./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/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 b2f3c0ded3a6ea37e981661d4b4066d384875e4d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:58:43,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:43,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:43,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:43,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:43,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:43,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:43,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:43,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:43,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:43,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:43,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:43,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:43,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:43,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:43,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:43,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:43,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:43,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:43,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:43,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:43,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:43,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:43,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:43,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:43,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:43,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:43,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:43,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:43,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:43,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:43,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:43,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:43,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:43,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:43,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:43,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:43,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:43,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:43,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:43,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:43,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:58:43,620 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:43,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:43,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:43,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:43,625 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:43,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:43,625 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:58:43,626 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:58:43,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:58:43,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:58:43,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:43,627 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:58:43,628 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:58:43,628 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:58:43,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:58:43,628 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:58:43,628 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:43,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:43,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:43,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:58:43,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:58:43,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:58:43,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:43,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:58:43,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:58:43,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:58:43,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/working_dir_34e23126-866e-4d5f-8920-ad7173457951/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 -> b2f3c0ded3a6ea37e981661d4b4066d384875e4d [2019-10-22 08:58:43,665 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:43,675 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:43,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:43,680 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:43,680 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:43,681 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2019-10-22 08:58:43,729 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/data/b78dbc32a/a4444223fa864dd48e1217a7807eec91/FLAG39657dcfb [2019-10-22 08:58:44,170 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:44,171 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2019-10-22 08:58:44,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/data/b78dbc32a/a4444223fa864dd48e1217a7807eec91/FLAG39657dcfb [2019-10-22 08:58:44,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/data/b78dbc32a/a4444223fa864dd48e1217a7807eec91 [2019-10-22 08:58:44,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:44,194 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:58:44,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:44,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:44,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:44,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:44" (1/1) ... [2019-10-22 08:58:44,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ce98b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:44, skipping insertion in model container [2019-10-22 08:58:44,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:44" (1/1) ... [2019-10-22 08:58:44,209 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:44,247 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:44,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:44,629 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:44,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:44,716 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:44,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:44 WrapperNode [2019-10-22 08:58:44,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:44,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:44,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:44,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:44,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:44" (1/1) ... [2019-10-22 08:58:44,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:44" (1/1) ... [2019-10-22 08:58:44,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:44" (1/1) ... [2019-10-22 08:58:44,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:44" (1/1) ... [2019-10-22 08:58:44,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:44" (1/1) ... [2019-10-22 08:58:44,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:44" (1/1) ... [2019-10-22 08:58:44,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:44" (1/1) ... [2019-10-22 08:58:44,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:44,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:44,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:44,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:44,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/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 [2019-10-22 08:58:44,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:58:44,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:44,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 08:58:44,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 08:58:44,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-22 08:58:44,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-22 08:58:44,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-22 08:58:44,815 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemrchr [2019-10-22 08:58:44,815 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:58:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 08:58:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 08:58:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 08:58:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 08:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 08:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 08:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 08:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 08:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 08:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 08:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 08:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 08:58:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 08:58:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 08:58:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 08:58:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 08:58:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 08:58:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 08:58:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-22 08:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-22 08:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-22 08:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 08:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 08:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 08:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 08:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 08:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 08:58:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 08:58:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 08:58:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 08:58:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 08:58:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 08:58:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 08:58:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 08:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 08:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 08:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 08:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 08:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 08:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 08:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 08:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 08:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 08:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 08:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 08:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 08:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 08:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 08:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 08:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 08:58:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 08:58:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 08:58:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 08:58:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 08:58:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 08:58:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:58:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 08:58:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 08:58:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:58:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 08:58:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 08:58:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 08:58:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 08:58:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 08:58:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 08:58:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 08:58:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 08:58:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 08:58:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 08:58:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 08:58:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 08:58:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 08:58:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 08:58:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 08:58:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 08:58:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 08:58:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 08:58:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 08:58:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 08:58:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 08:58:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 08:58:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 08:58:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 08:58:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 08:58:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 08:58:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 08:58:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 08:58:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 08:58:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 08:58:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 08:58:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 08:58:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 08:58:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 08:58:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 08:58:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 08:58:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 08:58:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 08:58:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 08:58:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 08:58:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 08:58:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 08:58:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 08:58:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 08:58:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 08:58:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 08:58:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 08:58:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 08:58:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-22 08:58:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-22 08:58:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure cmemrchr [2019-10-22 08:58:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:58:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:58:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:58:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:58:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:58:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:58:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:45,292 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:45,292 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-22 08:58:45,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:45 BoogieIcfgContainer [2019-10-22 08:58:45,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:45,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:58:45,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:58:45,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:58:45,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:58:44" (1/3) ... [2019-10-22 08:58:45,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bdafa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:45, skipping insertion in model container [2019-10-22 08:58:45,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:44" (2/3) ... [2019-10-22 08:58:45,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bdafa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:45, skipping insertion in model container [2019-10-22 08:58:45,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:45" (3/3) ... [2019-10-22 08:58:45,300 INFO L109 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca-2.i [2019-10-22 08:58:45,309 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:58:45,316 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-22 08:58:45,327 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-22 08:58:45,346 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:58:45,346 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:58:45,346 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:58:45,346 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:45,347 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:45,347 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:58:45,347 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:45,347 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:58:45,361 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-10-22 08:58:45,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:58:45,371 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:45,371 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:45,373 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:58:45,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:45,379 INFO L82 PathProgramCache]: Analyzing trace with hash -840380262, now seen corresponding path program 1 times [2019-10-22 08:58:45,387 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:45,387 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674432379] [2019-10-22 08:58:45,388 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:45,388 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:45,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:45,562 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674432379] [2019-10-22 08:58:45,563 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:45,563 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:58:45,564 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035960602] [2019-10-22 08:58:45,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:58:45,568 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:45,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:58:45,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:58:45,585 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2019-10-22 08:58:45,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:45,694 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-10-22 08:58:45,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:58:45,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-22 08:58:45,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:45,704 INFO L225 Difference]: With dead ends: 33 [2019-10-22 08:58:45,704 INFO L226 Difference]: Without dead ends: 30 [2019-10-22 08:58:45,706 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:58:45,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-22 08:58:45,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-10-22 08:58:45,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 08:58:45,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-10-22 08:58:45,741 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 11 [2019-10-22 08:58:45,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:45,741 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-10-22 08:58:45,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:58:45,741 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-10-22 08:58:45,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:58:45,742 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:45,742 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:45,742 INFO L410 AbstractCegarLoop]: === Iteration 2 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:58:45,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:45,743 INFO L82 PathProgramCache]: Analyzing trace with hash -840380261, now seen corresponding path program 1 times [2019-10-22 08:58:45,743 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:45,743 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417059727] [2019-10-22 08:58:45,743 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:45,744 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:45,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:45,862 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417059727] [2019-10-22 08:58:45,862 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:45,862 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:58:45,863 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722521142] [2019-10-22 08:58:45,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:58:45,864 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:45,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:58:45,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:58:45,865 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 6 states. [2019-10-22 08:58:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:46,026 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-10-22 08:58:46,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:58:46,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-10-22 