./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.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/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/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 b9551eac17e9ca0a42612f73eb01545dde991582 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:04:09,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:04:09,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:04:09,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:04:09,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:04:09,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:04:09,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:04:09,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:04:09,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:04:09,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:04:09,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:04:09,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:04:09,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:04:09,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:04:09,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:04:09,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:04:09,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:04:09,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:04:09,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:04:09,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:04:09,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:04:09,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:04:09,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:04:09,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:04:09,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:04:09,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:04:09,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:04:09,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:04:09,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:04:09,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:04:09,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:04:09,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:04:09,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:04:09,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:04:09,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:04:09,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:04:09,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:04:09,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:04:09,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:04:09,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:04:09,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:04:09,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 21:04:09,832 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:04:09,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:04:09,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:04:09,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:04:09,834 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:04:09,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:04:09,834 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:04:09,835 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 21:04:09,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:04:09,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:04:09,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:04:09,836 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 21:04:09,836 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 21:04:09,836 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 21:04:09,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:04:09,837 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:04:09,837 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:04:09,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:04:09,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:04:09,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:04:09,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:04:09,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:04:09,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:04:09,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:04:09,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:04:09,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:04:09,840 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/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/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 -> b9551eac17e9ca0a42612f73eb01545dde991582 [2019-11-15 21:04:09,868 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:04:09,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:04:09,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:04:09,884 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:04:09,884 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:04:09,885 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2019-11-15 21:04:09,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/data/585ada606/86571932b4304dba96547c8e347785b8/FLAG110aa9ae0 [2019-11-15 21:04:10,413 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:04:10,413 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2019-11-15 21:04:10,423 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/data/585ada606/86571932b4304dba96547c8e347785b8/FLAG110aa9ae0 [2019-11-15 21:04:10,740 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/data/585ada606/86571932b4304dba96547c8e347785b8 [2019-11-15 21:04:10,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:04:10,744 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 21:04:10,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:04:10,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:04:10,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:04:10,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:04:10" (1/1) ... [2019-11-15 21:04:10,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8145f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:04:10, skipping insertion in model container [2019-11-15 21:04:10,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:04:10" (1/1) ... [2019-11-15 21:04:10,758 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:04:10,798 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:04:11,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:04:11,188 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:04:11,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:04:11,310 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:04:11,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:04:11 WrapperNode [2019-11-15 21:04:11,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:04:11,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:04:11,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:04:11,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:04:11,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:04:11" (1/1) ... [2019-11-15 21:04:11,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:04:11" (1/1) ... [2019-11-15 21:04:11,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:04:11" (1/1) ... [2019-11-15 21:04:11,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:04:11" (1/1) ... [2019-11-15 21:04:11,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:04:11" (1/1) ... [2019-11-15 21:04:11,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:04:11" (1/1) ... [2019-11-15 21:04:11,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:04:11" (1/1) ... [2019-11-15 21:04:11,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:04:11,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:04:11,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:04:11,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:04:11,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:04:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:04:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 21:04:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:04:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-15 21:04:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-15 21:04:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-15 21:04:11,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-15 21:04:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-15 21:04:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 21:04:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-15 21:04:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-15 21:04:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-15 21:04:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-15 21:04:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-15 21:04:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-15 21:04:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-15 21:04:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-15 21:04:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-15 21:04:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-15 21:04:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-15 21:04:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-15 21:04:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-15 21:04:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-15 21:04:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-15 21:04:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-15 21:04:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-15 