./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_append_equal.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_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_append_equal.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/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 a4f285607323e922caa9bbc912c8526475badf88 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 08:56:59,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 08:56:59,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 08:56:59,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 08:56:59,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 08:56:59,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 08:56:59,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 08:56:59,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 08:56:59,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 08:56:59,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 08:56:59,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 08:56:59,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 08:56:59,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 08:56:59,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 08:56:59,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 08:56:59,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 08:56:59,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 08:56:59,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 08:56:59,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 08:56:59,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 08:56:59,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 08:56:59,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 08:56:59,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 08:56:59,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 08:56:59,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 08:56:59,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 08:56:59,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 08:56:59,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 08:56:59,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 08:56:59,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 08:56:59,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 08:56:59,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 08:56:59,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 08:56:59,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 08:56:59,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 08:56:59,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 08:56:59,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 08:56:59,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 08:56:59,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 08:56:59,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 08:56:59,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 08:56:59,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 08:56:59,601 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 08:56:59,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 08:56:59,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 08:56:59,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 08:56:59,613 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 08:56:59,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 08:56:59,613 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 08:56:59,614 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 08:56:59,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 08:56:59,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 08:56:59,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 08:56:59,614 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 08:56:59,615 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 08:56:59,615 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 08:56:59,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 08:56:59,615 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 08:56:59,616 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 08:56:59,616 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 08:56:59,616 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 08:56:59,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 08:56:59,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 08:56:59,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 08:56:59,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 08:56:59,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 08:56:59,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 08:56:59,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 08:56:59,619 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 08:56:59,619 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 08:56:59,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 08:56:59,620 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_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/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 -> a4f285607323e922caa9bbc912c8526475badf88 [2019-11-20 08:56:59,794 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 08:56:59,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 08:56:59,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 08:56:59,812 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 08:56:59,812 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 08:56:59,813 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/bin/uautomizer/../../sv-benchmarks/c/list-simple/dll2n_append_equal.i [2019-11-20 08:56:59,877 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/bin/uautomizer/data/bc4cbd69a/af00d1e681844d90a097b77bbd1227ae/FLAG881aad7f4 [2019-11-20 08:57:00,316 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 08:57:00,317 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/sv-benchmarks/c/list-simple/dll2n_append_equal.i [2019-11-20 08:57:00,328 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/bin/uautomizer/data/bc4cbd69a/af00d1e681844d90a097b77bbd1227ae/FLAG881aad7f4 [2019-11-20 08:57:00,671 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/bin/uautomizer/data/bc4cbd69a/af00d1e681844d90a097b77bbd1227ae [2019-11-20 08:57:00,673 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 08:57:00,674 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 08:57:00,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 08:57:00,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 08:57:00,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 08:57:00,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:57:00" (1/1) ... [2019-11-20 08:57:00,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c229e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:00, skipping insertion in model container [2019-11-20 08:57:00,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:57:00" (1/1) ... [2019-11-20 08:57:00,688 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 08:57:00,735 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 08:57:01,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:57:01,199 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 08:57:01,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:57:01,319 INFO L192 MainTranslator]: Completed translation [2019-11-20 08:57:01,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:01 WrapperNode [2019-11-20 08:57:01,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 08:57:01,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 08:57:01,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 08:57:01,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 08:57:01,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:01" (1/1) ... [2019-11-20 08:57:01,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:01" (1/1) ... [2019-11-20 08:57:01,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:01" (1/1) ... [2019-11-20 08:57:01,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:01" (1/1) ... [2019-11-20 08:57:01,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:01" (1/1) ... [2019-11-20 