./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0019-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0019-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg --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 40afad058466dec508429aba14a695fa830becbd8e90e3307f02f796ff077dad ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0019-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg --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 40afad058466dec508429aba14a695fa830becbd8e90e3307f02f796ff077dad ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:42:47,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:42:47,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:42:47,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:42:47,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:42:47,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:42:47,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:42:47,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:42:47,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:42:47,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:42:47,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:42:47,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:42:47,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:42:47,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:42:47,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:42:47,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:42:47,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:42:47,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:42:47,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:42:47,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:42:47,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:42:47,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:42:47,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:42:47,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:42:47,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:42:47,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:42:47,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:42:47,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:42:47,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:42:47,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:42:47,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:42:47,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:42:47,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:42:47,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:42:47,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:42:47,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:42:47,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:42:47,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:42:47,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:42:47,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:42:47,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:42:47,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 08:42:48,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:42:48,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:42:48,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:42:48,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:42:48,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:42:48,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:42:48,052 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:42:48,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:42:48,052 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:42:48,053 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:42:48,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:42:48,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:42:48,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:42:48,055 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:42:48,055 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:42:48,055 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:42:48,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:42:48,056 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:42:48,056 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:42:48,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:42:48,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:42:48,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:42:48,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:42:48,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:42:48,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:42:48,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:42:48,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:42:48,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:42:48,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:42:48,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40afad058466dec508429aba14a695fa830becbd8e90e3307f02f796ff077dad [2021-10-28 08:42:48,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:42:48,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:42:48,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:42:48,386 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:42:48,387 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:42:48,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety/test-0019-2.i [2021-10-28 08:42:48,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/data/156ea09fd/0045a7de324a421387da91d038f14ac0/FLAGb076f3e1c [2021-10-28 08:42:49,227 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:42:49,227 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/sv-benchmarks/c/memsafety/test-0019-2.i [2021-10-28 08:42:49,252 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/data/156ea09fd/0045a7de324a421387da91d038f14ac0/FLAGb076f3e1c [2021-10-28 08:42:49,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/data/156ea09fd/0045a7de324a421387da91d038f14ac0 [2021-10-28 08:42:49,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:42:49,275 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:42:49,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:42:49,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:42:49,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:42:49,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:42:49" (1/1) ... [2021-10-28 08:42:49,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b7345b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:49, skipping insertion in model container [2021-10-28 08:42:49,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:42:49" (1/1) ... [2021-10-28 08:42:49,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:42:49,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:42:49,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:42:49,697 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:42:49,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:42:49,784 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:42:49,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:49 WrapperNode [2021-10-28 08:42:49,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:42:49,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:42:49,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:42:49,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:42:49,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:49" (1/1) ... [2021-10-28 08:42:49,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:49" (1/1) ... [2021-10-28 08:42:49,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:49" (1/1) ... [2021-10-28 08:42:49,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:49" (1/1) ... [2021-10-28 08:42:49,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:49" (1/1) ... [2021-10-28 08:42:49,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:49" (1/1) ... [2021-10-28 08:42:49,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:49" (1/1) ... [2021-10-28 08:42:49,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:42:49,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:42:49,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:42:49,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:42:49,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:49" (1/1) ... [2021-10-28 08:42:49,884 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:42:49,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:49,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:42:49,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:42:49,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:42:49,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:42:49,958 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 08:42:49,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:42:49,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:42:49,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 08:42:49,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 08:42:49,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 08:42:49,959 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2021-10-28 08:42:49,960 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2021-10-28 08:42:49,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:42:49,960 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:42:49,960 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 08:42:49,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 08:42:49,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 08:42:49,961 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 08:42:49,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:42:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:42:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:42:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:42:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:42:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:42:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:42:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:42:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:42:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:42:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:42:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:42:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:42:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:42:49,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:42:49,965 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:42:49,965 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:42:49,965 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:42:49,966 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:42:49,966 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 08:42:49,966 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 08:42:49,966 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 08:42:49,967 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:42:49,967 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:42:49,967 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:42:49,967 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:42:49,967 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:42:49,968 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:42:49,968 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:42:49,968 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:42:49,968 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:42:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:42:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:42:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:42:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:42:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:42:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:42:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:42:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:42:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:42:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:42:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:42:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:42:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:42:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:42:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:42:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:42:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:42:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:42:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:42:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:42:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:42:49,974 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:42:49,974 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:42:49,974 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:42:49,974 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:42:49,975 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:42:49,975 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:42:49,975 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:42:49,975 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:42:49,976 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:42:49,976 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:42:49,976 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:42:49,976 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 08:42:49,976 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:42:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 08:42:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:42:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:42:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 08:42:49,978 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:42:49,978 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:42:49,978 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:42:49,978 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:42:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:42:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:42:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:42:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:42:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:42:49,980 