./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/14_spin2003.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/14_spin2003.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f5ed9d077a05ec08544f0d3c902eb6b5aa6ad768c4ec69a1caaef2b54748a07e --- 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-e04fb08 [2022-11-16 11:32:53,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:32:53,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:32:53,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:32:53,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:32:53,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:32:53,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:32:53,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:32:53,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:32:53,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:32:53,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:32:53,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:32:53,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:32:53,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:32:53,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:32:53,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:32:53,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:32:53,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:32:53,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:32:53,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:32:53,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:32:53,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:32:53,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:32:53,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:32:53,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:32:53,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:32:53,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:32:53,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:32:53,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:32:53,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:32:53,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:32:53,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:32:53,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:32:53,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:32:53,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:32:53,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:32:53,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:32:53,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:32:53,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:32:53,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:32:53,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:32:53,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:32:53,374 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:32:53,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:32:53,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:32:53,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:32:53,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:32:53,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:32:53,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:32:53,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:32:53,378 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:32:53,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:32:53,379 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:32:53,380 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:32:53,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:32:53,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:32:53,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:32:53,381 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:32:53,381 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:32:53,381 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:32:53,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:32:53,381 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:32:53,382 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:32:53,382 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:32:53,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:32:53,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:32:53,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:32:53,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:32:53,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:32:53,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:32:53,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:32:53,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:32:53,385 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_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5ed9d077a05ec08544f0d3c902eb6b5aa6ad768c4ec69a1caaef2b54748a07e [2022-11-16 11:32:53,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:32:53,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:32:53,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:32:53,663 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:32:53,664 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:32:53,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-ext/14_spin2003.i [2022-11-16 11:32:53,736 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/data/28819eba0/34914bd2437f47188de4f1f25e9c34a7/FLAGd67ec20e2 [2022-11-16 11:32:54,254 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:32:54,255 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/sv-benchmarks/c/pthread-ext/14_spin2003.i [2022-11-16 11:32:54,268 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/data/28819eba0/34914bd2437f47188de4f1f25e9c34a7/FLAGd67ec20e2 [2022-11-16 11:32:54,571 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/data/28819eba0/34914bd2437f47188de4f1f25e9c34a7 [2022-11-16 11:32:54,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:32:54,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:32:54,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:32:54,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:32:54,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:32:54,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:32:54" (1/1) ... [2022-11-16 11:32:54,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d4424e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:54, skipping insertion in model container [2022-11-16 11:32:54,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:32:54" (1/1) ... [2022-11-16 11:32:54,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:32:54,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:32:54,943 WARN L229 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_fecb1828-60d3-4a48-8848-654af1a77bbd/sv-benchmarks/c/pthread-ext/14_spin2003.i[30203,30216] [2022-11-16 11:32:54,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:32:54,957 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:32:54,990 WARN L229 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_fecb1828-60d3-4a48-8848-654af1a77bbd/sv-benchmarks/c/pthread-ext/14_spin2003.i[30203,30216] [2022-11-16 11:32:54,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:32:55,022 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:32:55,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:55 WrapperNode [2022-11-16 11:32:55,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:32:55,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:32:55,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:32:55,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:32:55,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:55" (1/1) ... [2022-11-16 11:32:55,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:55" (1/1) ... [2022-11-16 11:32:55,061 INFO L138 Inliner]: procedures = 169, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 47 [2022-11-16 11:32:55,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:32:55,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:32:55,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:32:55,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:32:55,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:55" (1/1) ... [2022-11-16 11:32:55,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:55" (1/1) ... [2022-11-16 11:32:55,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:55" (1/1) ... [2022-11-16 11:32:55,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:55" (1/1) ... [2022-11-16 11:32:55,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:55" (1/1) ... [2022-11-16 11:32:55,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:55" (1/1) ... [2022-11-16 11:32:55,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:55" (1/1) ... [2022-11-16 11:32:55,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:55" (1/1) ... [2022-11-16 11:32:55,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:32:55,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:32:55,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:32:55,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:32:55,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:55" (1/1) ... [2022-11-16 11:32:55,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:32:55,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:32:55,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:32:55,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:32:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-16 11:32:55,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-16 