./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/freeAlloca.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/freeAlloca.c -s /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/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 bd24d7b29a77a6b0da9f8cbc1fae4e00216bc104 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:02:38,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:02:38,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:02:38,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:02:38,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:02:38,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:02:38,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:02:38,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:02:38,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:02:38,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:02:38,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:02:38,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:02:38,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:02:38,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:02:38,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:02:38,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:02:38,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:02:38,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:02:38,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:02:38,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:02:38,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:02:38,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:02:38,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:02:38,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:02:38,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:02:38,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:02:38,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:02:38,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:02:38,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:02:38,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:02:38,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:02:38,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:02:38,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:02:38,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:02:38,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:02:38,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:02:38,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:02:38,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:02:38,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:02:38,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:02:38,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:02:38,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 17:02:38,239 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:02:38,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:02:38,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:02:38,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:02:38,240 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:02:38,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:02:38,240 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:02:38,241 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:02:38,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:02:38,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:02:38,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:02:38,241 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 17:02:38,241 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 17:02:38,241 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 17:02:38,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:02:38,241 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 17:02:38,241 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:02:38,242 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:02:38,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:02:38,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:02:38,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:02:38,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:02:38,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:02:38,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:02:38,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:02:38,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:02:38,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:02:38,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:02:38,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/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 -> bd24d7b29a77a6b0da9f8cbc1fae4e00216bc104 [2019-12-07 17:02:38,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:02:38,350 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:02:38,352 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:02:38,353 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:02:38,353 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:02:38,354 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/freeAlloca.c [2019-12-07 17:02:38,391 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/data/e7387ba1b/723a775d08f942beb2c4e976c5713536/FLAG6e9e3ff86 [2019-12-07 17:02:38,795 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:02:38,795 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/sv-benchmarks/c/memsafety-ext3/freeAlloca.c [2019-12-07 17:02:38,799 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/data/e7387ba1b/723a775d08f942beb2c4e976c5713536/FLAG6e9e3ff86 [2019-12-07 17:02:38,807 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/data/e7387ba1b/723a775d08f942beb2c4e976c5713536 [2019-12-07 17:02:38,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:02:38,810 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 17:02:38,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:02:38,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:02:38,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:02:38,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:02:38" (1/1) ... [2019-12-07 17:02:38,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eb66a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:38, skipping insertion in model container [2019-12-07 17:02:38,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:02:38" (1/1) ... [2019-12-07 17:02:38,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:02:38,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:02:38,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:02:38,964 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:02:38,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:02:38,985 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:02:38,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:38 WrapperNode [2019-12-07 17:02:38,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:02:38,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:02:38,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:02:38,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:02:38,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:38" (1/1) ... [2019-12-07 17:02:38,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:38" (1/1) ... [2019-12-07 17:02:38,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:38" (1/1) ... [2019-12-07 17:02:38,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:38" (1/1) ... [2019-12-07 17:02:39,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:38" (1/1) ... [2019-12-07 17:02:39,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:38" (1/1) ... [2019-12-07 17:02:39,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:38" (1/1) ... [2019-12-07 17:02:39,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:02:39,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:02:39,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:02:39,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:02:39,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/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 [2019-12-07 17:02:39,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 17:02:39,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:02:39,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 17:02:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-12-07 17:02:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-12-07 17:02:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-12-07 17:02:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 17:02:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:02:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 17:02:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 