21:04:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-15 21:04:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-15 21:04:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-15 21:04:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-15 21:04:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-15 21:04:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-15 21:04:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-15 21:04:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-15 21:04:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-15 21:04:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-15 21:04:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-15 21:04:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-15 21:04:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-15 21:04:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-15 21:04:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-15 21:04:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-15 21:04:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-15 21:04:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-15 21:04:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-15 21:04:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-15 21:04:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-15 21:04:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-15 21:04:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-15 21:04:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-15 21:04:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-15 21:04:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-15 21:04:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-15 21:04:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-15 21:04:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-15 21:04:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-15 21:04:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-15 21:04:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-15 21:04:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-15 21:04:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-15 21:04:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-15 21:04:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-15 21:04:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-15 21:04:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-15 21:04:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-15 21:04:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-15 21:04:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-15 21:04:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-15 21:04:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-15 21:04:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-15 21:04:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-15 21:04:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-15 21:04:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-15 21:04:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-15 21:04:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-15 21:04:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-15 21:04:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-15 21:04:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-15 21:04:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-15 21:04:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-15 21:04:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-15 21:04:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-15 21:04:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-15 21:04:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-15 21:04:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-15 21:04:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-15 21:04:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-15 21:04:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-15 21:04:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-15 21:04:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-15 21:04:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-15 21:04:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-15 21:04:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-15 21:04:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-15 21:04:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-15 21:04:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-15 21:04:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-15 21:04:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-15 21:04:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-15 21:04:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-15 21:04:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-15 21:04:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-15 21:04:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-15 21:04:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-15 21:04:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-15 21:04:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-15 21:04:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-15 21:04:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-15 21:04:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-15 21:04:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-15 21:04:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-15 21:04:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-15 21:04:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-15 21:04:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-15 21:04:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-15 21:04:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-15 21:04:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-15 21:04:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 21:04:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:04:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:04:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 21:04:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 21:04:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 21:04:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:04:11,881 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:04:11,882 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-15 21:04:11,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:04:11 BoogieIcfgContainer [2019-11-15 21:04:11,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:04:11,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:04:11,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:04:11,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:04:11,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:04:10" (1/3) ... [2019-11-15 21:04:11,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d971225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:04:11, skipping insertion in model container [2019-11-15 21:04:11,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:04:11" (2/3) ... [2019-11-15 21:04:11,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d971225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:04:11, skipping insertion in model container [2019-11-15 21:04:11,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:04:11" (3/3) ... [2019-11-15 21:04:11,889 INFO L109 eAbstractionObserver]: Analyzing ICFG mult_array-alloca-1.i [2019-11-15 21:04:11,898 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:04:11,905 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-15 21:04:11,914 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-15 21:04:11,931 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:04:11,931 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 21:04:11,931 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:04:11,932 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:04:11,932 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:04:11,932 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:04:11,932 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:04:11,932 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:04:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-15 21:04:11,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 21:04:11,954 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:04:11,955 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:04:11,957 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 21:04:11,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:04:11,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2019-11-15 21:04:11,969 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:04:11,970 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484325439] [2019-11-15 21:04:11,970 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:11,970 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:11,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:04:12,057 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:04:12,058 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998390858] [2019-11-15 21:04:12,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/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 [2019-11-15 21:04:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:04:12,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 21:04:12,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:04:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:04:12,269 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484325439] [2019-11-15 21:04:12,270 