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:42:49,980 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:42:49,980 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:42:49,980 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:42:49,981 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:42:49,981 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:42:49,981 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:42:49,981 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:42:49,981 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:42:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:42:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:42:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:42:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:42:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:42:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:42:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:42:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:42:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:42:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:42:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:42:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:42:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:42:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:42:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:42:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:42:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:42:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:42:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:42:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:42:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2021-10-28 08:42:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:42:49,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:42:49,987 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2021-10-28 08:42:49,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:42:49,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:42:49,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:42:49,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:42:49,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:42:49,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:42:49,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:42:49,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:42:50,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:42:50,680 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-28 08:42:50,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:42:50 BoogieIcfgContainer [2021-10-28 08:42:50,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:42:50,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:42:50,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:42:50,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:42:50,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:42:49" (1/3) ... [2021-10-28 08:42:50,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b32ea2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:42:50, skipping insertion in model container [2021-10-28 08:42:50,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:49" (2/3) ... [2021-10-28 08:42:50,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b32ea2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:42:50, skipping insertion in model container [2021-10-28 08:42:50,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:42:50" (3/3) ... [2021-10-28 08:42:50,698 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2021-10-28 08:42:50,704 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:42:50,704 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-10-28 08:42:50,782 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:42:50,792 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:42:50,792 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-10-28 08:42:50,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 08:42:50,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 08:42:50,825 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:50,825 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:50,826 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:42:50,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:50,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1420223000, now seen corresponding path program 1 times [2021-10-28 08:42:50,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:50,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070575483] [2021-10-28 08:42:50,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:50,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:51,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:42:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:51,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:51,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070575483] [2021-10-28 08:42:51,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070575483] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:51,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:51,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:42:51,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558400222] [2021-10-28 08:42:51,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:42:51,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:51,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:42:51,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:42:51,219 INFO L87 Difference]: Start difference. First operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:42:51,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:51,472 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-10-28 08:42:51,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:42:51,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 08:42:51,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:51,484 INFO L225 Difference]: With dead ends: 62 [2021-10-28 08:42:51,484 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 08:42:51,486 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:42:51,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 08:42:51,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2021-10-28 08:42:51,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 42 states have internal predecessors, (43), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:42:51,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-10-28 08:42:51,526 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2021-10-28 08:42:51,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:51,526 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-10-28 08:42:51,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:42:51,527 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-10-28 08:42:51,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 08:42:51,528 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:51,528 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:51,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:42:51,529 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:42:51,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:51,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1420222999, now seen corresponding path program 1 times [2021-10-28 08:42:51,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:51,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026367776] [2021-10-28 08:42:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:51,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:42:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:51,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:51,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026367776] [2021-10-28 08:42:51,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026367776] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:51,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:51,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:42:51,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803750956] [2021-10-28 08:42:51,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:42:51,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:51,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:42:51,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:42:51,682 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:42:51,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:51,932 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-10-28 08:42:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:42:51,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 08:42:51,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:51,934 INFO L225 Difference]: With dead ends: 58 [2021-10-28 08:42:51,934 INFO L226 Difference]: Without dead ends: 58 [2021-10-28 08:42:51,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:42:51,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-28 08:42:51,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2021-10-28 08:42:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 41 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:42:51,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-10-28 08:42:51,942 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2021-10-28 08:42:51,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:51,942 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-10-28 08:42:51,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:42:51,943 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-10-28 08:42:51,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:42:51,943 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:51,944 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:51,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:42:51,944 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_dataErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:42:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:51,945 INFO L85 PathProgramCache]: Analyzing trace with hash 965296970, now seen corresponding path program 1 times [2021-10-28 08:42:51,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:51,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850311218] [2021-10-28 08:42:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:51,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:52,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:42:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:52,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:52,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850311218] [2021-10-28 08:42:52,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850311218] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:52,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:52,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 08:42:52,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710356747] [2021-10-28 08:42:52,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:42:52,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:52,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:42:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:42:52,162 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:42:52,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:52,421 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-10-28 08:42:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:42:52,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 08:42:52,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:52,428 INFO L225 Difference]: With dead ends: 57 [2021-10-28 08:42:52,428 INFO L226 Difference]: Without dead ends: 57 [2021-10-28 08:42:52,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:42:52,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-28 08:42:52,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2021-10-28 08:42:52,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 40 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:42:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-10-28 08:42:52,438 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 11 [2021-10-28 08:42:52,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:52,438 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-10-28 08:42:52,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:42:52,439 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-10-28 08:42:52,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 08:42:52,441 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:52,442 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:52,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:42:52,442 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:42:52,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:52,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2075049684, now seen corresponding path program 1 times [2021-10-28 08:42:52,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:52,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290688896] [2021-10-28 08:42:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:52,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:52,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:42:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:52,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:42:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:52,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:52,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290688896] [2021-10-28 08:42:52,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290688896] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:52,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:52,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:42:52,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990217438] [2021-10-28 