./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/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_8b262172-86ff-4be7-8d35-b3d223401996/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/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_8b262172-86ff-4be7-8d35-b3d223401996/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 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 --- 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 10:52:41,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:52:41,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:52:41,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:52:41,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:52:41,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:52:41,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:52:41,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:52:41,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:52:41,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:52:41,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:52:41,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:52:41,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:52:41,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:52:41,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:52:41,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:52:41,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:52:41,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:52:41,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:52:41,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:52:41,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:52:41,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:52:41,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:52:41,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:52:41,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:52:41,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:52:41,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:52:41,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:52:41,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:52:41,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:52:41,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:52:41,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:52:41,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:52:41,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:52:41,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:52:41,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:52:41,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:52:41,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:52:41,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:52:41,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:52:41,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:52:41,387 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 10:52:41,407 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:52:41,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:52:41,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:52:41,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:52:41,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:52:41,409 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:52:41,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:52:41,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:52:41,410 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:52:41,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:52:41,410 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:52:41,410 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:52:41,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:52:41,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:52:41,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:52:41,411 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 10:52:41,411 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 10:52:41,412 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 10:52:41,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:52:41,412 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:52:41,412 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:52:41,412 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:52:41,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:52:41,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:52:41,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:52:41,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:52:41,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:52:41,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:52:41,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:52:41,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:52:41,414 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_8b262172-86ff-4be7-8d35-b3d223401996/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 [2022-11-20 10:52:41,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:52:41,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:52:41,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:52:41,701 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:52:41,702 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:52:41,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-20 10:52:44,798 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:52:45,116 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:52:45,116 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-20 10:52:45,128 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/bin/uautomizer-ug76WZFUDN/data/2e40dab39/a328b0b7b69a4c8aa69bbc916fd17423/FLAG49c8a4d41 [2022-11-20 10:52:45,142 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/bin/uautomizer-ug76WZFUDN/data/2e40dab39/a328b0b7b69a4c8aa69bbc916fd17423 [2022-11-20 10:52:45,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:52:45,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:52:45,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:52:45,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:52:45,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:52:45,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:52:45" (1/1) ... [2022-11-20 10:52:45,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e378ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:45, skipping insertion in model container [2022-11-20 10:52:45,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:52:45" (1/1) ... [2022-11-20 10:52:45,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:52:45,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:52:45,364 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-20 10:52:45,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:52:45,568 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:52:45,581 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-20 10:52:45,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:52:45,647 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:52:45,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:45 WrapperNode [2022-11-20 10:52:45,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:52:45,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:52:45,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:52:45,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:52:45,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:45" (1/1) ... [2022-11-20 10:52:45,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:45" (1/1) ... [2022-11-20 10:52:45,691 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2022-11-20 10:52:45,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:52:45,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:52:45,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:52:45,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:52:45,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:45" (1/1) ... [2022-11-20 10:52:45,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:45" (1/1) ... [2022-11-20 10:52:45,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:45" (1/1) ... [2022-11-20 10:52:45,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:45" (1/1) ... [2022-11-20 10:52:45,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:45" (1/1) ... [2022-11-20 10:52:45,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:45" (1/1) ... [2022-11-20 10:52:45,714 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:45" (1/1) ... [2022-11-20 10:52:45,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:45" (1/1) ... [2022-11-20 10:52:45,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:52:45,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:52:45,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:52:45,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:52:45,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:45" (1/1) ... [2022-11-20 10:52:45,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:52:45,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:45,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:52:45,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:52:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:52:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:52:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:52:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:52:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:52:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 10:52:45,816 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 10:52:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 10:52:45,817 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 10:52:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-20 10:52:45,818 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-20 10:52:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-20 10:52:45,818 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-20 10:52:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:52:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:52:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:52:45,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:52:45,820 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 10:52:45,952 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:52:45,954 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:52:46,223 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:52:46,231 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:52:46,231 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:52:46,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:52:46 BoogieIcfgContainer [2022-11-20 10:52:46,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:52:46,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:52:46,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:52:46,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:52:46,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:52:45" (1/3) ... [2022-11-20 10:52:46,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c52701b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:52:46, skipping insertion in model container [2022-11-20 10:52:46,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:45" (2/3) ... [2022-11-20 10:52:46,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c52701b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:52:46, skipping insertion in model container [2022-11-20 10:52:46,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:52:46" (3/3) ... [2022-11-20 10:52:46,244 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-20 10:52:46,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:52:46,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-20 10:52:46,269 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:52:46,433 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 10:52:46,493 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:52:46,514 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 119 transitions, 258 flow [2022-11-20 10:52:46,519 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 119 transitions, 258 flow [2022-11-20 10:52:46,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 119 transitions, 258 flow [2022-11-20 10:52:46,602 INFO L130 PetriNetUnfolder]: 2/115 cut-off events. [2022-11-20 10:52:46,602 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:52:46,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 115 events. 2/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-11-20 10:52:46,617 INFO L119 LiptonReduction]: Number of co-enabled transitions 2602 [2022-11-20 10:52:51,045 INFO L134 LiptonReduction]: Checked pairs total: 4905 [2022-11-20 10:52:51,045 INFO L136 LiptonReduction]: Total number of compositions: 127 [2022-11-20 10:52:51,053 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 34 transitions, 88 flow [2022-11-20 10:52:51,147 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 836 states, 826 states have (on average 3.414043583535109) internal successors, (2820), 835 states have internal predecessors, (2820), 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 10:52:51,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:52:51,172 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;@1cd1c2fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:52:51,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-20 10:52:51,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 826 states have (on average 3.414043583535109) internal successors, (2820), 835 states have internal predecessors, (2820), 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 10:52:51,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 10:52:51,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:51,183 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 10:52:51,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:51,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:51,188 INFO L85 PathProgramCache]: Analyzing trace with hash 424, now seen corresponding path program 1 times [2022-11-20 10:52:51,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:51,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948787134] [2022-11-20 10:52:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:51,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:51,313 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 10:52:51,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:51,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948787134] [2022-11-20 10:52:51,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948787134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:51,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:51,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 10:52:51,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865846590] [2022-11-20 10:52:51,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:51,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:52:51,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:51,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:52:51,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:52:51,358 INFO L87 Difference]: Start difference. First operand has 836 states, 826 states have (on average 3.414043583535109) internal successors, (2820), 835 states have internal predecessors, (2820), 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 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 10:52:51,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:51,455 INFO L93 Difference]: Finished difference Result 706 states and 2442 transitions. [2022-11-20 10:52:51,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:52:51,457 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-20 10:52:51,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:51,481 INFO L225 Difference]: With dead ends: 706 [2022-11-20 10:52:51,481 INFO L226 Difference]: Without dead ends: 706 [2022-11-20 10:52:51,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 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 10:52:51,488 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:51,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:52:51,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-11-20 10:52:51,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2022-11-20 10:52:51,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 704 states have (on average 3.46875) internal successors, (2442), 705 states have internal predecessors, (2442), 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 10:52:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2022-11-20 10:52:51,607 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 1 [2022-11-20 10:52:51,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:51,607 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2022-11-20 10:52:51,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 10:52:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2022-11-20 10:52:51,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 10:52:51,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:51,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:51,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:52:51,610 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:51,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:51,611 INFO L85 PathProgramCache]: Analyzing trace with hash -327098607, now seen corresponding path program 1 times [2022-11-20 10:52:51,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:51,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88376195] [2022-11-20 10:52:51,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:51,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:52,151 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 10:52:52,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:52,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88376195] [2022-11-20 10:52:52,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88376195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:52,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:52,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:52:52,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730184514] [2022-11-20 10:52:52,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:52,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:52:52,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:52,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:52:52,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:52:52,155 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 10:52:52,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:52,259 INFO L93 Difference]: Finished difference Result 832 states and 2781 transitions. [2022-11-20 10:52:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:52:52,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 10 [2022-11-20 10:52:52,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:52,269 INFO L225 Difference]: With dead ends: 832 [2022-11-20 10:52:52,276 INFO L226 Difference]: Without dead ends: 832 [2022-11-20 10:52:52,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 10:52:52,279 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:52,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:52:52,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-11-20 10:52:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 697. [2022-11-20 10:52:52,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 695 states have (on average 3.4575539568345324) internal successors, (2403), 696 states have internal predecessors, (2403), 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 10:52:52,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 2403 transitions. [2022-11-20 10:52:52,329 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 2403 transitions. Word has length 10 [2022-11-20 10:52:52,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:52,330 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 2403 transitions. [2022-11-20 10:52:52,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 10:52:52,330 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 2403 transitions. [2022-11-20 10:52:52,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 10:52:52,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:52,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:52,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:52:52,334 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:52,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:52,335 INFO L85 PathProgramCache]: Analyzing trace with hash -327098601, now seen corresponding path program 1 times [2022-11-20 10:52:52,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:52,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079285790] [2022-11-20 10:52:52,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:52,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:53,026 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 10:52:53,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:53,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079285790] [2022-11-20 10:52:53,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079285790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:53,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:53,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:52:53,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13585471] [2022-11-20 10:52:53,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:53,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:52:53,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:53,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:52:53,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:52:53,030 INFO L87 Difference]: Start difference. First operand 697 states and 2403 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 10:52:53,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:53,213 INFO L93 Difference]: Finished difference Result 634 states and 2148 transitions. [2022-11-20 10:52:53,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:52:53,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 10 [2022-11-20 10:52:53,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:53,219 INFO L225 Difference]: With dead ends: 634 [2022-11-20 10:52:53,219 INFO L226 Difference]: Without dead ends: 634 [2022-11-20 10:52:53,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:52:53,223 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:53,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 13 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:52:53,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-11-20 10:52:53,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2022-11-20 10:52:53,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 632 states have (on average 3.3987341772151898) internal successors, (2148), 633 states have internal predecessors, (2148), 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 10:52:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2022-11-20 10:52:53,250 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 10 [2022-11-20 10:52:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:53,250 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2022-11-20 10:52:53,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 10:52:53,251 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2022-11-20 10:52:53,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:52:53,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:53,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:53,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:52:53,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:53,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1548837938, now seen corresponding path program 1 times [2022-11-20 10:52:53,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:53,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913905358] [2022-11-20 10:52:53,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:53,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:53,431 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 10:52:53,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:53,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913905358] [2022-11-20 10:52:53,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913905358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:53,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:53,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:52:53,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283901383] [2022-11-20 10:52:53,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:53,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:52:53,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:53,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:52:53,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:52:53,439 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 10:52:53,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:53,520 INFO L93 Difference]: Finished difference Result 688 states and 2256 transitions. [2022-11-20 10:52:53,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:52:53,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 11 [2022-11-20 10:52:53,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:53,526 INFO L225 Difference]: With dead ends: 688 [2022-11-20 10:52:53,526 INFO L226 Difference]: Without dead ends: 688 [2022-11-20 10:52:53,526 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 10:52:53,528 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:53,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 7 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:52:53,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-11-20 10:52:53,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 607. [2022-11-20 10:52:53,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 605 states have (on average 3.371900826446281) internal successors, (2040), 606 states have internal predecessors, (2040), 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 10:52:53,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 2040 transitions. [2022-11-20 10:52:53,556 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 2040 transitions. Word has length 11 [2022-11-20 10:52:53,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:53,556 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 2040 transitions. [2022-11-20 10:52:53,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 10:52:53,557 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 2040 transitions. [2022-11-20 10:52:53,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:52:53,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:53,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:53,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:52:53,559 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:53,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:53,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1548837932, now seen corresponding path program 1 times [2022-11-20 10:52:53,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:53,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549218164] [2022-11-20 10:52:53,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:53,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:54,148 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 10:52:54,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:54,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549218164] [2022-11-20 10:52:54,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549218164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:54,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:54,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:52:54,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373448922] [2022-11-20 10:52:54,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:54,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:52:54,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:54,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:52:54,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:52:54,154 INFO L87 Difference]: Start difference. First operand 607 states and 2040 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 10:52:54,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:54,449 INFO L93 Difference]: Finished difference Result 823 states and 2706 transitions. [2022-11-20 10:52:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:52:54,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 11 [2022-11-20 10:52:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:54,454 INFO L225 Difference]: With dead ends: 823 [2022-11-20 10:52:54,454 INFO L226 Difference]: Without dead ends: 571 [2022-11-20 10:52:54,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:52:54,455 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 45 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:54,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 21 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:52:54,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-20 10:52:54,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2022-11-20 10:52:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 569 states have (on average 3.263620386643234) internal successors, (1857), 570 states have internal predecessors, (1857), 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 10:52:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 1857 transitions. [2022-11-20 10:52:54,483 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 1857 transitions. Word has length 11 [2022-11-20 10:52:54,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:54,484 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 1857 transitions. [2022-11-20 10:52:54,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 10:52:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 1857 transitions. [2022-11-20 10:52:54,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 10:52:54,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:54,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:54,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:52:54,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:54,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:54,487 INFO L85 PathProgramCache]: Analyzing trace with hash 723106005, now seen corresponding path program 1 times [2022-11-20 10:52:54,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:54,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302749234] [2022-11-20 10:52:54,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:54,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:54,639 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 10:52:54,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:54,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302749234] [2022-11-20 10:52:54,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302749234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:54,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:54,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:52:54,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582244039] [2022-11-20 10:52:54,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:54,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:52:54,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:54,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:52:54,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:52:54,642 INFO L87 Difference]: Start difference. First operand 571 states and 1857 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:54,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:54,739 INFO L93 Difference]: Finished difference Result 721 states and 2341 transitions. [2022-11-20 10:52:54,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:52:54,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 10:52:54,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:54,745 INFO L225 Difference]: With dead ends: 721 [2022-11-20 10:52:54,746 INFO L226 Difference]: Without dead ends: 721 [2022-11-20 10:52:54,746 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 10:52:54,747 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 32 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:54,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:52:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-11-20 10:52:54,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 643. [2022-11-20 10:52:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 641 states have (on average 3.313572542901716) internal successors, (2124), 642 states have internal predecessors, (2124), 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 10:52:54,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 2124 transitions. [2022-11-20 10:52:54,773 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 2124 transitions. Word has length 12 [2022-11-20 10:52:54,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:54,773 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 2124 transitions. [2022-11-20 10:52:54,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 2124 transitions. [2022-11-20 10:52:54,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 10:52:54,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:54,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:54,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:52:54,775 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:54,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:54,776 INFO L85 PathProgramCache]: Analyzing trace with hash -809207687, now seen corresponding path program 1 times [2022-11-20 10:52:54,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:54,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095783992] [2022-11-20 10:52:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:54,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:55,272 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 10:52:55,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:55,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095783992] [2022-11-20 10:52:55,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095783992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:55,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:55,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:52:55,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120040951] [2022-11-20 10:52:55,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:55,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:52:55,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:52:55,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:52:55,274 INFO L87 Difference]: Start difference. First operand 643 states and 2124 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:55,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:55,412 INFO L93 Difference]: Finished difference Result 625 states and 2055 transitions. [2022-11-20 10:52:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:52:55,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 10:52:55,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:55,417 INFO L225 Difference]: With dead ends: 625 [2022-11-20 10:52:55,417 INFO L226 Difference]: Without dead ends: 625 [2022-11-20 10:52:55,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:52:55,418 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:55,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 21 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:52:55,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-11-20 10:52:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2022-11-20 10:52:55,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 623 states have (on average 3.298555377207063) internal successors, (2055), 624 states have internal predecessors, (2055), 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 10:52:55,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 2055 transitions. [2022-11-20 10:52:55,442 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 2055 transitions. Word has length 12 [2022-11-20 10:52:55,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:55,443 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 2055 transitions. [2022-11-20 10:52:55,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:55,443 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 2055 transitions. [2022-11-20 10:52:55,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 10:52:55,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:55,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:55,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:52:55,445 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:55,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:55,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1720508685, now seen corresponding path program 2 times [2022-11-20 10:52:55,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:55,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730935496] [2022-11-20 10:52:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:55,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:55,547 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 10:52:55,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:55,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730935496] [2022-11-20 10:52:55,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730935496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:55,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:55,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:52:55,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200468355] [2022-11-20 10:52:55,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:55,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:52:55,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:55,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:52:55,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:52:55,549 INFO L87 Difference]: Start difference. First operand 625 states and 2055 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:55,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:55,617 INFO L93 Difference]: Finished difference Result 796 states and 2580 transitions. [2022-11-20 10:52:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:52:55,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 10:52:55,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:55,624 INFO L225 Difference]: With dead ends: 796 [2022-11-20 10:52:55,624 INFO L226 Difference]: Without dead ends: 796 [2022-11-20 10:52:55,625 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 10:52:55,625 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 31 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:55,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 5 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:52:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-20 10:52:55,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 670. [2022-11-20 10:52:55,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 668 states have (on average 3.2604790419161676) internal successors, (2178), 669 states have internal predecessors, (2178), 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 10:52:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 2178 transitions. [2022-11-20 10:52:55,653 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 2178 transitions. Word has length 12 [2022-11-20 10:52:55,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:55,653 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 2178 transitions. [2022-11-20 10:52:55,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:55,653 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 2178 transitions. [2022-11-20 10:52:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:52:55,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:55,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:55,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:52:55,655 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:55,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:55,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1675640432, now seen corresponding path program 1 times [2022-11-20 10:52:55,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:55,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109936197] [2022-11-20 10:52:55,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:55,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:55,772 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 10:52:55,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:55,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109936197] [2022-11-20 10:52:55,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109936197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:55,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:55,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:52:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368205843] [2022-11-20 10:52:55,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:55,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:52:55,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:55,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:52:55,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:52:55,774 INFO L87 Difference]: Start difference. First operand 670 states and 2178 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 10:52:55,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:55,861 INFO L93 Difference]: Finished difference Result 984 states and 3107 transitions. [2022-11-20 10:52:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:52:55,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:52:55,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:55,867 INFO L225 Difference]: With dead ends: 984 [2022-11-20 10:52:55,867 INFO L226 Difference]: Without dead ends: 984 [2022-11-20 10:52:55,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:52:55,868 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 67 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:55,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 3 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:52:55,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-11-20 10:52:55,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 664. [2022-11-20 10:52:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 662 states have (on average 3.188821752265861) internal successors, (2111), 663 states have internal predecessors, (2111), 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 10:52:55,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 2111 transitions. [2022-11-20 10:52:55,896 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 2111 transitions. Word has length 13 [2022-11-20 10:52:55,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:55,897 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 2111 transitions. [2022-11-20 10:52:55,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 10:52:55,897 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 2111 transitions. [2022-11-20 10:52:55,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:52:55,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:55,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:55,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:52:55,899 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:55,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:55,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1675640426, now seen corresponding path program 1 times [2022-11-20 10:52:55,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:55,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239021483] [2022-11-20 10:52:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:55,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:56,401 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 10:52:56,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:56,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239021483] [2022-11-20 10:52:56,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239021483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:56,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:56,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:52:56,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88319605] [2022-11-20 10:52:56,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:56,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:52:56,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:52:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:52:56,403 INFO L87 Difference]: Start difference. First operand 664 states and 2111 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 10:52:56,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:56,681 INFO L93 Difference]: Finished difference Result 934 states and 2948 transitions. [2022-11-20 10:52:56,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:52:56,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:52:56,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:56,686 INFO L225 Difference]: With dead ends: 934 [2022-11-20 10:52:56,686 INFO L226 Difference]: Without dead ends: 646 [2022-11-20 10:52:56,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:52:56,687 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:56,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 14 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:52:56,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-11-20 10:52:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2022-11-20 10:52:56,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 644 states have (on average 3.1785714285714284) internal successors, (2047), 645 states have internal predecessors, (2047), 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 10:52:56,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 2047 transitions. [2022-11-20 10:52:56,710 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 2047 transitions. Word has length 13 [2022-11-20 10:52:56,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:56,711 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 2047 transitions. [2022-11-20 10:52:56,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 10:52:56,711 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 2047 transitions. [2022-11-20 10:52:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:52:56,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:56,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:56,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:52:56,713 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:56,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:56,714 INFO L85 PathProgramCache]: Analyzing trace with hash 889684890, now seen corresponding path program 2 times [2022-11-20 10:52:56,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:56,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765966166] [2022-11-20 10:52:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:56,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:57,224 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 10:52:57,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:57,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765966166] [2022-11-20 10:52:57,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765966166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:57,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:57,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:52:57,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301967529] [2022-11-20 10:52:57,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:57,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:52:57,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:57,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:52:57,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:52:57,227 INFO L87 Difference]: Start difference. First operand 646 states and 2047 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 10:52:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:57,474 INFO L93 Difference]: Finished difference Result 754 states and 2353 transitions. [2022-11-20 10:52:57,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:52:57,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:52:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:57,478 INFO L225 Difference]: With dead ends: 754 [2022-11-20 10:52:57,478 INFO L226 Difference]: Without dead ends: 502 [2022-11-20 10:52:57,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:52:57,479 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 31 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:57,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 11 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:52:57,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-11-20 10:52:57,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2022-11-20 10:52:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 500 states have (on average 3.054) internal successors, (1527), 501 states have internal predecessors, (1527), 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 10:52:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1527 transitions. [2022-11-20 10:52:57,495 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1527 transitions. Word has length 13 [2022-11-20 10:52:57,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:57,496 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 1527 transitions. [2022-11-20 10:52:57,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 10:52:57,496 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1527 transitions. [2022-11-20 10:52:57,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:52:57,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:57,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:57,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:52:57,497 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:57,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:57,498 INFO L85 PathProgramCache]: Analyzing trace with hash -303880389, now seen corresponding path program 1 times [2022-11-20 10:52:57,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:57,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763893902] [2022-11-20 10:52:57,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:57,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:57,606 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 10:52:57,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:57,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763893902] [2022-11-20 10:52:57,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763893902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:57,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:57,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:52:57,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995946638] [2022-11-20 10:52:57,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:57,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:52:57,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:57,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:52:57,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:52:57,608 INFO L87 Difference]: Start difference. First operand 502 states and 1527 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 10:52:57,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:57,687 INFO L93 Difference]: Finished difference Result 624 states and 1772 transitions. [2022-11-20 10:52:57,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:52:57,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 10:52:57,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:57,690 INFO L225 Difference]: With dead ends: 624 [2022-11-20 10:52:57,690 INFO L226 Difference]: Without dead ends: 462 [2022-11-20 10:52:57,691 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 10:52:57,691 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:57,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 10 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:52:57,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-11-20 10:52:57,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2022-11-20 10:52:57,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 460 states have (on average 2.902173913043478) internal successors, (1335), 461 states have internal predecessors, (1335), 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 10:52:57,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1335 transitions. [2022-11-20 10:52:57,707 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1335 transitions. Word has length 14 [2022-11-20 10:52:57,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:57,707 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 1335 transitions. [2022-11-20 10:52:57,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 10:52:57,707 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1335 transitions. [2022-11-20 10:52:57,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 10:52:57,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:57,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:57,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:52:57,709 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:57,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:57,709 INFO L85 PathProgramCache]: Analyzing trace with hash 225245695, now seen corresponding path program 1 times [2022-11-20 10:52:57,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:57,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077593864] [2022-11-20 10:52:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:57,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:57,825 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 10:52:57,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:57,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077593864] [2022-11-20 10:52:57,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077593864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:57,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:57,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:52:57,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797431517] [2022-11-20 10:52:57,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:57,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:52:57,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:57,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:52:57,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:52:57,828 INFO L87 Difference]: Start difference. First operand 462 states and 1335 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:57,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:57,926 INFO L93 Difference]: Finished difference Result 504 states and 1336 transitions. [2022-11-20 10:52:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:52:57,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 10:52:57,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:57,929 INFO L225 Difference]: With dead ends: 504 [2022-11-20 10:52:57,929 INFO L226 Difference]: Without dead ends: 374 [2022-11-20 10:52:57,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:52:57,930 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 37 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:57,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 14 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:52:57,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-20 10:52:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-11-20 10:52:57,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 372 states have (on average 2.64247311827957) internal successors, (983), 373 states have internal predecessors, (983), 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 10:52:57,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 983 transitions. [2022-11-20 10:52:57,942 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 983 transitions. Word has length 15 [2022-11-20 10:52:57,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:57,942 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 983 transitions. [2022-11-20 10:52:57,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:57,942 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 983 transitions. [2022-11-20 10:52:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:52:57,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:57,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:57,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:52:57,944 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:57,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:57,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1644815287, now seen corresponding path program 1 times [2022-11-20 10:52:57,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:57,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066202410] [2022-11-20 10:52:57,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:57,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:58,092 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 10:52:58,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:58,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066202410] [2022-11-20 10:52:58,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066202410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:58,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:58,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:52:58,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134485143] [2022-11-20 10:52:58,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:58,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:52:58,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:58,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:52:58,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:52:58,094 INFO L87 Difference]: Start difference. First operand 374 states and 983 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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 10:52:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:58,205 INFO L93 Difference]: Finished difference Result 366 states and 908 transitions. [2022-11-20 10:52:58,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:52:58,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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 16 [2022-11-20 10:52:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:58,207 INFO L225 Difference]: With dead ends: 366 [2022-11-20 10:52:58,207 INFO L226 Difference]: Without dead ends: 300 [2022-11-20 10:52:58,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:52:58,208 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 56 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:58,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 16 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:52:58,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-20 10:52:58,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-11-20 10:52:58,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 298 states have (on average 2.5201342281879193) internal successors, (751), 299 states have internal predecessors, (751), 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 10:52:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 751 transitions. [2022-11-20 10:52:58,218 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 751 transitions. Word has length 16 [2022-11-20 10:52:58,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:58,218 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 751 transitions. [2022-11-20 10:52:58,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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 10:52:58,218 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 751 transitions. [2022-11-20 10:52:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 10:52:58,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:58,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:58,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:52:58,220 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:58,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:58,220 INFO L85 PathProgramCache]: Analyzing trace with hash -807762605, now seen corresponding path program 1 times [2022-11-20 10:52:58,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:58,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469073323] [2022-11-20 10:52:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:58,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:58,358 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 10:52:58,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:58,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469073323] [2022-11-20 10:52:58,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469073323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:58,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:58,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:52:58,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509668915] [2022-11-20 10:52:58,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:58,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:52:58,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:58,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:52:58,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:52:58,361 INFO L87 Difference]: Start difference. First operand 300 states and 751 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:58,484 INFO L93 Difference]: Finished difference Result 290 states and 721 transitions. [2022-11-20 10:52:58,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:52:58,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 10:52:58,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:58,486 INFO L225 Difference]: With dead ends: 290 [2022-11-20 10:52:58,487 INFO L226 Difference]: Without dead ends: 272 [2022-11-20 10:52:58,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:52:58,487 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 51 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:58,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 18 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:52:58,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-20 10:52:58,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2022-11-20 10:52:58,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 270 states have (on average 2.551851851851852) internal successors, (689), 271 states have internal predecessors, (689), 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 10:52:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 689 transitions. [2022-11-20 10:52:58,496 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 689 transitions. Word has length 18 [2022-11-20 10:52:58,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:58,497 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 689 transitions. [2022-11-20 10:52:58,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:58,497 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 689 transitions. [2022-11-20 10:52:58,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 10:52:58,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:58,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:58,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:52:58,499 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:58,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:58,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1087275306, now seen corresponding path program 1 times [2022-11-20 10:52:58,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:58,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654740478] [2022-11-20 10:52:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:58,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:58,605 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 10:52:58,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:58,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654740478] [2022-11-20 10:52:58,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654740478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:58,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:58,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:52:58,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352049540] [2022-11-20 10:52:58,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:58,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:52:58,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:58,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:52:58,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:52:58,607 INFO L87 Difference]: Start difference. First operand 272 states and 689 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:58,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:58,679 INFO L93 Difference]: Finished difference Result 395 states and 985 transitions. [2022-11-20 10:52:58,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:52:58,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 10:52:58,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:58,682 INFO L225 Difference]: With dead ends: 395 [2022-11-20 10:52:58,682 INFO L226 Difference]: Without dead ends: 395 [2022-11-20 10:52:58,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:52:58,683 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:58,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:52:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-11-20 10:52:58,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 256. [2022-11-20 10:52:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 254 states have (on average 2.5393700787401574) internal successors, (645), 255 states have internal predecessors, (645), 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 10:52:58,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 645 transitions. [2022-11-20 10:52:58,693 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 645 transitions. Word has length 20 [2022-11-20 10:52:58,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:58,693 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 645 transitions. [2022-11-20 10:52:58,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:58,693 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 645 transitions. [2022-11-20 10:52:58,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 10:52:58,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:58,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:58,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:52:58,695 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:58,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:58,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1087275312, now seen corresponding path program 1 times [2022-11-20 10:52:58,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:58,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386804580] [2022-11-20 10:52:58,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:58,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:59,253 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 10:52:59,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:59,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386804580] [2022-11-20 10:52:59,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386804580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:59,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:59,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:52:59,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706132821] [2022-11-20 10:52:59,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:59,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:52:59,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:59,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:52:59,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:52:59,255 INFO L87 Difference]: Start difference. First operand 256 states and 645 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:59,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:59,525 INFO L93 Difference]: Finished difference Result 490 states and 1257 transitions. [2022-11-20 10:52:59,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:52:59,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 10:52:59,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:59,527 INFO L225 Difference]: With dead ends: 490 [2022-11-20 10:52:59,527 INFO L226 Difference]: Without dead ends: 248 [2022-11-20 10:52:59,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:52:59,528 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:59,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 22 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:52:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-20 10:52:59,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-20 10:52:59,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 246 states have (on average 2.532520325203252) internal successors, (623), 247 states have internal predecessors, (623), 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 10:52:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 623 transitions. [2022-11-20 10:52:59,536 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 623 transitions. Word has length 20 [2022-11-20 10:52:59,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:59,537 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 623 transitions. [2022-11-20 10:52:59,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:59,537 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 623 transitions. [2022-11-20 10:52:59,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 10:52:59,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:59,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:59,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:52:59,538 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:52:59,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:59,539 INFO L85 PathProgramCache]: Analyzing trace with hash 935554286, now seen corresponding path program 2 times [2022-11-20 10:52:59,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:59,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882078399] [2022-11-20 10:52:59,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:59,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:00,095 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 10:53:00,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:00,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882078399] [2022-11-20 10:53:00,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882078399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:00,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:00,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:53:00,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366381988] [2022-11-20 10:53:00,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:00,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:53:00,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:00,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:53:00,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:53:00,097 INFO L87 Difference]: Start difference. First operand 248 states and 623 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:00,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:00,358 INFO L93 Difference]: Finished difference Result 442 states and 1121 transitions. [2022-11-20 10:53:00,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:53:00,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 10:53:00,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:00,360 INFO L225 Difference]: With dead ends: 442 [2022-11-20 10:53:00,360 INFO L226 Difference]: Without dead ends: 208 [2022-11-20 10:53:00,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:53:00,361 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:00,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 25 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:53:00,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-20 10:53:00,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-11-20 10:53:00,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 206 states have (on average 2.4320388349514563) internal successors, (501), 207 states have internal predecessors, (501), 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 10:53:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 501 transitions. [2022-11-20 10:53:00,369 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 501 transitions. Word has length 20 [2022-11-20 10:53:00,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:00,369 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 501 transitions. [2022-11-20 10:53:00,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:00,369 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 501 transitions. [2022-11-20 10:53:00,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 10:53:00,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:00,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:00,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:53:00,373 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:53:00,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:00,373 INFO L85 PathProgramCache]: Analyzing trace with hash -823291606, now seen corresponding path program 3 times [2022-11-20 10:53:00,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:00,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901999585] [2022-11-20 10:53:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:00,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:00,911 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 10:53:00,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:00,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901999585] [2022-11-20 10:53:00,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901999585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:00,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:00,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:53:00,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461680000] [2022-11-20 10:53:00,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:00,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:53:00,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:00,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:53:00,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:53:00,914 INFO L87 Difference]: Start difference. First operand 208 states and 501 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:01,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:01,142 INFO L93 Difference]: Finished difference Result 272 states and 660 transitions. [2022-11-20 10:53:01,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:53:01,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 10:53:01,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:01,143 INFO L225 Difference]: With dead ends: 272 [2022-11-20 10:53:01,143 INFO L226 Difference]: Without dead ends: 51 [2022-11-20 10:53:01,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:53:01,144 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 35 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:01,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 25 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:53:01,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-20 10:53:01,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-20 10:53:01,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.94) internal successors, (97), 50 states have internal predecessors, (97), 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 10:53:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2022-11-20 10:53:01,147 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 20 [2022-11-20 10:53:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:01,147 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2022-11-20 10:53:01,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2022-11-20 10:53:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 10:53:01,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:01,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:01,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:53:01,148 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 10:53:01,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash -822155120, now seen corresponding path program 2 times [2022-11-20 10:53:01,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:01,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194556783] [2022-11-20 10:53:01,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:01,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:01,253 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 10:53:01,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:01,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194556783] [2022-11-20 10:53:01,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194556783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:01,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:01,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:53:01,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132772803] [2022-11-20 10:53:01,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:01,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:53:01,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:01,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:53:01,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:53:01,255 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:01,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:01,295 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2022-11-20 10:53:01,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:53:01,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 10:53:01,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:01,295 INFO L225 Difference]: With dead ends: 50 [2022-11-20 10:53:01,296 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 10:53:01,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:53:01,297 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:01,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:53:01,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 10:53:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 10:53:01,302 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 10:53:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 10:53:01,302 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-11-20 10:53:01,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:01,303 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:53:01,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:01,303 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 10:53:01,303 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 10:53:01,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2022-11-20 10:53:01,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2022-11-20 10:53:01,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2022-11-20 10:53:01,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2022-11-20 10:53:01,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2022-11-20 10:53:01,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2022-11-20 10:53:01,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2022-11-20 10:53:01,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2022-11-20 10:53:01,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (5 of 14 remaining) [2022-11-20 10:53:01,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (4 of 14 remaining) [2022-11-20 10:53:01,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 14 remaining) [2022-11-20 10:53:01,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 14 remaining) [2022-11-20 10:53:01,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 14 remaining) [2022-11-20 10:53:01,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 14 remaining) [2022-11-20 10:53:01,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:53:01,316 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:01,318 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 10:53:01,319 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:53:01,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:53:01 BasicIcfg [2022-11-20 10:53:01,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:53:01,323 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:53:01,323 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:53:01,324 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:53:01,324 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:52:46" (3/4) ... [2022-11-20 10:53:01,327 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:53:01,333 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-20 10:53:01,333 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-20 10:53:01,334 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-20 10:53:01,334 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-11-20 10:53:01,341 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-20 10:53:01,341 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 10:53:01,341 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 10:53:01,341 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 10:53:01,387 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:53:01,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:53:01,388 INFO L158 Benchmark]: Toolchain (without parser) took 16241.91ms. Allocated memory was 172.0MB in the beginning and 348.1MB in the end (delta: 176.2MB). Free memory was 126.2MB in the beginning and 264.9MB in the end (delta: -138.7MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. [2022-11-20 10:53:01,388 INFO L158 Benchmark]: CDTParser took 0.76ms. Allocated memory is still 172.0MB. Free memory was 135.4MB in the beginning and 135.4MB in the end (delta: 16.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:53:01,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.68ms. Allocated memory is still 172.0MB. Free memory was 126.2MB in the beginning and 105.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 10:53:01,389 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.21ms. Allocated memory is still 172.0MB. Free memory was 105.6MB in the beginning and 103.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:53:01,393 INFO L158 Benchmark]: Boogie Preprocessor took 41.78ms. Allocated memory is still 172.0MB. Free memory was 103.6MB in the beginning and 102.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:53:01,393 INFO L158 Benchmark]: RCFGBuilder took 498.85ms. Allocated memory is still 172.0MB. Free memory was 102.0MB in the beginning and 86.4MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 10:53:01,394 INFO L158 Benchmark]: TraceAbstraction took 15085.35ms. Allocated memory was 172.0MB in the beginning and 348.1MB in the end (delta: 176.2MB). Free memory was 85.7MB in the beginning and 268.1MB in the end (delta: -182.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:53:01,394 INFO L158 Benchmark]: Witness Printer took 64.16ms. Allocated memory is still 348.1MB. Free memory was 268.1MB in the beginning and 264.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 10:53:01,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76ms. Allocated memory is still 172.0MB. Free memory was 135.4MB in the beginning and 135.4MB in the end (delta: 16.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.68ms. Allocated memory is still 172.0MB. Free memory was 126.2MB in the beginning and 105.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.21ms. Allocated memory is still 172.0MB. Free memory was 105.6MB in the beginning and 103.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.78ms. Allocated memory is still 172.0MB. Free memory was 103.6MB in the beginning and 102.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 498.85ms. Allocated memory is still 172.0MB. Free memory was 102.0MB in the beginning and 86.4MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15085.35ms. Allocated memory was 172.0MB in the beginning and 348.1MB in the end (delta: 176.2MB). Free memory was 85.7MB in the beginning and 268.1MB in the end (delta: -182.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 64.16ms. Allocated memory is still 348.1MB. Free memory was 268.1MB in the beginning and 264.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 130 PlacesBefore, 47 PlacesAfterwards, 119 TransitionsBefore, 34 TransitionsAfterwards, 2602 CoEnabledTransitionPairs, 7 FixpointIterations, 37 TrivialSequentialCompositions, 81 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 127 TotalNumberOfCompositions, 4905 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2963, independent: 2846, independent conditional: 0, independent unconditional: 2846, dependent: 117, dependent conditional: 0, dependent unconditional: 117, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1810, independent: 1765, independent conditional: 0, independent unconditional: 1765, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1810, independent: 1750, independent conditional: 0, independent unconditional: 1750, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 60, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 160, independent: 35, independent conditional: 0, independent unconditional: 35, dependent: 125, dependent conditional: 0, dependent unconditional: 125, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2963, independent: 1081, independent conditional: 0, independent unconditional: 1081, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 1810, unknown conditional: 0, unknown unconditional: 1810] , Statistics on independence cache: Total cache size (in pairs): 135, Positive cache size: 119, Positive conditional cache size: 0, Positive unconditional cache size: 119, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, 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: -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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 788]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 148 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 14.8s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 584 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 584 mSDsluCounter, 240 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 174 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2455 IncrementalHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 66 mSDtfsCounter, 2455 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=836occurred in iteration=0, InterpolantAutomatonStates: 117, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 879 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 281 NumberOfCodeBlocks, 281 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 4733 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 10:53:01,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b262172-86ff-4be7-8d35-b3d223401996/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