17:02:39,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:02:39,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 17:02:39,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:02:39,176 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:02:39,176 INFO L287 CfgBuilder]: Removed 1 assume(true) statements. [2019-12-07 17:02:39,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:02:39 BoogieIcfgContainer [2019-12-07 17:02:39,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:02:39,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:02:39,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:02:39,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:02:39,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:02:38" (1/3) ... [2019-12-07 17:02:39,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac70019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:02:39, skipping insertion in model container [2019-12-07 17:02:39,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:38" (2/3) ... [2019-12-07 17:02:39,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac70019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:02:39, skipping insertion in model container [2019-12-07 17:02:39,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:02:39" (3/3) ... [2019-12-07 17:02:39,182 INFO L109 eAbstractionObserver]: Analyzing ICFG freeAlloca.c [2019-12-07 17:02:39,188 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:02:39,193 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-12-07 17:02:39,200 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-12-07 17:02:39,212 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:02:39,212 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 17:02:39,212 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:02:39,213 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:02:39,213 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:02:39,213 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:02:39,213 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:02:39,213 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:02:39,223 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-12-07 17:02:39,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 17:02:39,228 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:39,229 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:39,229 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:39,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:39,233 INFO L82 PathProgramCache]: Analyzing trace with hash 996996062, now seen corresponding path program 1 times [2019-12-07 17:02:39,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:39,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069742839] [2019-12-07 17:02:39,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:39,342 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069742839] [2019-12-07 17:02:39,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:02:39,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 17:02:39,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976047294] [2019-12-07 17:02:39,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 17:02:39,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:39,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 17:02:39,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:02:39,358 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2019-12-07 17:02:39,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:39,408 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2019-12-07 17:02:39,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 17:02:39,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 17:02:39,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:39,415 INFO L225 Difference]: With dead ends: 28 [2019-12-07 17:02:39,416 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 17:02:39,417 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:02:39,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 17:02:39,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 17:02:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 17:02:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-12-07 17:02:39,439 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 8 [2019-12-07 17:02:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:39,440 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-12-07 17:02:39,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 17:02:39,440 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-12-07 17:02:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 17:02:39,440 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:39,440 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:39,440 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:39,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:39,441 INFO L82 PathProgramCache]: Analyzing trace with hash 996995752, now seen corresponding path program 1 times [2019-12-07 17:02:39,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:39,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084398868] [2019-12-07 17:02:39,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:39,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084398868] [2019-12-07 17:02:39,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:02:39,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 17:02:39,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690511244] [2019-12-07 17:02:39,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:02:39,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:39,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:02:39,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:02:39,477 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 4 states. [2019-12-07 17:02:39,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:39,513 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-12-07 17:02:39,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:02:39,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 17:02:39,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:39,514 INFO L225 Difference]: With dead ends: 31 [2019-12-07 17:02:39,514 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 17:02:39,515 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:02:39,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 17:02:39,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2019-12-07 17:02:39,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 17:02:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-12-07 17:02:39,519 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 8 [2019-12-07 17:02:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:39,519 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-12-07 17:02:39,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:02:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-12-07 17:02:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 17:02:39,520 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:39,520 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:39,520 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:39,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:39,520 INFO L82 PathProgramCache]: Analyzing trace with hash 996995806, now seen corresponding path program 1 times [2019-12-07 17:02:39,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:39,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762027237] [2019-12-07 17:02:39,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:39,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762027237] [2019-12-07 17:02:39,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:02:39,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 17:02:39,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529164095] [2019-12-07 17:02:39,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:02:39,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:39,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:02:39,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:02:39,568 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 4 states. [2019-12-07 17:02:39,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:39,608 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-12-07 17:02:39,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:02:39,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 17:02:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:39,609 INFO L225 Difference]: With dead ends: 30 [2019-12-07 17:02:39,609 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 17:02:39,609 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:02:39,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 