08:57:01,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:01" (1/1) ... [2019-11-20 08:57:01,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:01" (1/1) ... [2019-11-20 08:57:01,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 08:57:01,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 08:57:01,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 08:57:01,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 08:57:01,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/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 08:57:01,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 08:57:01,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 08:57:01,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 08:57:01,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 08:57:01,498 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-20 08:57:01,498 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-20 08:57:01,498 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-11-20 08:57:01,498 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-11-20 08:57:01,498 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2019-11-20 08:57:01,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 08:57:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 08:57:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 08:57:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 08:57:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 08:57:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 08:57:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 08:57:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 08:57:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 08:57:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 08:57:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 08:57:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 08:57:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 08:57:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 08:57:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 08:57:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 08:57:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 08:57:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 08:57:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 08:57:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 08:57:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 08:57:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 08:57:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 08:57:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 08:57:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 08:57:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 08:57:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 08:57:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 08:57:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 08:57:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 08:57:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 08:57:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 08:57:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 08:57:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 08:57:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 08:57:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 08:57:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 08:57:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 08:57:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 08:57:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 08:57:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 08:57:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 08:57:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 08:57:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 08:57:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 08:57:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 08:57:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 08:57:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 08:57:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 08:57:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 08:57:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 08:57:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 08:57:01,506 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 08:57:01,506 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 08:57:01,506 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 08:57:01,506 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 08:57:01,506 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 08:57:01,506 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 08:57:01,506 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-20 08:57:01,506 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 08:57:01,507 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 08:57:01,507 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 08:57:01,507 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 08:57:01,507 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 08:57:01,507 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 08:57:01,507 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 08:57:01,507 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 08:57:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 08:57:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 08:57:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 08:57:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 08:57:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 08:57:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 08:57:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 08:57:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 08:57:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 08:57:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 08:57:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 08:57:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 08:57:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 08:57:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 08:57:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 08:57:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 08:57:01,510 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 08:57:01,510 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 08:57:01,510 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 08:57:01,510 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 08:57:01,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 08:57:01,510 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 08:57:01,510 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 08:57:01,510 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 08:57:01,510 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 08:57:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 08:57:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 08:57:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 08:57:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 08:57:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 08:57:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 08:57:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 08:57:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 08:57:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 08:57:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 08:57:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 08:57:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 08:57:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 08:57:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 08:57:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 08:57:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-20 08:57:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-20 08:57:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 08:57:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 08:57:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 