08:58:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:46,028 INFO L225 Difference]: With dead ends: 34 [2019-10-22 08:58:46,028 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 08:58:46,028 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:58:46,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 08:58:46,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-10-22 08:58:46,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-22 08:58:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-10-22 08:58:46,034 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2019-10-22 08:58:46,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:46,035 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-10-22 08:58:46,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:58:46,035 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-10-22 08:58:46,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:58:46,035 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:46,036 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:46,036 INFO L410 AbstractCegarLoop]: === Iteration 3 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:58:46,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:46,036 INFO L82 PathProgramCache]: Analyzing trace with hash 361396958, now seen corresponding path program 1 times [2019-10-22 08:58:46,036 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:46,036 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818992810] [2019-10-22 08:58:46,037 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:46,037 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:46,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:46,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818992810] [2019-10-22 08:58:46,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33253364] [2019-10-22 08:58:46,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:46,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 08:58:46,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:46,375 INFO L375 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 [2019-10-22 08:58:46,375 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:46,388 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:46,389 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:46,389 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-10-22 08:58:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:46,406 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:46,406 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2019-10-22 08:58:46,406 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722926539] [2019-10-22 08:58:46,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:58:46,407 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:46,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:58:46,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:58:46,407 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 7 states. [2019-10-22 08:58:46,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:46,562 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-10-22 08:58:46,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:58:46,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-10-22 08:58:46,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:46,564 INFO L225 Difference]: With dead ends: 33 [2019-10-22 08:58:46,564 INFO L226 Difference]: Without dead ends: 33 [2019-10-22 08:58:46,564 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:58:46,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-22 08:58:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2019-10-22 08:58:46,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 08:58:46,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-10-22 08:58:46,573 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 15 [2019-10-22 08:58:46,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:46,573 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-10-22 08:58:46,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:58:46,573 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-10-22 08:58:46,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:58:46,574 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:46,574 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:46,776 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:46,776 INFO L410 AbstractCegarLoop]: === Iteration 4 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:58:46,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:46,777 INFO L82 PathProgramCache]: Analyzing trace with hash 25874007, now seen corresponding path program 1 times [2019-10-22 08:58:46,777 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:46,777 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934467400] [2019-10-22 08:58:46,777 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:46,777 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:46,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:46,890 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934467400] [2019-10-22 08:58:46,897 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:46,897 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:58:46,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131980719] [2019-10-22 08:58:46,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:58:46,898 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:46,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:58:46,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:58:46,899 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 8 states. [2019-10-22 08:58:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:47,101 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2019-10-22 08:58:47,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:58:47,102 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-10-22 08:58:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:47,104 INFO L225 Difference]: With dead ends: 32 [2019-10-22 08:58:47,104 INFO L226 Difference]: Without dead ends: 32 [2019-10-22 08:58:47,105 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:58:47,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-22 08:58:47,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2019-10-22 08:58:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 08:58:47,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-10-22 08:58:47,110 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 19 [2019-10-22 08:58:47,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:47,110 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-10-22 08:58:47,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:58:47,111 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-10-22 08:58:47,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:58:47,111 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:47,111 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:47,111 INFO L410 AbstractCegarLoop]: === Iteration 5 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:58:47,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:47,112 INFO L82 PathProgramCache]: Analyzing trace with hash 25874008, now seen corresponding path program 1 times [2019-10-22 08:58:47,112 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:47,112 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942716857] [2019-10-22 08:58:47,112 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:47,112 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:47,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:47,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942716857] [2019-10-22 08:58:47,429 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446930016] [2019-10-22 08:58:47,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:47,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-22 08:58:47,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:47,571 INFO L375 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 [2019-10-22 08:58:47,571 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:47,579 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:47,579 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:47,580 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-10-22 08:58:47,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:47,766 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:47,766 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2019-10-22 08:58:47,767 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824781748] [2019-10-22 08:58:47,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-22 08:58:47,767 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:47,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-22 08:58:47,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2019-10-22 08:58:47,768 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 19 states. [2019-10-22 08:58:48,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:48,871 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2019-10-22 08:58:48,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-22 08:58:48,873 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2019-10-22 08:58:48,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:48,874 INFO L225 Difference]: With dead ends: 72 [2019-10-22 08:58:48,874 INFO L226 Difference]: Without dead ends: 72 [2019-10-22 08:58:48,875 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=206, Invalid=1126, Unknown=0, NotChecked=0, Total=1332 [2019-10-22 08:58:48,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-10-22 08:58:48,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 31. [2019-10-22 08:58:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 08:58:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-10-22 08:58:48,879 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2019-10-22 08:58:48,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:48,879 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-10-22 08:58:48,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-22 08:58:48,879 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-10-22 08:58:48,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 08:58:48,880 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:48,880 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:49,080 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:49,081 INFO L410 AbstractCegarLoop]: === Iteration 6 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:58:49,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:49,081 INFO L82 PathProgramCache]: Analyzing