08:42:52,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 08:42:52,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:52,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 08:42:52,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:42:52,599 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:42:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:53,002 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-10-28 08:42:53,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:42:53,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-28 08:42:53,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:53,004 INFO L225 Difference]: With dead ends: 52 [2021-10-28 08:42:53,004 INFO L226 Difference]: Without dead ends: 52 [2021-10-28 08:42:53,005 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-28 08:42:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-28 08:42:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-10-28 08:42:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 38 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:42:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-10-28 08:42:53,012 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 17 [2021-10-28 08:42:53,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:53,012 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-10-28 08:42:53,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:42:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-10-28 08:42:53,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 08:42:53,014 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:53,014 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:53,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:42:53,014 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:42:53,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:53,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2075049683, now seen corresponding path program 1 times [2021-10-28 08:42:53,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:53,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767739087] [2021-10-28 08:42:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:53,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:53,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:42:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:53,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:42:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:53,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:53,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767739087] [2021-10-28 08:42:53,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767739087] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:53,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:53,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 08:42:53,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142961052] [2021-10-28 08:42:53,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 08:42:53,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:53,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 08:42:53,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-28 08:42:53,237 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 08:42:53,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:53,638 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-10-28 08:42:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:42:53,639 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-10-28 08:42:53,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:53,641 INFO L225 Difference]: With dead ends: 45 [2021-10-28 08:42:53,642 INFO L226 Difference]: Without dead ends: 45 [2021-10-28 08:42:53,642 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-10-28 08:42:53,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-28 08:42:53,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-10-28 08:42:53,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 34 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:42:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-28 08:42:53,647 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 17 [2021-10-28 08:42:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:53,648 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-28 08:42:53,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 08:42:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-28 08:42:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 08:42:53,649 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:53,650 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:53,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:42:53,650 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_dataErr4ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:42:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:53,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1129452196, now seen corresponding path program 1 times [2021-10-28 08:42:53,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:53,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096139582] [2021-10-28 08:42:53,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:53,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:42:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:53,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:42:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:53,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:53,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:53,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096139582] [2021-10-28 08:42:53,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096139582] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:53,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:53,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 08:42:53,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159639837] [2021-10-28 08:42:53,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:42:53,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:53,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:42:53,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:42:53,887 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:42:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:54,269 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-10-28 08:42:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 08:42:54,269 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-10-28 08:42:54,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:54,271 INFO L225 Difference]: With dead ends: 44 [2021-10-28 08:42:54,271 INFO L226 Difference]: Without dead ends: 44 [2021-10-28 08:42:54,271 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-28 08:42:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-28 08:42:54,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-10-28 08:42:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 33 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:42:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-10-28 08:42:54,276 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 22 [2021-10-28 08:42:54,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:54,276 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-10-28 08:42:54,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:42:54,276 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-10-28 08:42:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 08:42:54,277 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:54,277 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:54,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 08:42:54,278 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_dataErr5ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:42:54,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:54,278 INFO L85 PathProgramCache]: Analyzing trace with hash -653279632, now seen corresponding path program 1 times [2021-10-28 08:42:54,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:54,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990204598] [2021-10-28 08:42:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:54,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:54,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:42:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:54,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:42:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:54,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:54,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990204598] [2021-10-28 08:42:54,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990204598] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:54,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:54,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 08:42:54,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507491448] [2021-10-28 08:42:54,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:42:54,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:54,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:42:54,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:42:54,522 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:42:54,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:54,893 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-10-28 08:42:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 08:42:54,893 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-10-28 08:42:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:54,894 INFO L225 Difference]: With dead ends: 43 [2021-10-28 08:42:54,894 INFO L226 Difference]: Without dead ends: 43 [2021-10-28 08:42:54,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-28 08:42:54,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-28 08:42:54,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-10-28 08:42:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:42:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-10-28 08:42:54,899 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 23 [2021-10-28 08:42:54,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:54,900 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-10-28 08:42:54,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:42:54,900 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-10-28 08:42:54,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 08:42:54,901 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:54,901 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:54,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 08:42:54,902 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_dataErr6ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:42:54,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:54,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1223167966, now seen corresponding path program 1 times [2021-10-28 08:42:54,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:54,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4197072] [2021-10-28 08:42:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:54,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:42:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:55,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:42:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:55,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:55,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4197072] [2021-10-28 08:42:55,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4197072] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:55,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:55,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 08:42:55,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132892731] [2021-10-28 08:42:55,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:42:55,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:55,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:42:55,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:42:55,120 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:42:55,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:55,520 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-10-28 08:42:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:42:55,520 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-10-28 08:42:55,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:55,521 INFO L225 Difference]: With dead ends: 42 [2021-10-28 08:42:55,521 INFO L226 Difference]: Without dead ends: 42 [2021-10-28 08:42:55,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-10-28 08:42:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-28 08:42:55,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2021-10-28 08:42:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 31 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:42:55,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-10-28 08:42:55,526 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 24 [2021-10-28 08:42:55,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:55,527 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-10-28 08:42:55,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:42:55,527 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-10-28 08:42:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 08:42:55,528 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:55,528 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:55,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 08:42:55,529 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_dataErr7ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:42:55,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:55,529 INFO L85 PathProgramCache]: Analyzing trace with hash -736498638, now seen corresponding path program 1 times [2021-10-28 08:42:55,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:55,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266745180] [2021-10-28 