17:02:39,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2019-12-07 17:02:39,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 17:02:39,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-12-07 17:02:39,612 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 8 [2019-12-07 17:02:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:39,613 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-12-07 17:02:39,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:02:39,613 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-12-07 17:02:39,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 17:02:39,613 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:39,613 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:39,613 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:39,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:39,614 INFO L82 PathProgramCache]: Analyzing trace with hash 996995805, now seen corresponding path program 1 times [2019-12-07 17:02:39,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:39,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090354205] [2019-12-07 17:02:39,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:39,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090354205] [2019-12-07 17:02:39,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:02:39,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 17:02:39,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637636295] [2019-12-07 17:02:39,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:02:39,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:39,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:02:39,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:02:39,637 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 4 states. [2019-12-07 17:02:39,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:39,668 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-12-07 17:02:39,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:02:39,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 17:02:39,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:39,669 INFO L225 Difference]: With dead ends: 25 [2019-12-07 17:02:39,669 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 17:02:39,669 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:02:39,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 17:02:39,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-12-07 17:02:39,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 17:02:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-12-07 17:02:39,672 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 8 [2019-12-07 17:02:39,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:39,672 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-12-07 17:02:39,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:02:39,672 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-12-07 17:02:39,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 17:02:39,672 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:39,672 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:39,673 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:39,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:39,673 INFO L82 PathProgramCache]: Analyzing trace with hash 63449068, now seen corresponding path program 1 times [2019-12-07 17:02:39,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:39,673 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335472300] [2019-12-07 17:02:39,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 17:02:39,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335472300] [2019-12-07 17:02:39,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:02:39,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 17:02:39,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603312845] [2019-12-07 17:02:39,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:02:39,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:39,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:02:39,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:02:39,705 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 4 states. [2019-12-07 17:02:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:39,731 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-12-07 17:02:39,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:02:39,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-07 17:02:39,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:39,732 INFO L225 Difference]: With dead ends: 22 [2019-12-07 17:02:39,732 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 17:02:39,732 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:02:39,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 17:02:39,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-07 17:02:39,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 17:02:39,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-12-07 17:02:39,734 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 12 [2019-12-07 17:02:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:39,734 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-12-07 17:02:39,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:02:39,734 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-12-07 17:02:39,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 17:02:39,735 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:39,735 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:39,735 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:39,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:39,735 INFO L82 PathProgramCache]: Analyzing trace with hash 63449121, now seen corresponding path program 1 times [2019-12-07 17:02:39,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:39,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131174806] [2019-12-07 17:02:39,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:39,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131174806] [2019-12-07 17:02:39,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:02:39,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 17:02:39,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039015783] [2019-12-07 17:02:39,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:02:39,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:39,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:02:39,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:02:39,796 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2019-12-07 17:02:39,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:39,830 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2019-12-07 17:02:39,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:02:39,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-12-07 17:02:39,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:39,831 INFO L225 Difference]: With dead ends: 23 [2019-12-07 17:02:39,831 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 17:02:39,831 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:02:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 17:02:39,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2019-12-07 17:02:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 17:02:39,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-12-07 17:02:39,833 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 12 [2019-12-07 17:02:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:39,834 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-12-07 17:02:39,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:02:39,834 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-12-07 17:02:39,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 17:02:39,834 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:39,834 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:39,834 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:39,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:39,835 INFO L82 PathProgramCache]: Analyzing trace with hash 425550780, now seen corresponding path program 1 times [2019-12-07 17:02:39,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:39,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156234781] [2019-12-07 17:02:39,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:39,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156234781] [2019-12-07 17:02:39,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053617223] [2019-12-07 17:02:39,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:39,888 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 17:02:39,892 