./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-examples/relax-1.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_e544d601-42bc-474c-a6a9-ee215bde51dc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-examples/relax-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/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 c75be524a4f1d004e59f9ab0d874b08a78bf36d3 .......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 09:31:09,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:31:09,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:31:09,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:31:09,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:31:09,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:31:09,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:31:09,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:31:09,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:31:09,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:31:09,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:31:09,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:31:09,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:31:09,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:31:09,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:31:09,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:31:09,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:31:09,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:31:09,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:31:09,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:31:09,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:31:09,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:31:09,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:31:09,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:31:09,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:31:09,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:31:09,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:31:09,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:31:09,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:31:09,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:31:09,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:31:09,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:31:09,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:31:09,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:31:09,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:31:09,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:31:09,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:31:09,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:31:09,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:31:09,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:31:09,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:31:09,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 09:31:09,673 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:31:09,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:31:09,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:31:09,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:31:09,687 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 09:31:09,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:31:09,688 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 09:31:09,688 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 09:31:09,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 09:31:09,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 09:31:09,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:31:09,689 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 09:31:09,689 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 09:31:09,690 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 09:31:09,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 09:31:09,690 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 09:31:09,690 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 09:31:09,691 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 09:31:09,691 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:31:09,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:31:09,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 09:31:09,692 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 09:31:09,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 09:31:09,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 09:31:09,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:31:09,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 09:31:09,693 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 09:31:09,693 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 09:31:09,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 09:31:09,694 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_e544d601-42bc-474c-a6a9-ee215bde51dc/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 -> c75be524a4f1d004e59f9ab0d874b08a78bf36d3 [2019-11-20 09:31:09,904 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:31:09,922 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:31:09,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:31:09,927 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:31:09,928 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:31:09,928 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/bin/uautomizer/../../sv-benchmarks/c/array-examples/relax-1.i [2019-11-20 09:31:10,002 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/bin/uautomizer/data/e0747fba9/5466cb4333904b05befa89e950e8b74e/FLAGaccd5d306 [2019-11-20 09:31:10,570 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:31:10,586 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/sv-benchmarks/c/array-examples/relax-1.i [2019-11-20 09:31:10,608 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/bin/uautomizer/data/e0747fba9/5466cb4333904b05befa89e950e8b74e/FLAGaccd5d306 [2019-11-20 09:31:10,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/bin/uautomizer/data/e0747fba9/5466cb4333904b05befa89e950e8b74e [2019-11-20 09:31:10,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:31:10,854 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 09:31:10,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:31:10,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:31:10,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:31:10,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:10" (1/1) ... [2019-11-20 09:31:10,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e04513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:10, skipping insertion in model container [2019-11-20 09:31:10,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:10" (1/1) ... [2019-11-20 09:31:10,876 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:31:10,939 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:31:11,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:31:11,551 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:31:11,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:31:11,713 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:31:11,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:11 WrapperNode [2019-11-20 09:31:11,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:31:11,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:31:11,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:31:11,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:31:11,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:11" (1/1) ... [2019-11-20 09:31:11,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:11" (1/1) ... [2019-11-20 09:31:11,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:11" (1/1) ... [2019-11-20 09:31:11,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:11" (1/1) ... [2019-11-20 09:31:11,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:11" (1/1) ... [2019-11-20 09:31:11,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:11" (1/1) ... [2019-11-20 09:31:11,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:11" (1/1) ... [2019-11-20 09:31:11,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:31:11,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:31:11,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:31:11,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:31:11,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/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 09:31:11,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 09:31:11,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:31:11,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-20 09:31:11,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 09:31:11,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 