./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/realloc1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/realloc1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/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 937cfa07aecfb3a07a3e6e685c2e5e481fbe44b8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 05:29:00,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:29:00,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:29:00,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:29:00,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:29:00,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:29:00,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:29:00,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:29:00,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:29:00,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:29:00,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:29:00,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:29:00,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:29:00,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:29:00,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:29:00,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:29:00,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:29:00,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:29:00,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:29:00,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:29:00,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:29:00,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:29:00,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:29:00,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:29:00,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:29:00,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:29:00,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:29:00,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:29:00,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:29:00,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:29:00,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:29:00,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:29:00,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:29:00,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:29:00,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:29:00,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:29:00,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:29:00,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:29:00,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:29:00,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:29:00,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:29:00,326 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 05:29:00,341 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:29:00,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:29:00,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:29:00,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:29:00,344 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:29:00,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:29:00,344 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:29:00,344 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 05:29:00,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:29:00,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:29:00,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:29:00,346 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 05:29:00,346 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 05:29:00,346 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 05:29:00,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:29:00,347 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 05:29:00,347 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 05:29:00,347 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:29:00,347 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:29:00,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:29:00,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:29:00,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:29:00,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:29:00,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:29:00,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:29:00,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:29:00,349 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 05:29:00,349 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 05:29:00,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 05:29:00,350 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/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 -> 937cfa07aecfb3a07a3e6e685c2e5e481fbe44b8 [2019-11-20 05:29:00,538 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:29:00,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:29:00,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:29:00,554 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:29:00,555 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:29:00,556 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/realloc1.c [2019-11-20 05:29:00,617 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/data/658cad859/b5dd20c65c314abcb240b51e6dbed93e/FLAGd9c8a2ed9 [2019-11-20 05:29:00,950 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:29:00,950 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/sv-benchmarks/c/memsafety-ext3/realloc1.c [2019-11-20 05:29:00,955 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/data/658cad859/b5dd20c65c314abcb240b51e6dbed93e/FLAGd9c8a2ed9 [2019-11-20 05:29:01,348 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/data/658cad859/b5dd20c65c314abcb240b51e6dbed93e [2019-11-20 05:29:01,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:29:01,352 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 05:29:01,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:29:01,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:29:01,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:29:01,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:29:01" (1/1) ... [2019-11-20 05:29:01,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182f8492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:29:01, skipping insertion in model container [2019-11-20 05:29:01,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:29:01" (1/1) ... [2019-11-20 05:29:01,369 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:29:01,387 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:29:01,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:29:01,597 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:29:01,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:29:01,700 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:29:01,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:29:01 WrapperNode [2019-11-20 05:29:01,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:29:01,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:29:01,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:29:01,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:29:01,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:29:01" (1/1) ... [2019-11-20 05:29:01,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:29:01" (1/1) ... [2019-11-20 05:29:01,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:29:01" (1/1) ... [2019-11-20 05:29:01,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:29:01" (1/1) ... [2019-11-20 05:29:01,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:29:01" (1/1) ... [2019-11-20 05:29:01,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:29:01" (1/1) ... [2019-11-20 05:29:01,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:29:01" (1/1) ... [2019-11-20 05:29:01,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:29:01,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:29:01,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:29:01,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:29:01,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:29:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:29:01,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 05:29:01,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:29:01,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 05:29:01,816 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2019-11-20 05:29:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 05:29:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 05:29:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 05:29:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-20 05:29:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 05:29:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 05:29:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2019-11-20 05:29:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-20 05:29:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 05:29:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-20 05:29:01,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 05:29:01,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:29:02,098 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:29:02,098 INFO L285 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-20 05:29:02,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:29:02 BoogieIcfgContainer [2019-11-20 05:29:02,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:29:02,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:29:02,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:29:02,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:29:02,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:29:01" (1/3) ... [2019-11-20 05:29:02,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db4172d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:29:02, skipping insertion in model container [2019-11-20 05:29:02,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:29:01" (2/3) ... [2019-11-20 05:29:02,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db4172d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:29:02, skipping insertion in model container [2019-11-20 05:29:02,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:29:02" (3/3) ... [2019-11-20 05:29:02,107 INFO L109 eAbstractionObserver]: Analyzing ICFG realloc1.c [2019-11-20 05:29:02,116 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:29:02,122 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-20 05:29:02,137 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-20 05:29:02,160 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:29:02,160 