./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cbzero-alloca-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cbzero-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 717baf941b5233bcdd3406dedb0f8a4ec61d7d81c585f16d362540f6a1da773f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:50:49,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:50:49,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:50:50,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:50:50,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:50:50,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:50:50,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:50:50,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:50:50,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:50:50,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:50:50,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:50:50,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:50:50,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:50:50,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:50:50,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:50:50,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:50:50,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:50:50,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:50:50,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:50:50,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:50:50,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:50:50,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:50:50,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:50:50,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:50:50,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:50:50,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:50:50,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:50:50,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:50:50,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:50:50,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:50:50,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:50:50,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:50:50,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:50:50,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:50:50,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:50:50,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:50:50,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:50:50,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:50:50,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:50:50,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:50:50,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:50:50,099 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-18 19:50:50,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:50:50,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:50:50,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:50:50,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:50:50,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:50:50,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:50:50,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:50:50,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:50:50,143 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:50:50,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:50:50,144 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:50:50,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:50:50,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:50:50,145 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:50:50,145 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:50:50,145 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:50:50,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:50:50,146 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:50:50,146 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:50:50,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:50:50,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:50:50,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:50:50,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:50:50,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:50:50,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:50:50,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:50:50,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:50:50,148 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_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 717baf941b5233bcdd3406dedb0f8a4ec61d7d81c585f16d362540f6a1da773f [2022-11-18 19:50:50,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:50:50,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:50:50,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:50:50,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:50:50,442 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:50:50,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cbzero-alloca-1.i [2022-11-18 19:50:50,503 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/data/6dbb29b56/2ae99524855a40f5a0910ec2a2aa1cb7/FLAG97423077a [2022-11-18 19:50:50,953 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:50:50,954 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/sv-benchmarks/c/termination-memory-alloca/openbsd_cbzero-alloca-1.i [2022-11-18 19:50:50,992 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/data/6dbb29b56/2ae99524855a40f5a0910ec2a2aa1cb7/FLAG97423077a [2022-11-18 19:50:51,289 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/data/6dbb29b56/2ae99524855a40f5a0910ec2a2aa1cb7 [2022-11-18 19:50:51,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:50:51,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:50:51,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:50:51,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:50:51,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:50:51,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:50:51" (1/1) ... [2022-11-18 19:50:51,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17fcc8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:51, skipping insertion in model container [2022-11-18 19:50:51,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:50:51" (1/1) ... [2022-11-18 19:50:51,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:50:51,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:50:51,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:50:51,655 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:50:51,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:50:51,716 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:50:51,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:51 WrapperNode [2022-11-18 19:50:51,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:50:51,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:50:51,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:50:51,718 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:50:51,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:51" (1/1) ... [2022-11-18 19:50:51,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:51" (1/1) ... [2022-11-18 19:50:51,764 INFO L138 Inliner]: procedures = 111, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2022-11-18 19:50:51,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:50:51,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:50:51,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:50:51,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:50:51,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:51" (1/1) ... [2022-11-18 19:50:51,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:51" (1/1) ... [2022-11-18 19:50:51,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:51" (1/1) ... [2022-11-18 19:50:51,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:51" (1/1) ... [2022-11-18 19:50:51,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:51" (1/1) ... [2022-11-18 19:50:51,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:51" (1/1) ... [2022-11-18 19:50:51,793 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:51" (1/1) ... [2022-11-18 19:50:51,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:51" (1/1) ... [2022-11-18 19:50:51,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:50:51,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:50:51,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:50:51,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:50:51,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:51" (1/1) ... [2022-11-18 19:50:51,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:50:51,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:51,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:50:51,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:50:51,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:50:51,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:50:51,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:50:51,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:50:51,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:50:51,966 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:50:51,968 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:50:52,071 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:50:52,077 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:50:52,077 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:50:52,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:50:52 BoogieIcfgContainer [2022-11-18 19:50:52,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:50:52,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:50:52,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:50:52,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:50:52,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:50:51" (1/3) ... [2022-11-18 19:50:52,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db8ed97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:50:52, skipping insertion in model container [2022-11-18 19:50:52,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:51" (2/3) ... [2022-11-18 19:50:52,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db8ed97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:50:52, skipping insertion in model container [2022-11-18 19:50:52,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:50:52" (3/3) ... [2022-11-18 19:50:52,088 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-1.i [2022-11-18 19:50:52,105 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:50:52,106 