08:57:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-11-20 08:57:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-11-20 08:57:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 08:57:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 08:57:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2019-11-20 08:57:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 08:57:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 08:57:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 08:57:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 08:57:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 08:57:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 08:57:01,908 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-20 08:57:02,385 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 08:57:02,385 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 08:57:02,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:57:02 BoogieIcfgContainer [2019-11-20 08:57:02,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 08:57:02,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 08:57:02,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 08:57:02,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 08:57:02,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:57:00" (1/3) ... [2019-11-20 08:57:02,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f173c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:57:02, skipping insertion in model container [2019-11-20 08:57:02,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:01" (2/3) ... [2019-11-20 08:57:02,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f173c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:57:02, skipping insertion in model container [2019-11-20 08:57:02,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:57:02" (3/3) ... [2019-11-20 08:57:02,393 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_append_equal.i [2019-11-20 08:57:02,401 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 08:57:02,407 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 40 error locations. [2019-11-20 08:57:02,415 INFO L249 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2019-11-20 08:57:02,432 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 08:57:02,432 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 08:57:02,433 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 08:57:02,433 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 08:57:02,433 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 08:57:02,433 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 08:57:02,433 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 08:57:02,433 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 08:57:02,450 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2019-11-20 08:57:02,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 08:57:02,457 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:57:02,458 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:57:02,458 INFO L410 AbstractCegarLoop]: === Iteration 1 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_appendErr7REQUIRES_VIOLATION, dll_appendErr6REQUIRES_VIOLATION, dll_appendErr5REQUIRES_VIOLATION, dll_appendErr9REQUIRES_VIOLATION, dll_appendErr8REQUIRES_VIOLATION, dll_appendErr12REQUIRES_VIOLATION, dll_appendErr1REQUIRES_VIOLATION, dll_appendErr11REQUIRES_VIOLATION, dll_appendErr0REQUIRES_VIOLATION, dll_appendErr10REQUIRES_VIOLATION, dll_appendErr4REQUIRES_VIOLATION, dll_appendErr3REQUIRES_VIOLATION, dll_appendErr13REQUIRES_VIOLATION, dll_appendErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 08:57:02,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:57:02,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1549171442, now seen corresponding path program 1 times [2019-11-20 08:57:02,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:57:02,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [579477969] [2019-11-20 08:57:02,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/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 08:57:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:57:02,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 08:57:02,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:57:02,816 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 08:57:02,816 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:57:02,825 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:57:02,825 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:57:02,825 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 08:57:02,835 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 08:57:02,835 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:57:02,856 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 08:57:02,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [579477969] [2019-11-20 08:57:02,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:57:02,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 08:57:02,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467930613] [2019-11-20 08:57:02,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 08:57:02,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:57:02,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 08:57:02,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 08:57:02,885 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 3 states. [2019-11-20 08:57:03,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:57:03,109 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2019-11-20 08:57:03,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 08:57:03,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-20 08:57:03,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:57:03,121 INFO L225 Difference]: With dead ends: 110 [2019-11-20 08:57:03,121 INFO L226 Difference]: Without dead ends: 103 [2019-11-20 08:57:03,123 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 08:57:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-20 08:57:03,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2019-11-20 08:57:03,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-20 08:57:03,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2019-11-20 08:57:03,197 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 13 [2019-11-20 08:57:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:57:03,197 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2019-11-20 08:57:03,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 08:57:03,198 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2019-11-20 08:57:03,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 08:57:03,198 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:57:03,199 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:57:03,412 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:57:03,412 INFO L410 AbstractCegarLoop]: === Iteration 2 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_appendErr7REQUIRES_VIOLATION, dll_appendErr6REQUIRES_VIOLATION, dll_appendErr5REQUIRES_VIOLATION, dll_appendErr9REQUIRES_VIOLATION, dll_appendErr8REQUIRES_VIOLATION, dll_appendErr12REQUIRES_VIOLATION, dll_appendErr1REQUIRES_VIOLATION, dll_appendErr11REQUIRES_VIOLATION, dll_appendErr0REQUIRES_VIOLATION, dll_appendErr10REQUIRES_VIOLATION, dll_appendErr4REQUIRES_VIOLATION, dll_appendErr3REQUIRES_VIOLATION, dll_appendErr13REQUIRES_VIOLATION, dll_appendErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 08:57:03,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:57:03,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1549171443, now seen corresponding path program 1 times [2019-11-20 08:57:03,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:57:03,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1046635239] [2019-11-20 08:57:03,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/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 08:57:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:57:03,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 08:57:03,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:57:03,623 