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:04:12,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998390858] [2019-11-15 21:04:12,271 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:04:12,272 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:04:12,272 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586324439] [2019-11-15 21:04:12,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:04:12,277 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:04:12,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:04:12,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:04:12,294 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2019-11-15 21:04:12,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:04:12,341 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-11-15 21:04:12,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:04:12,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-15 21:04:12,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:04:12,353 INFO L225 Difference]: With dead ends: 33 [2019-11-15 21:04:12,354 INFO L226 Difference]: Without dead ends: 30 [2019-11-15 21:04:12,355 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:04:12,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-15 21:04:12,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-15 21:04:12,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 21:04:12,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-15 21:04:12,397 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2019-11-15 21:04:12,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:04:12,398 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-15 21:04:12,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:04:12,398 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-15 21:04:12,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 21:04:12,399 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:04:12,399 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:04:12,613 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:12,613 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr1REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 21:04:12,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:04:12,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2019-11-15 21:04:12,613 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:04:12,614 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775223381] [2019-11-15 21:04:12,614 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:12,614 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:12,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:04:12,635 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:04:12,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620428325] [2019-11-15 21:04:12,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/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 [2019-11-15 21:04:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:04:12,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:04:12,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:04:12,826 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-15 21:04:12,826 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-15 21:04:12,827 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:04:12,837 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:04:12,838 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 21:04:12,839 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-15 21:04:12,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:04:12,854 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775223381] [2019-11-15 21:04:12,854 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:04:12,854 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620428325] [2019-11-15 21:04:12,854 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:04:12,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:04:12,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884608612] [2019-11-15 21:04:12,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:04:12,856 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:04:12,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:04:12,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:04:12,857 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2019-11-15 21:04:12,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:04:12,893 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-11-15 21:04:12,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:04:12,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-15 21:04:12,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:04:12,895 INFO L225 Difference]: With dead ends: 28 [2019-11-15 21:04:12,895 INFO L226 Difference]: Without dead ends: 28 [2019-11-15 21:04:12,896 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:04:12,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-15 21:04:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-15 21:04:12,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 21:04:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-11-15 21:04:12,900 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2019-11-15 21:04:12,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:04:12,900 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-11-15 21:04:12,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:04:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-11-15 21:04:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 21:04:12,901 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:04:12,901 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:04:13,105 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:13,105 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr1REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 21:04:13,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:04:13,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2019-11-15 21:04:13,106 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:04:13,106 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229855488] [2019-11-15 21:04:13,106 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:13,106 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:13,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:04:13,116 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:04:13,116 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710997698] [2019-11-15 21:04:13,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/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 [2019-11-15 21:04:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:04:13,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-15 21:04:13,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:04:13,259 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_12|], 1=[|v_#valid_25|]} [2019-11-15 21:04:13,265 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:04:13,266 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2019-11-15 21:04:13,267 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:04:13,288 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:04:13,301 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 10 treesize of output 8 [2019-11-15 21:04:13,301 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 21:04:13,314 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:04:13,318 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 21:04:13,319 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:30, output treesize:35 [2019-11-15 21:04:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:04:13,377 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229855488] [2019-11-15 21:04:13,377 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:04:13,378 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710997698] [2019-11-15 21:04:13,378 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:04:13,378 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 21:04:13,378 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401674650] [2019-11-15 21:04:13,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:04:13,379 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:04:13,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:04:13,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:04:13,379 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2019-11-15 21:04:13,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:04:13,510 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2019-11-15 21:04:13,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:04:13,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-15 21:04:13,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:04:13,512 INFO L225 Difference]: With dead ends: 32 [2019-11-15 21:04:13,513 INFO L226 Difference]: Without dead ends: 32 [2019-11-15 21:04:13,513 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:04:13,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-15 21:04:13,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-11-15 21:04:13,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 21:04:13,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-15 21:04:13,517 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2019-11-15 21:04:13,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:04:13,518 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-15 21:04:13,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:04:13,518 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-15 21:04:13,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 21:04:13,519 