08:42:55,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:55,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:42:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:55,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:42:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:55,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:55,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:55,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266745180] [2021-10-28 08:42:55,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266745180] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:55,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:55,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:42:55,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183153905] [2021-10-28 08:42:55,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:42:55,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:55,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:42:55,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:42:55,618 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:42:55,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:55,771 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-10-28 08:42:55,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:42:55,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-10-28 08:42:55,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:55,772 INFO L225 Difference]: With dead ends: 41 [2021-10-28 08:42:55,773 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 08:42:55,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:42:55,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 08:42:55,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-10-28 08:42:55,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:42:55,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-10-28 08:42:55,788 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 25 [2021-10-28 08:42:55,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:55,788 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-10-28 08:42:55,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:42:55,789 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-10-28 08:42:55,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 08:42:55,789 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:55,790 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:55,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 08:42:55,790 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting free_dataErr8ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:42:55,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:55,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1356621216, now seen corresponding path program 1 times [2021-10-28 08:42:55,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:55,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305721730] [2021-10-28 08:42:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:55,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:55,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:42:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:55,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:42:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:56,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:56,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305721730] [2021-10-28 08:42:56,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305721730] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:56,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:56,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-28 08:42:56,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385639803] [2021-10-28 08:42:56,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 08:42:56,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 08:42:56,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-28 08:42:56,113 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:42:56,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:56,591 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-10-28 08:42:56,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 08:42:56,591 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-10-28 08:42:56,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:56,592 INFO L225 Difference]: With dead ends: 40 [2021-10-28 08:42:56,592 INFO L226 Difference]: Without dead ends: 40 [2021-10-28 08:42:56,593 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-10-28 08:42:56,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-28 08:42:56,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-10-28 08:42:56,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:42:56,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-10-28 08:42:56,597 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 26 [2021-10-28 08:42:56,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:56,597 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-10-28 08:42:56,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:42:56,598 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-10-28 08:42:56,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 08:42:56,599 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:56,599 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:56,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 08:42:56,599 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:42:56,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:56,600 INFO L85 PathProgramCache]: Analyzing trace with hash 849725517, now seen corresponding path program 1 times [2021-10-28 08:42:56,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:56,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836352193] [2021-10-28 08:42:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:56,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:56,622 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:42:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:56,671 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:42:56,671 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:42:56,672 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:42:56,674 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr0REQUIRES_VIOLATION [2021-10-28 08:42:56,677 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr1REQUIRES_VIOLATION [2021-10-28 08:42:56,677 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr2REQUIRES_VIOLATION [2021-10-28 08:42:56,678 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr3REQUIRES_VIOLATION [2021-10-28 08:42:56,678 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr0REQUIRES_VIOLATION [2021-10-28 08:42:56,678 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr1REQUIRES_VIOLATION [2021-10-28 08:42:56,678 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr2REQUIRES_VIOLATION [2021-10-28 08:42:56,679 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr3REQUIRES_VIOLATION [2021-10-28 08:42:56,679 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:42:56,679 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:42:56,679 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:42:56,680 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:42:56,680 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:42:56,680 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:42:56,680 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr10REQUIRES_VIOLATION [2021-10-28 08:42:56,681 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr11REQUIRES_VIOLATION [2021-10-28 08:42:56,681 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr12REQUIRES_VIOLATION [2021-10-28 08:42:56,681 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr13REQUIRES_VIOLATION [2021-10-28 08:42:56,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 08:42:56,693 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:56,700 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:42:56,713 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 08:42:56,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:42:56 BoogieIcfgContainer [2021-10-28 08:42:56,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:42:56,728 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:42:56,728 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:42:56,728 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:42:56,729 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:42:50" (3/4) ... [2021-10-28 08:42:56,732 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:42:56,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:42:56,734 INFO L168 Benchmark]: Toolchain (without parser) took 7458.19 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 73.3 MB in the beginning and 103.0 MB in the end (delta: -29.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:42:56,734 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory is still 62.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:42:56,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.11 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 73.1 MB in the beginning and 99.0 MB in the end (delta: -25.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:42:56,735 INFO L168 Benchmark]: Boogie Preprocessor took 86.61 ms. Allocated memory is still 132.1 MB. Free memory was 99.0 MB in the beginning and 96.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:42:56,736 INFO L168 Benchmark]: RCFGBuilder took 814.12 ms. Allocated memory is still 132.1 MB. Free memory was 96.6 MB in the beginning and 76.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-28 08:42:56,736 INFO L168 Benchmark]: TraceAbstraction took 6037.26 ms. Allocated memory is still 132.1 MB. Free memory was 75.6 MB in the beginning and 103.0 MB in the end (delta: -27.4 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:42:56,737 INFO L168 Benchmark]: Witness Printer took 4.34 ms. Allocated memory is still 132.1 MB. Free memory is still 103.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:42:56,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory is still 62.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 507.11 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 73.1 MB in the beginning and 99.0 MB in the end (delta: -25.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.61 ms. Allocated memory is still 132.1 MB. Free memory was 99.0 MB in the beginning and 96.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 814.12 ms. Allocated memory is still 132.1 MB. Free memory was 96.6 MB in the beginning and 76.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6037.26 ms. Allocated memory is still 132.1 MB. Free memory was 75.6 MB in the beginning and 103.0 MB in the end (delta: -27.4 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.34 ms. Allocated memory is still 132.1 MB. Free memory is still 103.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; VAL [data={3:0}] [L545] CALL alloc_data(&data) VAL [pdata={3:0}] [L529] pdata->lo = malloc(16) VAL [malloc(16)={-1:0}, pdata={3:0}, pdata={3:0}] [L530] pdata->hi = malloc(24) VAL [malloc(24)={-2:0}, pdata={3:0}, pdata={3:0}] [L545] RET alloc_data(&data) VAL [data={3:0}] [L546] CALL free_data(&data) VAL [data={3:0}] [L534] EXPR data->lo VAL [data={3:0}, data={3:0}, data->lo={-1:0}] [L534] void *lo = data->lo; [L535] EXPR data->hi VAL [data={3:0}, data={3:0}, data->hi={-2:0}, lo={-1:0}] [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L540] data->lo = (void *) 0 VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L541] data->hi = (void *) 0 VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L546] RET free_data(&data) VAL [data={3:0}] [L547] return 0; [L547] return 0; VAL [\result=0] - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 73 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 231 SDtfs, 553 SDslu, 591 SDs, 0 SdLazy, 1758 SolverSat, 163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 51 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 1162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 08:42:56,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:42:59,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:42:59,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:42:59,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:42:59,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:42:59,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:42:59,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:42:59,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:42:59,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:42:59,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:42:59,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:42:59,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:42:59,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:42:59,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:42:59,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:42:59,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:42:59,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:42:59,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:42:59,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:42:59,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:42:59,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:42:59,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:42:59,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:42:59,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:42:59,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:42:59,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:42:59,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:42:59,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:42:59,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:42:59,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:42:59,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:42:59,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:42:59,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:42:59,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:42:59,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:42:59,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:42:59,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:42:59,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:42:59,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:42:59,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:42:59,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:42:59,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 