./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa 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_ad0faa58-802e-4e2a-9037-2b39596bae3a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/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 64bit --witnessprinter.graph.data.programhash 3f34751565a9d43a481fab038d13037e70cdccbf ..................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-25 08:46:02,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:02,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:02,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:02,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:02,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:02,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:02,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:02,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:02,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:02,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:02,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:02,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:02,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:02,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:02,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:02,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:02,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:02,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:02,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:02,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:02,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:02,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:02,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:02,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:02,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:02,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:02,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:02,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:02,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:02,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:02,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:02,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:02,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:02,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:02,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:02,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:02,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:02,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:02,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:02,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:02,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2019-11-25 08:46:02,193 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:02,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:02,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:02,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:02,204 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:02,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:02,205 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:46:02,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:46:02,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:02,205 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:46:02,206 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:46:02,206 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:46:02,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:46:02,207 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:46:02,207 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:46:02,208 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:46:02,208 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:02,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:02,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:02,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:46:02,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:46:02,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:02,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:02,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:46:02,210 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:46:02,210 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:46:02,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:46:02,210 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_ad0faa58-802e-4e2a-9037-2b39596bae3a/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f34751565a9d43a481fab038d13037e70cdccbf [2019-11-25 08:46:02,352 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:02,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:02,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:02,367 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:02,367 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:02,368 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c [2019-11-25 08:46:02,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/bin/uautomizer/data/2e0106ed8/e6b0457b09084882af3cac2c336b13b0/FLAG643b7ea17 [2019-11-25 08:46:02,808 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:02,809 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c [2019-11-25 08:46:02,814 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/bin/uautomizer/data/2e0106ed8/e6b0457b09084882af3cac2c336b13b0/FLAG643b7ea17 [2019-11-25 08:46:02,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/bin/uautomizer/data/2e0106ed8/e6b0457b09084882af3cac2c336b13b0 [2019-11-25 08:46:02,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:02,833 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:46:02,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:02,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:02,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:02,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:02" (1/1) ... [2019-11-25 08:46:02,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e50946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:02, skipping insertion in model container [2019-11-25 08:46:02,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:02" (1/1) ... [2019-11-25 08:46:02,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:02,866 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:03,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:03,179 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:03,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:03,211 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:03,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:03 WrapperNode [2019-11-25 08:46:03,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:03,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:03,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:03,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:03,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:03" (1/1) ... [2019-11-25 08:46:03,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:03" (1/1) ... [2019-11-25 08:46:03,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:03" (1/1) ... [2019-11-25 08:46:03,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:03" (1/1) ... [2019-11-25 08:46:03,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:03" (1/1) ... [2019-11-25 08:46:03,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:03" (1/1) ... [2019-11-25 08:46:03,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:03" (1/1) ... [2019-11-25 08:46:03,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:03,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:03,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:03,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:03,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/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 [2019-11-25 08:46:03,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:46:03,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:03,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:46:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-25 08:46:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-25 08:46:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-25 08:46:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:46:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:46:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:46:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:46:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:46:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:46:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:03,594 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:03,594 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-25 08:46:03,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:03 BoogieIcfgContainer [2019-11-25 08:46:03,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:03,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:46:03,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:46:03,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:46:03,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:46:02" (1/3) ... [2019-11-25 08:46:03,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91d311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:03, skipping insertion in model container [2019-11-25 08:46:03,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:03" (2/3) ... [2019-11-25 08:46:03,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91d311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:03, skipping insertion in model container [2019-11-25 08:46:03,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:03" (3/3) ... [2019-11-25 08:46:03,602 INFO L109 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-3.c [2019-11-25 08:46:03,611 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:46:03,616 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-25 08:46:03,629 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-25 08:46:03,644 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:46:03,644 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:46:03,645 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:46:03,645 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:03,645 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:03,645 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:46:03,645 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:03,645 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:46:03,659 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-25 08:46:03,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:46:03,667 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:03,670 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:03,670 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-25 08:46:03,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:03,676 INFO L82 PathProgramCache]: Analyzing trace with hash 222801388, now seen corresponding path program 1 times [2019-11-25 08:46:03,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:03,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [37964825] [2019-11-25 08:46:03,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/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 [2019-11-25 08:46:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:03,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:46:03,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:03,831 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 [2019-11-25 08:46:03,831 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:46:03,837 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:46:03,838 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:46:03,838 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:46:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:03,846 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:03,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [37964825] [2019-11-25 08:46:03,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:03,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:46:03,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380604889] [2019-11-25 08:46:03,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:03,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:03,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:03,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:03,873 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2019-11-25 08:46:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:03,937 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-11-25 08:46:03,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:03,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-25 08:46:03,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:03,947 INFO L225 Difference]: With dead ends: 25 [2019-11-25 08:46:03,948 