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:04:13,519 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:04:13,728 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:13,729 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr1REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 21:04:13,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:04:13,729 INFO L82 PathProgramCache]: Analyzing trace with hash -650126436, now seen corresponding path program 1 times [2019-11-15 21:04:13,730 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:04:13,730 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327044384] [2019-11-15 21:04:13,730 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:13,730 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:13,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:04:13,741 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:04:13,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122719612] [2019-11-15 21:04:13,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/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 [2019-11-15 21:04:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:04:13,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:04:13,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:04:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:04:13,912 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327044384] [2019-11-15 21:04:13,912 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:04:13,913 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122719612] [2019-11-15 21:04:13,913 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:04:13,913 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 21:04:13,913 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188500102] [2019-11-15 21:04:13,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:04:13,914 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:04:13,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:04:13,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:04:13,914 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2019-11-15 21:04:13,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:04:13,986 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2019-11-15 21:04:13,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:04:13,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-15 21:04:13,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:04:13,987 INFO L225 Difference]: With dead ends: 51 [2019-11-15 21:04:13,987 INFO L226 Difference]: Without dead ends: 51 [2019-11-15 21:04:13,988 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:04:13,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-15 21:04:13,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2019-11-15 21:04:13,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-15 21:04:13,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-11-15 21:04:13,993 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 17 [2019-11-15 21:04:13,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:04:13,993 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-11-15 21:04:13,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:04:13,994 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-11-15 21:04:13,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 21:04:13,994 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:04:13,995 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:04:14,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:14,195 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr1REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 21:04:14,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:04:14,196 INFO L82 PathProgramCache]: Analyzing trace with hash 50938142, now seen corresponding path program 1 times [2019-11-15 21:04:14,196 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:04:14,196 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994172038] [2019-11-15 21:04:14,196 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:14,196 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:14,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:04:14,207 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:04:14,207 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853927967] [2019-11-15 21:04:14,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/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 [2019-11-15 21:04:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:04:14,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-15 21:04:14,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:04:14,352 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_26|]} [2019-11-15 21:04:14,359 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 21:04:14,360 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2019-11-15 21:04:14,360 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:04:14,371 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:04:14,376 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 10 treesize of output 8 [2019-11-15 21:04:14,377 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 21:04:14,388 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:04:14,389 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 21:04:14,390 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:24 [2019-11-15 21:04:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:04:14,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994172038] [2019-11-15 21:04:14,487 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:04:14,487 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853927967] [2019-11-15 21:04:14,487 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 21:04:14,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-15 21:04:14,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612509693] [2019-11-15 21:04:14,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:04:14,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:04:14,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:04:14,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:04:14,489 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2019-11-15 21:04:15,581 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2019-11-15 21:04:15,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:04:15,621 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-15 21:04:15,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:04:15,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-15 21:04:15,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:04:15,623 INFO L225 Difference]: With dead ends: 40 [2019-11-15 21:04:15,623 INFO L226 Difference]: Without dead ends: 40 [2019-11-15 21:04:15,624 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:04:15,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-15 21:04:15,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-11-15 21:04:15,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-15 21:04:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-11-15 21:04:15,628 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 17 [2019-11-15 21:04:15,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:04:15,629 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-11-15 21:04:15,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:04:15,629 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-11-15 21:04:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 21:04:15,630 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:04:15,630 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:04:15,830 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:15,830 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr1REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 21:04:15,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:04:15,831 INFO L82 PathProgramCache]: Analyzing trace with hash -2001298264, now seen corresponding path program 1 times [2019-11-15 21:04:15,831 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:04:15,831 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914562714] [2019-11-15 21:04:15,831 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:15,831 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:15,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:04:15,855 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:04:15,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667205893] [2019-11-15 21:04:15,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/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 [2019-11-15 21:04:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:04:15,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 21:04:15,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:04:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:04:16,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914562714] [2019-11-15 21:04:16,051 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:04:16,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667205893] [2019-11-15 21:04:16,051 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:04:16,051 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 21:04:16,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419280876] [2019-11-15 21:04:16,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 21:04:16,052 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:04:16,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 21:04:16,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:04:16,052 