08:42:59,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:42:59,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:42:59,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:42:59,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:42:59,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:42:59,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:42:59,630 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:42:59,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:42:59,631 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:42:59,631 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:42:59,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:42:59,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:42:59,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:42:59,633 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:42:59,633 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:42:59,634 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:42:59,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:42:59,634 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:42:59,634 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 08:42:59,635 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 08:42:59,635 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:42:59,635 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:42:59,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:42:59,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:42:59,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:42:59,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:42:59,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:42:59,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:42:59,637 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 08:42:59,637 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 08:42:59,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:42:59,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 08:42:59,638 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40afad058466dec508429aba14a695fa830becbd8e90e3307f02f796ff077dad [2021-10-28 08:43:00,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:43:00,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:43:00,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:43:00,094 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:43:00,095 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:43:00,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety/test-0019-2.i [2021-10-28 08:43:00,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/data/5ba8edbcb/414e7af6ba0c44efa57653c2349bfb31/FLAGcce8ccd47 [2021-10-28 08:43:00,930 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:43:00,930 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/sv-benchmarks/c/memsafety/test-0019-2.i [2021-10-28 08:43:00,951 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/data/5ba8edbcb/414e7af6ba0c44efa57653c2349bfb31/FLAGcce8ccd47 [2021-10-28 08:43:01,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/data/5ba8edbcb/414e7af6ba0c44efa57653c2349bfb31 [2021-10-28 08:43:01,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:43:01,181 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:43:01,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:43:01,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:43:01,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:43:01,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:43:01" (1/1) ... [2021-10-28 08:43:01,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b24dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:01, skipping insertion in model container [2021-10-28 08:43:01,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:43:01" (1/1) ... [2021-10-28 08:43:01,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:43:01,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:43:01,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:43:01,624 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:43:01,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:43:01,726 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:43:01,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:01 WrapperNode [2021-10-28 08:43:01,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:43:01,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:43:01,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:43:01,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:43:01,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:01" (1/1) ... [2021-10-28 08:43:01,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:01" (1/1) ... [2021-10-28 08:43:01,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:01" (1/1) ... [2021-10-28 08:43:01,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:01" (1/1) ... [2021-10-28 08:43:01,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:01" (1/1) ... [2021-10-28 08:43:01,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:01" (1/1) ... [2021-10-28 08:43:01,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:01" (1/1) ... [2021-10-28 08:43:01,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:43:01,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:43:01,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:43:01,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:43:01,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:01" (1/1) ... [2021-10-28 08:43:01,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:43:01,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:01,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:01,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:43:01,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:43:01,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:43:01,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 08:43:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 08:43:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:43:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:43:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 08:43:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 08:43:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 08:43:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2021-10-28 08:43:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2021-10-28 08:43:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:43:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:43:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 08:43:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 08:43:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 08:43:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 08:43:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:43:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:43:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:43:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:43:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:43:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:43:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:43:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:43:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:43:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:43:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:43:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:43:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:43:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:43:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:43:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:43:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:43:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:43:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:43:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 08:43:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 08:43:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 08:43:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:43:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:43:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:43:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:43:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:43:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:43:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:43:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:43:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:43:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:43:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:43:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:43:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:43:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:43:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:43:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:43:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:43:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:43:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:43:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:43:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:43:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:43:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:43:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:43:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:43:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:43:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:43:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:43:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:43:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:43:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:43:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:43:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:43:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:43:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:43:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:43:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:43:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:43:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:43:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:43:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:43:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 08:43:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:43:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 08:43:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:43:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:43:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 08:43:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:43:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:43:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:43:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:43:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:43:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:43:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:43:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:43:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:43:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:43:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:43:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:43:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:43:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:43:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:43:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:43:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:43:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:43:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:43:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:43:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:43:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:43:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:43:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:43:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:43:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:43:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:43:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:43:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:43:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:43:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:43:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:43:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:43:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:43:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:43:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:43:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:43:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:43:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2021-10-28 08:43:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:43:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:43:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2021-10-28 08:43:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:43:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:43:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:43:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:43:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 08:43:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:43:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 08:43:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 08:43:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 08:43:02,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:43:02,717 