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-18 19:50:52,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:50:52,184 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@358e9672, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:50:52,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 19:50:52,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:52,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:50:52,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:52,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 19:50:52,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-18 19:50:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:52,203 INFO L85 PathProgramCache]: Analyzing trace with hash 889510815, now seen corresponding path program 1 times [2022-11-18 19:50:52,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:52,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243225732] [2022-11-18 19:50:52,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:52,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:52,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:52,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:52,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243225732] [2022-11-18 19:50:52,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243225732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:52,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:52,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:50:52,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557372848] [2022-11-18 19:50:52,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:52,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:50:52,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:52,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:50:52,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:52,464 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:52,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:52,506 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-11-18 19:50:52,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:50:52,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:50:52,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:52,516 INFO L225 Difference]: With dead ends: 21 [2022-11-18 19:50:52,517 INFO L226 Difference]: Without dead ends: 17 [2022-11-18 19:50:52,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:50:52,521 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:52,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 25 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:50:52,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-18 19:50:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-18 19:50:52,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:52,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-11-18 19:50:52,552 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 6 [2022-11-18 19:50:52,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:52,553 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-11-18 19:50:52,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:52,553 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-11-18 19:50:52,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:50:52,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:52,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 19:50:52,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:50:52,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-18 19:50:52,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash 889512737, now seen corresponding path program 1 times [2022-11-18 19:50:52,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:52,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760067760] [2022-11-18 19:50:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:52,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:52,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:52,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760067760] [2022-11-18 19:50:52,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760067760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:52,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:52,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:50:52,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668642437] [2022-11-18 19:50:52,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:52,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:50:52,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:50:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:50:52,593 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:52,607 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-11-18 19:50:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:50:52,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:50:52,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:52,609 INFO L225 Difference]: With dead ends: 16 [2022-11-18 19:50:52,609 INFO L226 Difference]: Without dead ends: 15 [2022-11-18 19:50:52,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:50:52,611 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:52,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:50:52,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-18 19:50:52,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-11-18 19:50:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:52,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-18 19:50:52,615 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2022-11-18 19:50:52,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:52,615 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-18 19:50:52,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:52,616 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-18 19:50:52,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:50:52,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:52,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:52,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:50:52,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-18 19:50:52,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:52,638 INFO L85 PathProgramCache]: Analyzing trace with hash 121446415, now seen corresponding path program 1 times [2022-11-18 19:50:52,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:52,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041094246] [2022-11-18 19:50:52,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:52,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:52,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:52,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041094246] [2022-11-18 19:50:52,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041094246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:52,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:52,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:50:52,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20416359] [2022-11-18 19:50:52,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:52,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:50:52,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:52,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:50:52,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:52,851 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:52,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:52,901 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-11-18 19:50:52,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:50:52,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:50:52,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:52,902 INFO L225 Difference]: With dead ends: 13 [2022-11-18 19:50:52,903 INFO L226 Difference]: Without dead ends: 13 [2022-11-18 19:50:52,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:50:52,905 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:52,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:50:52,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-18 19:50:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-18 19:50:52,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-18 19:50:52,915 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2022-11-18 19:50:52,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:52,915 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-18 19:50:52,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-18 19:50:52,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:50:52,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:52,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:52,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:50:52,918 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-18 19:50:52,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:52,921 INFO L85 PathProgramCache]: Analyzing trace with hash 121446416, now seen corresponding path program 1 times [2022-11-18 19:50:52,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:52,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036849732] [2022-11-18 19:50:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:52,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:53,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:53,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036849732] [2022-11-18 19:50:53,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036849732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:53,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:53,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:50:53,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656427438] [2022-11-18 19:50:53,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:53,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:50:53,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:53,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:50:53,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:50:53,267 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:53,358 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-11-18 19:50:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:50:53,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:50:53,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:53,360 INFO L225 Difference]: With dead ends: 30 [2022-11-18 19:50:53,360 INFO L226 Difference]: Without dead ends: 30 [2022-11-18 19:50:53,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:50:53,366 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:53,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 49 