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 05:29:02,160 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:29:02,161 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:29:02,161 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:29:02,161 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:29:02,161 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:29:02,161 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:29:02,180 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-20 05:29:02,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 05:29:02,192 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:29:02,194 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:29:02,195 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-20 05:29:02,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:29:02,201 INFO L82 PathProgramCache]: Analyzing trace with hash 604141221, now seen corresponding path program 1 times [2019-11-20 05:29:02,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:29:02,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [942143593] [2019-11-20 05:29:02,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:29:02,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 05:29:02,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:29:02,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:02,376 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:29:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:02,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [942143593] [2019-11-20 05:29:02,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:29:02,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 05:29:02,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789775483] [2019-11-20 05:29:02,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:29:02,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:29:02,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:29:02,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:29:02,412 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2019-11-20 05:29:02,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:29:02,455 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2019-11-20 05:29:02,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:29:02,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-20 05:29:02,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:29:02,465 INFO L225 Difference]: With dead ends: 36 [2019-11-20 05:29:02,466 INFO L226 Difference]: Without dead ends: 32 [2019-11-20 05:29:02,467 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:29:02,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-20 05:29:02,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2019-11-20 05:29:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 05:29:02,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-11-20 05:29:02,497 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 8 [2019-11-20 05:29:02,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:29:02,497 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-11-20 05:29:02,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:29:02,498 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-11-20 05:29:02,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 05:29:02,498 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:29:02,498 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:29:02,702 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:02,702 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-20 05:29:02,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:29:02,702 INFO L82 PathProgramCache]: Analyzing trace with hash 604141275, now seen corresponding path program 1 times [2019-11-20 05:29:02,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:29:02,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [664138363] [2019-11-20 05:29:02,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:29:02,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 05:29:02,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:29:02,794 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:29:02,795 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:02,797 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:02,798 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:29:02,798 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:29:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:02,805 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:29:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:02,820 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [664138363] [2019-11-20 05:29:02,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:29:02,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 05:29:02,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148619130] [2019-11-20 05:29:02,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:29:02,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:29:02,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:29:02,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:29:02,823 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 3 states. [2019-11-20 05:29:02,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:29:02,898 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-11-20 05:29:02,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:29:02,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-20 05:29:02,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:29:02,899 INFO L225 Difference]: With dead ends: 30 [2019-11-20 05:29:02,899 INFO L226 Difference]: Without dead ends: 30 [2019-11-20 05:29:02,900 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:29:02,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-20 05:29:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2019-11-20 05:29:02,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-20 05:29:02,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-11-20 05:29:02,904 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 8 [2019-11-20 05:29:02,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:29:02,904 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-11-20 05:29:02,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:29:02,905 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-11-20 05:29:02,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 05:29:02,905 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:29:02,905 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:29:03,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:03,106 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-20 05:29:03,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:29:03,107 INFO L82 PathProgramCache]: Analyzing trace with hash 604141276, now seen corresponding path program 1 times [2019-11-20 05:29:03,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:29:03,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2038498239] [2019-11-20 05:29:03,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:29:03,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 05:29:03,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:29:03,200 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:29:03,201 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:03,221 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:03,221 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:29:03,222 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-20 05:29:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:03,239 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:29:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:03,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2038498239] [2019-11-20 05:29:03,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:29:03,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 05:29:03,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947950266] [2019-11-20 05:29:03,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:29:03,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:29:03,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:29:03,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:29:03,327 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 4 states. [2019-11-20 05:29:03,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:29:03,590 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2019-11-20 05:29:03,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:29:03,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-20 05:29:03,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:29:03,594 INFO L225 Difference]: With dead ends: 45 [2019-11-20 05:29:03,594 INFO L226 Difference]: Without dead ends: 45 [2019-11-20 05:29:03,594 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:29:03,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-20 05:29:03,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33. [2019-11-20 05:29:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 05:29:03,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2019-11-20 05:29:03,604 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 8 [2019-11-20 05:29:03,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:29:03,604 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2019-11-20 05:29:03,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:29:03,605 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2019-11-20 05:29:03,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 05:29:03,605 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:29:03,605 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:29:03,816 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:03,817 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-20 05:29:03,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:29:03,817 INFO L82 PathProgramCache]: Analyzing trace with hash -564596971, now seen corresponding path program 1 times [2019-11-20 05:29:03,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:29:03,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1513672410] [2019-11-20 05:29:03,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:29:03,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 05:29:03,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:29:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:03,900 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:29:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:03,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1513672410] [2019-11-20 05:29:03,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:29:03,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-11-20 