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 08:57:03,623 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:57:03,634 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:57:03,634 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:57:03,634 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 08:57:03,644 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 08:57:03,644 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:57:03,681 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 08:57:03,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1046635239] [2019-11-20 08:57:03,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:57:03,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 08:57:03,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031208538] [2019-11-20 08:57:03,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 08:57:03,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:57:03,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 08:57:03,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 08:57:03,685 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand 4 states. [2019-11-20 08:57:04,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:57:04,050 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2019-11-20 08:57:04,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 08:57:04,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-20 08:57:04,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:57:04,053 INFO L225 Difference]: With dead ends: 100 [2019-11-20 08:57:04,053 INFO L226 Difference]: Without dead ends: 100 [2019-11-20 08:57:04,054 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 08:57:04,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-11-20 08:57:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2019-11-20 08:57:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-20 08:57:04,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2019-11-20 08:57:04,065 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 13 [2019-11-20 08:57:04,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:57:04,065 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2019-11-20 08:57:04,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 08:57:04,066 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2019-11-20 08:57:04,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 08:57:04,067 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:57:04,067 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] [2019-11-20 08:57:04,278 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:57:04,278 INFO L410 AbstractCegarLoop]: === Iteration 3 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_appendErr7REQUIRES_VIOLATION, dll_appendErr6REQUIRES_VIOLATION, dll_appendErr5REQUIRES_VIOLATION, dll_appendErr9REQUIRES_VIOLATION, dll_appendErr8REQUIRES_VIOLATION, dll_appendErr12REQUIRES_VIOLATION, dll_appendErr1REQUIRES_VIOLATION, dll_appendErr11REQUIRES_VIOLATION, dll_appendErr0REQUIRES_VIOLATION, dll_appendErr10REQUIRES_VIOLATION, dll_appendErr4REQUIRES_VIOLATION, dll_appendErr3REQUIRES_VIOLATION, dll_appendErr13REQUIRES_VIOLATION, dll_appendErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 08:57:04,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:57:04,279 INFO L82 PathProgramCache]: Analyzing trace with hash -362417140, now seen corresponding path program 1 times [2019-11-20 08:57:04,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:57:04,279 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [418448331] [2019-11-20 08:57:04,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/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 08:57:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:57:04,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 08:57:04,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:57:04,546 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 08:57:04,546 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:57:04,549 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:57:04,550 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:57:04,550 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 08:57:04,588 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 08:57:04,589 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:57:04,685 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 08:57:04,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [418448331] [2019-11-20 08:57:04,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:57:04,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 08:57:04,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977649672] [2019-11-20 08:57:04,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 08:57:04,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:57:04,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 08:57:04,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 08:57:04,687 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand 6 states. [2019-11-20 08:57:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:57:05,164 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2019-11-20 08:57:05,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 08:57:05,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-11-20 08:57:05,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:57:05,167 INFO L225 Difference]: With dead ends: 103 [2019-11-20 08:57:05,168 INFO L226 Difference]: Without dead ends: 103 [2019-11-20 08:57:05,168 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 08:57:05,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-20 08:57:05,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 98. [2019-11-20 08:57:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-20 08:57:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2019-11-20 08:57:05,178 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 20 [2019-11-20 08:57:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:57:05,178 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2019-11-20 08:57:05,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 08:57:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2019-11-20 08:57:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 08:57:05,180 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:57:05,180 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] [2019-11-20 08:57:05,385 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:57:05,386 INFO L410 AbstractCegarLoop]: === Iteration 4 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_appendErr7REQUIRES_VIOLATION, dll_appendErr6REQUIRES_VIOLATION, dll_appendErr5REQUIRES_VIOLATION, dll_appendErr9REQUIRES_VIOLATION, dll_appendErr8REQUIRES_VIOLATION, dll_appendErr12REQUIRES_VIOLATION, dll_appendErr1REQUIRES_VIOLATION, dll_appendErr11REQUIRES_VIOLATION, dll_appendErr0REQUIRES_VIOLATION, dll_appendErr10REQUIRES_VIOLATION, dll_appendErr4REQUIRES_VIOLATION, dll_appendErr3REQUIRES_VIOLATION, dll_appendErr13REQUIRES_VIOLATION, dll_appendErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 08:57:05,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:57:05,386 INFO L82 PathProgramCache]: Analyzing trace with hash -362417139, now seen corresponding path program 1 times [2019-11-20 08:57:05,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:57:05,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2097046842] [2019-11-20 08:57:05,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/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 08:57:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:57:05,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 08:57:05,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:57:05,633 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 08:57:05,633 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:57:05,647 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:57:05,648 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:57:05,648 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 08:57:05,704 