11:32:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:32:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:32:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:32:55,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:32:55,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:32:55,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:32:55,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:32:55,177 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:32:55,291 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:32:55,293 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:32:55,424 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:32:55,469 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:32:55,469 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:32:55,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:32:55 BoogieIcfgContainer [2022-11-16 11:32:55,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:32:55,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:32:55,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:32:55,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:32:55,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:32:54" (1/3) ... [2022-11-16 11:32:55,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26adbfcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:32:55, skipping insertion in model container [2022-11-16 11:32:55,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:55" (2/3) ... [2022-11-16 11:32:55,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26adbfcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:32:55, skipping insertion in model container [2022-11-16 11:32:55,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:32:55" (3/3) ... [2022-11-16 11:32:55,481 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003.i [2022-11-16 11:32:55,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:32:55,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-16 11:32:55,501 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:32:55,546 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:32:55,628 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:32:55,646 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 48 transitions, 101 flow [2022-11-16 11:32:55,656 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 48 transitions, 101 flow [2022-11-16 11:32:55,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 48 transitions, 101 flow [2022-11-16 11:32:55,722 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-11-16 11:32:55,722 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:32:55,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 3/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 112 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 32. Up to 4 conditions per place. [2022-11-16 11:32:55,728 INFO L119 LiptonReduction]: Number of co-enabled transitions 456 [2022-11-16 11:32:57,458 INFO L134 LiptonReduction]: Checked pairs total: 441 [2022-11-16 11:32:57,458 INFO L136 LiptonReduction]: Total number of compositions: 51 [2022-11-16 11:32:57,467 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 11 transitions, 27 flow [2022-11-16 11:32:57,479 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 29 states, 17 states have (on average 2.411764705882353) internal successors, (41), 28 states have internal predecessors, (41), 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) [2022-11-16 11:32:57,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:32:57,503 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;@18afd592, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:32:57,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-16 11:32:57,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 2.411764705882353) internal successors, (41), 28 states have internal predecessors, (41), 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) [2022-11-16 11:32:57,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:32:57,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:57,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:32:57,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-11-16 11:32:57,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:57,517 INFO L85 PathProgramCache]: Analyzing trace with hash 8113, now seen corresponding path program 1 times [2022-11-16 11:32:57,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:57,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630272380] [2022-11-16 11:32:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:57,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:57,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:57,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630272380] [2022-11-16 11:32:57,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630272380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:57,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:57,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:32:57,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169631989] [2022-11-16 11:32:57,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:57,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:32:57,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:57,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:32:57,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:57,843 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 2.411764705882353) internal successors, (41), 28 states have internal predecessors, (41), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:57,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:57,873 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2022-11-16 11:32:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:32:57,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:32:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:57,883 INFO L225 Difference]: With dead ends: 14 [2022-11-16 11:32:57,883 INFO L226 Difference]: Without dead ends: 14 [2022-11-16 11:32:57,884 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 [2022-11-16 11:32:57,889 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:57,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:32:57,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-16 11:32:57,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-16 11:32:57,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 13 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) [2022-11-16 11:32:57,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-11-16 11:32:57,922 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 2 [2022-11-16 11:32:57,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:57,923 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-11-16 11:32:57,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-11-16 11:32:57,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:32:57,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:57,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:32:57,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:32:57,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-11-16 11:32:57,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash 8114, now seen corresponding path program 1 times [2022-11-16 11:32:57,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:57,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466820052] [2022-11-16 11:32:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:57,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:58,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:58,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:58,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466820052] [2022-11-16 11:32:58,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466820052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:58,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:58,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:32:58,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121179362] [2022-11-16 11:32:58,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:58,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:32:58,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:58,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:32:58,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:58,099 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:58,107 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-11-16 11:32:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:32:58,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:32:58,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:58,108 INFO L225 Difference]: With dead ends: 11 [2022-11-16 11:32:58,109 INFO L226 Difference]: Without dead ends: 11 [2022-11-16 11:32:58,110 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 [2022-11-16 11:32:58,111 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:58,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:32:58,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-16 11:32:58,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-16 11:32:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-11-16 11:32:58,119 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 2 [2022-11-16 11:32:58,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:58,120 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-11-16 11:32:58,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:58,120 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-11-16 