INFO L226 Difference]: Without dead ends: 22 [2019-11-25 08:46:03,951 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:03,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-25 08:46:03,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-25 08:46:03,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-25 08:46:03,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-25 08:46:03,987 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 7 [2019-11-25 08:46:03,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:03,988 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-25 08:46:03,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:03,988 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-25 08:46:03,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:46:03,988 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:03,989 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:04,189 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:04,190 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-25 08:46:04,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:04,190 INFO L82 PathProgramCache]: Analyzing trace with hash 222801389, now seen corresponding path program 1 times [2019-11-25 08:46:04,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:04,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1778101457] [2019-11-25 08:46:04,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/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 [2019-11-25 08:46:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:04,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:46:04,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:04,270 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 [2019-11-25 08:46:04,270 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:46:04,281 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:46:04,281 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:46:04,281 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:46:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:04,293 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:04,344 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1778101457] [2019-11-25 08:46:04,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:04,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-25 08:46:04,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120034304] [2019-11-25 08:46:04,346 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:46:04,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:04,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:46:04,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:46:04,347 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 4 states. [2019-11-25 08:46:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:04,389 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-25 08:46:04,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:04,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-25 08:46:04,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:04,391 INFO L225 Difference]: With dead ends: 18 [2019-11-25 08:46:04,391 INFO L226 Difference]: Without dead ends: 18 [2019-11-25 08:46:04,392 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:46:04,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-25 08:46:04,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-25 08:46:04,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:46:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-25 08:46:04,395 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2019-11-25 08:46:04,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:04,395 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-25 08:46:04,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:46:04,396 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-25 08:46:04,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:46:04,396 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:04,396 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:04,597 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:04,597 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-25 08:46:04,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:04,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1751663173, now seen corresponding path program 1 times [2019-11-25 08:46:04,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:04,599 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [540528437] [2019-11-25 08:46:04,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/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 [2019-11-25 08:46:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:04,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:04,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:04,677 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:04,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [540528437] [2019-11-25 08:46:04,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:04,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 4 [2019-11-25 08:46:04,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714799439] [2019-11-25 08:46:04,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:46:04,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:04,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:46:04,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:46:04,698 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2019-11-25 08:46:04,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:04,734 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-11-25 08:46:04,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:46:04,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-25 08:46:04,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:04,736 INFO L225 Difference]: With dead ends: 17 [2019-11-25 08:46:04,736 INFO L226 Difference]: Without dead ends: 17 [2019-11-25 08:46:04,736 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:46:04,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-25 08:46:04,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-25 08:46:04,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-25 08:46:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-25 08:46:04,740 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2019-11-25 08:46:04,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:04,740 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-25 08:46:04,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:46:04,740 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-25 08:46:04,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-25 08:46:04,741 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:04,741 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:04,946 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:04,947 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-25 08:46:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:04,948 INFO L82 PathProgramCache]: Analyzing trace with hash -278868728, now seen corresponding path program 1 times [2019-11-25 08:46:04,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:04,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [821804852] [2019-11-25 08:46:04,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/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 [2019-11-25 08:46:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:05,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:46:05,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:05,053 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 [2019-11-25 08:46:05,053 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:46:05,056 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:46:05,056 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:46:05,056 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:46:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:05,107 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:09,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [821804852] [2019-11-25 08:46:09,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:09,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-25 08:46:09,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607851729] [2019-11-25 08:46:09,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:46:09,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:09,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:46:09,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=36, Unknown=2, NotChecked=0, Total=56 [2019-11-25 08:46:09,174 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2019-11-25 08:46:09,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:09,313 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-11-25 08:46:09,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:46:09,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2019-11-25 08:46:09,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:09,313 INFO L225 Difference]: With dead ends: 16 [2019-11-25 08:46:09,314 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:46:09,314 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=30, Invalid=58, Unknown=2, NotChecked=0, Total=90 [2019-11-25 08:46:09,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:46:09,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:46:09,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:46:09,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:46:09,315 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-11-25 08:46:09,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:09,315 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:09,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:46:09,315 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:46:09,315 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:46:09,516 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:09,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:46:09 BoogieIcfgContainer [2019-11-25 08:46:09,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:46:09,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:09,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:09,521 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:09,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:03" (3/4) ... [2019-11-25 08:46:09,524 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:46:09,530 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-25 08:46:09,530 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-25 08:46:09,534 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-25 08:46:09,534 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:46:09,535 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:46:09,535 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:46:09,570 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ad0faa58-802e-4e2a-9037-2b39596bae3a/bin/uautomizer/witness.graphml [2019-11-25 08:46:09,570 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:09,572 INFO L168 Benchmark]: Toolchain (without parser) took 6738.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -68.0 MB). Peak memory consumption was 69.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:09,572 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:09,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -187.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:09,573 INFO L168 Benchmark]: Boogie Preprocessor took 41.39 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. [2019-11-25 08:46:09,574 INFO L168 Benchmark]: RCFGBuilder took 341.66 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: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:09,574 INFO L168 Benchmark]: TraceAbstraction took 5923.78 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: 90.4 MB). Peak memory consumption was 90.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:09,575 INFO L168 Benchmark]: Witness Printer took 50.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:09,577 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 374.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -187.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.39 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 341.66 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: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5923.78 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: 90.4 MB). Peak memory consumption was 90.4 MB. Max. memory is 11.5 GB. * Witness Printer took 50.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 10 error locations. Result: SAFE, OverallTime: 5.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 86 SDslu, 28 SDs, 0 SdLazy, 55 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 1 QuantifiedInterpolants, 2722 SizeOfPredicates, 8 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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...