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 08:57:05,704 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:57:06,084 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 08:57:06,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2097046842] [2019-11-20 08:57:06,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:57:06,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-20 08:57:06,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638768619] [2019-11-20 08:57:06,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 08:57:06,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:57:06,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 08:57:06,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-20 08:57:06,086 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand 10 states. [2019-11-20 08:57:06,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:57:06,981 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2019-11-20 08:57:06,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 08:57:06,982 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-11-20 08:57:06,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:57:06,983 INFO L225 Difference]: With dead ends: 101 [2019-11-20 08:57:06,983 INFO L226 Difference]: Without dead ends: 101 [2019-11-20 08:57:06,984 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-20 08:57:06,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-20 08:57:06,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2019-11-20 08:57:06,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-11-20 08:57:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2019-11-20 08:57:06,992 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 20 [2019-11-20 08:57:06,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:57:06,993 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2019-11-20 08:57:06,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 08:57:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2019-11-20 08:57:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 08:57:06,994 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:57:06,994 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] [2019-11-20 08:57:07,205 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:57:07,206 INFO L410 AbstractCegarLoop]: === Iteration 5 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_appendErr7REQUIRES_VIOLATION, dll_appendErr6REQUIRES_VIOLATION, dll_appendErr5REQUIRES_VIOLATION, dll_appendErr9REQUIRES_VIOLATION, dll_appendErr8REQUIRES_VIOLATION, dll_appendErr12REQUIRES_VIOLATION, dll_appendErr1REQUIRES_VIOLATION, dll_appendErr11REQUIRES_VIOLATION, dll_appendErr0REQUIRES_VIOLATION, dll_appendErr10REQUIRES_VIOLATION, dll_appendErr4REQUIRES_VIOLATION, dll_appendErr3REQUIRES_VIOLATION, dll_appendErr13REQUIRES_VIOLATION, dll_appendErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 08:57:07,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:57:07,206 INFO L82 PathProgramCache]: Analyzing trace with hash 778892662, now seen corresponding path program 1 times [2019-11-20 08:57:07,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:57:07,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1595406547] [2019-11-20 08:57:07,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/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 08:57:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:57:07,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 08:57:07,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:57:07,387 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 08:57:07,388 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:57:07,398 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 08:57:07,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1595406547] [2019-11-20 08:57:07,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:57:07,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 08:57:07,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910289197] [2019-11-20 08:57:07,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 08:57:07,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:57:07,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 08:57:07,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 08:57:07,400 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand 3 states. [2019-11-20 08:57:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:57:07,446 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2019-11-20 08:57:07,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 08:57:07,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-20 08:57:07,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:57:07,453 INFO L225 Difference]: With dead ends: 106 [2019-11-20 08:57:07,453 INFO L226 Difference]: Without dead ends: 106 [2019-11-20 08:57:07,453 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 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 08:57:07,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-11-20 08:57:07,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2019-11-20 08:57:07,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-20 08:57:07,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2019-11-20 08:57:07,467 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 23 [2019-11-20 08:57:07,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:57:07,468 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 110 transitions. [2019-11-20 08:57:07,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 08:57:07,468 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 110 transitions. [2019-11-20 08:57:07,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-20 08:57:07,469 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:57:07,469 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] [2019-11-20 08:57:07,680 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:57:07,680 INFO L410 AbstractCegarLoop]: === Iteration 6 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_appendErr7REQUIRES_VIOLATION, dll_appendErr6REQUIRES_VIOLATION, dll_appendErr5REQUIRES_VIOLATION, dll_appendErr9REQUIRES_VIOLATION, dll_appendErr8REQUIRES_VIOLATION, dll_appendErr12REQUIRES_VIOLATION, dll_appendErr1REQUIRES_VIOLATION, dll_appendErr11REQUIRES_VIOLATION, dll_appendErr0REQUIRES_VIOLATION, dll_appendErr10REQUIRES_VIOLATION, dll_appendErr4REQUIRES_VIOLATION, dll_appendErr3REQUIRES_VIOLATION, dll_appendErr13REQUIRES_VIOLATION, dll_appendErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 08:57:07,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:57:07,681 INFO L82 PathProgramCache]: Analyzing trace with hash 229741034, now seen corresponding path program 1 times [2019-11-20 08:57:07,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:57:07,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1595896693] [2019-11-20 08:57:07,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/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 08:57:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:57:07,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 08:57:07,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:57:07,948 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 08:57:07,948 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:57:08,024 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 08:57:08,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1595896693] [2019-11-20 08:57:08,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:57:08,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-20 08:57:08,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748266594] [2019-11-20 08:57:08,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 08:57:08,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:57:08,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 08:57:08,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-20 08:57:08,026 INFO L87 Difference]: Start difference. First operand 102 states and 110 transitions. Second operand 7 states. [2019-11-20 08:57:08,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:57:08,087 