./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0158-3.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_44471e3d-1fda-4b15-9665-e44751770be5/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/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_44471e3d-1fda-4b15-9665-e44751770be5/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0158-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/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_44471e3d-1fda-4b15-9665-e44751770be5/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 56731b349541148adf5e7b09b4f62a37ef34decefedcd97d69429e6620dcb1d4 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:14:40,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:14:40,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:14:40,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:14:40,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:14:40,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:14:40,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:14:40,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:14:40,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:14:40,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:14:40,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:14:40,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:14:40,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:14:40,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:14:40,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:14:40,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:14:40,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:14:40,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:14:40,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:14:40,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:14:40,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:14:40,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:14:40,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:14:40,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:14:40,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:14:40,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:14:40,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:14:40,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:14:40,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:14:40,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:14:40,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:14:40,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:14:40,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:14:40,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:14:40,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:14:40,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:14:40,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:14:40,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:14:40,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:14:40,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:14:40,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:14:40,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:14:40,871 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:14:40,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:14:40,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:14:40,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:14:40,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:14:40,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:14:40,875 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:14:40,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:14:40,875 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:14:40,876 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:14:40,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:14:40,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:14:40,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:14:40,878 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:14:40,878 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:14:40,878 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:14:40,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:14:40,879 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:14:40,879 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:14:40,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:14:40,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:14:40,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:14:40,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:14:40,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:14:40,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:14:40,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:14:40,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:14:40,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:14:40,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:14:40,883 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_44471e3d-1fda-4b15-9665-e44751770be5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56731b349541148adf5e7b09b4f62a37ef34decefedcd97d69429e6620dcb1d4 [2021-10-28 09:14:41,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:14:41,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:14:41,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:14:41,251 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:14:41,253 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:14:41,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety/test-0158-3.i [2021-10-28 09:14:41,355 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/bin/uautomizer-UnR33cPsHg/data/82e326dbd/155a0d9eb6204fedb7a495d0a5734165/FLAG5b4184abd [2021-10-28 09:14:41,895 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:14:41,896 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/sv-benchmarks/c/memsafety/test-0158-3.i [2021-10-28 09:14:41,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/bin/uautomizer-UnR33cPsHg/data/82e326dbd/155a0d9eb6204fedb7a495d0a5734165/FLAG5b4184abd [2021-10-28 09:14:42,193 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/bin/uautomizer-UnR33cPsHg/data/82e326dbd/155a0d9eb6204fedb7a495d0a5734165 [2021-10-28 09:14:42,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:14:42,208 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:14:42,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:14:42,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:14:42,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:14:42,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:14:42" (1/1) ... [2021-10-28 09:14:42,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5761db8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:42, skipping insertion in model container [2021-10-28 09:14:42,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:14:42" (1/1) ... [2021-10-28 09:14:42,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:14:42,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:14:42,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:14:42,691 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:14:42,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:14:42,822 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:14:42,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:42 WrapperNode [2021-10-28 09:14:42,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:14:42,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:14:42,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:14:42,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:14:42,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:42" (1/1) ... [2021-10-28 09:14:42,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:42" (1/1) ... [2021-10-28 09:14:42,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:42" (1/1) ... [2021-10-28 09:14:42,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:42" (1/1) ... [2021-10-28 09:14:42,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:42" (1/1) ... [2021-10-28 09:14:42,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:42" (1/1) ... [2021-10-28 09:14:42,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:42" (1/1) ... [2021-10-28 09:14:42,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:14:42,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:14:42,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:14:42,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:14:42,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:42" (1/1) ... [2021-10-28 09:14:42,966 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:14:42,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:14:42,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:14:42,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:14:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:14:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:14:43,072 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:14:43,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:14:43,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:14:43,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 09:14:43,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 09:14:43,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 09:14:43,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:14:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:14:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:14:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:14:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:14:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:14:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:14:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:14:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:14:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:14:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:14:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:14:43,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:14:43,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:14:43,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:14:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:14:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:14:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:14:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:14:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:14:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:14:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:14:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:14:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:14:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:14:43,085 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 09:14:43,085 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 09:14:43,085 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 09:14:43,085 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:14:43,086 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:14:43,086 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:14:43,086 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:14:43,086 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:14:43,086 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:14:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:14:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:14:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:14:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:14:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:14:43,088 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:14:43,088 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:14:43,088 