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2019-11-15 21:04:16,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:04:16,131 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2019-11-15 21:04:16,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 21:04:16,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-15 21:04:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:04:16,133 INFO L225 Difference]: With dead ends: 48 [2019-11-15 21:04:16,133 INFO L226 Difference]: Without dead ends: 48 [2019-11-15 21:04:16,133 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:04:16,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-15 21:04:16,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2019-11-15 21:04:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-15 21:04:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2019-11-15 21:04:16,138 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 19 [2019-11-15 21:04:16,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:04:16,138 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2019-11-15 21:04:16,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 21:04:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2019-11-15 21:04:16,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 21:04:16,139 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:04:16,139 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:04:16,340 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:16,340 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr1REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 21:04:16,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:04:16,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1706863018, now seen corresponding path program 1 times [2019-11-15 21:04:16,341 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:04:16,341 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281982807] [2019-11-15 21:04:16,341 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:16,341 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:16,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:04:16,349 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:04:16,349 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427720209] [2019-11-15 21:04:16,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:04:16,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 21:04:16,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:04:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:04:16,546 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281982807] [2019-11-15 21:04:16,546 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:04:16,546 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427720209] [2019-11-15 21:04:16,546 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:04:16,547 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 21:04:16,547 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281613850] [2019-11-15 21:04:16,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:04:16,547 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:04:16,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:04:16,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:04:16,548 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 8 states. [2019-11-15 21:04:16,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:04:16,657 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2019-11-15 21:04:16,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 21:04:16,659 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-15 21:04:16,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:04:16,660 INFO L225 Difference]: With dead ends: 45 [2019-11-15 21:04:16,660 INFO L226 Difference]: Without dead ends: 45 [2019-11-15 21:04:16,661 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-11-15 21:04:16,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-15 21:04:16,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2019-11-15 21:04:16,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-15 21:04:16,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-11-15 21:04:16,665 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2019-11-15 21:04:16,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:04:16,666 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-11-15 21:04:16,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:04:16,666 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-11-15 21:04:16,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 21:04:16,666 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:04:16,667 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] [2019-11-15 21:04:16,869 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:16,870 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr1REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 21:04:16,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:04:16,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1910705585, now seen corresponding path program 1 times [2019-11-15 21:04:16,870 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:04:16,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10942255] [2019-11-15 21:04:16,870 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:16,871 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:16,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:04:16,875 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:04:16,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314982750] [2019-11-15 21:04:16,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:04:16,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 21:04:16,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:04:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:04:16,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10942255] [2019-11-15 21:04:16,998 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:04:16,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314982750] [2019-11-15 21:04:16,999 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:04:16,999 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 21:04:16,999 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877897463] [2019-11-15 21:04:16,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:04:16,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:04:17,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:04:17,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:04:17,000 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2019-11-15 21:04:17,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:04:17,059 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2019-11-15 21:04:17,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:04:17,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-15 21:04:17,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:04:17,060 INFO L225 Difference]: With dead ends: 66 [2019-11-15 21:04:17,060 INFO L226 Difference]: Without dead ends: 66 [2019-11-15 21:04:17,060 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:04:17,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-15 21:04:17,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 45. [2019-11-15 21:04:17,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-15 21:04:17,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2019-11-15 21:04:17,065 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 20 [2019-11-15 21:04:17,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:04:17,066 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2019-11-15 21:04:17,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:04:17,066 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2019-11-15 21:04:17,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 21:04:17,067 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:04:17,067 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] [2019-11-15 21:04:17,269 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:17,270 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr1REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 21:04:17,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:04:17,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704045, now seen corresponding path program 1 times [2019-11-15 21:04:17,270 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:04:17,270 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748768820] [2019-11-15 21:04:17,270 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:17,270 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:17,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:04:17,278 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:04:17,278 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416137204] [2019-11-15 21:04:17,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:04:17,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:04:17,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:04:17,373 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-15 21:04:17,373 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-15 21:04:17,374 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:04:17,377 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:04:17,378 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 21:04:17,378 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-15 21:04:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:04:17,386 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748768820] [2019-11-15 