./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- 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-6b4ec56 [2022-11-20 10:54:20,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:54:20,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:54:20,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:54:20,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:54:20,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:54:20,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:54:20,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:54:20,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:54:20,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:54:20,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:54:20,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:54:20,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:54:20,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:54:20,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:54:20,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:54:20,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:54:20,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:54:20,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:54:20,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:54:20,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:54:20,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:54:20,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:54:20,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:54:20,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:54:20,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:54:20,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:54:20,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:54:20,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:54:20,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:54:20,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:54:20,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:54:20,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:54:20,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:54:20,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:54:20,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:54:20,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:54:20,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:54:20,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:54:20,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:54:20,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:54:20,206 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 10:54:20,227 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:54:20,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:54:20,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:54:20,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:54:20,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:54:20,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:54:20,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:54:20,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:54:20,230 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:54:20,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:54:20,231 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:54:20,231 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:54:20,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:54:20,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:54:20,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:54:20,232 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 10:54:20,233 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 10:54:20,233 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 10:54:20,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:54:20,233 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:54:20,234 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:54:20,234 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:54:20,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:54:20,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:54:20,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:54:20,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:54:20,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:54:20,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:54:20,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:54:20,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:54:20,236 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_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2022-11-20 10:54:20,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:54:20,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:54:20,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:54:20,562 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:54:20,562 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:54:20,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2022-11-20 10:54:23,597 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:54:23,941 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:54:23,941 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2022-11-20 10:54:23,969 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/data/8a28cce4b/74fb18246416488483627e70580bc9de/FLAG904889ab7 [2022-11-20 10:54:23,984 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/data/8a28cce4b/74fb18246416488483627e70580bc9de [2022-11-20 10:54:23,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:54:23,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:54:24,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:54:24,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:54:24,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:54:24,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:54:23" (1/1) ... [2022-11-20 10:54:24,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6afbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:24, skipping insertion in model container [2022-11-20 10:54:24,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:54:23" (1/1) ... [2022-11-20 10:54:24,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:54:24,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:54:24,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:54:24,791 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:54:24,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:54:24,927 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:54:24,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:24 WrapperNode [2022-11-20 10:54:24,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:54:24,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:54:24,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:54:24,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:54:24,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:24" (1/1) ... [2022-11-20 10:54:24,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:24" (1/1) ... [2022-11-20 10:54:24,978 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2022-11-20 10:54:24,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:54:24,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:54:24,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:54:24,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:54:24,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:24" (1/1) ... [2022-11-20 10:54:24,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:24" (1/1) ... [2022-11-20 10:54:24,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:24" (1/1) ... [2022-11-20 10:54:24,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:24" (1/1) ... [2022-11-20 10:54:25,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:24" (1/1) ... [2022-11-20 10:54:25,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:24" (1/1) ... [2022-11-20 10:54:25,008 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:24" (1/1) ... [2022-11-20 10:54:25,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:24" (1/1) ... [2022-11-20 10:54:25,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:54:25,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:54:25,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:54:25,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:54:25,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:24" (1/1) ... [2022-11-20 10:54:25,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:54:25,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:25,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:54:25,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:54:25,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:54:25,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:54:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:54:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:54:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:54:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:54:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 10:54:25,106 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 10:54:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:54:25,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:54:25,109 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:54:25,365 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:54:25,368 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:54:25,596 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:54:25,604 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:54:25,607 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:54:25,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:25 BoogieIcfgContainer [2022-11-20 10:54:25,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:54:25,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:54:25,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:54:25,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:54:25,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:54:23" (1/3) ... [2022-11-20 10:54:25,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dec8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:54:25, skipping insertion in model container [2022-11-20 10:54:25,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:24" (2/3) ... [2022-11-20 10:54:25,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dec8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:54:25, skipping insertion in model container [2022-11-20 10:54:25,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:25" (3/3) ... [2022-11-20 10:54:25,623 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2022-11-20 10:54:25,646 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:54:25,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-20 10:54:25,647 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:54:25,713 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 10:54:25,751 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:54:25,768 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 89 transitions, 183 flow [2022-11-20 10:54:25,771 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 89 transitions, 183 flow [2022-11-20 10:54:25,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 89 transitions, 183 flow [2022-11-20 10:54:25,822 INFO L130 PetriNetUnfolder]: 4/88 cut-off events. [2022-11-20 10:54:25,823 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:54:25,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 88 events. 