05:29:03,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575308608] [2019-11-20 05:29:03,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 05:29:03,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:29:03,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 05:29:03,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-20 05:29:03,931 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 6 states. [2019-11-20 05:29:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:29:04,040 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2019-11-20 05:29:04,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 05:29:04,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-20 05:29:04,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:29:04,044 INFO L225 Difference]: With dead ends: 41 [2019-11-20 05:29:04,044 INFO L226 Difference]: Without dead ends: 41 [2019-11-20 05:29:04,045 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:29:04,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-20 05:29:04,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-11-20 05:29:04,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-20 05:29:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2019-11-20 05:29:04,050 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 13 [2019-11-20 05:29:04,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:29:04,050 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2019-11-20 05:29:04,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 05:29:04,050 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2019-11-20 05:29:04,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 05:29:04,051 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:29:04,051 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:29:04,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:04,256 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-20 05:29:04,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:29:04,257 INFO L82 PathProgramCache]: Analyzing trace with hash -768623518, now seen corresponding path program 1 times [2019-11-20 05:29:04,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:29:04,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [328748565] [2019-11-20 05:29:04,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:29:04,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 05:29:04,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:29:04,366 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:29:04,367 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,377 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:04,377 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:29:04,377 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-20 05:29:04,439 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:04,439 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:29:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:04,929 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [328748565] [2019-11-20 05:29:04,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:29:04,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2019-11-20 05:29:04,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360260446] [2019-11-20 05:29:04,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 05:29:04,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:29:04,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 05:29:04,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-20 05:29:04,931 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 9 states. [2019-11-20 05:29:05,226 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2019-11-20 05:29:05,521 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2019-11-20 05:29:06,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:29:06,022 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2019-11-20 05:29:06,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:29:06,024 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2019-11-20 05:29:06,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:29:06,025 INFO L225 Difference]: With dead ends: 73 [2019-11-20 05:29:06,026 INFO L226 Difference]: Without dead ends: 73 [2019-11-20 05:29:06,026 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:29:06,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-20 05:29:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 49. [2019-11-20 05:29:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-20 05:29:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2019-11-20 05:29:06,034 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 16 [2019-11-20 05:29:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:29:06,034 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2019-11-20 05:29:06,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 05:29:06,035 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2019-11-20 05:29:06,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-20 05:29:06,036 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:29:06,036 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:29:06,238 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:06,238 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-20 05:29:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:29:06,239 INFO L82 PathProgramCache]: Analyzing trace with hash 304700076, now seen corresponding path program 2 times [2019-11-20 05:29:06,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:29:06,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1315546998] [2019-11-20 05:29:06,240 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:06,303 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 05:29:06,304 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:29:06,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:29:06,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:29:06,358 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-20 05:29:06,358 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:29:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-20 05:29:06,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1315546998] [2019-11-20 05:29:06,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:29:06,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 4 [2019-11-20 05:29:06,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422100563] [2019-11-20 05:29:06,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 05:29:06,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:29:06,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 05:29:06,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:29:06,405 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 5 states. [2019-11-20 05:29:06,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:29:06,488 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2019-11-20 05:29:06,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:29:06,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-11-20 05:29:06,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:29:06,490 INFO L225 Difference]: With dead ends: 51 [2019-11-20 05:29:06,490 INFO L226 Difference]: Without dead ends: 51 [2019-11-20 05:29:06,490 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:29:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-20 05:29:06,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2019-11-20 05:29:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-20 05:29:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2019-11-20 05:29:06,495 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 25 [2019-11-20 05:29:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:29:06,496 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2019-11-20 05:29:06,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 05:29:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2019-11-20 05:29:06,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 05:29:06,497 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:29:06,497 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:29:06,702 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:06,702 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-20 05:29:06,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:29:06,703 INFO L82 PathProgramCache]: Analyzing trace with hash 758998927, now seen corresponding path program 1 times [2019-11-20 05:29:06,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:29:06,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1413386932] [2019-11-20 05:29:06,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:29:06,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 05:29:06,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:29:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:06,832 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:29:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:06,988 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1413386932] [2019-11-20 05:29:06,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:29:06,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-20 05:29:06,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402423092] [2019-11-20 05:29:06,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 05:29:06,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:29:06,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 05:29:06,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-20 05:29:06,990 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 12 states. [2019-11-20 05:29:07,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:29:07,383 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2019-11-20 05:29:07,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 05:29:07,384 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2019-11-20 05:29:07,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:29:07,385 INFO L225 Difference]: With dead ends: 66 [2019-11-20 05:29:07,385 INFO L226 Difference]: Without dead ends: 66 [2019-11-20 05:29:07,386 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2019-11-20 05:29:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-20 05:29:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2019-11-20 05:29:07,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-20 05:29:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2019-11-20 05:29:07,392 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 27 [2019-11-20 05:29:07,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:29:07,393 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2019-11-20 05:29:07,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 05:29:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2019-11-20 05:29:07,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 