11:32:58,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:32:58,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:58,122 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-16 11:32:58,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:32:58,122 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-11-16 11:32:58,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:58,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1090221445, now seen corresponding path program 1 times [2022-11-16 11:32:58,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:58,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431528807] [2022-11-16 11:32:58,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:58,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:32:58,155 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:32:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:32:58,200 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:32:58,200 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:32:58,201 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-16 11:32:58,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2022-11-16 11:32:58,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2022-11-16 11:32:58,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2022-11-16 11:32:58,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 6 remaining) [2022-11-16 11:32:58,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2022-11-16 11:32:58,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:32:58,206 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 11:32:58,208 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:32:58,208 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:32:58,222 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:32:58,228 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:32:58,232 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 61 transitions, 134 flow [2022-11-16 11:32:58,232 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 61 transitions, 134 flow [2022-11-16 11:32:58,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 61 transitions, 134 flow [2022-11-16 11:32:58,262 INFO L130 PetriNetUnfolder]: 5/95 cut-off events. [2022-11-16 11:32:58,262 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:32:58,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 95 events. 5/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 207 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 65. Up to 6 conditions per place. [2022-11-16 11:32:58,267 INFO L119 LiptonReduction]: Number of co-enabled transitions 1224 [2022-11-16 11:32:59,690 INFO L134 LiptonReduction]: Checked pairs total: 3409 [2022-11-16 11:32:59,691 INFO L136 LiptonReduction]: Total number of compositions: 51 [2022-11-16 11:32:59,691 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 24 transitions, 60 flow [2022-11-16 11:32:59,752 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 497 states, 468 states have (on average 2.784188034188034) internal successors, (1303), 496 states have internal predecessors, (1303), 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) [2022-11-16 11:32:59,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:32:59,760 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;@18afd592, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:32:59,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 11:32:59,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 497 states, 468 states have (on average 2.784188034188034) internal successors, (1303), 496 states have internal predecessors, (1303), 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) [2022-11-16 11:32:59,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:32:59,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:59,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:32:59,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:32:59,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:59,768 INFO L85 PathProgramCache]: Analyzing trace with hash 12085, now seen corresponding path program 1 times [2022-11-16 11:32:59,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:59,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677336644] [2022-11-16 11:32:59,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:59,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:59,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:59,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677336644] [2022-11-16 11:32:59,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677336644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:59,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:59,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:32:59,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731765913] [2022-11-16 11:32:59,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:59,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:32:59,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:59,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:32:59,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:59,829 INFO L87 Difference]: Start difference. First operand has 497 states, 468 states have (on average 2.784188034188034) internal successors, (1303), 496 states have internal predecessors, (1303), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:59,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:59,867 INFO L93 Difference]: Finished difference Result 333 states and 818 transitions. [2022-11-16 11:32:59,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:32:59,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:32:59,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:59,872 INFO L225 Difference]: With dead ends: 333 [2022-11-16 11:32:59,873 INFO L226 Difference]: Without dead ends: 333 [2022-11-16 11:32:59,873 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 [2022-11-16 11:32:59,874 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:59,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 8 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:32:59,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-16 11:32:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-11-16 11:32:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 322 states have (on average 2.540372670807453) internal successors, (818), 332 states have internal predecessors, (818), 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) [2022-11-16 11:32:59,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 818 transitions. [2022-11-16 11:32:59,904 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 818 transitions. Word has length 2 [2022-11-16 11:32:59,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:59,905 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 818 transitions. [2022-11-16 11:32:59,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 818 transitions. [2022-11-16 11:32:59,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:32:59,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:59,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:32:59,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:32:59,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:32:59,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:59,907 INFO L85 PathProgramCache]: Analyzing trace with hash 12084, now seen corresponding path program 1 times [2022-11-16 11:32:59,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:59,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534062491] [2022-11-16 11:32:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:59,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:59,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:59,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534062491] [2022-11-16 11:32:59,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534062491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:59,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:59,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:32:59,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115563435] [2022-11-16 11:32:59,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:59,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:32:59,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:59,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:32:59,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:59,952 INFO L87 Difference]: Start difference. First operand 333 states and 818 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:59,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:59,969 INFO L93 Difference]: Finished difference Result 276 states and 671 transitions. [2022-11-16 11:32:59,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:32:59,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:32:59,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:59,971 INFO L225 Difference]: With dead ends: 276 [2022-11-16 11:32:59,972 INFO L226 Difference]: Without dead ends: 276 [2022-11-16 11:32:59,972 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 [2022-11-16 11:32:59,973 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:59,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 8 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:32:59,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-16 11:32:59,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2022-11-16 11:32:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 2.4669117647058822) internal successors, (671), 275 states have internal