21:04:17,386 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:04:17,386 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416137204] [2019-11-15 21:04:17,386 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:04:17,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:04:17,387 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172156219] [2019-11-15 21:04:17,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:04:17,387 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:04:17,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:04:17,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:04:17,387 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 3 states. [2019-11-15 21:04:17,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:04:17,403 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2019-11-15 21:04:17,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:04:17,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-11-15 21:04:17,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:04:17,405 INFO L225 Difference]: With dead ends: 44 [2019-11-15 21:04:17,405 INFO L226 Difference]: Without dead ends: 44 [2019-11-15 21:04:17,406 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:04:17,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-15 21:04:17,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-11-15 21:04:17,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-15 21:04:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2019-11-15 21:04:17,408 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 20 [2019-11-15 21:04:17,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:04:17,409 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2019-11-15 21:04:17,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:04:17,409 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2019-11-15 21:04:17,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 21:04:17,409 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:04:17,410 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] [2019-11-15 21:04:17,612 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:17,613 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr1REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 21:04:17,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:04:17,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704044, now seen corresponding path program 1 times [2019-11-15 21:04:17,613 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:04:17,613 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554102309] [2019-11-15 21:04:17,613 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:17,614 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:17,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:04:17,620 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:04:17,621 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262605789] [2019-11-15 21:04:17,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:04:17,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 21:04:17,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:04:17,746 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 21:04:17,747 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 1 case distinctions, treesize of input 15 treesize of output 35 [2019-11-15 21:04:17,747 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 21:04:17,765 INFO L567 ElimStorePlain]: treesize reduction 14, result has 63.2 percent of original size [2019-11-15 21:04:17,765 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 21:04:17,765 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:13 [2019-11-15 21:04:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:04:17,800 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554102309] [2019-11-15 21:04:17,801 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:04:17,801 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262605789] [2019-11-15 21:04:17,801 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:04:17,801 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 21:04:17,801 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817948019] [2019-11-15 21:04:17,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:04:17,802 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:04:17,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:04:17,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:04:17,802 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 5 states. [2019-11-15 21:04:17,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:04:17,850 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-15 21:04:17,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:04:17,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-15 21:04:17,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:04:17,851 INFO L225 Difference]: With dead ends: 43 [2019-11-15 21:04:17,851 INFO L226 Difference]: Without dead ends: 43 [2019-11-15 21:04:17,851 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:04:17,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-15 21:04:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-11-15 21:04:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-15 21:04:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-11-15 21:04:17,856 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 20 [2019-11-15 21:04:17,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:04:17,856 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-11-15 21:04:17,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:04:17,866 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-11-15 21:04:17,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 21:04:17,867 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:04:17,867 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] [2019-11-15 21:04:18,075 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:18,075 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr1REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 21:04:18,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:04:18,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1652540147, now seen corresponding path program 1 times [2019-11-15 21:04:18,076 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:04:18,076 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412966989] [2019-11-15 21:04:18,076 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:18,076 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:18,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:04:18,088 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:04:18,088 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332840994] [2019-11-15 21:04:18,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:04:18,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 21:04:18,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:04:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:04:18,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412966989] [2019-11-15 21:04:18,206 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:04:18,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332840994] [2019-11-15 21:04:18,206 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:04:18,206 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 21:04:18,206 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737765569] [2019-11-15 21:04:18,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:04:18,207 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:04:18,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:04:18,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:04:18,207 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 5 states. [2019-11-15 21:04:18,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:04:18,261 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2019-11-15 21:04:18,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:04:18,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-15 21:04:18,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:04:18,262 INFO L225 Difference]: With dead ends: 57 [2019-11-15 21:04:18,262 INFO L226 Difference]: Without dead ends: 57 [2019-11-15 21:04:18,262 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:04:18,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-15 21:04:18,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 36. [2019-11-15 21:04:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-15 21:04:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-11-15 21:04:18,265 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2019-11-15 21:04:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:04:18,266 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-11-15 21:04:18,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:04:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-11-15 21:04:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 21:04:18,267 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:04:18,267 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] [2019-11-15 21:04:18,467 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:18,468 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr1REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 21:04:18,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:04:18,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1373144461, now seen corresponding path program 1 times [2019-11-15 21:04:18,468 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:04:18,468 