3 [2019-11-20 05:28:52,783 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2019-11-20 05:28:52,783 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:52,798 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:52,799 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2019-11-20 05:28:52,800 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:28:52,811 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:52,812 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:28:52,812 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:50, output treesize:16 [2019-11-20 05:28:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:28:52,956 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:28:53,410 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:28:53,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:28:53,433 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2019-11-20 05:28:53,434 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:28:53,446 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2019-11-20 05:28:53,446 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:28:53,458 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:53,458 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2019-11-20 05:28:53,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:28:53,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:28:53,459 INFO L496 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 05:28:53,543 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:28:53,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:28:53,544 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2019-11-20 05:28:53,544 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:93, output treesize:93 [2019-11-20 05:28:53,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:28:53,884 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2019-11-20 05:28:53,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:28:54,249 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2019-11-20 05:28:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 05:28:54,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1393052811] [2019-11-20 05:28:54,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:28:54,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 16 [2019-11-20 05:28:54,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277177018] [2019-11-20 05:28:54,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-20 05:28:54,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:28:54,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-20 05:28:54,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2019-11-20 05:28:54,292 INFO L87 Difference]: Start difference. First operand 364 states and 391 transitions. Second operand 17 states. [2019-11-20 05:28:59,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:28:59,692 INFO L93 Difference]: Finished difference Result 386 states and 407 transitions. [2019-11-20 05:28:59,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 05:28:59,693 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 53 [2019-11-20 05:28:59,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:28:59,695 INFO L225 Difference]: With dead ends: 386 [2019-11-20 05:28:59,695 INFO L226 Difference]: Without dead ends: 386 [2019-11-20 05:28:59,695 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2019-11-20 05:28:59,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2019-11-20 05:28:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 362. [2019-11-20 05:28:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2019-11-20 05:28:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 384 transitions. [2019-11-20 05:28:59,702 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 384 transitions. Word has length 53 [2019-11-20 05:28:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:28:59,703 INFO L462 AbstractCegarLoop]: Abstraction has 362 states and 384 transitions. [2019-11-20 05:28:59,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-20 05:28:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 384 transitions. [2019-11-20 05:28:59,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-20 05:28:59,704 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:28:59,704 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:59,904 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:28:59,904 INFO L410 AbstractCegarLoop]: === Iteration 24 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:28:59,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:28:59,905 INFO L82 PathProgramCache]: Analyzing trace with hash -353390308, now seen corresponding path program 1 times [2019-11-20 05:28:59,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:28:59,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [993541740] [2019-11-20 05:28:59,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 25 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:29:00,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-20 05:29:00,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:29:00,236 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:29:00,236 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:00,249 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:00,253 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:29:00,253 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:00,263 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:00,264 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:29:00,264 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:30, output treesize:3 [2019-11-20 05:29:00,513 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:00,514 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 48 [2019-11-20 05:29:00,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:00,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:00,515 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:29:00,532 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:00,541 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:00,541 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2019-11-20 05:29:00,541 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:00,545 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:00,545 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:29:00,545 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:61, output treesize:7 [2019-11-20 05:29:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:00,575 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:29:01,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 05:29:01,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [993541740] [2019-11-20 05:29:01,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:29:01,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 12] imperfect sequences [] total 22 [2019-11-20 05:29:01,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222149837] [2019-11-20 05:29:01,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-20 05:29:01,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:29:01,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-20 05:29:01,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-11-20 05:29:01,071 INFO L87 Difference]: Start difference. First operand 362 states and 384 transitions. Second operand 22 states. [2019-11-20 05:29:03,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:29:03,891 INFO L93 Difference]: Finished difference Result 381 states and 401 transitions. [2019-11-20 05:29:03,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 05:29:03,892 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 57 [2019-11-20 05:29:03,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:29:03,894 INFO L225 Difference]: With dead ends: 381 [2019-11-20 05:29:03,894 INFO L226 Difference]: Without dead ends: 381 [2019-11-20 05:29:03,895 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2019-11-20 05:29:03,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2019-11-20 05:29:03,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 359. [2019-11-20 05:29:03,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2019-11-20 05:29:03,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 378 transitions. [2019-11-20 05:29:03,901 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 378 transitions. Word has length 57 [2019-11-20 05:29:03,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:29:03,902 INFO L462 AbstractCegarLoop]: Abstraction has 359 states and 378 transitions. [2019-11-20 05:29:03,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-20 05:29:03,902 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 378 transitions. [2019-11-20 05:29:03,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-20 05:29:03,902 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:29:03,902 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:29:04,103 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:04,104 INFO L410 AbstractCegarLoop]: === Iteration 25 === [merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2019-11-20 05:29:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:29:04,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1653517031, now seen corresponding path program 1 times [2019-11-20 05:29:04,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:29:04,105 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1821901590] [2019-11-20 05:29:04,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79988b12-5b0d-4539-af29-cb7878f1d7e1/bin/uautomizer/cvc4 Starting monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:29:04,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-20 05:29:04,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:29:04,598 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 05:29:04,598 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,600 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:04,600 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,600 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:29:04,632 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:04,632 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-11-20 05:29:04,633 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,666 INFO L567 ElimStorePlain]: treesize reduction 14, result has 56.3 percent of original size [2019-11-20 05:29:04,667 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,667 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:18 [2019-11-20 05:29:04,693 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:29:04,693 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,703 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:04,703 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,703 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:30 [2019-11-20 05:29:04,722 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:29:04,723 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2019-11-20 05:29:04,723 