predecessors, (671), 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) [2022-11-16 11:32:59,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 671 transitions. [2022-11-16 11:32:59,990 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 671 transitions. Word has length 2 [2022-11-16 11:32:59,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:59,991 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 671 transitions. [2022-11-16 11:32:59,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:59,991 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 671 transitions. [2022-11-16 11:32:59,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:32:59,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:59,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:32:59,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:32:59,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:32:59,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:59,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1682663391, now seen corresponding path program 1 times [2022-11-16 11:32:59,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:59,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433434977] [2022-11-16 11:32:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:59,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:00,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:00,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:00,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433434977] [2022-11-16 11:33:00,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433434977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:00,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:00,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:33:00,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542034557] [2022-11-16 11:33:00,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:00,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:00,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:00,068 INFO L87 Difference]: Start difference. First operand 276 states and 671 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2022-11-16 11:33:00,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:00,107 INFO L93 Difference]: Finished difference Result 277 states and 637 transitions. [2022-11-16 11:33:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:00,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2022-11-16 11:33:00,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:00,111 INFO L225 Difference]: With dead ends: 277 [2022-11-16 11:33:00,111 INFO L226 Difference]: Without dead ends: 277 [2022-11-16 11:33:00,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:00,112 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:00,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:00,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-16 11:33:00,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 257. [2022-11-16 11:33:00,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 254 states have (on average 2.326771653543307) internal successors, (591), 256 states have internal predecessors, (591), 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) [2022-11-16 11:33:00,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 591 transitions. [2022-11-16 11:33:00,127 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 591 transitions. Word has length 7 [2022-11-16 11:33:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:00,127 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 591 transitions. [2022-11-16 11:33:00,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2022-11-16 11:33:00,128 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 591 transitions. [2022-11-16 11:33:00,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:33:00,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:00,129 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 11:33:00,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:33:00,129 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:33:00,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:00,130 INFO L85 PathProgramCache]: Analyzing trace with hash -869587704, now seen corresponding path program 1 times [2022-11-16 11:33:00,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:00,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366476542] [2022-11-16 11:33:00,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:00,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:33:00,142 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:33:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:33:00,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:33:00,152 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:33:00,152 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-16 11:33:00,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2022-11-16 11:33:00,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2022-11-16 11:33:00,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2022-11-16 11:33:00,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2022-11-16 11:33:00,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2022-11-16 11:33:00,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2022-11-16 11:33:00,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:33:00,154 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-16 11:33:00,154 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:33:00,155 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:33:00,169 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:33:00,171 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:33:00,171 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 74 transitions, 169 flow [2022-11-16 11:33:00,172 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 74 transitions, 169 flow [2022-11-16 11:33:00,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 74 transitions, 169 flow [2022-11-16 11:33:00,194 INFO L130 PetriNetUnfolder]: 7/126 cut-off events. [2022-11-16 11:33:00,196 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 11:33:00,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 126 events. 7/126 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 297 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 99. Up to 8 conditions per place. [2022-11-16 11:33:00,200 INFO L119 LiptonReduction]: Number of co-enabled transitions 2304 [2022-11-16 11:33:01,747 INFO L134 LiptonReduction]: Checked pairs total: 7726 [2022-11-16 11:33:01,747 INFO L136 LiptonReduction]: Total number of compositions: 66 [2022-11-16 11:33:01,748 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 87 flow [2022-11-16 11:33:01,888 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3527 states, 3463 states have (on average 3.8215420155934163) internal successors, (13234), 3526 states have internal predecessors, (13234), 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) [2022-11-16 11:33:01,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:33:01,890 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;@18afd592, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:33:01,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 11:33:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 3527 states, 3463 states have (on average 3.8215420155934163) internal successors, (13234), 3526 states have internal predecessors, (13234), 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) [2022-11-16 11:33:01,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:33:01,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:01,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:33:01,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-16 11:33:01,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:01,904 INFO L85 PathProgramCache]: Analyzing trace with hash 16979, now seen corresponding path program 1 times [2022-11-16 11:33:01,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:01,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726700398] [2022-11-16 11:33:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:01,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:01,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:01,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726700398] [2022-11-16 11:33:01,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726700398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:01,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:01,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:01,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841756048] [2022-11-16 11:33:01,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:01,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:33:01,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:33:01,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:33:01,928 INFO L87 Difference]: Start difference. First operand has 3527 states, 3463 states have (on average 3.8215420155934163) internal successors, (13234), 3526 states have internal predecessors, (13234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:01,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:01,974 INFO L93 Difference]: Finished difference Result 2742 states and 9113 transitions. [2022-11-16 11:33:01,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:33:01,975 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:33:01,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:01,999 INFO L225 Difference]: With dead ends: 2742 [2022-11-16 11:33:02,000 INFO L226 Difference]: Without dead ends: 2742 [2022-11-16 11:33:02,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:33:02,004 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:02,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:02,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2022-11-16 11:33:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 2742. [2022-11-16 11:33:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2742 states, 2704 states have (on average 3.3701923076923075) internal successors, (9113), 2741 states have internal predecessors, (9113), 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) [2022-11-16 11:33:02,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 9113 transitions. [2022-11-16 11:33:02,211 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 9113 transitions. Word has length 2 [2022-11-16 11:33:02,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:02,211 INFO L495 AbstractCegarLoop]: Abstraction has 2742 states and 9113 transitions. [2022-11-16 11:33:02,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 9113 transitions. [2022-11-16 11:33:02,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:33:02,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:02,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:33:02,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:33:02,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-16 11:33:02,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:02,214 INFO L85 PathProgramCache]: Analyzing trace with hash 16970, now seen corresponding path program 1 times [2022-11-16 11:33:02,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:02,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356117138] [2022-11-16 11:33:02,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:02,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:02,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:02,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356117138] [2022-11-16 11:33:02,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356117138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:02,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:02,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:02,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618903850] [2022-11-16 11:33:02,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:02,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:02,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:02,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:02,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:02,271 INFO L87 Difference]: Start difference. First operand 2742 states and 9113 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:02,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:02,317 INFO L93 Difference]: Finished difference Result 2342 states and 7741 transitions. [2022-11-16 11:33:02,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:02,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:33:02,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:02,333 INFO L225 Difference]: With dead ends: 2342 [2022-11-16 11:33:02,333 INFO L226 Difference]: Without dead ends: 2342 [2022-11-16 11:33:02,334 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 [2022-11-16 11:33:02,336 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:02,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 12 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:02,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2022-11-16 11:33:02,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2342. [2022-11-16 11:33:02,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 2319 states have (on average 3.338076757222941) internal successors, (7741), 2341 states have internal predecessors, (7741), 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) [2022-11-16 11:33:02,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 7741 transitions. [2022-11-16 11:33:02,437 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 7741 transitions. Word has length 2 [2022-11-16 11:33:02,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:02,438 INFO L495 AbstractCegarLoop]: Abstraction has 2342 states and 7741 transitions. [2022-11-16 11:33:02,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:02,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 7741 transitions. [2022-11-16 11:33:02,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:33:02,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:02,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:33:02,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:33:02,443 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-16 11:33:02,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:02,444 INFO L85 PathProgramCache]: Analyzing trace with hash 16971, now seen corresponding path program 1 times [2022-11-16 11:33:02,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:02,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844043358] [2022-11-16 11:33:02,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:02,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:02,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:02,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844043358] [2022-11-16 11:33:02,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844043358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:02,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:02,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:02,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831660681] [2022-11-16 11:33:02,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:02,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:02,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:02,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:02,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:02,502 INFO L87 Difference]: Start difference. First operand 2342 states and 7741 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:02,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:02,573 INFO L93 Difference]: Finished difference Result 1942 states and 6369 transitions. [2022-11-16 11:33:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:02,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:33:02,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:02,596 INFO L225 Difference]: With dead ends: 1942 [2022-11-16 11:33:02,596 INFO L226 Difference]: Without dead ends: 1942 [2022-11-16 11:33:02,597 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 [2022-11-16 11:33:02,597 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:02,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:02,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2022-11-16 11:33:02,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1942. [2022-11-16 11:33:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1934 states have (on average 3.2931747673216134) internal successors, (6369), 1941 states have internal predecessors, (6369), 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) [2022-11-16 11:33:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 6369 transitions. [2022-11-16 11:33:02,664 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 6369 transitions. Word has length 2 [2022-11-16 11:33:02,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:02,665 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 6369 transitions. [2022-11-16 11:33:02,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 6369 transitions. [2022-11-16 11:33:02,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:33:02,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:02,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:02,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:33:02,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-16 11:33:02,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:02,667 INFO L85 PathProgramCache]: Analyzing trace with hash 891827987, now seen corresponding path program 1 times [2022-11-16 11:33:02,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:02,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755209636] [2022-11-16 11:33:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:02,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:02,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:02,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755209636] [2022-11-16 11:33:02,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755209636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:02,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:02,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:33:02,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281263344] [2022-11-16 11:33:02,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:02,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:02,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:02,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:02,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:02,706 INFO L87 Difference]: Start difference. First operand 1942 states and 6369 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2022-11-16 11:33:02,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:02,773 INFO L93 Difference]: Finished difference Result 2297 states and 7000 transitions. [2022-11-16 11:33:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:02,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2022-11-16 