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:14:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:14:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:14:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:14:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:14:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:14:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:14:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:14:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:14:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:14:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:14:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:14:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:14:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:14:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:14:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:14:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:14:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:14:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:14:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:14:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:14:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:14:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:14:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:14:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:14:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:14:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:14:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:14:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:14:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:14:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:14:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:14:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:14:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:14:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:14:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:14:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:14:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:14:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:14:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:14:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:14:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:14:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:14:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:14:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:14:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:14:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:14:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:14:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:14:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:14:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:14:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:14:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:14:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:14:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:14:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:14:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:14:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:14:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:14:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:14:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:14:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:14:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:14:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:14:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:14:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:14:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:14:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:14:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:14:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:14:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:14:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:14:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 09:14:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 09:14:43,110 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 09:14:43,110 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 09:14:43,110 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 09:14:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 09:14:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 09:14:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 09:14:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 09:14:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 09:14:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 09:14:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 09:14:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 09:14:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 09:14:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 09:14:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 09:14:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 09:14:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 09:14:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 09:14:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 09:14:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 09:14:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 09:14:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 09:14:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 09:14:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 09:14:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 09:14:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 09:14:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 09:14:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 09:14:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 09:14:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 09:14:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 09:14:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 09:14:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 09:14:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 09:14:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 09:14:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 09:14:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 09:14:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-10-28 09:14:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-10-28 09:14:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 09:14:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 09:14:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-10-28 09:14:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-10-28 09:14:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-10-28 09:14:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 09:14:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 09:14:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 09:14:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 09:14:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 09:14:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 09:14:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:14:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:14:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:14:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:14:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:14:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:14:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:14:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:14:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:14:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:14:43,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:14:43,782 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-28 09:14:43,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:14:43 BoogieIcfgContainer [2021-10-28 09:14:43,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:14:43,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:14:43,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:14:43,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:14:43,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:14:42" (1/3) ... [2021-10-28 09:14:43,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5429c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:14:43, skipping insertion in model container [2021-10-28 09:14:43,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:42" (2/3) ... [2021-10-28 09:14:43,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5429c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:14:43, skipping insertion in model container [2021-10-28 09:14:43,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:14:43" (3/3) ... [2021-10-28 09:14:43,795 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-3.i [2021-10-28 09:14:43,802 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:14:43,802 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-10-28 09:14:43,854 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:14:43,861 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 09:14:43,862 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-28 09:14:43,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 35 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:14:43,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:14:43,887 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:43,888 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:43,888 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-28 09:14:43,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:43,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1484797383, now seen corresponding path program 1 times [2021-10-28 09:14:43,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:43,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193350142] [2021-10-28 09:14:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:43,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:44,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:14:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:44,168 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 09:14:44,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:44,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193350142] [2021-10-28 09:14:44,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193350142] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:14:44,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:14:44,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:14:44,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546398220] [2021-10-28 09:14:44,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:14:44,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:44,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:14:44,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:14:44,197 INFO L87 Difference]: Start difference. First operand has 40 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 35 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:44,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:44,297 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2021-10-28 09:14:44,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:14:44,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:14:44,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:44,308 INFO L225 Difference]: With dead ends: 35 [2021-10-28 09:14:44,308 INFO L226 Difference]: Without dead ends: 32 [2021-10-28 09:14:44,310 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:14:44,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-28 09:14:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-28 09:14:44,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 28 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2021-10-28 09:14:44,365 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 7 [2021-10-28 09:14:44,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:44,366 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2021-10-28 09:14:44,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:44,366 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2021-10-28 09:14:44,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:14:44,367 