4/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2022-11-20 10:54:25,829 INFO L119 LiptonReduction]: Number of co-enabled transitions 1242 [2022-11-20 10:54:29,072 INFO L134 LiptonReduction]: Checked pairs total: 2462 [2022-11-20 10:54:29,073 INFO L136 LiptonReduction]: Total number of compositions: 97 [2022-11-20 10:54:29,083 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 25 transitions, 55 flow [2022-11-20 10:54:29,117 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 102 states, 71 states have (on average 2.535211267605634) internal successors, (180), 101 states have internal predecessors, (180), 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) [2022-11-20 10:54:29,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:54:29,151 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;@4a17381f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:54:29,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-20 10:54:29,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 71 states have (on average 2.535211267605634) internal successors, (180), 101 states have internal predecessors, (180), 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) [2022-11-20 10:54:29,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 10:54:29,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:29,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 10:54:29,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 10:54:29,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:29,168 INFO L85 PathProgramCache]: Analyzing trace with hash 10825, now seen corresponding path program 1 times [2022-11-20 10:54:29,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:29,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530840271] [2022-11-20 10:54:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:29,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:29,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:29,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530840271] [2022-11-20 10:54:29,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530840271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:29,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:29,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:54:29,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399106200] [2022-11-20 10:54:29,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:29,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:54:29,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:29,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:54:29,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:54:29,450 INFO L87 Difference]: Start difference. First operand has 102 states, 71 states have (on average 2.535211267605634) internal successors, (180), 101 states have internal predecessors, (180), 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 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-20 10:54:29,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:29,513 INFO L93 Difference]: Finished difference Result 73 states and 127 transitions. [2022-11-20 10:54:29,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:54:29,516 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-20 10:54:29,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:29,527 INFO L225 Difference]: With dead ends: 73 [2022-11-20 10:54:29,528 INFO L226 Difference]: Without dead ends: 73 [2022-11-20 10:54:29,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:54:29,534 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:29,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:29,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-20 10:54:29,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-20 10:54:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 2.189655172413793) internal successors, (127), 72 states have internal predecessors, (127), 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) [2022-11-20 10:54:29,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 127 transitions. [2022-11-20 10:54:29,576 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 127 transitions. Word has length 2 [2022-11-20 10:54:29,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:29,576 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 127 transitions. [2022-11-20 10:54:29,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-20 10:54:29,577 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 127 transitions. [2022-11-20 10:54:29,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 10:54:29,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:29,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 10:54:29,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:54:29,578 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 10:54:29,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:29,579 INFO L85 PathProgramCache]: Analyzing trace with hash 10409097, now seen corresponding path program 1 times [2022-11-20 10:54:29,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:29,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064514481] [2022-11-20 10:54:29,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:29,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:29,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:29,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064514481] [2022-11-20 10:54:29,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064514481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:29,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:29,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:54:29,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239582177] [2022-11-20 10:54:29,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:29,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:54:29,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:29,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:54:29,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:29,734 INFO L87 Difference]: Start difference. First operand 73 states and 127 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-20 10:54:29,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:29,787 INFO L93 Difference]: Finished difference Result 74 states and 128 transitions. [2022-11-20 10:54:29,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:54:29,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-20 10:54:29,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:29,790 INFO L225 Difference]: With dead ends: 74 [2022-11-20 10:54:29,791 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 10:54:29,792 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 [2022-11-20 10:54:29,795 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:29,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 10:54:29,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-20 10:54:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 2.169491525423729) internal successors, (128), 73 states have internal predecessors, (128), 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) [2022-11-20 10:54:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 128 transitions. [2022-11-20 10:54:29,817 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 128 transitions. Word has length 4 [2022-11-20 10:54:29,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:29,818 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 128 transitions. [2022-11-20 10:54:29,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-20 10:54:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 128 transitions. [2022-11-20 10:54:29,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:54:29,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:29,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:54:29,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:54:29,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 10:54:29,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:29,823 INFO L85 PathProgramCache]: Analyzing trace with hash 322082539, now seen corresponding path program 1 times [2022-11-20 10:54:29,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:29,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137562342] [2022-11-20 10:54:29,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:29,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:29,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:29,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137562342] [2022-11-20 10:54:29,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137562342] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:29,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19058040] [2022-11-20 10:54:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:29,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:29,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:29,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:29,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:54:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:30,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:54:30,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:30,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:30,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19058040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:30,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:30,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-20 