11:33:02,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:02,788 INFO L225 Difference]: With dead ends: 2297 [2022-11-16 11:33:02,788 INFO L226 Difference]: Without dead ends: 2297 [2022-11-16 11:33:02,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:02,790 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:02,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 15 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:02,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2022-11-16 11:33:02,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2011. [2022-11-16 11:33:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 2004 states have (on average 3.0733532934131738) internal successors, (6159), 2010 states have internal predecessors, (6159), 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) [2022-11-16 11:33:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 6159 transitions. [2022-11-16 11:33:02,858 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 6159 transitions. Word has length 7 [2022-11-16 11:33:02,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:02,858 INFO L495 AbstractCegarLoop]: Abstraction has 2011 states and 6159 transitions. [2022-11-16 11:33:02,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2022-11-16 11:33:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 6159 transitions. [2022-11-16 11:33:02,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:33:02,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:02,861 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:02,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:33:02,862 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-16 11:33:02,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:02,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1531568954, now seen corresponding path program 1 times [2022-11-16 11:33:02,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:02,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787316574] [2022-11-16 11:33:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:02,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:03,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:03,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:03,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787316574] [2022-11-16 11:33:03,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787316574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:33:03,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952469954] [2022-11-16 11:33:03,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:03,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:03,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:03,098 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:03,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:33:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:03,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:33:03,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:03,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:03,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952469954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:03,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:33:03,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-16 11:33:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112855392] [2022-11-16 11:33:03,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:03,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:03,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:03,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:03,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:33:03,246 INFO L87 Difference]: Start difference. First operand 2011 states and 6159 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:03,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:03,272 INFO L93 Difference]: Finished difference Result 387 states and 731 transitions. [2022-11-16 11:33:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:03,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 11:33:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:03,274 INFO L225 Difference]: With dead ends: 387 [2022-11-16 11:33:03,275 INFO L226 Difference]: Without dead ends: 387 [2022-11-16 11:33:03,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:33:03,276 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:03,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:03,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-16 11:33:03,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2022-11-16 11:33:03,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.8937823834196892) internal successors, (731), 386 states have internal predecessors, (731), 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) [2022-11-16 11:33:03,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 731 transitions. [2022-11-16 11:33:03,286 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 731 transitions. Word has length 13 [2022-11-16 11:33:03,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:03,287 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 731 transitions. [2022-11-16 11:33:03,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:03,287 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 731 transitions. [2022-11-16 11:33:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:33:03,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:03,288 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-16 11:33:03,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:03,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb1828-60d3-4a48-8848-654af1a77bbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:33:03,494 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-16 11:33:03,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:03,495 INFO L85 PathProgramCache]: Analyzing trace with hash 410441860, now seen corresponding path program 1 times [2022-11-16 11:33:03,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:03,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055784885] [2022-11-16 11:33:03,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:03,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:33:03,513 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:33:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:33:03,532 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:33:03,532 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:33:03,533 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-11-16 11:33:03,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2022-11-16 11:33:03,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2022-11-16 11:33:03,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2022-11-16 11:33:03,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2022-11-16 11:33:03,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2022-11-16 11:33:03,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2022-11-16 11:33:03,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2022-11-16 11:33:03,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:33:03,539 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-16 11:33:03,539 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:33:03,540 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 11:33:03,558 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:33:03,560 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:33:03,560 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 87 transitions, 206 flow [2022-11-16 11:33:03,560 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 87 transitions, 206 flow [2022-11-16 11:33:03,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 87 transitions, 206 flow [2022-11-16 11:33:03,583 INFO L130 PetriNetUnfolder]: 9/157 cut-off events. [2022-11-16 11:33:03,584 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-16 11:33:03,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 157 events. 9/157 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 391 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 134. Up to 10 conditions per place. [2022-11-16 11:33:03,588 INFO L119 LiptonReduction]: Number of co-enabled transitions 3696 [2022-11-16 11:33:05,493 INFO L134 LiptonReduction]: Checked pairs total: 16132 [2022-11-16 11:33:05,494 INFO L136 LiptonReduction]: Total number of compositions: 77 [2022-11-16 11:33:05,494 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 41 transitions, 114 flow [2022-11-16 11:33:06,705 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24777 states, 24642 states have (on average 4.777899521142764) internal successors, (117737), 24776 states have internal predecessors, (117737), 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) [2022-11-16 11:33:06,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:33:06,723 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;@18afd592, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:33:06,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-16 11:33:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 24777 states, 24642 states have (on average 4.777899521142764) internal successors, (117737), 24776 states have internal predecessors, (117737), 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) [2022-11-16 11:33:06,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:33:06,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:06,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:33:06,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-16 