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2019-11-20 08:57:08,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 08:57:08,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2019-11-20 08:57:08,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:57:08,089 INFO L225 Difference]: With dead ends: 106 [2019-11-20 08:57:08,089 INFO L226 Difference]: Without dead ends: 103 [2019-11-20 08:57:08,089 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-20 08:57:08,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-20 08:57:08,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2019-11-20 08:57:08,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-20 08:57:08,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2019-11-20 08:57:08,105 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 26 [2019-11-20 08:57:08,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:57:08,106 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2019-11-20 08:57:08,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 08:57:08,106 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2019-11-20 08:57:08,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-20 08:57:08,109 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:57:08,109 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:57:08,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:57:08,313 INFO L410 AbstractCegarLoop]: === Iteration 7 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_appendErr7REQUIRES_VIOLATION, dll_appendErr6REQUIRES_VIOLATION, dll_appendErr5REQUIRES_VIOLATION, dll_appendErr9REQUIRES_VIOLATION, dll_appendErr8REQUIRES_VIOLATION, dll_appendErr12REQUIRES_VIOLATION, dll_appendErr1REQUIRES_VIOLATION, dll_appendErr11REQUIRES_VIOLATION, dll_appendErr0REQUIRES_VIOLATION, dll_appendErr10REQUIRES_VIOLATION, dll_appendErr4REQUIRES_VIOLATION, dll_appendErr3REQUIRES_VIOLATION, dll_appendErr13REQUIRES_VIOLATION, dll_appendErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 08:57:08,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:57:08,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1317126616, now seen corresponding path program 1 times [2019-11-20 08:57:08,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:57:08,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1501696846] [2019-11-20 08:57:08,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/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 08:57:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:57:08,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 08:57:08,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:57:08,577 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 08:57:08,577 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:57:08,579 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:57:08,579 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:57:08,579 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 08:57:08,687 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:57:08,687 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 08:57:08,688 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:57:08,705 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 08:57:08,706 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 08:57:08,706 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2019-11-20 08:57:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:57:08,722 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:57:08,907 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:57:08,908 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1501696846] [2019-11-20 08:57:08,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 08:57:08,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2019-11-20 08:57:08,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832113855] [2019-11-20 08:57:08,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 08:57:08,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:57:08,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 08:57:08,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-11-20 08:57:08,909 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand 10 states. [2019-11-20 08:57:38,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:57:38,035 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2019-11-20 08:57:38,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 08:57:38,036 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-11-20 08:57:38,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:57:38,037 INFO L225 Difference]: With dead ends: 122 [2019-11-20 08:57:38,037 INFO L226 Difference]: Without dead ends: 122 [2019-11-20 08:57:38,037 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2019-11-20 08:57:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-11-20 08:57:38,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2019-11-20 08:57:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-20 08:57:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2019-11-20 08:57:38,043 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 38 [2019-11-20 08:57:38,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:57:38,043 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2019-11-20 08:57:38,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 08:57:38,044 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2019-11-20 08:57:38,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-20 08:57:38,045 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:57:38,045 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:57:38,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:57:38,246 INFO L410 AbstractCegarLoop]: === Iteration 8 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_appendErr7REQUIRES_VIOLATION, dll_appendErr6REQUIRES_VIOLATION, dll_appendErr5REQUIRES_VIOLATION, dll_appendErr9REQUIRES_VIOLATION, dll_appendErr8REQUIRES_VIOLATION, dll_appendErr12REQUIRES_VIOLATION, dll_appendErr1REQUIRES_VIOLATION, dll_appendErr11REQUIRES_VIOLATION, dll_appendErr0REQUIRES_VIOLATION, dll_appendErr10REQUIRES_VIOLATION, dll_appendErr4REQUIRES_VIOLATION, dll_appendErr3REQUIRES_VIOLATION, dll_appendErr13REQUIRES_VIOLATION, dll_appendErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 08:57:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:57:38,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1317126617, now seen corresponding path program 1 times [2019-11-20 08:57:38,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:57:38,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [613905101] [2019-11-20 08:57:38,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/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 08:57:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:57:38,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-20 08:57:38,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:57:38,583 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 08:57:38,583 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:57:38,591 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:57:38,595 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 08:57:38,595 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:57:38,610 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:57:38,610 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:57:38,610 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 08:57:38,797 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:57:38,799 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 08:57:38,800 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:57:38,817 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:57:38,833 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:57:38,834 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 13 treesize of output 17 [2019-11-20 08:57:38,835 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:57:38,844 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:57:38,845 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 08:57:38,846 