10:54:30,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833375752] [2022-11-20 10:54:30,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:30,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:54:30,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:30,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:54:30,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:30,152 INFO L87 Difference]: Start difference. First operand 74 states and 128 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-20 10:54:30,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:30,256 INFO L93 Difference]: Finished difference Result 77 states and 131 transitions. [2022-11-20 10:54:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:30,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 5 [2022-11-20 10:54:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:30,276 INFO L225 Difference]: With dead ends: 77 [2022-11-20 10:54:30,276 INFO L226 Difference]: Without dead ends: 77 [2022-11-20 10:54:30,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:30,277 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:30,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:54:30,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-20 10:54:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-20 10:54:30,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 2.1129032258064515) internal successors, (131), 76 states have internal predecessors, (131), 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) [2022-11-20 10:54:30,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 131 transitions. [2022-11-20 10:54:30,285 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 131 transitions. Word has length 5 [2022-11-20 10:54:30,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:30,286 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 131 transitions. [2022-11-20 10:54:30,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-20 10:54:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 131 transitions. [2022-11-20 10:54:30,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:54:30,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:30,302 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-20 10:54:30,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:30,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:30,514 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 10:54:30,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:30,515 INFO L85 PathProgramCache]: Analyzing trace with hash -391291639, now seen corresponding path program 2 times [2022-11-20 10:54:30,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:30,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130832416] [2022-11-20 10:54:30,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:30,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:30,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:30,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130832416] [2022-11-20 10:54:30,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130832416] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:30,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721857170] [2022-11-20 10:54:30,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:54:30,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:30,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:30,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:30,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:54:30,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:54:30,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:54:30,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:54:30,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:30,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:54:30,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 10:54:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 10:54:30,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:54:30,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721857170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:30,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:30,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2022-11-20 10:54:30,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386683900] [2022-11-20 10:54:30,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:30,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:30,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:30,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:30,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:54:30,997 INFO L87 Difference]: Start difference. First operand 77 states and 131 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-20 10:54:31,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:31,052 INFO L93 Difference]: Finished difference Result 68 states and 114 transitions. [2022-11-20 10:54:31,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:54:31,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 [2022-11-20 10:54:31,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:31,054 INFO L225 Difference]: With dead ends: 68 [2022-11-20 10:54:31,054 INFO L226 Difference]: Without dead ends: 68 [2022-11-20 10:54:31,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:54:31,061 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 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 [2022-11-20 10:54:31,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:31,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-20 10:54:31,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-20 10:54:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 57 states have (on average 2.0) internal successors, (114), 67 states have internal predecessors, (114), 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) [2022-11-20 10:54:31,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 114 transitions. [2022-11-20 10:54:31,070 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 114 transitions. Word has length 8 [2022-11-20 10:54:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:31,071 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 114 transitions. [2022-11-20 10:54:31,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-20 10:54:31,072 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 114 transitions. [2022-11-20 10:54:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:54:31,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:31,073 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-20 10:54:31,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:31,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:31,279 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 10:54:31,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:31,279 INFO L85 PathProgramCache]: Analyzing trace with hash -391291663, now seen corresponding path program 1 times [2022-11-20 10:54:31,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:31,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421590915] [2022-11-20 10:54:31,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:31,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:31,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:31,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421590915] [2022-11-20 10:54:31,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421590915] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:31,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652631005] [2022-11-20 10:54:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:31,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:31,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:31,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:31,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:54:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:31,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:54:31,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:31,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:31,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:31,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652631005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:31,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:31,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-20 10:54:31,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459020136] [2022-11-20 10:54:31,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:31,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:54:31,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:31,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:54:31,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:54:31,595 INFO L87 Difference]: Start difference. First operand 68 states and 114 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 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) [2022-11-20 10:54:31,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:31,667 INFO L93 Difference]: Finished difference Result 74 states and 120 transitions. [2022-11-20 10:54:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:54:31,669 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 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) Word has length 8 [2022-11-20 10:54:31,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:31,674 INFO L225 Difference]: With dead ends: 74 [2022-11-20 10:54:31,675 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 10:54:31,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:54:31,682 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:31,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:54:31,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 10:54:31,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-20 10:54:31,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 63 states have (on average 1.9047619047619047) internal successors, (120), 