11:33:06,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash 22513, now seen corresponding path program 1 times [2022-11-16 11:33:06,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:06,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873585187] [2022-11-16 11:33:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:06,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:06,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:06,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873585187] [2022-11-16 11:33:06,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873585187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:06,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:06,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:06,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050874439] [2022-11-16 11:33:06,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:06,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:33:06,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:06,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:33:06,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:33:06,825 INFO L87 Difference]: Start difference. First operand has 24777 states, 24642 states have (on average 4.777899521142764) internal successors, (117737), 24776 states have internal predecessors, (117737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:07,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:07,310 INFO L93 Difference]: Finished difference Result 19206 states and 80261 transitions. [2022-11-16 11:33:07,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:33:07,311 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:33:07,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:07,625 INFO L225 Difference]: With dead ends: 19206 [2022-11-16 11:33:07,625 INFO L226 Difference]: Without dead ends: 19206 [2022-11-16 11:33:07,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:33:07,626 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:07,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19206 states. [2022-11-16 11:33:08,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19206 to 19206. [2022-11-16 11:33:08,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19206 states, 19128 states have (on average 4.195995399414471) internal successors, (80261), 19205 states have internal predecessors, (80261), 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) [2022-11-16 11:33:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19206 states to 19206 states and 80261 transitions. [2022-11-16 11:33:08,948 INFO L78 Accepts]: Start accepts. Automaton has 19206 states and 80261 transitions. Word has length 2 [2022-11-16 11:33:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:08,949 INFO L495 AbstractCegarLoop]: Abstraction has 19206 states and 80261 transitions. [2022-11-16 11:33:08,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:08,949 INFO L276 IsEmpty]: Start isEmpty. Operand 19206 states and 80261 transitions. [2022-11-16 11:33:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:33:08,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:08,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:33:08,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:33:08,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-16 11:33:08,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:08,952 INFO L85 PathProgramCache]: Analyzing trace with hash 22505, now seen corresponding path program 1 times [2022-11-16 11:33:08,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:08,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600089076] [2022-11-16 11:33:08,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:08,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:08,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:08,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600089076] [2022-11-16 11:33:08,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600089076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:08,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:08,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:08,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267865142] [2022-11-16 11:33:08,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:08,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:08,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:08,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:08,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:08,981 INFO L87 Difference]: Start difference. First operand 19206 states and 80261 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:09,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:09,291 INFO L93 Difference]: Finished difference Result 16405 states and 68256 transitions. [2022-11-16 11:33:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:09,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:33:09,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:09,451 INFO L225 Difference]: With dead ends: 16405 [2022-11-16 11:33:09,451 INFO L226 Difference]: Without dead ends: 16405 [2022-11-16 11:33:09,452 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 [2022-11-16 11:33:09,452 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:09,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 15 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:09,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16405 states. [2022-11-16 11:33:10,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16405 to 16405. [2022-11-16 11:33:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16405 states, 16358 states have (on average 4.172637241716592) internal successors, (68256), 16404 states have internal predecessors, (68256), 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) [2022-11-16 11:33:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16405 states to 16405 states and 68256 transitions. [2022-11-16 11:33:10,389 INFO L78 Accepts]: Start accepts. Automaton has 16405 states and 68256 transitions. Word has length 2 [2022-11-16 11:33:10,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:10,389 INFO L495 AbstractCegarLoop]: Abstraction has 16405 states and 68256 transitions. [2022-11-16 11:33:10,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:10,390 INFO L276 IsEmpty]: Start isEmpty. Operand 16405 states and 68256 transitions. [2022-11-16 11:33:10,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:33:10,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:10,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:33:10,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:33:10,391 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-16 11:33:10,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:10,392 INFO L85 PathProgramCache]: Analyzing trace with hash 22507, now seen corresponding path program 1 times [2022-11-16 11:33:10,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:10,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94391490] [2022-11-16 11:33:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:10,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:10,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:10,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94391490] [2022-11-16 11:33:10,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94391490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:10,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:10,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:10,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157129826] [2022-11-16 11:33:10,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:10,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:10,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:10,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:10,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:10,589 INFO L87 Difference]: Start difference. First operand 16405 states and 68256 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:10,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:10,725 INFO L93 Difference]: Finished difference Result 13604 states and 56251 transitions. [2022-11-16 11:33:10,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:10,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:33:10,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:10,803 INFO L225 Difference]: With dead ends: 13604 [2022-11-16 11:33:10,804 INFO L226 Difference]: Without dead ends: 13604 [2022-11-16 11:33:10,804 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 [2022-11-16 11:33:10,805 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:10,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 15 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:10,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13604 states. [2022-11-16 11:33:11,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13604 to 13604. [2022-11-16 11:33:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13604 states, 13588 states have (on average 4.139755666764793) internal successors, (56251), 13603 states have internal predecessors, (56251), 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) [2022-11-16 11:33:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13604 states to 13604 states and 56251 transitions. [2022-11-16 11:33:11,517 INFO L78 Accepts]: Start accepts. Automaton has 13604 states and 56251 transitions. Word has length 2 [2022-11-16 