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:02:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:39,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:02:39,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-12-07 17:02:39,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716838107] [2019-12-07 17:02:39,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:02:39,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:39,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:02:39,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:02:39,913 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2019-12-07 17:02:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:39,936 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-12-07 17:02:39,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:02:39,937 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-12-07 17:02:39,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:39,937 INFO L225 Difference]: With dead ends: 27 [2019-12-07 17:02:39,937 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 17:02:39,938 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:02:39,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 17:02:39,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2019-12-07 17:02:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 17:02:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-12-07 17:02:39,940 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 15 [2019-12-07 17:02:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:39,940 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-12-07 17:02:39,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:02:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-12-07 17:02:39,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 17:02:39,941 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:39,941 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:40,142 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:40,143 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:40,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:40,143 INFO L82 PathProgramCache]: Analyzing trace with hash 316362009, now seen corresponding path program 2 times [2019-12-07 17:02:40,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:40,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980930801] [2019-12-07 17:02:40,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:40,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980930801] [2019-12-07 17:02:40,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703302678] [2019-12-07 17:02:40,227 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:40,253 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-12-07 17:02:40,253 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:02:40,254 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:02:40,255 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:02:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 17:02:40,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 17:02:40,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2019-12-07 17:02:40,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664043033] [2019-12-07 17:02:40,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:02:40,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:40,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:02:40,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:02:40,299 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2019-12-07 17:02:40,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:40,332 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-12-07 17:02:40,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:02:40,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-12-07 17:02:40,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:40,333 INFO L225 Difference]: With dead ends: 26 [2019-12-07 17:02:40,333 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 17:02:40,333 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:02:40,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 17:02:40,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-07 17:02:40,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 17:02:40,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-12-07 17:02:40,336 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 19 [2019-12-07 17:02:40,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:40,336 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-12-07 17:02:40,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:02:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-12-07 17:02:40,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 17:02:40,336 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:40,337 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:40,537 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:40,538 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:40,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:40,539 INFO L82 PathProgramCache]: Analyzing trace with hash 316354064, now seen corresponding path program 1 times [2019-12-07 17:02:40,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:40,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059212661] [2019-12-07 17:02:40,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:40,667 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059212661] [2019-12-07 17:02:40,667 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081188984] [2019-12-07 17:02:40,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:40,698 INFO L264 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:02:40,699 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:02:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:40,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:02:40,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-12-07 17:02:40,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211190858] [2019-12-07 17:02:40,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:02:40,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:40,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:02:40,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:02:40,709 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2019-12-07 17:02:40,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:40,740 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2019-12-07 17:02:40,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:02:40,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-12-07 17:02:40,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:40,741 INFO L225 Difference]: With dead ends: 31 [2019-12-07 17:02:40,741 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 17:02:40,741 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:02:40,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 17:02:40,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2019-12-07 17:02:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 17:02:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-12-07 17:02:40,744 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 19 [2019-12-07 17:02:40,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:40,744 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-12-07 17:02:40,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:02:40,745 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-12-07 17:02:40,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-07 17:02:40,745 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:40,745 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:40,946 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:40,948 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:40,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:40,949 INFO L82 PathProgramCache]: Analyzing trace with hash -564453139, now seen corresponding path program 2 times [2019-12-07 17:02:40,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:40,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045704205] [2019-12-07 17:02:40,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:41,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045704205] [2019-12-07 17:02:41,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747636303] [2019-12-07 17:02:41,006 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:41,036 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:02:41,036 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:02:41,037 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 17:02:41,039 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:02:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:41,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:02:41,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-12-07 