trace with hash 2125510050, now seen corresponding path program 1 times [2019-10-22 08:58:49,081 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:49,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125329661] [2019-10-22 08:58:49,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,082 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:49,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125329661] [2019-10-22 08:58:49,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515442344] [2019-10-22 08:58:49,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:49,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-22 08:58:49,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:49,376 INFO L375 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 [2019-10-22 08:58:49,376 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:49,380 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:49,381 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:49,381 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-10-22 08:58:49,399 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-10-22 08:58:49,399 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:49,409 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:49,410 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:49,410 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:9 [2019-10-22 08:58:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:49,434 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:49,434 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2019-10-22 08:58:49,434 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936132445] [2019-10-22 08:58:49,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 08:58:49,435 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:49,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 08:58:49,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:58:49,435 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 12 states. [2019-10-22 08:58:49,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:49,739 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2019-10-22 08:58:49,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 08:58:49,739 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2019-10-22 08:58:49,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:49,740 INFO L225 Difference]: With dead ends: 68 [2019-10-22 08:58:49,740 INFO L226 Difference]: Without dead ends: 68 [2019-10-22 08:58:49,741 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2019-10-22 08:58:49,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-22 08:58:49,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2019-10-22 08:58:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-10-22 08:58:49,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2019-10-22 08:58:49,749 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 24 [2019-10-22 08:58:49,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:49,750 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2019-10-22 08:58:49,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 08:58:49,750 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2019-10-22 08:58:49,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 08:58:49,750 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:49,751 INFO L380 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] [2019-10-22 08:58:49,951 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:49,951 INFO L410 AbstractCegarLoop]: === Iteration 7 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:58:49,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:49,952 INFO L82 PathProgramCache]: Analyzing trace with hash 2125031501, now seen corresponding path program 1 times [2019-10-22 08:58:49,952 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:49,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484340158] [2019-10-22 08:58:49,952 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,952 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:58:50,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484340158] [2019-10-22 08:58:50,062 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:50,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:58:50,063 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627047334] [2019-10-22 08:58:50,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:58:50,063 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:50,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:58:50,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:50,064 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 5 states. [2019-10-22 08:58:50,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:50,117 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2019-10-22 08:58:50,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:58:50,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-22 08:58:50,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:50,118 INFO L225 Difference]: With dead ends: 51 [2019-10-22 08:58:50,118 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 08:58:50,118 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:50,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 08:58:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-22 08:58:50,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 08:58:50,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-10-22 08:58:50,120 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2019-10-22 08:58:50,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:50,121 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-10-22 08:58:50,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:58:50,121 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-10-22 08:58:50,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-22 08:58:50,121 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:50,121 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:50,122 INFO L410 AbstractCegarLoop]: === Iteration 8 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:58:50,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:50,122 INFO L82 PathProgramCache]: Analyzing trace with hash -912322497, now seen corresponding path program 2 times [2019-10-22 08:58:50,122 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:50,122 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080601561] [2019-10-22 08:58:50,124 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:50,124 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:50,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:50,460 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080601561] [2019-10-22 08:58:50,460 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346643787] [2019-10-22 08:58:50,460 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:50,554 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:58:50,554 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:50,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 44 conjunts are in the unsatisfiable core [2019-10-22 08:58:50,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:50,590 INFO L375 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 [2019-10-22 08:58:50,590 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:50,597 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:50,598 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:50,598 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-10-22 08:58:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:50,887 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:50,887 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2019-10-22 08:58:50,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176507174] [2019-10-22 08:58:50,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-10-22 08:58:50,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:50,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-10-22 08:58:50,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2019-10-22 08:58:50,888 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 25 states. [2019-10-22 08:58:52,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:52,165 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2019-10-22 08:58:52,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-22 08:58:52,166 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2019-10-22 08:58:52,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:52,166 INFO L225 Difference]: With dead ends: 59 [2019-10-22 08:58:52,166 INFO L226 Difference]: Without dead ends: 59 [2019-10-22 08:58:52,167 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=263, Invalid=1807, Unknown=0, NotChecked=0, Total=2070 [2019-10-22 08:58:52,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-22 08:58:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2019-10-22 08:58:52,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 08:58:52,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-10-22 08:58:52,170 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 28 [2019-10-22 08:58:52,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:52,171 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-10-22 08:58:52,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-10-22 08:58:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-10-22 08:58:52,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 08:58:52,172 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:52,172 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:52,372 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:52,373 INFO L410 AbstractCegarLoop]: === Iteration 9 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:58:52,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:52,373 INFO L82 PathProgramCache]: Analyzing trace with hash 407669787, now seen corresponding path program 3 times [2019-10-22 08:58:52,373 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:52,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465550518] [2019-10-22 08:58:52,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:52,374 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:52,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:52,509 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465550518] [2019-10-22 08:58:52,509 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998804625] [2019-10-22 08:58:52,510 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:52,593 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-22 08:58:52,593 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:52,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-22 