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-28 08:43:02,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:43:02 BoogieIcfgContainer [2021-10-28 08:43:02,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:43:02,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:43:02,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:43:02,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:43:02,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:43:01" (1/3) ... [2021-10-28 08:43:02,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7af92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:43:02, skipping insertion in model container [2021-10-28 08:43:02,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:01" (2/3) ... [2021-10-28 08:43:02,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7af92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:43:02, skipping insertion in model container [2021-10-28 08:43:02,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:43:02" (3/3) ... [2021-10-28 08:43:02,732 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2021-10-28 08:43:02,739 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:43:02,739 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-10-28 08:43:02,809 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:43:02,820 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:43:02,820 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-10-28 08:43:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 08:43:02,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 08:43:02,871 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:02,872 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:02,873 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:43:02,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:02,881 INFO L85 PathProgramCache]: Analyzing trace with hash 153654014, now seen corresponding path program 1 times [2021-10-28 08:43:02,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:43:02,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546546657] [2021-10-28 08:43:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:02,899 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:43:02,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:43:02,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:43:02,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 08:43:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:03,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:43:03,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:03,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:43:03,362 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 08:43:03,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-10-28 08:43:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:03,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:43:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:03,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:43:03,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546546657] [2021-10-28 08:43:03,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546546657] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:03,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:03,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-28 08:43:03,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036305461] [2021-10-28 08:43:03,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:43:03,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:43:03,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:43:03,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:43:03,597 INFO L87 Difference]: Start difference. First operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:43:03,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:03,877 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-10-28 08:43:03,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:43:03,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 08:43:03,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:03,890 INFO L225 Difference]: With dead ends: 53 [2021-10-28 08:43:03,890 INFO L226 Difference]: Without dead ends: 50 [2021-10-28 08:43:03,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:43:03,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-28 08:43:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-28 08:43:03,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 42 states have internal predecessors, (43), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:43:03,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-10-28 08:43:03,938 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2021-10-28 08:43:03,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:03,939 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-10-28 08:43:03,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:43:03,940 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-10-28 08:43:03,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 08:43:03,940 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:03,941 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:03,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:04,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:43:04,153 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:43:04,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:04,154 INFO L85 PathProgramCache]: Analyzing trace with hash 153654015, now seen corresponding path program 1 times [2021-10-28 08:43:04,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:43:04,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944396946] [2021-10-28 08:43:04,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:04,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:43:04,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:43:04,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:43:04,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 08:43:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:04,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 08:43:04,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:04,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:43:04,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:43:04,524 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 08:43:04,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-10-28 08:43:04,537 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 08:43:04,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-10-28 08:43:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:04,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:43:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:06,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:43:06,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944396946] [2021-10-28 08:43:06,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944396946] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:06,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:06,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 08:43:06,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434259693] [2021-10-28 08:43:06,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:43:06,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:43:06,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:43:06,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:43:06,189 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:43:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:07,101 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-10-28 08:43:07,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:43:07,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 08:43:07,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:07,113 INFO L225 Difference]: With dead ends: 49 [2021-10-28 08:43:07,114 INFO L226 Difference]: Without dead ends: 49 [2021-10-28 08:43:07,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:43:07,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-28 08:43:07,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-28 08:43:07,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 41 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:43:07,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-10-28 08:43:07,122 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2021-10-28 08:43:07,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:07,123 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-10-28 08:43:07,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:43:07,123 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-10-28 08:43:07,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:43:07,124 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:07,124 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:07,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-28 08:43:07,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:43:07,336 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_dataErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:43:07,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:07,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1632619936, now seen corresponding path program 1 times [2021-10-28 08:43:07,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:43:07,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770129564] [2021-10-28 08:43:07,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:07,338 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:43:07,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:43:07,339 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:43:07,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 08:43:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:07,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 08:43:07,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:07,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:43:07,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:43:07,672 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 08:43:07,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-10-28 08:43:07,683 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 08:43:07,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-10-28 08:43:07,905 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-28 08:43:07,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 43 [2021-10-28 08:43:07,920 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 08:43:07,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 33 [2021-10-28 08:43:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:08,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:43:10,416 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-28 08:43:10,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-28 08:43:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:11,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:43:11,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770129564] [2021-10-28 08:43:11,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770129564] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:11,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:11,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 10 [2021-10-28 08:43:11,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617274956] [2021-10-28 08:43:11,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 08:43:11,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:43:11,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 08:43:11,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2021-10-28 08:43:11,420 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:43:12,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:12,677 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-10-28 08:43:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:43:12,678 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 08:43:12,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:12,679 INFO L225 Difference]: With dead ends: 48 [2021-10-28 08:43:12,679 INFO L226 Difference]: Without dead ends: 48 [2021-10-28 08:43:12,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2021-10-28 08:43:12,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-28 08:43:12,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-28 08:43:12,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 40 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:43:12,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-10-28 08:43:12,687 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 11 [2021-10-28 08:43:12,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:12,688 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-10-28 08:43:12,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:43:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-10-28 08:43:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 08:43:12,689 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:12,689 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:12,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:12,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:43:12,890 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:43:12,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:12,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1202400066, now seen corresponding path program 1 times [2021-10-28 08:43:12,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:43:12,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123115488] [2021-10-28 08:43:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:12,892 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:43:12,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:43:12,895 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:43:12,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 08:43:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:13,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:43:13,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:13,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:43:13,376 