17:02:41,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005597362] [2019-12-07 17:02:41,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 17:02:41,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:41,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 17:02:41,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:02:41,052 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 8 states. [2019-12-07 17:02:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:41,088 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2019-12-07 17:02:41,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:02:41,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-12-07 17:02:41,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:41,090 INFO L225 Difference]: With dead ends: 35 [2019-12-07 17:02:41,090 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 17:02:41,090 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:02:41,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 17:02:41,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2019-12-07 17:02:41,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 17:02:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2019-12-07 17:02:41,093 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2019-12-07 17:02:41,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:41,093 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2019-12-07 17:02:41,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 17:02:41,093 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2019-12-07 17:02:41,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 17:02:41,094 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:41,094 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:41,294 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:41,295 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:41,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:41,297 INFO L82 PathProgramCache]: Analyzing trace with hash 817651018, now seen corresponding path program 3 times [2019-12-07 17:02:41,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:41,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661920874] [2019-12-07 17:02:41,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:41,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661920874] [2019-12-07 17:02:41,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830739866] [2019-12-07 17:02:41,346 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:41,376 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-07 17:02:41,376 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:02:41,377 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:02:41,378 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:02:41,388 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:41,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:02:41,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2019-12-07 17:02:41,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218031804] [2019-12-07 17:02:41,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 17:02:41,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:41,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 17:02:41,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:02:41,390 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 9 states. [2019-12-07 17:02:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:41,432 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2019-12-07 17:02:41,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 17:02:41,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2019-12-07 17:02:41,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:41,433 INFO L225 Difference]: With dead ends: 39 [2019-12-07 17:02:41,433 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 17:02:41,434 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:02:41,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 17:02:41,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2019-12-07 17:02:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 17:02:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2019-12-07 17:02:41,437 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 27 [2019-12-07 17:02:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:41,438 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2019-12-07 17:02:41,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 17:02:41,438 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2019-12-07 17:02:41,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 17:02:41,439 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:41,439 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:41,639 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:41,641 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:41,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:41,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1120001241, now seen corresponding path program 4 times [2019-12-07 17:02:41,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:41,643 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090197313] [2019-12-07 17:02:41,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:41,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090197313] [2019-12-07 17:02:41,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559051359] [2019-12-07 17:02:41,745 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:41,769 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:02:41,769 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:02:41,770 INFO L264 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 17:02:41,771 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:02:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:41,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:02:41,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2019-12-07 17:02:41,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892072107] [2019-12-07 17:02:41,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 17:02:41,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:41,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 17:02:41,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-12-07 17:02:41,783 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 10 states. [2019-12-07 17:02:41,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:41,817 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2019-12-07 17:02:41,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 17:02:41,818 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2019-12-07 17:02:41,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:41,818 INFO L225 Difference]: With dead ends: 43 [2019-12-07 17:02:41,818 INFO L226 Difference]: Without dead ends: 43 [2019-12-07 17:02:41,819 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-12-07 17:02:41,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-12-07 17:02:41,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-12-07 17:02:41,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 17:02:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2019-12-07 17:02:41,821 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 31 [2019-12-07 17:02:41,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:41,821 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2019-12-07 17:02:41,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 17:02:41,821 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2019-12-07 17:02:41,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-07 17:02:41,822 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:41,822 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:42,022 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:42,024 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:42,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:42,024 INFO L82 PathProgramCache]: Analyzing trace with hash 92254852, now seen corresponding path program 5 times [2019-12-07 17:02:42,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:42,025 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597825430] [2019-12-07 17:02:42,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:42,187 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597825430] [2019-12-07 17:02:42,187 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417370756] [2019-12-07 17:02:42,187 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:42,222 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-12-07 17:02:42,222 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:02:42,223 INFO L264 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:02:42,224 