09:31:11,905 INFO L138 BoogieDeclarations]: Found implementation of procedure is_relaxed_prefix [2019-11-20 09:31:11,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 09:31:11,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-20 09:31:11,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-20 09:31:11,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 09:31:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 09:31:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-20 09:31:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 09:31:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 09:31:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 09:31:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 09:31:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 09:31:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 09:31:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 09:31:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 09:31:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 09:31:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 09:31:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 09:31:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 09:31:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 09:31:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 09:31:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 09:31:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 09:31:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 09:31:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 09:31:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 09:31:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 09:31:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 09:31:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 09:31:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 09:31:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 09:31:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 09:31:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 09:31:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 09:31:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 09:31:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 09:31:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 09:31:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 09:31:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 09:31:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 09:31:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 09:31:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 09:31:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 09:31:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 09:31:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 09:31:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 09:31:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 09:31:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 09:31:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 09:31:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 09:31:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 09:31:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 09:31:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 09:31:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 09:31:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 09:31:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 09:31:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 09:31:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 09:31:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 09:31:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 09:31:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 09:31:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 09:31:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 09:31:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-20 09:31:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 09:31:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 09:31:11,921 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 09:31:11,921 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 09:31:11,921 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 09:31:11,921 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 09:31:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 09:31:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 09:31:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 09:31:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 09:31:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 09:31:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 09:31:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 09:31:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 09:31:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 09:31:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 09:31:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 09:31:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 09:31:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 09:31:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 09:31:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 09:31:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 09:31:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 09:31:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 09:31:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 09:31:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 09:31:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 09:31:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 09:31:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 09:31:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 09:31:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 09:31:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 09:31:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 09:31:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 09:31:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 09:31:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 09:31:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 09:31:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 09:31:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 09:31:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 09:31:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 09:31:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 09:31:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 09:31:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 09:31:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 09:31:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure is_relaxed_prefix [2019-11-20 09:31:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 09:31:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 09:31:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 09:31:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 09:31:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 09:31:11,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 09:31:11,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:31:13,242 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:31:13,242 INFO L285 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-20 09:31:13,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:13 BoogieIcfgContainer [2019-11-20 09:31:13,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:31:13,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 09:31:13,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 09:31:13,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 09:31:13,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:31:10" (1/3) ... [2019-11-20 09:31:13,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716d5890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:13, skipping insertion in model container [2019-11-20 09:31:13,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:11" (2/3) ... [2019-11-20 09:31:13,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716d5890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:13, skipping insertion in model container [2019-11-20 09:31:13,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:13" (3/3) ... [2019-11-20 09:31:13,252 INFO L109 eAbstractionObserver]: Analyzing ICFG relax-1.i [2019-11-20 09:31:13,267 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 09:31:13,276 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 31 error locations. [2019-11-20 09:31:13,288 INFO L249 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2019-11-20 09:31:13,311 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 09:31:13,312 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 