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:44,367 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:44,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:14:44,368 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-28 09:14:44,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:44,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1484797382, now seen corresponding path program 1 times [2021-10-28 09:14:44,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:44,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286575322] [2021-10-28 09:14:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:44,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:44,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:14:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:44,532 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 09:14:44,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:44,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286575322] [2021-10-28 09:14:44,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286575322] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:14:44,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:14:44,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:14:44,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105107951] [2021-10-28 09:14:44,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:14:44,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:44,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:14:44,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:14:44,543 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:44,624 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2021-10-28 09:14:44,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:14:44,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:14:44,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:44,627 INFO L225 Difference]: With dead ends: 27 [2021-10-28 09:14:44,627 INFO L226 Difference]: Without dead ends: 27 [2021-10-28 09:14:44,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:14:44,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-28 09:14:44,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-28 09:14:44,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2021-10-28 09:14:44,637 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 7 [2021-10-28 09:14:44,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:44,637 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2021-10-28 09:14:44,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:44,638 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2021-10-28 09:14:44,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 09:14:44,639 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:44,639 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:44,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:14:44,640 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr10ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-28 09:14:44,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:44,642 INFO L85 PathProgramCache]: Analyzing trace with hash 852652130, now seen corresponding path program 1 times [2021-10-28 09:14:44,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:44,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282136594] [2021-10-28 09:14:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:44,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:44,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:14:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:44,882 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 09:14:44,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:44,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282136594] [2021-10-28 09:14:44,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282136594] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:14:44,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:14:44,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:14:44,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304743226] [2021-10-28 09:14:44,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:14:44,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:44,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:14:44,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:14:44,885 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:44,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:44,978 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-10-28 09:14:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:14:44,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-28 09:14:44,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:44,980 INFO L225 Difference]: With dead ends: 26 [2021-10-28 09:14:44,980 INFO L226 Difference]: Without dead ends: 26 [2021-10-28 09:14:44,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 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 09:14:44,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-28 09:14:44,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-28 09:14:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 22 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2021-10-28 09:14:44,990 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 14 [2021-10-28 09:14:44,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:44,991 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2021-10-28 09:14:44,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:44,992 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2021-10-28 09:14:44,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:14:44,995 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:44,995 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:44,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:14:44,995 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr11ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-28 09:14:44,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:44,997 INFO L85 PathProgramCache]: Analyzing trace with hash 662412320, now seen corresponding path program 1 times [2021-10-28 09:14:44,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:44,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143974292] [2021-10-28 09:14:44,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:44,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:45,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:14:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:45,183 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 09:14:45,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:45,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143974292] [2021-10-28 09:14:45,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143974292] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:14:45,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:14:45,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:14:45,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516069855] [2021-10-28 09:14:45,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:14:45,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:45,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:14:45,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:14:45,194 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:45,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:45,288 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-10-28 09:14:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:14:45,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-10-28 09:14:45,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:45,291 INFO L225 Difference]: With dead ends: 25 [2021-10-28 09:14:45,291 INFO L226 Difference]: Without dead ends: 25 [2021-10-28 09:14:45,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 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 09:14:45,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-28 09:14:45,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-28 09:14:45,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2021-10-28 09:14:45,300 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 15 [2021-10-28 09:14:45,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:45,300 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2021-10-28 09:14:45,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:45,301 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2021-10-28 09:14:45,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:14:45,302 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:45,302 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:45,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:14:45,304 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr12ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-28 09:14:45,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:45,305 INFO L85 PathProgramCache]: Analyzing trace with hash -940054492, now seen corresponding path program 1 times [2021-10-28 09:14:45,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:45,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353034263] [2021-10-28 09:14:45,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:45,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:14:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:45,484 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 09:14:45,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:45,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353034263] [2021-10-28 09:14:45,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353034263] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:14:45,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:14:45,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:14:45,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356136473] [2021-10-28 09:14:45,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:14:45,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:14:45,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:14:45,492 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:45,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:45,600 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2021-10-28 09:14:45,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:14:45,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-28 09:14:45,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:45,602 INFO L225 Difference]: With dead ends: 24 [2021-10-28 09:14:45,602 INFO L226 Difference]: Without dead ends: 24 [2021-10-28 09:14:45,603 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 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 09:14:45,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-28 09:14:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-28 09:14:45,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:45,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2021-10-28 09:14:45,617 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 16 [2021-10-28 09:14:45,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:45,617 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2021-10-28 09:14:45,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:45,618 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2021-10-28 09:14:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:14:45,619 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:45,619 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 09:14:45,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:14:45,619 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-28 09:14:45,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:45,620 INFO L85 PathProgramCache]: Analyzing trace with hash 923081890, now seen corresponding path program 1 times [2021-10-28 09:14:45,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:45,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748580041] [2021-10-28 