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,735 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:04,736 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,736 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:28 [2019-11-20 05:29:04,793 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:04,793 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 89 [2019-11-20 05:29:04,793 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,835 INFO L567 ElimStorePlain]: treesize reduction 40, result has 51.8 percent of original size [2019-11-20 05:29:04,835 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,835 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:43 [2019-11-20 05:29:04,864 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2019-11-20 05:29:04,865 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,883 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:04,883 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,883 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2019-11-20 05:29:04,928 INFO L343 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2019-11-20 05:29:04,928 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 31 [2019-11-20 05:29:04,928 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,948 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:04,948 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:29:04,949 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:52 [2019-11-20 05:29:05,042 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:05,042 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 90 [2019-11-20 05:29:05,042 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:05,124 INFO L567 ElimStorePlain]: treesize reduction 54, result has 53.4 percent of original size [2019-11-20 05:29:05,124 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 05:29:05,124 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:62 [2019-11-20 05:29:05,216 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:05,216 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 78 [2019-11-20 05:29:05,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:05,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:05,218 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:29:05,336 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2019-11-20 05:29:05,336 INFO L567 ElimStorePlain]: treesize reduction 28, result has 74.1 percent of original size [2019-11-20 05:29:05,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:05,337 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 05:29:05,337 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:77, output treesize:91 [2019-11-20 05:29:05,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:05,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:05,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:05,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:05,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:05,404 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_129|], 12=[|v_#memory_$Pointer$.base_142|]} [2019-11-20 05:29:05,420 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 101 [2019-11-20 05:29:05,420 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:05,450 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 105 [2019-11-20 05:29:05,450 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:05,483 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 91 [2019-11-20 05:29:05,483 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:05,862 WARN L191 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2019-11-20 05:29:05,863 INFO L567 ElimStorePlain]: treesize reduction 26, result has 91.3 percent of original size [2019-11-20 05:29:05,878 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:29:05,909 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:05,910 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 80 [2019-11-20 05:29:05,910 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:05,928 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:29:06,017 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:06,017 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 105 treesize of output 153 [2019-11-20 05:29:06,018 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:06,025 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:29:06,064 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:06,064 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 117 [2019-11-20 05:29:06,065 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:06,358 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-11-20 05:29:06,358 INFO L567 ElimStorePlain]: treesize reduction 140, result has 66.7 percent of original size [2019-11-20 05:29:06,359 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 3 xjuncts. [2019-11-20 05:29:06,359 INFO L221 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:310, output treesize:312 [2019-11-20 05:29:06,692 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-11-20 05:29:06,885 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-20 05:29:07,153 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-11-20 05:29:07,343 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-20 05:29:08,333 WARN L191 SmtUtils]: Spent 898.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-11-20 05:29:08,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:08,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:08,431 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 82 [2019-11-20 05:29:08,432 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:08,569 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2019-11-20 05:29:08,569 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:08,579 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 111 [2019-11-20 05:29:08,580 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:08,702 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2019-11-20 05:29:08,702 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:08,711 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2019-11-20 05:29:08,712 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:08,843 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-11-20 05:29:08,844 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:08,845 INFO L496 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 3 xjuncts. [2019-11-20 05:29:08,845 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 9 variables, input treesize:295, output treesize:262 [2019-11-20 05:29:09,509 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2019-11-20 05:29:09,523 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,534 INFO L392 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|], 10=[v_prenex_25]} [2019-11-20 05:29:09,556 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:09,557 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 58 [2019-11-20 05:29:09,557 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,560 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,560 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:29:09,731 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-11-20 05:29:09,731 INFO L567 ElimStorePlain]: treesize reduction 12, result has 92.8 percent of original size [2019-11-20 05:29:09,788 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:09,788 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 120 treesize of output 118 [2019-11-20 05:29:09,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:09,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:09,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:09,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:09,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:09,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:09,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:09,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:09,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:09,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:09,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:09,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:09,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,801 INFO L496 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 05:29:09,934 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-11-20 05:29:09,934 INFO L567 ElimStorePlain]: treesize reduction 27, result has 78.6 percent of original size [2019-11-20 05:29:09,934 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:29:09,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,936 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:29:09,938 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 12 dim-0 vars, and 2 xjuncts. [2019-11-20 05:29:09,938 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:212, output treesize:181 [2019-11-20 05:29:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:10,205 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:29:11,730 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:11,731 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:152) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) 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 05:29:11,734 INFO L168 Benchmark]: Toolchain (without parser) took 90634.59 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 315.6 MB). Free memory was 940.7 MB in the beginning and 1.0 GB in the end (delta: -75.7 MB). Peak memory consumption was 240.0 MB. Max. memory is 11.5 GB. [2019-11-20 05:29:11,734 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:29:11,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 562.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-20 05:29:11,734 INFO L168 Benchmark]: Boogie Preprocessor took 89.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:29:11,734 INFO L168 Benchmark]: RCFGBuilder took 1531.12 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: 105.2 MB). Peak memory consumption was 105.2 MB. Max. memory is 11.5 GB. [2019-11-20 05:29:11,735 INFO L168 Benchmark]: TraceAbstraction took 88448.28 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 175.6 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -10.0 MB). Peak memory consumption was 165.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:29:11,736 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 562.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 89.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1531.12 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: 105.2 MB). Peak memory consumption was 105.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 88448.28 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 175.6 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -10.0 MB). Peak memory consumption was 165.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: incompatible size de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: incompatible size: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...