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:02:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:42,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:02:42,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2019-12-07 17:02:42,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190190922] [2019-12-07 17:02:42,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 17:02:42,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:42,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 17:02:42,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2019-12-07 17:02:42,235 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 11 states. [2019-12-07 17:02:42,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:42,278 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2019-12-07 17:02:42,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 17:02:42,278 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2019-12-07 17:02:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:42,278 INFO L225 Difference]: With dead ends: 47 [2019-12-07 17:02:42,278 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 17:02:42,279 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2019-12-07 17:02:42,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 17:02:42,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2019-12-07 17:02:42,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-12-07 17:02:42,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2019-12-07 17:02:42,281 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 35 [2019-12-07 17:02:42,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:42,281 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2019-12-07 17:02:42,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 17:02:42,282 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2019-12-07 17:02:42,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-07 17:02:42,282 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:42,282 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:42,483 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:42,484 INFO L410 AbstractCegarLoop]: === Iteration 14 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:42,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:42,485 INFO L82 PathProgramCache]: Analyzing trace with hash 696273761, now seen corresponding path program 6 times [2019-12-07 17:02:42,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:42,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485396368] [2019-12-07 17:02:42,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:42,656 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:42,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485396368] [2019-12-07 17:02:42,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990905983] [2019-12-07 17:02:42,656 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:42,712 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-12-07 17:02:42,712 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:02:42,713 INFO L264 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 17:02:42,715 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:02:42,730 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:42,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:02:42,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2019-12-07 17:02:42,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756781566] [2019-12-07 17:02:42,731 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 17:02:42,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:42,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 17:02:42,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2019-12-07 17:02:42,732 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 12 states. [2019-12-07 17:02:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:42,783 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2019-12-07 17:02:42,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 17:02:42,783 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2019-12-07 17:02:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:42,784 INFO L225 Difference]: With dead ends: 51 [2019-12-07 17:02:42,784 INFO L226 Difference]: Without dead ends: 51 [2019-12-07 17:02:42,784 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2019-12-07 17:02:42,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-12-07 17:02:42,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2019-12-07 17:02:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-12-07 17:02:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2019-12-07 17:02:42,787 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 39 [2019-12-07 17:02:42,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:42,787 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2019-12-07 17:02:42,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 17:02:42,787 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2019-12-07 17:02:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-12-07 17:02:42,787 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:42,788 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:42,988 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:42,989 INFO L410 AbstractCegarLoop]: === Iteration 15 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:42,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:42,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1214304834, now seen corresponding path program 7 times [2019-12-07 17:02:42,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:42,991 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980679024] [2019-12-07 17:02:42,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:43,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980679024] [2019-12-07 17:02:43,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786325176] [2019-12-07 17:02:43,147 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:43,174 INFO L264 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 17:02:43,175 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:02:43,186 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:43,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:02:43,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2019-12-07 17:02:43,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447387711] [2019-12-07 17:02:43,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 17:02:43,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:43,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 17:02:43,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2019-12-07 17:02:43,187 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 13 states. [2019-12-07 17:02:43,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:43,230 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2019-12-07 17:02:43,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 17:02:43,231 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2019-12-07 17:02:43,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:43,231 INFO L225 Difference]: With dead ends: 55 [2019-12-07 17:02:43,231 INFO L226 Difference]: Without dead ends: 55 [2019-12-07 17:02:43,232 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2019-12-07 17:02:43,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-12-07 17:02:43,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2019-12-07 17:02:43,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 17:02:43,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2019-12-07 17:02:43,234 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 43 [2019-12-07 17:02:43,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:43,234 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2019-12-07 17:02:43,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 17:02:43,234 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2019-12-07 17:02:43,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-12-07 17:02:43,235 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:43,235 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:43,435 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:43,436 INFO L410 AbstractCegarLoop]: === Iteration 16 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:43,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:43,436 INFO L82 PathProgramCache]: Analyzing trace with hash 2090572187, now seen corresponding path program 8 times [2019-12-07 17:02:43,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:43,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630564455] [2019-12-07 17:02:43,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:43,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630564455] [2019-12-07 