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:50:53,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-18 19:50:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 18. [2022-11-18 19:50:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-18 19:50:53,371 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 8 [2022-11-18 19:50:53,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:53,371 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-18 19:50:53,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-18 19:50:53,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:50:53,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:53,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:53,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:50:53,372 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-18 19:50:53,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:53,373 INFO L85 PathProgramCache]: Analyzing trace with hash 178704718, now seen corresponding path program 1 times [2022-11-18 19:50:53,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:53,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767660640] [2022-11-18 19:50:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:53,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:53,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767660640] [2022-11-18 19:50:53,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767660640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:53,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:53,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:50:53,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783140971] [2022-11-18 19:50:53,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:53,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:50:53,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:53,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:50:53,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:50:53,644 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:53,695 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-11-18 19:50:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:50:53,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:50:53,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:53,701 INFO L225 Difference]: With dead ends: 25 [2022-11-18 19:50:53,702 INFO L226 Difference]: Without dead ends: 25 [2022-11-18 19:50:53,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:50:53,708 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 40 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:53,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 28 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:50:53,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-18 19:50:53,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2022-11-18 19:50:53,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-18 19:50:53,713 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2022-11-18 19:50:53,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:53,713 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-18 19:50:53,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,714 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-11-18 19:50:53,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:50:53,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:53,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:53,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:50:53,715 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-18 19:50:53,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:53,715 INFO L85 PathProgramCache]: Analyzing trace with hash -530130097, now seen corresponding path program 1 times [2022-11-18 19:50:53,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:53,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656777180] [2022-11-18 19:50:53,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:53,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:53,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:53,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656777180] [2022-11-18 19:50:53,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656777180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:53,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:53,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:50:53,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689424918] [2022-11-18 19:50:53,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:53,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:50:53,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:50:53,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:50:53,791 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:53,831 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-11-18 19:50:53,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:50:53,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 19:50:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:53,832 INFO L225 Difference]: With dead ends: 28 [2022-11-18 19:50:53,832 INFO L226 Difference]: Without dead ends: 28 [2022-11-18 19:50:53,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:50:53,833 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:53,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 54 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:50:53,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-18 19:50:53,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2022-11-18 19:50:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-11-18 19:50:53,837 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 9 [2022-11-18 19:50:53,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:53,837 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-11-18 19:50:53,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,838 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-11-18 19:50:53,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:50:53,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:53,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:53,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:50:53,839 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-18 19:50:53,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:53,839 INFO L85 PathProgramCache]: Analyzing trace with hash -472871795, now seen corresponding path program 1 times [2022-11-18 19:50:53,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:53,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80645702] [2022-11-18 19:50:53,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:53,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:53,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:53,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80645702] [2022-11-18 19:50:53,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80645702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:53,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:53,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:50:53,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995202784] [2022-11-18 19:50:53,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:53,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:50:53,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:53,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:50:53,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:50:53,932 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:53,972 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-11-18 19:50:53,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:50:53,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 19:50:53,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:53,973 INFO L225 Difference]: With dead ends: 19 [2022-11-18 19:50:53,974 INFO L226 Difference]: Without dead ends: 19 [2022-11-18 19:50:53,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:50:53,976 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:53,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 32 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:50:53,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-18 19:50:53,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2022-11-18 19:50:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-11-18 19:50:53,986 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2022-11-18 19:50:53,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:53,987 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-11-18 19:50:53,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,988 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-11-18 19:50:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 19:50:53,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:53,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:53,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:50:53,990 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-18 19:50:53,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:53,990 INFO L85 PathProgramCache]: Analyzing trace with hash -461287736, now seen corresponding path program 1 times [2022-11-18 19:50:53,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:53,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048021600] [2022-11-18 19:50:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:53,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:54,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:54,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048021600] [2022-11-18 19:50:54,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048021600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:54,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765321890] [2022-11-18 19:50:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:54,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:54,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:54,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:54,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:50:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:54,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:50:54,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:54,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:54,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765321890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:54,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:54,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-18 19:50:54,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810236804] [2022-11-18 