09:14:45,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:45,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:45,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:14:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:45,765 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 09:14:45,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:45,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748580041] [2021-10-28 09:14:45,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748580041] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:14:45,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:14:45,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:14:45,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695620668] [2021-10-28 09:14:45,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:14:45,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:45,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:14:45,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:14:45,768 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:45,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:45,866 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-28 09:14:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:14:45,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 09:14:45,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:45,873 INFO L225 Difference]: With dead ends: 23 [2021-10-28 09:14:45,873 INFO L226 Difference]: Without dead ends: 23 [2021-10-28 09:14:45,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:14:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-28 09:14:45,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-28 09:14:45,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:45,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-10-28 09:14:45,882 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 17 [2021-10-28 09:14:45,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:45,883 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-10-28 09:14:45,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:45,883 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-10-28 09:14:45,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:14:45,884 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:45,885 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:45,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:14:45,885 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-28 09:14:45,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:45,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1449232410, now seen corresponding path program 1 times [2021-10-28 09:14:45,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:45,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765493689] [2021-10-28 09:14:45,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:45,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:46,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:14:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:46,032 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 09:14:46,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:46,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765493689] [2021-10-28 09:14:46,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765493689] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:14:46,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:14:46,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:14:46,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649541568] [2021-10-28 09:14:46,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:14:46,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:46,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:14:46,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:14:46,036 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:46,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:46,145 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-28 09:14:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:14:46,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 09:14:46,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:46,147 INFO L225 Difference]: With dead ends: 22 [2021-10-28 09:14:46,147 INFO L226 Difference]: Without dead ends: 22 [2021-10-28 09:14:46,148 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:14:46,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-28 09:14:46,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-28 09:14:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-10-28 09:14:46,152 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 18 [2021-10-28 09:14:46,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:46,153 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-10-28 09:14:46,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:14:46,153 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-10-28 09:14:46,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:14:46,154 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:46,154 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:46,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:14:46,154 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr15ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-28 09:14:46,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:46,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1976531676, now seen corresponding path program 1 times [2021-10-28 09:14:46,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:46,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591600412] [2021-10-28 09:14:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:46,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:14:46,202 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:14:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:14:46,287 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:14:46,287 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:14:46,290 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr15ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:14:46,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:14:46,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:14:46,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:14:46,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:14:46,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:14:46,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:14:46,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 09:14:46,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 09:14:46,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 09:14:46,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 09:14:46,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:14:46,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:14:46,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:14:46,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:14:46,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:14:46,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:14:46,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:14:46,301 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:46,306 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:14:46,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:14:46 BoogieIcfgContainer [2021-10-28 09:14:46,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:14:46,353 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:14:46,353 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:14:46,353 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:14:46,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:14:43" (3/4) ... [2021-10-28 09:14:46,356 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:14:46,400 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:14:46,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:14:46,402 INFO L168 Benchmark]: Toolchain (without parser) took 4193.00 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 56.9 MB in the beginning and 47.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:14:46,402 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 76.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:14:46,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.00 ms. Allocated memory is still 100.7 MB. Free memory was 56.6 MB in the beginning and 38.4 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:14:46,404 INFO L168 Benchmark]: Boogie Preprocessor took 122.04 ms. Allocated memory is still 100.7 MB. Free memory was 38.4 MB in the beginning and 77.7 MB in the end (delta: -39.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:14:46,404 INFO L168 Benchmark]: RCFGBuilder took 837.26 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 57.3 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:14:46,405 INFO L168 Benchmark]: TraceAbstraction took 2565.09 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 57.0 MB in the beginning and 49.7 MB in the end (delta: 7.4 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:14:46,405 INFO L168 Benchmark]: Witness Printer took 47.68 ms. Allocated memory is still 123.7 MB. Free memory was 49.7 MB in the beginning and 47.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:14:46,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 76.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 612.00 ms. Allocated memory is still 100.7 MB. Free memory was 56.6 MB in the beginning and 38.4 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 122.04 ms. Allocated memory is still 100.7 MB. Free memory was 38.4 MB in the beginning and 77.7 MB in the end (delta: -39.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 837.26 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 57.3 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2565.09 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 57.0 MB in the beginning and 49.7 MB in the end (delta: 7.4 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. * Witness Printer took 47.68 ms. Allocated memory is still 123.7 MB. Free memory was 49.7 MB in the beginning and 47.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 - CounterExampleResult [Line: 655]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L642-L649] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L650] data.p0 = malloc(37U) VAL [data={3:0}, malloc(37U)={-1:0}] [L651] data.str.p2 = &data VAL [data={3:0}] [L652] EXPR data.p0 VAL [data={3:0}, data.p0={-1:0}] [L652] void *ptr = data.p0; [L653] data.str.c[1] = sizeof data.str.p1 VAL [data={3:0}, ptr={-1:0}] [L654] EXPR data.p0 VAL [data={3:0}, data.p0={-1:0}, ptr={-1:0}] [L654] free(data.p0) VAL [data={3:0}, data.p0={-1:0}, ptr={-1:0}] [L654] free(data.p0) VAL [data={3:0}, data.p0={-1:0}, ptr={-1:0}] [L654] free(data.p0) [L655] free(ptr) VAL [data={3:0}, ptr={-1:0}] [L655] free(ptr) VAL [data={3:0}, ptr={-1:0}] [L655] free(ptr) VAL [data={3:0}, ptr={-1:0}] - UnprovableResult [Line: 650]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 650]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 651]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 651]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 652]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 652]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 653]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 653]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 655]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 655]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 640]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 58 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 94 SDslu, 176 SDs, 0 SdLazy, 355 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 47, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 645 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 proved your program to be incorrect! [2021-10-28 09:14:46,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44471e3d-1fda-4b15-9665-e44751770be5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...