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-28 08:43:13,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-10-28 08:43:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:13,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:43:13,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123115488] [2021-10-28 08:43:13,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123115488] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:13,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:13,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-28 08:43:13,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488683382] [2021-10-28 08:43:13,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:43:13,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:43:13,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:43:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:43:13,423 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:43:13,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:13,809 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-10-28 08:43:13,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:43:13,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-28 08:43:13,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:13,812 INFO L225 Difference]: With dead ends: 52 [2021-10-28 08:43:13,812 INFO L226 Difference]: Without dead ends: 52 [2021-10-28 08:43:13,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:43:13,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-28 08:43:13,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-10-28 08:43:13,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 38 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:43:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-10-28 08:43:13,820 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 17 [2021-10-28 08:43:13,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:13,821 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-10-28 08:43:13,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:43:13,821 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-10-28 08:43:13,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 08:43:13,822 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:13,822 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:13,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:14,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:43:14,025 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:43:14,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1202400067, now seen corresponding path program 1 times [2021-10-28 08:43:14,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:43:14,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968183518] [2021-10-28 08:43:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:14,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:43:14,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:43:14,032 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:43:14,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 08:43:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:14,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:43:14,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:14,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:43:14,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-28 08:43:15,170 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 08:43:15,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-10-28 08:43:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:15,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:43:15,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968183518] [2021-10-28 08:43:15,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968183518] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:15,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:15,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-28 08:43:15,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290587379] [2021-10-28 08:43:15,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 08:43:15,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:43:15,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:43:15,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:43:15,580 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 14 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:43:16,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:16,400 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-10-28 08:43:16,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:43:16,401 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 17 [2021-10-28 08:43:16,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:16,402 INFO L225 Difference]: With dead ends: 42 [2021-10-28 08:43:16,402 INFO L226 Difference]: Without dead ends: 42 [2021-10-28 08:43:16,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-28 08:43:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-28 08:43:16,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-28 08:43:16,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 34 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:43:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-28 08:43:16,408 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 17 [2021-10-28 08:43:16,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:16,409 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-28 08:43:16,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:43:16,409 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-28 08:43:16,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 08:43:16,410 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:16,410 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:16,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:16,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:43:16,611 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_dataErr4ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:43:16,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:16,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1648280676, now seen corresponding path program 1 times [2021-10-28 08:43:16,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:43:16,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022964969] [2021-10-28 08:43:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:16,613 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:43:16,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:43:16,613 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:43:16,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 08:43:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:16,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 08:43:16,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:16,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 08:43:17,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-28 08:43:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:17,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:43:17,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-10-28 08:43:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:17,455 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:43:17,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022964969] [2021-10-28 08:43:17,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022964969] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:17,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:17,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-10-28 08:43:17,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760085476] [2021-10-28 08:43:17,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 08:43:17,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:43:17,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 08:43:17,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-10-28 08:43:17,458 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:43:18,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:18,299 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-10-28 08:43:18,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:43:18,300 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-10-28 08:43:18,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:18,302 INFO L225 Difference]: With dead ends: 43 [2021-10-28 08:43:18,302 INFO L226 Difference]: Without dead ends: 43 [2021-10-28 08:43:18,303 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-28 08:43:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-28 08:43:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-10-28 08:43:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:43:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-10-28 08:43:18,308 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 22 [2021-10-28 08:43:18,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:18,309 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-10-28 08:43:18,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:43:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-10-28 08:43:18,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 08:43:18,310 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:18,310 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:18,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:18,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:43:18,521 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_dataErr5ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:43:18,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:18,522 INFO L85 PathProgramCache]: Analyzing trace with hash 442906694, now seen corresponding path program 1 times [2021-10-28 08:43:18,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:43:18,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038933030] [2021-10-28 08:43:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:18,522 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:43:18,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:43:18,523 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:43:18,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 08:43:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:18,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 08:43:18,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:18,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-28 08:43:19,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-28 08:43:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:19,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:43:20,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-10-28 08:43:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:20,650 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:43:20,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038933030] [2021-10-28 08:43:20,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038933030] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:20,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:20,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 20 [2021-10-28 08:43:20,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848100507] [2021-10-28 08:43:20,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 08:43:20,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:43:20,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 08:43:20,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-10-28 08:43:20,653 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 21 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 08:43:22,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:22,733 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-10-28 08:43:22,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 08:43:22,735 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2021-10-28 08:43:22,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:22,735 INFO L225 Difference]: With dead ends: 41 [2021-10-28 08:43:22,736 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 08:43:22,736 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-10-28 08:43:22,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 08:43:22,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-10-28 08:43:22,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:43:22,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-10-28 08:43:22,741 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 23 [2021-10-28 08:43:22,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:22,741 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-10-28 08:43:22,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 08:43:22,742 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-10-28 08:43:22,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 08:43:22,742 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:22,743 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:22,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:22,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:43:22,943 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_dataErr6ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:43:22,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash 845205726, now seen corresponding path program 1 times [2021-10-28 08:43:22,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:43:22,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006619998] [2021-10-28 08:43:22,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:22,944 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:43:22,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:43:22,946 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:43:22,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 08:43:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:23,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 08:43:23,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:23,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:43:23,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-28 08:43:23,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2021-10-28 