19:50:54,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:54,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:50:54,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:54,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:50:54,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:50:54,550 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:54,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:54,625 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-11-18 19:50:54,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:50:54,626 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 19:50:54,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:54,628 INFO L225 Difference]: With dead ends: 26 [2022-11-18 19:50:54,628 INFO L226 Difference]: Without dead ends: 26 [2022-11-18 19:50:54,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:50:54,633 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:54,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 81 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:50:54,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-18 19:50:54,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-11-18 19:50:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:54,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-11-18 19:50:54,645 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2022-11-18 19:50:54,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:54,646 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-11-18 19:50:54,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:54,646 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-11-18 19:50:54,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 19:50:54,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:54,647 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:54,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:54,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 19:50:54,848 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-18 19:50:54,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash 218770634, now seen corresponding path program 1 times [2022-11-18 19:50:54,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:54,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842715659] [2022-11-18 19:50:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:54,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:54,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:54,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842715659] [2022-11-18 19:50:54,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842715659] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:54,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594209101] [2022-11-18 19:50:54,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:54,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:54,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:54,996 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:55,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:50:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:55,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:50:55,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:55,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:55,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594209101] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:55,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:55,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-11-18 19:50:55,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356536061] [2022-11-18 19:50:55,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:55,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:50:55,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:55,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:50:55,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:50:55,348 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:55,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:55,516 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2022-11-18 19:50:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:50:55,517 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 19:50:55,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:55,518 INFO L225 Difference]: With dead ends: 44 [2022-11-18 19:50:55,519 INFO L226 Difference]: Without dead ends: 44 [2022-11-18 19:50:55,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:50:55,521 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:55,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 118 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:50:55,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-18 19:50:55,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 24. [2022-11-18 19:50:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-18 19:50:55,527 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 12 [2022-11-18 19:50:55,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:55,528 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-18 19:50:55,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:55,528 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-18 19:50:55,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 19:50:55,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:55,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:55,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:55,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:55,730 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-18 19:50:55,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:55,730 INFO L85 PathProgramCache]: Analyzing trace with hash -174256376, now seen corresponding path program 1 times [2022-11-18 19:50:55,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:55,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803238708] [2022-11-18 19:50:55,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:55,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:56,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:56,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803238708] [2022-11-18 19:50:56,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803238708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:56,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374565506] [2022-11-18 19:50:56,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:56,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:56,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:56,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:56,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:50:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:56,278 WARN L261 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 19:50:56,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:56,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 19:50:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:56,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:57,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:57,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374565506] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:57,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:57,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-11-18 19:50:57,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630597940] [2022-11-18 19:50:57,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:57,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:50:57,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:57,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:50:57,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:50:57,389 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:58,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:58,025 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-18 19:50:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:50:58,025 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 19:50:58,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:58,025 INFO L225 Difference]: With dead ends: 29 [2022-11-18 19:50:58,025 INFO L226 Difference]: Without dead ends: 29 [2022-11-18 19:50:58,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:50:58,027 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 42 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:58,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 77 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:50:58,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-18 19:50:58,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-11-18 19:50:58,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:58,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-18 19:50:58,030 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12 [2022-11-18 19:50:58,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:58,030 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-18 19:50:58,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:58,030 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-18 19:50:58,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:50:58,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:58,031 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:58,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:58,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:58,239 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-18 19:50:58,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:58,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1415019625, now seen corresponding path program 1 times [2022-11-18 19:50:58,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:58,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493822020] [2022-11-18 19:50:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:58,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:50:58,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:58,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493822020] [2022-11-18 19:50:58,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493822020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:58,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:58,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:50:58,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943632357] [2022-11-18 19:50:58,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:58,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:50:58,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:58,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:50:58,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:58,305 