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457828960] [2019-11-15 21:04:18,468 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:18,468 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:18,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:04:18,487 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:04:18,487 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30322578] [2019-11-15 21:04:18,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:04:18,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 21:04:18,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:04:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:04:18,623 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457828960] [2019-11-15 21:04:18,624 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:04:18,624 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30322578] [2019-11-15 21:04:18,624 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:04:18,624 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 21:04:18,624 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574690422] [2019-11-15 21:04:18,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:04:18,624 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:04:18,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:04:18,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:04:18,625 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2019-11-15 21:04:18,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:04:18,682 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2019-11-15 21:04:18,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:04:18,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-15 21:04:18,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:04:18,683 INFO L225 Difference]: With dead ends: 66 [2019-11-15 21:04:18,683 INFO L226 Difference]: Without dead ends: 66 [2019-11-15 21:04:18,683 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:04:18,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-15 21:04:18,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 43. [2019-11-15 21:04:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-15 21:04:18,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2019-11-15 21:04:18,687 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 20 [2019-11-15 21:04:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:04:18,687 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2019-11-15 21:04:18,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:04:18,687 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-11-15 21:04:18,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 21:04:18,688 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:04:18,692 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] [2019-11-15 21:04:18,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:18,896 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr1REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 21:04:18,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:04:18,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1631309899, now seen corresponding path program 1 times [2019-11-15 21:04:18,897 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:04:18,897 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324427593] [2019-11-15 21:04:18,897 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:18,897 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:04:18,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:04:18,903 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:04:18,903 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86027409] [2019-11-15 21:04:18,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:04:18,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 21:04:18,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:04:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:04:19,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324427593] [2019-11-15 21:04:19,031 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:04:19,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86027409] [2019-11-15 21:04:19,032 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:04:19,032 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 21:04:19,032 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609425612] [2019-11-15 21:04:19,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:04:19,032 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:04:19,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:04:19,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:04:19,033 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 5 states. [2019-11-15 21:04:19,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:04:19,084 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-11-15 21:04:19,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:04:19,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-15 21:04:19,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:04:19,085 INFO L225 Difference]: With dead ends: 42 [2019-11-15 21:04:19,085 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 21:04:19,085 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:04:19,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 21:04:19,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 21:04:19,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 21:04:19,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 21:04:19,085 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-11-15 21:04:19,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:04:19,086 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:04:19,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:04:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 21:04:19,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 21:04:19,286 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:04:19,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:04:19 BoogieIcfgContainer [2019-11-15 21:04:19,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:04:19,290 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:04:19,290 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:04:19,290 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:04:19,291 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:04:11" (3/4) ... [2019-11-15 21:04:19,293 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 21:04:19,299 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-15 21:04:19,299 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-15 21:04:19,299 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-15 21:04:19,299 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-11-15 21:04:19,300 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-11-15 21:04:19,300 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-15 21:04:19,300 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-11-15 21:04:19,303 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-15 21:04:19,303 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-15 21:04:19,304 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 21:04:19,304 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 21:04:19,344 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b2ccc00b-c2d9-4d45-85ed-d6f483b4a149/bin/uautomizer/witness.graphml [2019-11-15 21:04:19,344 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:04:19,345 INFO L168 Benchmark]: Toolchain (without parser) took 8601.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 944.8 MB in the beginning and 1.0 GB in the end (delta: -104.1 MB). Peak memory consumption was 74.1 MB. Max. memory is 11.5 GB. [2019-11-15 21:04:19,346 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:04:19,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:04:19,346 INFO L168 Benchmark]: Boogie Preprocessor took 73.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:04:19,347 INFO L168 Benchmark]: RCFGBuilder took 497.66 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: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:04:19,347 INFO L168 Benchmark]: TraceAbstraction took 7406.16 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 38.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.4 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:04:19,348 INFO L168 Benchmark]: Witness Printer took 54.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:04:19,349 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 566.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 497.66 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: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7406.16 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 38.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.4 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * Witness Printer took 54.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 7 error locations. Result: SAFE, OverallTime: 7.3s, OverallIterations: 13, TraceHistogramMax: 2, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 258 SDtfs, 336 SDslu, 368 SDs, 0 SdLazy, 448 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=8, 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, 13 MinimizatonAttempts, 96 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 217 ConstructedInterpolants, 13 QuantifiedInterpolants, 25920 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1056 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 11/12 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...