73 states have internal predecessors, (120), 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) [2022-11-20 10:54:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 120 transitions. [2022-11-20 10:54:31,700 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 120 transitions. Word has length 8 [2022-11-20 10:54:31,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:31,701 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 120 transitions. [2022-11-20 10:54:31,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 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) [2022-11-20 10:54:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 120 transitions. [2022-11-20 10:54:31,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:54:31,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:31,702 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2022-11-20 10:54:31,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:31,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:31,908 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 10:54:31,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:31,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1506521521, now seen corresponding path program 2 times [2022-11-20 10:54:31,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:31,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927626232] [2022-11-20 10:54:31,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:31,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 10:54:32,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:32,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927626232] [2022-11-20 10:54:32,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927626232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:32,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:32,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:54:32,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992199645] [2022-11-20 10:54:32,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:32,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:32,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:32,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:32,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:32,130 INFO L87 Difference]: Start difference. First operand 74 states and 120 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-20 10:54:32,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:32,187 INFO L93 Difference]: Finished difference Result 59 states and 83 transitions. [2022-11-20 10:54:32,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:32,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 14 [2022-11-20 10:54:32,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:32,189 INFO L225 Difference]: With dead ends: 59 [2022-11-20 10:54:32,189 INFO L226 Difference]: Without dead ends: 58 [2022-11-20 10:54:32,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:32,193 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:32,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:32,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-20 10:54:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2022-11-20 10:54:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.62) internal successors, (81), 55 states have internal predecessors, (81), 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) [2022-11-20 10:54:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 81 transitions. [2022-11-20 10:54:32,218 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 81 transitions. Word has length 14 [2022-11-20 10:54:32,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:32,219 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 81 transitions. [2022-11-20 10:54:32,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-20 10:54:32,219 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 81 transitions. [2022-11-20 10:54:32,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:54:32,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:32,223 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2022-11-20 10:54:32,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:54:32,224 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 10:54:32,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:32,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1506521522, now seen corresponding path program 1 times [2022-11-20 10:54:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:32,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758942139] [2022-11-20 10:54:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:32,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 10:54:32,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:32,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758942139] [2022-11-20 10:54:32,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758942139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:32,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:32,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:54:32,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148149142] [2022-11-20 10:54:32,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:32,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:32,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:32,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:32,499 INFO L87 Difference]: Start difference. First operand 56 states and 81 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-20 10:54:32,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:32,556 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2022-11-20 10:54:32,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:32,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 14 [2022-11-20 10:54:32,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:32,557 INFO L225 Difference]: With dead ends: 51 [2022-11-20 10:54:32,558 INFO L226 Difference]: Without dead ends: 51 [2022-11-20 10:54:32,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:54:32,565 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:32,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-20 10:54:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-20 10:54:32,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.565217391304348) internal successors, (72), 50 states have internal predecessors, (72), 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) [2022-11-20 10:54:32,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2022-11-20 10:54:32,575 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 14 [2022-11-20 10:54:32,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:32,576 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2022-11-20 10:54:32,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-20 10:54:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2022-11-20 10:54:32,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 10:54:32,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:32,578 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:32,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:54:32,578 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 10:54:32,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:32,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1128301312, now seen corresponding path program 1 times [2022-11-20 10:54:32,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:32,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780114933] [2022-11-20 10:54:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:32,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 10:54:32,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:32,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780114933] [2022-11-20 10:54:32,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780114933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:32,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:32,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:54:32,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788505146] [2022-11-20 10:54:32,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:32,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:32,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:32,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:32,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:32,761 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-20 10:54:32,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:32,800 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2022-11-20 10:54:32,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:32,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 18 [2022-11-20 10:54:32,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:32,801 INFO L225 Difference]: With dead ends: 43 [2022-11-20 10:54:32,801 INFO L226 Difference]: Without dead ends: 33 [2022-11-20 10:54:32,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:32,804 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:32,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:32,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-20 10:54:32,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-20 10:54:32,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 32 states have internal predecessors, (42), 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) [2022-11-20 10:54:32,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-11-20 10:54:32,810 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 18 [2022-11-20 10:54:32,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:32,810 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-11-20 10:54:32,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-20 10:54:32,811 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-11-20 10:54:32,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 10:54:32,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:32,812 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:32,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:54:32,813 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 10:54:32,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:32,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1965842131, now seen corresponding