08:58:52,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:52,602 INFO L375 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 [2019-10-22 08:58:52,602 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,606 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:52,607 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,607 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-10-22 08:58:52,638 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-10-22 08:58:52,639 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,641 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:52,642 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,642 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:9 [2019-10-22 08:58:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:52,715 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:52,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2019-10-22 08:58:52,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74531232] [2019-10-22 08:58:52,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-22 08:58:52,716 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:52,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-22 08:58:52,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2019-10-22 08:58:52,717 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 18 states. [2019-10-22 08:58:53,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:53,088 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2019-10-22 08:58:53,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 08:58:53,088 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 33 [2019-10-22 08:58:53,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:53,088 INFO L225 Difference]: With dead ends: 54 [2019-10-22 08:58:53,088 INFO L226 Difference]: Without dead ends: 41 [2019-10-22 08:58:53,089 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2019-10-22 08:58:53,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-22 08:58:53,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2019-10-22 08:58:53,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-22 08:58:53,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2019-10-22 08:58:53,093 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 33 [2019-10-22 08:58:53,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:53,093 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2019-10-22 08:58:53,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-22 08:58:53,093 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2019-10-22 08:58:53,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 08:58:53,094 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:53,094 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:53,295 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:53,295 INFO L410 AbstractCegarLoop]: === Iteration 10 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:58:53,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:53,295 INFO L82 PathProgramCache]: Analyzing trace with hash -605171170, now seen corresponding path program 4 times [2019-10-22 08:58:53,295 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:53,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144933723] [2019-10-22 08:58:53,296 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:53,296 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:53,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:53,684 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144933723] [2019-10-22 08:58:53,684 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211369075] [2019-10-22 08:58:53,684 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:53,790 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 08:58:53,790 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:53,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 49 conjunts are in the unsatisfiable core [2019-10-22 08:58:53,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:00,371 WARN L191 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 22 [2019-10-22 08:59:04,464 WARN L191 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 25 [2019-10-22 08:59:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-22 08:59:04,470 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:59:04,470 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2019-10-22 08:59:04,470 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886244061] [2019-10-22 08:59:04,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-10-22 08:59:04,471 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:04,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-10-22 08:59:04,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=851, Unknown=3, NotChecked=0, Total=930 [2019-10-22 08:59:04,472 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 31 states. [2019-10-22 08:59:24,883 WARN L191 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2019-10-22 08:59:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:24,997 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2019-10-22 08:59:24,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-10-22 08:59:24,999 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 37 [2019-10-22 08:59:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:24,999 INFO L225 Difference]: With dead ends: 63 [2019-10-22 08:59:24,999 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:59:25,000 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=447, Invalid=3208, Unknown=5, NotChecked=0, Total=3660 [2019-10-22 08:59:25,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:59:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:59:25,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:59:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:59:25,001 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-10-22 08:59:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:25,001 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:25,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-10-22 08:59:25,001 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:59:25,001 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:59:25,201 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:59:25,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:59:25 BoogieIcfgContainer [2019-10-22 08:59:25,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:59:25,207 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:59:25,207 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:59:25,207 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:59:25,208 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:45" (3/4) ... [2019-10-22 08:59:25,211 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:59:25,216 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-10-22 08:59:25,217 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemrchr [2019-10-22 08:59:25,217 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-10-22 08:59:25,217 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-10-22 08:59:25,218 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-10-22 08:59:25,218 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-10-22 08:59:25,218 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-10-22 08:59:25,218 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-10-22 08:59:25,221 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2019-10-22 08:59:25,222 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-10-22 08:59:25,222 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 08:59:25,274 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_34e23126-866e-4d5f-8920-ad7173457951/bin/uautomizer/witness.graphml [2019-10-22 08:59:25,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:59:25,275 INFO L168 Benchmark]: Toolchain (without parser) took 41081.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.5 MB). Free memory was 939.3 MB in the beginning and 910.9 MB in the end (delta: 28.4 MB). Peak memory consumption was 243.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:25,275 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:25,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -185.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:25,276 INFO L168 Benchmark]: Boogie Preprocessor took 47.26 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: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:25,276 INFO L168 Benchmark]: RCFGBuilder took 528.38 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: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:25,277 INFO L168 Benchmark]: TraceAbstraction took 39912.53 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 913.2 MB in the end (delta: 160.9 MB). Peak memory consumption was 236.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:25,277 INFO L168 Benchmark]: Witness Printer took 67.58 ms. Allocated memory is still 1.2 GB. Free memory was 913.2 MB in the beginning and 910.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:25,284 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 521.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -185.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.26 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: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 528.38 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: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 39912.53 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 913.2 MB in the end (delta: 160.9 MB). Peak memory consumption was 236.4 MB. Max. memory is 11.5 GB. * Witness Printer took 67.58 ms. Allocated memory is still 1.2 GB. Free memory was 913.2 MB in the beginning and 910.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 5 error locations. Result: SAFE, OverallTime: 39.8s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 24.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 205 SDtfs, 639 SDslu, 587 SDs, 0 SdLazy, 2347 SolverSat, 210 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 12.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 349 GetRequests, 136 SyntacticMatches, 6 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 23.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 93 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 377 NumberOfCodeBlocks, 377 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 361 ConstructedInterpolants, 2 QuantifiedInterpolants, 84768 SizeOfPredicates, 48 NumberOfNonLiveVariables, 783 ConjunctsInSsa, 176 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 26/108 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...