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:20 [2019-11-20 08:57:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:57:38,891 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:57:38,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:57:39,216 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:57:39,216 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:57:39,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:57:39,218 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:57:39,220 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:57:39,221 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:57:39,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:57:39,224 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:57:39,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:57:42,583 WARN L191 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2019-11-20 08:57:42,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:57:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:57:48,188 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [613905101] [2019-11-20 08:57:48,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 08:57:48,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2019-11-20 08:57:48,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117662141] [2019-11-20 08:57:48,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 08:57:48,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:57:48,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 08:57:48,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=262, Unknown=1, NotChecked=0, Total=306 [2019-11-20 08:57:48,191 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand 18 states. [2019-11-20 08:57:54,533 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv1 1) (select |c_#valid| c_node_create_~temp~0.base)) (= (_ bv0 32) c_node_create_~temp~0.offset) (exists ((|node_create_#t~malloc2.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |node_create_#t~malloc2.base|) (_ bv0 1)) (= |c_#length| (store |c_old(#length)| |node_create_#t~malloc2.base| (_ bv12 32))))) (= (bvadd (select |c_#length| c_node_create_~temp~0.base) (_ bv4294967284 32)) (_ bv0 32)) (forall ((v_dll_create_~head~0.base_BEFORE_CALL_6 (_ BitVec 32)) (|v_node_create_#t~malloc2.base_27| (_ BitVec 32)) (v_dll_create_~head~0.offset_BEFORE_CALL_4 (_ BitVec 32))) (let ((.cse0 (bvadd v_dll_create_~head~0.offset_BEFORE_CALL_4 (_ bv8 32))) (.cse1 (bvadd v_dll_create_~head~0.offset_BEFORE_CALL_4 (_ bv12 32)))) (or (not (= (select |c_#valid| |v_node_create_#t~malloc2.base_27|) (_ bv0 1))) (not (bvsle (_ bv0 32) .cse0)) (bvsle .cse1 (select (store |c_#length| |v_node_create_#t~malloc2.base_27| (_ bv12 32)) v_dll_create_~head~0.base_BEFORE_CALL_6)) (exists ((v_prenex_2 (_ BitVec 32))) (and (not (bvsle (bvadd v_dll_create_~head~0.offset_BEFORE_CALL_4 (_ bv12 32)) (select (store |c_old(#length)| v_prenex_2 (_ bv12 32)) v_dll_create_~head~0.base_BEFORE_CALL_6))) (= (_ bv0 1) (select |c_old(#valid)| v_prenex_2)))) (not (bvsle .cse0 .cse1)))))) is different from false [2019-11-20 08:58:16,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:58:16,608 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2019-11-20 08:58:16,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 08:58:16,617 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2019-11-20 08:58:16,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:58:16,619 INFO L225 Difference]: With dead ends: 120 [2019-11-20 08:58:16,619 INFO L226 Difference]: Without dead ends: 120 [2019-11-20 08:58:16,619 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=106, Invalid=546, Unknown=2, NotChecked=48, Total=702 [2019-11-20 08:58:16,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-11-20 08:58:16,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2019-11-20 08:58:16,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-20 08:58:16,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 107 transitions. [2019-11-20 08:58:16,625 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 107 transitions. Word has length 38 [2019-11-20 08:58:16,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:58:16,625 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 107 transitions. [2019-11-20 08:58:16,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 08:58:16,625 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 107 transitions. [2019-11-20 08:58:16,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-20 08:58:16,626 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:58:16,626 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-20 08:58:16,827 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:58:16,827 INFO L410 AbstractCegarLoop]: === Iteration 9 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_appendErr7REQUIRES_VIOLATION, dll_appendErr6REQUIRES_VIOLATION, dll_appendErr5REQUIRES_VIOLATION, dll_appendErr9REQUIRES_VIOLATION, dll_appendErr8REQUIRES_VIOLATION, dll_appendErr12REQUIRES_VIOLATION, dll_appendErr1REQUIRES_VIOLATION, dll_appendErr11REQUIRES_VIOLATION, dll_appendErr0REQUIRES_VIOLATION, dll_appendErr10REQUIRES_VIOLATION, dll_appendErr4REQUIRES_VIOLATION, dll_appendErr3REQUIRES_VIOLATION, dll_appendErr13REQUIRES_VIOLATION, dll_appendErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 08:58:16,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:58:16,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1644548680, now seen corresponding path program 1 times [2019-11-20 08:58:16,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:58:16,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [249533652] [2019-11-20 08:58:16,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/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 08:58:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:58:17,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 08:58:17,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:58:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:58:17,114 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:58:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-20 08:58:17,327 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [249533652] [2019-11-20 08:58:17,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 08:58:17,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-20 08:58:17,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14394297] [2019-11-20 08:58:17,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 08:58:17,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:58:17,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 08:58:17,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-20 08:58:17,329 INFO L87 Difference]: Start difference. First operand 100 states and 107 transitions. Second operand 9 states. [2019-11-20 08:58:17,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:58:17,586 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2019-11-20 08:58:17,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 08:58:17,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2019-11-20 08:58:17,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:58:17,588 INFO L225 Difference]: With dead ends: 112 [2019-11-20 08:58:17,588 INFO L226 Difference]: Without dead ends: 109 [2019-11-20 08:58:17,589 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-20 08:58:17,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-11-20 08:58:17,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 102. [2019-11-20 08:58:17,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-20 08:58:17,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2019-11-20 08:58:17,599 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 41 [2019-11-20 08:58:17,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:58:17,600 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2019-11-20 08:58:17,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 08:58:17,600 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2019-11-20 08:58:17,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-20 