08:43:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:23,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:43:24,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2021-10-28 08:43:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:24,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:43:24,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006619998] [2021-10-28 08:43:24,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006619998] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:24,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:24,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-10-28 08:43:24,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138187644] [2021-10-28 08:43:24,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:43:24,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:43:24,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:43:24,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:43:24,349 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:43:25,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:25,260 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-10-28 08:43:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 08:43:25,263 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-10-28 08:43:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:25,263 INFO L225 Difference]: With dead ends: 40 [2021-10-28 08:43:25,264 INFO L226 Difference]: Without dead ends: 40 [2021-10-28 08:43:25,264 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-10-28 08:43:25,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-28 08:43:25,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-10-28 08:43:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:43:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-10-28 08:43:25,269 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 24 [2021-10-28 08:43:25,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:25,270 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-10-28 08:43:25,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:43:25,270 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-10-28 08:43:25,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 08:43:25,272 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:25,272 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:25,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-28 08:43:25,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:43:25,477 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_dataErr9ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:43:25,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1869371830, now seen corresponding path program 1 times [2021-10-28 08:43:25,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:43:25,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490330436] [2021-10-28 08:43:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:25,478 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:43:25,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:43:25,480 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:43:25,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 08:43:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:25,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 08:43:25,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:25,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:43:25,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-28 08:43:25,944 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-28 08:43:25,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-10-28 08:43:26,026 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-28 08:43:26,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-10-28 08:43:26,323 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 08:43:26,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2021-10-28 08:43:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:26,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:43:27,043 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 08:43:27,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 447 treesize of output 407 [2021-10-28 08:43:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:27,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:43:27,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490330436] [2021-10-28 08:43:27,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490330436] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:27,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:27,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 18 [2021-10-28 08:43:27,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242883153] [2021-10-28 08:43:27,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 08:43:27,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:43:27,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 08:43:27,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-10-28 08:43:27,356 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:43:28,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:28,605 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2021-10-28 08:43:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 08:43:28,606 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-10-28 08:43:28,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:28,606 INFO L225 Difference]: With dead ends: 28 [2021-10-28 08:43:28,607 INFO L226 Difference]: Without dead ends: 28 [2021-10-28 08:43:28,607 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2021-10-28 08:43:28,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-28 08:43:28,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-28 08:43:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.0) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:43:28,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2021-10-28 08:43:28,614 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 27 [2021-10-28 08:43:28,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:28,615 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2021-10-28 08:43:28,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:43:28,615 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2021-10-28 08:43:28,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 08:43:28,616 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:28,616 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:28,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:28,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:43:28,829 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 08:43:28,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:28,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1914061661, now seen corresponding path program 1 times [2021-10-28 08:43:28,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:43:28,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723888809] [2021-10-28 08:43:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:28,830 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:43:28,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:43:28,831 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:43:28,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 08:43:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:29,075 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:43:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:29,192 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 08:43:29,192 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:43:29,193 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:43:29,195 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr0REQUIRES_VIOLATION [2021-10-28 08:43:29,196 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr1REQUIRES_VIOLATION [2021-10-28 08:43:29,196 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr2REQUIRES_VIOLATION [2021-10-28 08:43:29,196 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr3REQUIRES_VIOLATION [2021-10-28 08:43:29,196 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr0REQUIRES_VIOLATION [2021-10-28 08:43:29,196 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr1REQUIRES_VIOLATION [2021-10-28 08:43:29,197 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr2REQUIRES_VIOLATION [2021-10-28 08:43:29,197 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr3REQUIRES_VIOLATION [2021-10-28 08:43:29,197 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:43:29,197 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:43:29,197 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:43:29,198 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:43:29,198 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:43:29,198 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:43:29,198 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr10REQUIRES_VIOLATION [2021-10-28 08:43:29,199 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr11REQUIRES_VIOLATION [2021-10-28 08:43:29,199 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr12REQUIRES_VIOLATION [2021-10-28 08:43:29,199 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr13REQUIRES_VIOLATION [2021-10-28 08:43:29,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:29,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:43:29,403 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:29,406 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:43:29,417 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 08:43:29,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:43:29 BoogieIcfgContainer [2021-10-28 08:43:29,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:43:29,433 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:43:29,433 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:43:29,433 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:43:29,434 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:43:02" (3/4) ... [2021-10-28 08:43:29,441 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:43:29,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:43:29,442 INFO L168 Benchmark]: Toolchain (without parser) took 28260.83 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 49.4 MB in the beginning and 67.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:29,442 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory is still 66.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:43:29,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 533.33 ms. Allocated memory is still 86.0 MB. Free memory was 49.1 MB in the beginning and 62.9 MB in the end (delta: -13.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:29,443 INFO L168 Benchmark]: Boogie Preprocessor took 65.90 ms. Allocated memory is still 86.0 MB. Free memory was 62.9 MB in the beginning and 60.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:29,443 INFO L168 Benchmark]: RCFGBuilder took 926.90 ms. Allocated memory is still 86.0 MB. Free memory was 59.9 MB in the beginning and 64.2 MB in the end (delta: -4.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:29,444 INFO L168 Benchmark]: TraceAbstraction took 26710.00 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 63.4 MB in the beginning and 67.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:29,444 INFO L168 Benchmark]: Witness Printer took 7.86 ms. Allocated memory is still 111.1 MB. Free memory is still 67.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:43:29,446 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory is still 66.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 533.33 ms. Allocated memory is still 86.0 MB. Free memory was 49.1 MB in the beginning and 62.9 MB in the end (delta: -13.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.90 ms. Allocated memory is still 86.0 MB. Free memory was 62.9 MB in the beginning and 60.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 926.90 ms. Allocated memory is still 86.0 MB. Free memory was 59.9 MB in the beginning and 64.2 MB in the end (delta: -4.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26710.00 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 63.4 MB in the beginning and 67.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * Witness Printer took 7.86 ms. Allocated memory is still 111.1 MB. Free memory is still 67.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; VAL [data={31:0}] [L545] CALL alloc_data(&data) VAL [pdata={31:0}] [L529] pdata->lo = malloc(16) VAL [malloc(16)={1:0}, pdata={31:0}, pdata={31:0}] [L530] pdata->hi = malloc(24) VAL [malloc(24)={3:0}, pdata={31:0}, pdata={31:0}] [L545] RET alloc_data(&data) VAL [data={31:0}] [L546] CALL free_data(&data) VAL [data={31:0}] [L534] EXPR data->lo VAL [data={31:0}, data={31:0}, data->lo={1:0}] [L534] void *lo = data->lo; [L535] EXPR data->hi VAL [data={31:0}, data={31:0}, data->hi={3:0}, lo={1:0}] [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) VAL [data={31:0}, data={31:0}, hi={3:0}, lo={1:0}] [L540] data->lo = (void *) 0 VAL [data={31:0}, data={31:0}, hi={3:0}, lo={1:0}] [L541] data->hi = (void *) 0 VAL [data={31:0}, data={31:0}, hi={3:0}, lo={1:0}] [L546] RET free_data(&data) VAL [data={31:0}] [L547] return 0; [L547] return 0; VAL [\result=0] - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 79 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 26.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 262 SDtfs, 331 SDslu, 1029 SDs, 0 SdLazy, 1375 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 204 SyntacticMatches, 15 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 91, 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, 9 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 13.3s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 300 ConstructedInterpolants, 28 QuantifiedInterpolants, 2434 SizeOfPredicates, 82 NumberOfNonLiveVariables, 999 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 08:43:29,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_349f2282-eb4d-4a28-9fcd-fe40f61ccf60/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...