path program 1 times [2022-11-20 10:54:32,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:32,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362228779] [2022-11-20 10:54:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:32,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 10:54:32,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:32,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362228779] [2022-11-20 10:54:32,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362228779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:32,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:32,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:32,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703429153] [2022-11-20 10:54:32,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:32,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:32,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:32,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:32,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:54:32,956 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-20 10:54:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:32,991 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-11-20 10:54:32,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:32,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 20 [2022-11-20 10:54:32,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:32,992 INFO L225 Difference]: With dead ends: 31 [2022-11-20 10:54:32,992 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 10:54:32,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:54:32,994 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:32,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:32,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 10:54:32,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 10:54:32,995 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) [2022-11-20 10:54:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 10:54:32,996 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-11-20 10:54:32,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:32,996 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:54:32,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-20 10:54:32,997 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 10:54:32,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 10:54:33,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 16 remaining) [2022-11-20 10:54:33,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 16 remaining) [2022-11-20 10:54:33,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2022-11-20 10:54:33,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2022-11-20 10:54:33,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2022-11-20 10:54:33,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2022-11-20 10:54:33,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (9 of 16 remaining) [2022-11-20 10:54:33,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2022-11-20 10:54:33,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 16 remaining) [2022-11-20 10:54:33,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2022-11-20 10:54:33,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2022-11-20 10:54:33,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2022-11-20 10:54:33,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 16 remaining) [2022-11-20 10:54:33,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 16 remaining) [2022-11-20 10:54:33,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 16 remaining) [2022-11-20 10:54:33,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 16 remaining) [2022-11-20 10:54:33,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:54:33,014 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:54:33,019 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 10:54:33,020 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:54:33,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:54:33 BasicIcfg [2022-11-20 10:54:33,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:54:33,023 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:54:33,024 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:54:33,024 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:54:33,025 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:25" (3/4) ... [2022-11-20 10:54:33,029 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:54:33,036 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-20 10:54:33,043 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-20 10:54:33,043 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 10:54:33,044 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 10:54:33,087 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:54:33,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:54:33,088 INFO L158 Benchmark]: Toolchain (without parser) took 9091.19ms. Allocated memory was 172.0MB in the beginning and 226.5MB in the end (delta: 54.5MB). Free memory was 137.1MB in the beginning and 140.2MB in the end (delta: -3.1MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. [2022-11-20 10:54:33,088 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 172.0MB. Free memory was 146.0MB in the beginning and 145.7MB in the end (delta: 243.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:54:33,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 927.59ms. Allocated memory is still 172.0MB. Free memory was 137.1MB in the beginning and 109.0MB in the end (delta: 28.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-20 10:54:33,089 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.64ms. Allocated memory is still 172.0MB. Free memory was 109.0MB in the beginning and 107.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:54:33,089 INFO L158 Benchmark]: Boogie Preprocessor took 32.51ms. Allocated memory is still 172.0MB. Free memory was 107.0MB in the beginning and 105.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:54:33,090 INFO L158 Benchmark]: RCFGBuilder took 598.55ms. Allocated memory is still 172.0MB. Free memory was 104.9MB in the beginning and 90.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 10:54:33,090 INFO L158 Benchmark]: TraceAbstraction took 7408.28ms. Allocated memory was 172.0MB in the beginning and 226.5MB in the end (delta: 54.5MB). Free memory was 89.6MB in the beginning and 143.3MB in the end (delta: -53.7MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2022-11-20 10:54:33,091 INFO L158 Benchmark]: Witness Printer took 63.64ms. Allocated memory is still 226.5MB. Free memory was 143.3MB in the beginning and 140.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:54:33,094 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 172.0MB. Free memory was 146.0MB in the beginning and 145.7MB in the end (delta: 243.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 927.59ms. Allocated memory is still 172.0MB. Free memory was 137.1MB in the beginning and 109.0MB in the end (delta: 28.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.64ms. Allocated memory is still 172.0MB. Free memory was 109.0MB in the beginning and 107.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.51ms. Allocated memory is still 172.0MB. Free memory was 107.0MB in the beginning and 105.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 598.55ms. Allocated memory is still 172.0MB. Free memory was 104.9MB in the beginning and 90.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7408.28ms. Allocated memory was 172.0MB in the beginning and 226.5MB in the end (delta: 54.5MB). Free memory was 89.6MB in the beginning and 143.3MB in the end (delta: -53.7MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * Witness Printer took 63.64ms. Allocated memory is still 226.5MB. Free memory was 143.3MB in the beginning and 140.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 89 PlacesBefore, 28 PlacesAfterwards, 89 TransitionsBefore, 25 TransitionsAfterwards, 1242 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 97 TotalNumberOfCompositions, 2462 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1695, independent: 1573, independent conditional: 0, independent unconditional: 1573, dependent: 122, dependent conditional: 0, dependent unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 950, independent: 921, independent conditional: 0, independent unconditional: 921, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 950, independent: 912, independent conditional: 0, independent unconditional: 912, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 38, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 169, independent: 33, independent conditional: 0, independent unconditional: 33, dependent: 136, dependent conditional: 0, dependent unconditional: 136, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1695, independent: 652, independent conditional: 0, independent unconditional: 652, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 950, unknown conditional: 0, unknown unconditional: 950] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: -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: -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: 935]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: -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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 114 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 7.3s, OverallIterations: 9, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 299 IncrementalHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 9 mSDtfsCounter, 299 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=0, InterpolantAutomatonStates: 42, 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, 9 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 114 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 742 SizeOfPredicates, 2 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 230/273 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 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 10:54:33,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0982c921-d4ed-467e-9207-3be6e0937db2/bin/uautomizer-ug76WZFUDN/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