17:02:43,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452191104] [2019-12-07 17:02:43,512 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:43,540 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:02:43,541 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:02:43,541 INFO L264 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 17:02:43,543 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:02:43,553 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:43,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:02:43,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2019-12-07 17:02:43,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045990105] [2019-12-07 17:02:43,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 17:02:43,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:02:43,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 17:02:43,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2019-12-07 17:02:43,554 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 14 states. [2019-12-07 17:02:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:43,599 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2019-12-07 17:02:43,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 17:02:43,600 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2019-12-07 17:02:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:43,600 INFO L225 Difference]: With dead ends: 56 [2019-12-07 17:02:43,600 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 17:02:43,600 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2019-12-07 17:02:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 17:02:43,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-12-07 17:02:43,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 17:02:43,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2019-12-07 17:02:43,603 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 47 [2019-12-07 17:02:43,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:43,604 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2019-12-07 17:02:43,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 17:02:43,604 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2019-12-07 17:02:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-12-07 17:02:43,604 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:43,604 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:02:43,805 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:02:43,805 INFO L410 AbstractCegarLoop]: === Iteration 17 === [mainErr2REQUIRES_VIOLATION, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:02:43,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:43,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1402261240, now seen corresponding path program 9 times [2019-12-07 17:02:43,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:02:43,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291346187] [2019-12-07 17:02:43,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:02:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:02:43,873 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:02:43,873 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:02:43,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:02:43 BoogieIcfgContainer [2019-12-07 17:02:43,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:02:43,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:02:43,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:02:43,902 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:02:43,903 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:02:39" (3/4) ... [2019-12-07 17:02:43,904 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 17:02:43,940 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_72da6028-635f-43ea-a7d0-6b43e6f1be92/bin/uautomizer/witness.graphml [2019-12-07 17:02:43,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:02:43,941 INFO L168 Benchmark]: Toolchain (without parser) took 5130.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 943.5 MB in the beginning and 858.8 MB in the end (delta: 84.8 MB). Peak memory consumption was 179.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:02:43,941 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:02:43,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:02:43,942 INFO L168 Benchmark]: Boogie Preprocessor took 21.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:02:43,942 INFO L168 Benchmark]: RCFGBuilder took 169.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:02:43,942 INFO L168 Benchmark]: TraceAbstraction took 4724.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 865.5 MB in the end (delta: 202.4 MB). Peak memory consumption was 202.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:02:43,943 INFO L168 Benchmark]: Witness Printer took 37.84 ms. Allocated memory is still 1.1 GB. Free memory was 865.5 MB in the beginning and 858.8 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:02:43,944 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 174.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 169.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4724.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 865.5 MB in the end (delta: 202.4 MB). Peak memory consumption was 202.4 MB. Max. memory is 11.5 GB. * Witness Printer took 37.84 ms. Allocated memory is still 1.1 GB. Free memory was 865.5 MB in the beginning and 858.8 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L7] char *p = alloca(10 * sizeof(char)); [L9] int i = 0; VAL [alloca(10 * sizeof(char))={11:0}, i=0, p={11:0}] [L9] COND TRUE i < 10 [L10] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, alloca(10 * sizeof(char))={11:0}, i=0, p={11:0}] [L9] i++ VAL [alloca(10 * sizeof(char))={11:0}, i=1, p={11:0}] [L9] COND TRUE i < 10 [L10] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, alloca(10 * sizeof(char))={11:0}, i=1, p={11:0}] [L9] i++ VAL [alloca(10 * sizeof(char))={11:0}, i=2, p={11:0}] [L9] COND TRUE i < 10 [L10] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=97, alloca(10 * sizeof(char))={11:0}, i=2, p={11:0}] [L9] i++ VAL [alloca(10 * sizeof(char))={11:0}, i=3, p={11:0}] [L9] COND TRUE i < 10 [L10] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, alloca(10 * sizeof(char))={11:0}, i=3, p={11:0}] [L9] i++ VAL [alloca(10 * sizeof(char))={11:0}, i=4, p={11:0}] [L9] COND TRUE i < 10 [L10] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, alloca(10 * sizeof(char))={11:0}, i=4, p={11:0}] [L9] i++ VAL [alloca(10 * sizeof(char))={11:0}, i=5, p={11:0}] [L9] COND TRUE i < 10 [L10] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, alloca(10 * sizeof(char))={11:0}, i=5, p={11:0}] [L9] i++ VAL [alloca(10 * sizeof(char))={11:0}, i=6, p={11:0}] [L9] COND TRUE i < 10 [L10] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, alloca(10 * sizeof(char))={11:0}, i=6, p={11:0}] [L9] i++ VAL [alloca(10 * sizeof(char))={11:0}, i=7, p={11:0}] [L9] COND TRUE i < 10 [L10] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, alloca(10 * sizeof(char))={11:0}, i=7, p={11:0}] [L9] i++ VAL [alloca(10 * sizeof(char))={11:0}, i=8, p={11:0}] [L9] COND TRUE i < 10 [L10] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, alloca(10 * sizeof(char))={11:0}, i=8, p={11:0}] [L9] i++ VAL [alloca(10 * sizeof(char))={11:0}, i=9, p={11:0}] [L9] COND TRUE i < 10 [L10] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, alloca(10 * sizeof(char))={11:0}, i=9, p={11:0}] [L9] i++ VAL [alloca(10 * sizeof(char))={11:0}, i=10, p={11:0}] [L9] COND FALSE !(i < 10) VAL [alloca(10 * sizeof(char))={11:0}, i=10, p={11:0}] [L13] EXPR p[2] VAL [alloca(10 * sizeof(char))={11:0}, i=10, p={11:0}, p[2]=97] [L13] COND TRUE p[2] == 'a' [L14] free(p) VAL [alloca(10 * sizeof(char))={11:0}, i=10, p={11:0}] [L14] free(p) VAL [alloca(10 * sizeof(char))={11:0}, i=10, p={11:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 8 error locations. Result: UNSAFE, OverallTime: 4.6s, OverallIterations: 17, TraceHistogramMax: 10, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 243 SDtfs, 235 SDslu, 783 SDs, 0 SdLazy, 697 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 414 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=16, 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, 16 MinimizatonAttempts, 36 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 703 NumberOfCodeBlocks, 689 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 626 ConstructedInterpolants, 1 QuantifiedInterpolants, 53253 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1018 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 26 InterpolantComputations, 7 PerfectInterpolantSequences, 9/1065 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...