09:31:13,312 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 09:31:13,312 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 09:31:13,312 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 09:31:13,321 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 09:31:13,323 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 09:31:13,323 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 09:31:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2019-11-20 09:31:13,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 09:31:13,359 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:31:13,360 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:31:13,361 INFO L410 AbstractCegarLoop]: === Iteration 1 === [is_relaxed_prefixErr2REQUIRES_VIOLATION, is_relaxed_prefixErr3REQUIRES_VIOLATION, is_relaxed_prefixErr0REQUIRES_VIOLATION, is_relaxed_prefixErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-20 09:31:13,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:31:13,368 INFO L82 PathProgramCache]: Analyzing trace with hash 366527912, now seen corresponding path program 1 times [2019-11-20 09:31:13,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:31:13,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [499647689] [2019-11-20 09:31:13,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/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 09:31:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:31:13,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 09:31:13,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:31:13,798 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-20 09:31:13,799 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2019-11-20 09:31:13,800 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:13,820 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:13,822 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 09:31:13,822 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2019-11-20 09:31:13,937 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 09:31:13,943 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:31:14,034 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 09:31:14,035 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [499647689] [2019-11-20 09:31:14,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:31:14,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-20 09:31:14,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781201511] [2019-11-20 09:31:14,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 09:31:14,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:31:14,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 09:31:14,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-20 09:31:14,063 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 8 states. [2019-11-20 09:31:14,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:31:14,732 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2019-11-20 09:31:14,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 09:31:14,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-20 09:31:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:31:14,749 INFO L225 Difference]: With dead ends: 89 [2019-11-20 09:31:14,750 INFO L226 Difference]: Without dead ends: 85 [2019-11-20 09:31:14,755 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-20 09:31:14,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-20 09:31:14,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2019-11-20 09:31:14,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-11-20 09:31:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2019-11-20 09:31:14,848 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 11 [2019-11-20 09:31:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:31:14,848 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2019-11-20 09:31:14,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 09:31:14,849 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2019-11-20 09:31:14,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 09:31:14,850 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:31:14,850 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:31:15,059 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:31:15,060 INFO L410 AbstractCegarLoop]: === Iteration 2 === [is_relaxed_prefixErr2REQUIRES_VIOLATION, is_relaxed_prefixErr3REQUIRES_VIOLATION, is_relaxed_prefixErr0REQUIRES_VIOLATION, is_relaxed_prefixErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-20 09:31:15,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:31:15,061 INFO L82 PathProgramCache]: Analyzing trace with hash 366527913, now seen corresponding path program 1 times [2019-11-20 09:31:15,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:31:15,062 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1685341840] [2019-11-20 09:31:15,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/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 09:31:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:31:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:31:15,411 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 09:31:15,411 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 09:31:15,616 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:31:15,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:31:15 BoogieIcfgContainer [2019-11-20 09:31:15,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 09:31:15,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 09:31:15,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 09:31:15,659 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 09:31:15,660 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:13" (3/4) ... [2019-11-20 09:31:15,662 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 09:31:15,709 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e544d601-42bc-474c-a6a9-ee215bde51dc/bin/uautomizer/witness.graphml [2019-11-20 09:31:15,709 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 09:31:15,711 INFO L168 Benchmark]: Toolchain (without parser) took 4857.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 951.4 MB in the beginning and 954.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 157.0 MB. Max. memory is 11.5 GB. [2019-11-20 09:31:15,712 INFO L168 Benchmark]: CDTParser took 0.80 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 09:31:15,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 855.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-20 09:31:15,714 INFO L168 Benchmark]: Boogie Preprocessor took 116.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:31:15,715 INFO L168 Benchmark]: RCFGBuilder took 1412.55 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: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 11.5 GB. [2019-11-20 09:31:15,715 INFO L168 Benchmark]: TraceAbstraction took 2413.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 960.9 MB in the end (delta: 108.7 MB). Peak memory consumption was 108.7 MB. Max. memory is 11.5 GB. [2019-11-20 09:31:15,716 INFO L168 Benchmark]: Witness Printer took 50.84 ms. Allocated memory is still 1.2 GB. Free memory was 960.9 MB in the beginning and 954.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-20 09:31:15,720 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 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 855.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 116.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1412.55 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: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2413.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 960.9 MB in the end (delta: 108.7 MB). Peak memory consumption was 108.7 MB. Max. memory is 11.5 GB. * Witness Printer took 50.84 ms. Allocated memory is still 1.2 GB. Free memory was 960.9 MB in the beginning and 954.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 570]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L585] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L585] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L586] int *pat=malloc(sizeof(int)*pat_len); [L587] int *a=malloc(sizeof(int)*a_len); VAL [a={-2:0}, a_len=1073741823, malloc(sizeof(int)*a_len)={-2:0}, malloc(sizeof(int)*pat_len)={1:0}, pat={1:0}, pat_len=1073741824] [L588] CALL is_relaxed_prefix(pat, pat_len, a, a_len) VAL [\old(a_length)=1073741823, \old(pat_length)=1073741824, a={-2:0}, pat={1:0}] [L565] COND FALSE !(pat_length>a_length+1) [L567] int shift=0; [L568] int i=0; VAL [\old(a_length)=1073741823, \old(pat_length)=1073741824, a={-2:0}, a={-2:0}, a_length=1073741823, i=0, pat={1:0}, pat={1:0}, pat_length=1073741824, shift=0] [L568] COND TRUE i