05:29:07,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:29:07,394 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:29:07,594 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:07,595 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-20 05:29:07,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:29:07,595 INFO L82 PathProgramCache]: Analyzing trace with hash -955804306, now seen corresponding path program 2 times [2019-11-20 05:29:07,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:29:07,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [590367194] [2019-11-20 05:29:07,596 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:07,732 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 05:29:07,735 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:29:07,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 05:29:07,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:29:07,747 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:29:07,748 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:29:07,754 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:29:07,754 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:29:07,754 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-20 05:29:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:07,868 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:29:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:29:09,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [590367194] [2019-11-20 05:29:09,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:29:09,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2019-11-20 05:29:09,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569332519] [2019-11-20 05:29:09,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 05:29:09,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:29:09,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 05:29:09,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2019-11-20 05:29:09,364 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 18 states. [2019-11-20 05:29:11,670 WARN L191 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-11-20 05:29:12,826 WARN L191 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-11-20 05:29:14,129 WARN L191 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-11-20 05:29:14,834 WARN L191 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2019-11-20 05:29:16,053 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-11-20 05:29:16,609 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-11-20 05:29:17,284 WARN L191 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-11-20 05:29:17,730 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-11-20 05:29:18,319 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2019-11-20 05:29:19,111 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2019-11-20 05:29:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:29:19,502 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2019-11-20 05:29:19,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-20 05:29:19,504 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 32 [2019-11-20 05:29:19,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:29:19,505 INFO L225 Difference]: With dead ends: 116 [2019-11-20 05:29:19,505 INFO L226 Difference]: Without dead ends: 116 [2019-11-20 05:29:19,506 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=296, Invalid=516, Unknown=0, NotChecked=0, Total=812 [2019-11-20 05:29:19,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-11-20 05:29:19,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2019-11-20 05:29:19,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-20 05:29:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2019-11-20 05:29:19,513 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 32 [2019-11-20 05:29:19,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:29:19,514 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2019-11-20 05:29:19,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 05:29:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2019-11-20 05:29:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-20 05:29:19,515 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:29:19,515 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:29:19,718 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:19,718 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-20 05:29:19,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:29:19,718 INFO L82 PathProgramCache]: Analyzing trace with hash -343684163, now seen corresponding path program 2 times [2019-11-20 05:29:19,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:29:19,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1792759747] [2019-11-20 05:29:19,719 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:20,018 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 05:29:20,018 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-11-20 05:29:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:29:20,365 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 05:29:20,365 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 05:29:20,565 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:29:20,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:29:20 BoogieIcfgContainer [2019-11-20 05:29:20,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 05:29:20,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:29:20,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:29:20,601 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:29:20,602 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:29:02" (3/4) ... [2019-11-20 05:29:20,604 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 05:29:20,650 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_09b34aaf-8930-46ea-9dd1-f8dac3e6023b/bin/uautomizer/witness.graphml [2019-11-20 05:29:20,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:29:20,656 INFO L168 Benchmark]: Toolchain (without parser) took 19304.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -203.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:29:20,657 INFO L168 Benchmark]: CDTParser took 0.85 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:29:20,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -186.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:29:20,658 INFO L168 Benchmark]: Boogie Preprocessor took 56.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:29:20,658 INFO L168 Benchmark]: RCFGBuilder took 340.45 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:29:20,658 INFO L168 Benchmark]: TraceAbstraction took 18497.99 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 26.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -47.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:29:20,659 INFO L168 Benchmark]: Witness Printer took 51.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:29:20,661 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.85 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 349.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -186.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.75 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 340.45 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18497.99 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 26.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -47.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 51.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L8] char* p = malloc(10 * sizeof(int)); [L10] int i = 0; VAL [i=0, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND TRUE i < 10 VAL [i=0, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=0, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] i++ VAL [i=1, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND TRUE i < 10 VAL [i=1, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=1, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] i++ VAL [i=2, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND TRUE i < 10 VAL [i=2, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=2, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] i++ VAL [i=3, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND TRUE i < 10 VAL [i=3, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=3, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] i++ VAL [i=4, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND TRUE i < 10 VAL [i=4, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=4, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] i++ VAL [i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND TRUE i < 10 VAL [i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] i++ VAL [i=6, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND TRUE i < 10 VAL [i=6, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=6, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] i++ VAL [i=7, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND TRUE i < 10 VAL [i=7, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=7, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] i++ VAL [i=8, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND TRUE i < 10 VAL [i=8, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=8, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] i++ VAL [i=9, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND TRUE i < 10 VAL [i=9, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=9, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] i++ VAL [i=10, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND FALSE !(i < 10) VAL [i=10, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L14] free(p) VAL [i=10, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L14] free(p) VAL [i=10, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L14] free(p) [L16] p[2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 8 error locations. Result: UNSAFE, OverallTime: 18.4s, OverallIterations: 9, TraceHistogramMax: 10, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 191 SDtfs, 404 SDslu, 448 SDs, 0 SdLazy, 629 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 219 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred 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, 8 MinimizatonAttempts, 85 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 188 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 258 ConstructedInterpolants, 0 QuantifiedInterpolants, 52103 SizeOfPredicates, 15 NumberOfNonLiveVariables, 374 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 56/274 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 incorrect! Received shutdown request...