08:58:17,608 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:58:17,609 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-11-20 08:58:17,814 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:58:17,814 INFO L410 AbstractCegarLoop]: === Iteration 10 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_appendErr7REQUIRES_VIOLATION, dll_appendErr6REQUIRES_VIOLATION, dll_appendErr5REQUIRES_VIOLATION, dll_appendErr9REQUIRES_VIOLATION, dll_appendErr8REQUIRES_VIOLATION, dll_appendErr12REQUIRES_VIOLATION, dll_appendErr1REQUIRES_VIOLATION, dll_appendErr11REQUIRES_VIOLATION, dll_appendErr0REQUIRES_VIOLATION, dll_appendErr10REQUIRES_VIOLATION, dll_appendErr4REQUIRES_VIOLATION, dll_appendErr3REQUIRES_VIOLATION, dll_appendErr13REQUIRES_VIOLATION, dll_appendErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 08:58:17,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:58:17,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1506211286, now seen corresponding path program 2 times [2019-11-20 08:58:17,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:58:17,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2009487606] [2019-11-20 08:58:17,818 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/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 08:58:18,155 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 08:58:18,155 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 08:58:18,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 08:58:18,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:58:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 08:58:18,211 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:58:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-20 08:58:18,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2009487606] [2019-11-20 08:58:18,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 08:58:18,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-20 08:58:18,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275658046] [2019-11-20 08:58:18,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 08:58:18,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:58:18,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 08:58:18,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 08:58:18,339 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand 7 states. [2019-11-20 08:58:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:58:18,718 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2019-11-20 08:58:18,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 08:58:18,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-11-20 08:58:18,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:58:18,720 INFO L225 Difference]: With dead ends: 102 [2019-11-20 08:58:18,720 INFO L226 Difference]: Without dead ends: 102 [2019-11-20 08:58:18,721 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-20 08:58:18,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-11-20 08:58:18,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-11-20 08:58:18,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-20 08:58:18,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2019-11-20 08:58:18,725 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 56 [2019-11-20 08:58:18,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:58:18,728 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2019-11-20 08:58:18,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 08:58:18,729 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2019-11-20 08:58:18,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-20 08:58:18,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:58:18,731 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-11-20 08:58:18,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:58:18,937 INFO L410 AbstractCegarLoop]: === Iteration 11 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_appendErr7REQUIRES_VIOLATION, dll_appendErr6REQUIRES_VIOLATION, dll_appendErr5REQUIRES_VIOLATION, dll_appendErr9REQUIRES_VIOLATION, dll_appendErr8REQUIRES_VIOLATION, dll_appendErr12REQUIRES_VIOLATION, dll_appendErr1REQUIRES_VIOLATION, dll_appendErr11REQUIRES_VIOLATION, dll_appendErr0REQUIRES_VIOLATION, dll_appendErr10REQUIRES_VIOLATION, dll_appendErr4REQUIRES_VIOLATION, dll_appendErr3REQUIRES_VIOLATION, dll_appendErr13REQUIRES_VIOLATION, dll_appendErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 08:58:18,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:58:18,937 INFO L82 PathProgramCache]: Analyzing trace with hash -197334426, now seen corresponding path program 1 times [2019-11-20 08:58:18,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:58:18,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [645409612] [2019-11-20 08:58:18,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f01da3f-2fdc-4a8c-ab2c-1d9b814bd57c/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 08:58:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:58:19,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-20 08:58:19,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:58:19,525 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 08:58:19,526 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:58:19,530 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:58:19,531 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:58:19,531 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 08:58:19,810 INFO L343 Elim1Store]: treesize reduction 27, result has 57.1 percent of original size [2019-11-20 08:58:19,810 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 4 case distinctions, treesize of input 22 treesize of output 49 [2019-11-20 08:58:19,811 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:58:19,839 INFO L567 ElimStorePlain]: treesize reduction 17, result has 54.1 percent of original size [2019-11-20 08:58:19,839 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 08:58:19,840 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:20 [2019-11-20 08:58:20,026 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:58:20,026 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 17 treesize of output 50 [2019-11-20 08:58:20,027 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:58:20,054 INFO L567 ElimStorePlain]: treesize reduction 28, result has 41.7 percent of original size [2019-11-20 08:58:20,055 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 08:58:20,055 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:20 [2019-11-20 08:58:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 08:58:20,087 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:58:46,185 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:58:46,186 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 08:58:46,189 INFO L168 Benchmark]: Toolchain (without parser) took 105514.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.4 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -148.2 MB). Peak memory consumption was 43.1 MB. Max. memory is 11.5 GB. [2019-11-20 08:58:46,189 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:58:46,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 08:58:46,190 INFO L168 Benchmark]: Boogie Preprocessor took 92.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-20 08:58:46,190 INFO L168 Benchmark]: RCFGBuilder took 973.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 65.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 11.5 GB. [2019-11-20 08:58:46,191 INFO L168 Benchmark]: TraceAbstraction took 103800.45 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -44.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 11.5 GB. [2019-11-20 08:58:46,193 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 644.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 92.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 973.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 65.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 103800.45 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -44.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...