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:58,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:58,319 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-11-18 19:50:58,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:50:58,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 19:50:58,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:58,320 INFO L225 Difference]: With dead ends: 27 [2022-11-18 19:50:58,320 INFO L226 Difference]: Without dead ends: 17 [2022-11-18 19:50:58,321 INFO L412 NwaCegarLoop]: 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 [2022-11-18 19:50:58,321 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:58,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 20 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:50:58,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-18 19:50:58,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-18 19:50:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:58,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-18 19:50:58,324 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2022-11-18 19:50:58,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:58,324 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-18 19:50:58,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:58,325 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-18 19:50:58,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:50:58,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:58,325 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:58,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:50:58,326 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-18 19:50:58,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:58,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1293876800, now seen corresponding path program 2 times [2022-11-18 19:50:58,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:58,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314292297] [2022-11-18 19:50:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:58,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:58,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:58,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314292297] [2022-11-18 19:50:58,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314292297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:58,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191732290] [2022-11-18 19:50:58,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:50:58,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:58,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:58,895 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:58,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:50:58,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:50:58,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:58,988 WARN L261 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 19:50:58,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:59,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:50:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:59,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:00,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:00,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191732290] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:00,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:00,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2022-11-18 19:51:00,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314785076] [2022-11-18 19:51:00,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:00,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:51:00,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:00,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:51:00,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:51:00,308 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 33 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:01,131 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-11-18 19:51:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:51:01,132 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:51:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:01,132 INFO L225 Difference]: With dead ends: 21 [2022-11-18 19:51:01,132 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 19:51:01,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=286, Invalid=1694, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 19:51:01,134 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 52 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:01,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 84 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:51:01,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 19:51:01,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 19:51:01,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:01,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 19:51:01,135 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-11-18 19:51:01,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:01,135 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 19:51:01,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:01,136 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 19:51:01,136 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 19:51:01,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2022-11-18 19:51:01,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2022-11-18 19:51:01,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2022-11-18 19:51:01,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 19:51:01,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:01,347 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:01,349 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:51:01,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:51:01 BoogieIcfgContainer [2022-11-18 19:51:01,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:51:01,355 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:51:01,355 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:51:01,355 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:51:01,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:50:52" (3/4) ... [2022-11-18 19:51:01,359 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 19:51:01,370 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-18 19:51:01,370 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-18 19:51:01,370 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 19:51:01,371 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 19:51:01,404 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 19:51:01,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:51:01,408 INFO L158 Benchmark]: Toolchain (without parser) took 10114.97ms. Allocated memory was 90.2MB in the beginning and 163.6MB in the end (delta: 73.4MB). Free memory was 53.5MB in the beginning and 63.1MB in the end (delta: -9.6MB). Peak memory consumption was 62.5MB. Max. memory is 16.1GB. [2022-11-18 19:51:01,408 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:51:01,408 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.58ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.3MB in the beginning and 79.6MB in the end (delta: -26.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 19:51:01,409 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.59ms. Allocated memory is still 109.1MB. Free memory was 79.6MB in the beginning and 78.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:51:01,410 INFO L158 Benchmark]: Boogie Preprocessor took 24.80ms. Allocated memory is still 109.1MB. Free memory was 78.0MB in the beginning and 76.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:51:01,410 INFO L158 Benchmark]: RCFGBuilder took 283.11ms. Allocated memory is still 109.1MB. Free memory was 76.5MB in the beginning and 66.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 19:51:01,410 INFO L158 Benchmark]: TraceAbstraction took 9272.87ms. Allocated memory was 109.1MB in the beginning and 163.6MB in the end (delta: 54.5MB). Free memory was 65.5MB in the beginning and 65.9MB in the end (delta: -378.7kB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. [2022-11-18 19:51:01,411 INFO L158 Benchmark]: Witness Printer took 52.60ms. Allocated memory is still 163.6MB. Free memory was 65.2MB in the beginning and 63.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:51:01,416 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 417.58ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.3MB in the beginning and 79.6MB in the end (delta: -26.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.59ms. Allocated memory is still 109.1MB. Free memory was 79.6MB in the beginning and 78.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.80ms. Allocated memory is still 109.1MB. Free memory was 78.0MB in the beginning and 76.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 283.11ms. Allocated memory is still 109.1MB. Free memory was 76.5MB in the beginning and 66.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9272.87ms. Allocated memory was 109.1MB in the beginning and 163.6MB in the end (delta: 54.5MB). Free memory was 65.5MB in the beginning and 65.9MB in the end (delta: -378.7kB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. * Witness Printer took 52.60ms. Allocated memory is still 163.6MB. Free memory was 65.2MB in the beginning and 63.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 554]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9.2s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 257 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 257 mSDsluCounter, 610 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 467 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 531 IncrementalHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 143 mSDtfsCounter, 531 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 202 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=10, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 60 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 203 ConstructedInterpolants, 0 QuantifiedInterpolants, 2055 SizeOfPredicates, 39 NumberOfNonLiveVariables, 368 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 10/59 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 19:51:01,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eb3a14f-3064-40da-a729-f1f4d8269e53/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE