./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi000_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi000_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --- 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 20:46:46,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:46:46,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:46:46,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:46:46,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:46:46,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:46:46,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:46:46,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:46:46,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:46:46,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:46:46,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:46:46,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:46:46,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:46:46,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:46:46,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:46:46,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:46:46,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:46:46,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:46:46,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:46:46,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:46:46,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:46:46,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:46:46,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:46:46,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:46:46,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:46:46,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:46:46,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:46:46,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:46:46,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:46:46,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:46:46,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:46:46,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:46:46,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:46:46,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:46:46,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:46:46,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:46:46,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:46:46,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:46:46,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:46:46,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:46:46,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:46:46,133 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-20 20:46:46,166 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:46:46,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:46:46,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:46:46,167 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:46:46,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:46:46,168 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:46:46,168 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:46:46,168 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:46:46,169 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:46:46,169 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:46:46,169 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:46:46,169 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:46:46,169 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:46:46,170 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:46:46,170 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:46:46,170 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:46:46,170 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:46:46,171 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:46:46,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 20:46:46,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 20:46:46,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:46:46,172 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:46:46,172 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 20:46:46,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:46:46,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:46:46,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:46:46,173 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 20:46:46,173 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 20:46:46,173 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 20:46:46,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:46:46,174 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:46:46,174 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:46:46,174 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:46:46,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:46:46,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:46:46,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:46:46,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:46:46,175 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:46:46,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:46:46,176 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:46:46,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:46:46,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:46:46,176 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_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd [2022-11-20 20:46:46,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:46:46,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:46:46,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:46:46,499 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:46:46,499 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:46:46,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2022-11-20 20:46:49,586 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:46:49,856 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:46:49,857 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2022-11-20 20:46:49,871 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/data/1de7248bf/4db1c165b622484aa98c4d9795b80cb5/FLAGa9add8467 [2022-11-20 20:46:49,889 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/data/1de7248bf/4db1c165b622484aa98c4d9795b80cb5 [2022-11-20 20:46:49,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:46:49,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:46:49,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:46:49,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:46:49,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:46:49,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eaee8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49, skipping insertion in model container [2022-11-20 20:46:49,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:46:49,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:46:50,139 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_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/sv-benchmarks/c/pthread-wmm/rfi000_tso.i[944,957] [2022-11-20 20:46:50,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:46:50,407 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:46:50,425 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_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/sv-benchmarks/c/pthread-wmm/rfi000_tso.i[944,957] [2022-11-20 20:46:50,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:46:50,564 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:46:50,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:50 WrapperNode [2022-11-20 20:46:50,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:46:50,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:46:50,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:46:50,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:46:50,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:50" (1/1) ... [2022-11-20 20:46:50,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:50" (1/1) ... [2022-11-20 20:46:50,653 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 164 [2022-11-20 20:46:50,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:46:50,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:46:50,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:46:50,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:46:50,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:50" (1/1) ... [2022-11-20 20:46:50,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:50" (1/1) ... [2022-11-20 20:46:50,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:50" (1/1) ... [2022-11-20 20:46:50,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:50" (1/1) ... [2022-11-20 20:46:50,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:50" (1/1) ... [2022-11-20 20:46:50,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:50" (1/1) ... [2022-11-20 20:46:50,714 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:50" (1/1) ... [2022-11-20 20:46:50,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:50" (1/1) ... [2022-11-20 20:46:50,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:46:50,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:46:50,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:46:50,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:46:50,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:50" (1/1) ... [2022-11-20 20:46:50,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:46:50,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:46:50,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:46:50,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:46:50,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:46:50,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 20:46:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:46:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:46:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:46:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 20:46:50,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 20:46:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 20:46:50,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 20:46:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:46:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 20:46:50,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:46:50,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:46:50,812 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 20:46:50,942 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:46:50,945 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:46:51,467 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:46:51,701 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:46:51,701 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:46:51,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:46:51 BoogieIcfgContainer [2022-11-20 20:46:51,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:46:51,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:46:51,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:46:51,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:46:51,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:46:49" (1/3) ... [2022-11-20 20:46:51,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dfdb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:46:51, skipping insertion in model container [2022-11-20 20:46:51,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:50" (2/3) ... [2022-11-20 20:46:51,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dfdb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:46:51, skipping insertion in model container [2022-11-20 20:46:51,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:46:51" (3/3) ... [2022-11-20 20:46:51,725 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2022-11-20 20:46:51,745 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:46:51,745 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-20 20:46:51,745 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 20:46:51,810 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 20:46:51,858 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 20:46:51,876 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 105 transitions, 220 flow [2022-11-20 20:46:51,881 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 105 transitions, 220 flow [2022-11-20 20:46:51,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 105 transitions, 220 flow [2022-11-20 20:46:51,967 INFO L130 PetriNetUnfolder]: 2/103 cut-off events. [2022-11-20 20:46:51,968 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 20:46:51,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 103 events. 2/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2022-11-20 20:46:51,977 INFO L119 LiptonReduction]: Number of co-enabled transitions 1422 [2022-11-20 20:46:58,687 INFO L134 LiptonReduction]: Checked pairs total: 4074 [2022-11-20 20:46:58,688 INFO L136 LiptonReduction]: Total number of compositions: 105 [2022-11-20 20:46:58,696 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 62 flow [2022-11-20 20:46:58,728 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 239 states, 230 states have (on average 2.4869565217391303) internal successors, (572), 238 states have internal predecessors, (572), 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 20:46:58,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:46:58,752 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;@1c5bb3c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:46:58,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-20 20:46:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 230 states have (on average 2.4869565217391303) internal successors, (572), 238 states have internal predecessors, (572), 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 20:46:58,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 20:46:58,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:46:58,760 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 20:46:58,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:46:58,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:46:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash 527, now seen corresponding path program 1 times [2022-11-20 20:46:58,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:46:58,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516271127] [2022-11-20 20:46:58,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:46:58,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:46:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:46:58,885 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 20:46:58,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:46:58,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516271127] [2022-11-20 20:46:58,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516271127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:46:58,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:46:58,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 20:46:58,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926094265] [2022-11-20 20:46:58,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:46:58,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:46:58,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:46:58,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:46:58,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:46:58,917 INFO L87 Difference]: Start difference. First operand has 239 states, 230 states have (on average 2.4869565217391303) internal successors, (572), 238 states have internal predecessors, (572), 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 20:46:58,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:46:58,994 INFO L93 Difference]: Finished difference Result 227 states and 552 transitions. [2022-11-20 20:46:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:46:58,997 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 20:46:58,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:46:59,007 INFO L225 Difference]: With dead ends: 227 [2022-11-20 20:46:59,007 INFO L226 Difference]: Without dead ends: 227 [2022-11-20 20:46:59,008 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 20:46:59,011 INFO L413 NwaCegarLoop]: 1 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, 1 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:46:59,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:46:59,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-20 20:46:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-11-20 20:46:59,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 2.4864864864864864) internal successors, (552), 226 states have internal predecessors, (552), 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 20:46:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 552 transitions. [2022-11-20 20:46:59,093 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 552 transitions. Word has length 1 [2022-11-20 20:46:59,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:46:59,094 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 552 transitions. [2022-11-20 20:46:59,095 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 20:46:59,096 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 552 transitions. [2022-11-20 20:46:59,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 20:46:59,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:46:59,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 20:46:59,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:46:59,098 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:46:59,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:46:59,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1657922135, now seen corresponding path program 1 times [2022-11-20 20:46:59,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:46:59,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897016440] [2022-11-20 20:46:59,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:46:59,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:46:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:46:59,430 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 20:46:59,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:46:59,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897016440] [2022-11-20 20:46:59,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897016440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:46:59,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:46:59,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 20:46:59,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572435879] [2022-11-20 20:46:59,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:46:59,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:46:59,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:46:59,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:46:59,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:46:59,435 INFO L87 Difference]: Start difference. First operand 227 states and 552 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:46:59,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:46:59,519 INFO L93 Difference]: Finished difference Result 197 states and 473 transitions. [2022-11-20 20:46:59,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:46:59,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 20:46:59,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:46:59,537 INFO L225 Difference]: With dead ends: 197 [2022-11-20 20:46:59,537 INFO L226 Difference]: Without dead ends: 187 [2022-11-20 20:46:59,537 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 20:46:59,538 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:46:59,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:46:59,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-20 20:46:59,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-11-20 20:46:59,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 185 states have (on average 2.4324324324324325) internal successors, (450), 186 states have internal predecessors, (450), 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 20:46:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 450 transitions. [2022-11-20 20:46:59,548 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 450 transitions. Word has length 6 [2022-11-20 20:46:59,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:46:59,549 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 450 transitions. [2022-11-20 20:46:59,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:46:59,549 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 450 transitions. [2022-11-20 20:46:59,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 20:46:59,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:46:59,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:46:59,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:46:59,551 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:46:59,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:46:59,551 INFO L85 PathProgramCache]: Analyzing trace with hash 144047182, now seen corresponding path program 1 times [2022-11-20 20:46:59,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:46:59,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554803667] [2022-11-20 20:46:59,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:46:59,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:46:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:00,659 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 20:47:00,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:00,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554803667] [2022-11-20 20:47:00,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554803667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:00,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:00,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:47:00,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847502905] [2022-11-20 20:47:00,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:00,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:47:00,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:00,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:47:00,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:47:00,662 INFO L87 Difference]: Start difference. First operand 187 states and 450 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 20:47:00,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:00,829 INFO L93 Difference]: Finished difference Result 242 states and 561 transitions. [2022-11-20 20:47:00,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:47:00,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-20 20:47:00,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:00,832 INFO L225 Difference]: With dead ends: 242 [2022-11-20 20:47:00,833 INFO L226 Difference]: Without dead ends: 242 [2022-11-20 20:47:00,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:47:00,834 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:00,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:47:00,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-20 20:47:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 192. [2022-11-20 20:47:00,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 190 states have (on average 2.442105263157895) internal successors, (464), 191 states have internal predecessors, (464), 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 20:47:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 464 transitions. [2022-11-20 20:47:00,846 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 464 transitions. Word has length 7 [2022-11-20 20:47:00,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:00,847 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 464 transitions. [2022-11-20 20:47:00,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 20:47:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 464 transitions. [2022-11-20 20:47:00,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 20:47:00,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:00,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:00,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:47:00,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:47:00,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:00,849 INFO L85 PathProgramCache]: Analyzing trace with hash 144047189, now seen corresponding path program 1 times [2022-11-20 20:47:00,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:00,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957385490] [2022-11-20 20:47:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:00,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:01,128 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 20:47:01,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:01,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957385490] [2022-11-20 20:47:01,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957385490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:01,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:01,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:47:01,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000132991] [2022-11-20 20:47:01,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:01,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:47:01,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:01,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:47:01,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:47:01,131 INFO L87 Difference]: Start difference. First operand 192 states and 464 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 20:47:01,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:01,218 INFO L93 Difference]: Finished difference Result 157 states and 364 transitions. [2022-11-20 20:47:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:47:01,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-20 20:47:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:01,219 INFO L225 Difference]: With dead ends: 157 [2022-11-20 20:47:01,219 INFO L226 Difference]: Without dead ends: 157 [2022-11-20 20:47:01,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:47:01,221 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:01,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:47:01,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-20 20:47:01,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-11-20 20:47:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 2.3333333333333335) internal successors, (364), 156 states have internal predecessors, (364), 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 20:47:01,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 364 transitions. [2022-11-20 20:47:01,228 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 364 transitions. Word has length 7 [2022-11-20 20:47:01,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:01,228 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 364 transitions. [2022-11-20 20:47:01,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 20:47:01,229 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 364 transitions. [2022-11-20 20:47:01,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 20:47:01,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:01,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:01,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:47:01,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:47:01,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash 169770217, now seen corresponding path program 1 times [2022-11-20 20:47:01,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:01,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701895862] [2022-11-20 20:47:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:01,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:01,993 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 20:47:01,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:01,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701895862] [2022-11-20 20:47:01,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701895862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:01,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:01,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:47:01,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278216761] [2022-11-20 20:47:01,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:01,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:47:01,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:01,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:47:01,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:47:01,995 INFO L87 Difference]: Start difference. First operand 157 states and 364 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:47:02,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:02,104 INFO L93 Difference]: Finished difference Result 148 states and 335 transitions. [2022-11-20 20:47:02,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:47:02,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 20:47:02,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:02,106 INFO L225 Difference]: With dead ends: 148 [2022-11-20 20:47:02,106 INFO L226 Difference]: Without dead ends: 148 [2022-11-20 20:47:02,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:47:02,107 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 14 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:02,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:47:02,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-20 20:47:02,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 135. [2022-11-20 20:47:02,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 2.283582089552239) internal successors, (306), 134 states have internal predecessors, (306), 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 20:47:02,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 306 transitions. [2022-11-20 20:47:02,113 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 306 transitions. Word has length 8 [2022-11-20 20:47:02,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:02,113 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 306 transitions. [2022-11-20 20:47:02,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:47:02,113 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 306 transitions. [2022-11-20 20:47:02,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 20:47:02,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:02,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:02,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:47:02,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:47:02,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:02,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1849686649, now seen corresponding path program 1 times [2022-11-20 20:47:02,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:02,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817059994] [2022-11-20 20:47:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:02,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:03,106 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 20:47:03,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:03,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817059994] [2022-11-20 20:47:03,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817059994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:03,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:03,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:47:03,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032062479] [2022-11-20 20:47:03,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:03,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:47:03,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:47:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:47:03,110 INFO L87 Difference]: Start difference. First operand 135 states and 306 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 20:47:03,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:03,249 INFO L93 Difference]: Finished difference Result 132 states and 298 transitions. [2022-11-20 20:47:03,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:47:03,250 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 20:47:03,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:03,250 INFO L225 Difference]: With dead ends: 132 [2022-11-20 20:47:03,251 INFO L226 Difference]: Without dead ends: 132 [2022-11-20 20:47:03,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:47:03,252 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 7 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:03,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 6 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:47:03,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-20 20:47:03,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-11-20 20:47:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.2748091603053435) internal successors, (298), 131 states have internal predecessors, (298), 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 20:47:03,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 298 transitions. [2022-11-20 20:47:03,261 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 298 transitions. Word has length 11 [2022-11-20 20:47:03,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:03,262 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 298 transitions. [2022-11-20 20:47:03,262 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 20:47:03,262 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 298 transitions. [2022-11-20 20:47:03,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 20:47:03,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:03,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:03,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:47:03,267 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:47:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:03,267 INFO L85 PathProgramCache]: Analyzing trace with hash -803680660, now seen corresponding path program 1 times [2022-11-20 20:47:03,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:03,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139144497] [2022-11-20 20:47:03,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:03,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:03,522 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 20:47:03,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:03,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139144497] [2022-11-20 20:47:03,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139144497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:03,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:03,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:47:03,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062960414] [2022-11-20 20:47:03,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:03,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:47:03,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:03,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:47:03,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:47:03,525 INFO L87 Difference]: Start difference. First operand 132 states and 298 transitions. Second operand has 4 states, 4 states have (on average 3.0) 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 20:47:03,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:03,617 INFO L93 Difference]: Finished difference Result 111 states and 214 transitions. [2022-11-20 20:47:03,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:47:03,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) 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 20:47:03,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:03,618 INFO L225 Difference]: With dead ends: 111 [2022-11-20 20:47:03,619 INFO L226 Difference]: Without dead ends: 76 [2022-11-20 20:47:03,619 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 20:47:03,620 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 32 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:03,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:47:03,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-20 20:47:03,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-11-20 20:47:03,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.76) internal successors, (132), 75 states have internal predecessors, (132), 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 20:47:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 132 transitions. [2022-11-20 20:47:03,622 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 132 transitions. Word has length 12 [2022-11-20 20:47:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:03,623 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 132 transitions. [2022-11-20 20:47:03,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) 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 20:47:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 132 transitions. [2022-11-20 20:47:03,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 20:47:03,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:03,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:03,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:47:03,624 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:47:03,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:03,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1549644186, now seen corresponding path program 1 times [2022-11-20 20:47:03,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:03,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300241814] [2022-11-20 20:47:03,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:03,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:05,202 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 20:47:05,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:05,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300241814] [2022-11-20 20:47:05,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300241814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:05,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:05,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:47:05,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937719242] [2022-11-20 20:47:05,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:05,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:47:05,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:05,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:47:05,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:47:05,205 INFO L87 Difference]: Start difference. First operand 76 states and 132 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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 20:47:06,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:06,035 INFO L93 Difference]: Finished difference Result 126 states and 212 transitions. [2022-11-20 20:47:06,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:47:06,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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 20:47:06,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:06,037 INFO L225 Difference]: With dead ends: 126 [2022-11-20 20:47:06,037 INFO L226 Difference]: Without dead ends: 107 [2022-11-20 20:47:06,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:47:06,038 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 38 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:06,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 14 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:47:06,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-20 20:47:06,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2022-11-20 20:47:06,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.7142857142857142) internal successors, (168), 98 states have internal predecessors, (168), 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 20:47:06,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 168 transitions. [2022-11-20 20:47:06,041 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 168 transitions. Word has length 14 [2022-11-20 20:47:06,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:06,042 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 168 transitions. [2022-11-20 20:47:06,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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 20:47:06,042 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 168 transitions. [2022-11-20 20:47:06,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 20:47:06,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:06,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:06,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:47:06,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:47:06,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:06,044 INFO L85 PathProgramCache]: Analyzing trace with hash -782902692, now seen corresponding path program 2 times [2022-11-20 20:47:06,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:06,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937659009] [2022-11-20 20:47:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:06,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:06,319 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 20:47:06,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:06,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937659009] [2022-11-20 20:47:06,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937659009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:06,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:06,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:47:06,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507782782] [2022-11-20 20:47:06,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:06,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:47:06,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:06,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:47:06,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:47:06,321 INFO L87 Difference]: Start difference. First operand 99 states and 168 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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 20:47:06,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:06,401 INFO L93 Difference]: Finished difference Result 80 states and 128 transitions. [2022-11-20 20:47:06,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:47:06,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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 20:47:06,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:06,403 INFO L225 Difference]: With dead ends: 80 [2022-11-20 20:47:06,403 INFO L226 Difference]: Without dead ends: 44 [2022-11-20 20:47:06,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:47:06,404 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 48 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:06,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 2 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:47:06,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-20 20:47:06,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-20 20:47:06,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.558139534883721) internal successors, (67), 43 states have internal predecessors, (67), 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 20:47:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 67 transitions. [2022-11-20 20:47:06,406 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 67 transitions. Word has length 14 [2022-11-20 20:47:06,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:06,406 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 67 transitions. [2022-11-20 20:47:06,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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 20:47:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 67 transitions. [2022-11-20 20:47:06,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 20:47:06,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:06,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:06,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 20:47:06,407 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:47:06,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:06,408 INFO L85 PathProgramCache]: Analyzing trace with hash 682933460, now seen corresponding path program 1 times [2022-11-20 20:47:06,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:06,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660793927] [2022-11-20 20:47:06,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:06,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:08,301 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 20:47:08,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:08,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660793927] [2022-11-20 20:47:08,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660793927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:08,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:08,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:47:08,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373921262] [2022-11-20 20:47:08,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:08,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:47:08,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:08,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:47:08,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:47:08,304 INFO L87 Difference]: Start difference. First operand 44 states and 67 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:47:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:08,423 INFO L93 Difference]: Finished difference Result 54 states and 79 transitions. [2022-11-20 20:47:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:47:08,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 20:47:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:08,424 INFO L225 Difference]: With dead ends: 54 [2022-11-20 20:47:08,424 INFO L226 Difference]: Without dead ends: 44 [2022-11-20 20:47:08,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:47:08,425 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:08,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 8 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:47:08,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-20 20:47:08,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2022-11-20 20:47:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 41 states have internal predecessors, (63), 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 20:47:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 63 transitions. [2022-11-20 20:47:08,429 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 63 transitions. Word has length 17 [2022-11-20 20:47:08,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:08,429 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 63 transitions. [2022-11-20 20:47:08,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:47:08,430 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 63 transitions. [2022-11-20 20:47:08,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 20:47:08,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:08,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:08,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 20:47:08,431 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:47:08,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:08,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1575108166, now seen corresponding path program 2 times [2022-11-20 20:47:08,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:08,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445501308] [2022-11-20 20:47:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:08,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:10,580 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 20:47:10,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:10,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445501308] [2022-11-20 20:47:10,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445501308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:10,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:10,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:47:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43465377] [2022-11-20 20:47:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:10,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 20:47:10,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:10,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 20:47:10,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:47:10,582 INFO L87 Difference]: Start difference. First operand 42 states and 63 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:47:10,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:10,939 INFO L93 Difference]: Finished difference Result 56 states and 80 transitions. [2022-11-20 20:47:10,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:47:10,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 20:47:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:10,944 INFO L225 Difference]: With dead ends: 56 [2022-11-20 20:47:10,944 INFO L226 Difference]: Without dead ends: 34 [2022-11-20 20:47:10,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:47:10,945 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:10,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 10 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:47:10,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-20 20:47:10,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-20 20:47:10,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 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 20:47:10,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2022-11-20 20:47:10,947 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 17 [2022-11-20 20:47:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:10,948 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2022-11-20 20:47:10,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:47:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2022-11-20 20:47:10,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 20:47:10,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:10,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:10,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 20:47:10,949 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:47:10,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:10,950 INFO L85 PathProgramCache]: Analyzing trace with hash 435807192, now seen corresponding path program 3 times [2022-11-20 20:47:10,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:10,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688598010] [2022-11-20 20:47:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:11,695 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 20:47:11,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:11,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688598010] [2022-11-20 20:47:11,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688598010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:11,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:11,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:47:11,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752050890] [2022-11-20 20:47:11,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:11,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:47:11,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:11,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:47:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:47:11,697 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:47:11,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:11,763 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2022-11-20 20:47:11,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:47:11,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 20:47:11,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:11,765 INFO L225 Difference]: With dead ends: 33 [2022-11-20 20:47:11,765 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:47:11,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:47:11,765 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:11,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:47:11,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:47:11,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:47:11,766 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 20:47:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:47:11,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-11-20 20:47:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:11,767 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:47:11,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:47:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:47:11,767 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:47:11,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2022-11-20 20:47:11,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2022-11-20 20:47:11,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2022-11-20 20:47:11,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2022-11-20 20:47:11,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2022-11-20 20:47:11,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2022-11-20 20:47:11,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2022-11-20 20:47:11,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2022-11-20 20:47:11,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2022-11-20 20:47:11,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2022-11-20 20:47:11,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 20:47:11,775 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:11,780 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 20:47:11,780 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:47:11,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:47:11 BasicIcfg [2022-11-20 20:47:11,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:47:11,783 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:47:11,783 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:47:11,784 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:47:11,784 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:46:51" (3/4) ... [2022-11-20 20:47:11,787 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:47:11,792 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-20 20:47:11,792 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-20 20:47:11,797 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2022-11-20 20:47:11,797 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-20 20:47:11,797 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 20:47:11,797 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:47:11,831 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:47:11,831 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:47:11,832 INFO L158 Benchmark]: Toolchain (without parser) took 21930.79ms. Allocated memory was 159.4MB in the beginning and 450.9MB in the end (delta: 291.5MB). Free memory was 112.1MB in the beginning and 393.5MB in the end (delta: -281.4MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2022-11-20 20:47:11,832 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 159.4MB. Free memory is still 101.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:47:11,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 661.00ms. Allocated memory is still 159.4MB. Free memory was 111.6MB in the beginning and 86.5MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-20 20:47:11,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.09ms. Allocated memory is still 159.4MB. Free memory was 86.5MB in the beginning and 83.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 20:47:11,833 INFO L158 Benchmark]: Boogie Preprocessor took 73.36ms. Allocated memory is still 159.4MB. Free memory was 83.2MB in the beginning and 81.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:47:11,834 INFO L158 Benchmark]: RCFGBuilder took 980.78ms. Allocated memory was 159.4MB in the beginning and 201.3MB in the end (delta: 41.9MB). Free memory was 81.1MB in the beginning and 144.2MB in the end (delta: -63.1MB). Peak memory consumption was 35.4MB. Max. memory is 16.1GB. [2022-11-20 20:47:11,834 INFO L158 Benchmark]: TraceAbstraction took 20068.43ms. Allocated memory was 201.3MB in the beginning and 450.9MB in the end (delta: 249.6MB). Free memory was 144.2MB in the beginning and 396.6MB in the end (delta: -252.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:47:11,834 INFO L158 Benchmark]: Witness Printer took 48.05ms. Allocated memory is still 450.9MB. Free memory was 396.6MB in the beginning and 393.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:47:11,836 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 159.4MB. Free memory is still 101.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 661.00ms. Allocated memory is still 159.4MB. Free memory was 111.6MB in the beginning and 86.5MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.09ms. Allocated memory is still 159.4MB. Free memory was 86.5MB in the beginning and 83.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.36ms. Allocated memory is still 159.4MB. Free memory was 83.2MB in the beginning and 81.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 980.78ms. Allocated memory was 159.4MB in the beginning and 201.3MB in the end (delta: 41.9MB). Free memory was 81.1MB in the beginning and 144.2MB in the end (delta: -63.1MB). Peak memory consumption was 35.4MB. Max. memory is 16.1GB. * TraceAbstraction took 20068.43ms. Allocated memory was 201.3MB in the beginning and 450.9MB in the end (delta: 249.6MB). Free memory was 144.2MB in the beginning and 396.6MB in the end (delta: -252.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 48.05ms. Allocated memory is still 450.9MB. Free memory was 396.6MB in the beginning and 393.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.8s, 110 PlacesBefore, 33 PlacesAfterwards, 105 TransitionsBefore, 26 TransitionsAfterwards, 1422 CoEnabledTransitionPairs, 6 FixpointIterations, 47 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 105 TotalNumberOfCompositions, 4074 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1937, independent: 1782, independent conditional: 0, independent unconditional: 1782, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1061, independent: 1002, independent conditional: 0, independent unconditional: 1002, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1061, independent: 998, independent conditional: 0, independent unconditional: 998, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 63, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 727, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 718, dependent conditional: 0, dependent unconditional: 718, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1937, independent: 780, independent conditional: 0, independent unconditional: 780, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 1061, unknown conditional: 0, unknown unconditional: 1061] , Statistics on independence cache: Total cache size (in pairs): 68, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 824]: 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 5 procedures, 125 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 19.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 210 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 768 IncrementalHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 17 mSDtfsCounter, 768 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=0, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 73 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 2185 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 20:47:11,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6635bf43-5cbe-4fff-8d2c-2c63d35626d6/bin/utaipan-6cKwYrpEi9/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