11:33:11,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:11,518 INFO L495 AbstractCegarLoop]: Abstraction has 13604 states and 56251 transitions. [2022-11-16 11:33:11,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:11,518 INFO L276 IsEmpty]: Start isEmpty. Operand 13604 states and 56251 transitions. [2022-11-16 11:33:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:33:11,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:11,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:11,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:33:11,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-16 11:33:11,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:11,520 INFO L85 PathProgramCache]: Analyzing trace with hash 654571235, now seen corresponding path program 1 times [2022-11-16 11:33:11,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:11,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822853784] [2022-11-16 11:33:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:11,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:11,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:11,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822853784] [2022-11-16 11:33:11,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822853784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:11,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:11,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:33:11,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826042733] [2022-11-16 11:33:11,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:11,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:11,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:11,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:11,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:11,564 INFO L87 Difference]: Start difference. First operand 13604 states and 56251 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2022-11-16 11:33:12,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:12,003 INFO L93 Difference]: Finished difference Result 18213 states and 69447 transitions. [2022-11-16 11:33:12,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:12,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2022-11-16 11:33:12,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:12,123 INFO L225 Difference]: With dead ends: 18213 [2022-11-16 11:33:12,123 INFO L226 Difference]: Without dead ends: 18213 [2022-11-16 11:33:12,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:12,125 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:12,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 18 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:33:12,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18213 states. [2022-11-16 11:33:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18213 to 15501. [2022-11-16 11:33:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15501 states, 15486 states have (on average 3.8563218390804597) internal successors, (59719), 15500 states have internal predecessors, (59719), 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) [2022-11-16 11:33:12,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15501 states to 15501 states and 59719 transitions. [2022-11-16 11:33:12,839 INFO L78 Accepts]: Start accepts. Automaton has 15501 states and 59719 transitions. Word has length 7 [2022-11-16 11:33:12,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:12,840 INFO L495 AbstractCegarLoop]: Abstraction has 15501 states and 59719 transitions. [2022-11-16 11:33:12,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2022-11-16 11:33:12,840 INFO L276 IsEmpty]: Start isEmpty. Operand 15501 states and 59719 transitions. [2022-11-16 11:33:12,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:33:12,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:12,846 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:12,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:33:12,847 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-16 11:33:12,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:12,848 INFO L85 PathProgramCache]: Analyzing trace with hash 973231157, now seen corresponding path program 1 times [2022-11-16 11:33:12,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:12,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825177865] [2022-11-16 11:33:12,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:12,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:12,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:12,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:12,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825177865] [2022-11-16 11:33:12,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825177865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:12,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:12,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:33:12,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927449197] [2022-11-16 11:33:12,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:12,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:12,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:12,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:12,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:12,917 INFO L87 Difference]: Start difference. First operand 15501 states and 59719 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:12,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:12,950 INFO L93 Difference]: Finished difference Result 1051 states and 2047 transitions. [2022-11-16 11:33:12,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:12,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 11:33:12,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:12,954 INFO L225 Difference]: With dead ends: 1051 [2022-11-16 11:33:12,954 INFO L226 Difference]: Without dead ends: 1051 [2022-11-16 11:33:12,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:12,957 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:12,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 21 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:12,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-11-16 11:33:12,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1051. [2022-11-16 11:33:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.9495238095238094) internal successors, (2047), 1050 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2047 transitions. [2022-11-16 11:33:12,983 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2047 transitions. Word has length 13 [2022-11-16 11:33:12,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:12,983 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 2047 transitions. [2022-11-16 11:33:12,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:12,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2047 transitions. [2022-11-16 11:33:12,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:33:12,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:12,986 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:12,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:33:12,986 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-16 11:33:12,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:12,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1192403802, now seen corresponding path program 1 times [2022-11-16 11:33:12,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:12,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639551325] [2022-11-16 11:33:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:12,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:33:13,015 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:33:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:33:13,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:33:13,044 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:33:13,045 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-16 11:33:13,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 9 remaining) [2022-11-16 11:33:13,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 9 remaining) [2022-11-16 11:33:13,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2022-11-16 11:33:13,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2022-11-16 11:33:13,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining) [2022-11-16 11:33:13,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining) [2022-11-16 11:33:13,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2022-11-16 11:33:13,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2022-11-16 11:33:13,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:33:13,048 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-16 11:33:13,048 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:33:13,048 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-16 11:33:13,079 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:33:13,081 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:33:13,081 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 100 transitions, 245 flow [2022-11-16 11:33:13,082 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 100 transitions, 245 flow [2022-11-16 11:33:13,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 100 transitions, 245 flow [2022-11-16 11:33:13,137 INFO L130 PetriNetUnfolder]: 11/188 cut-off events. [2022-11-16 11:33:13,137 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-16 11:33:13,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 188 events. 11/188 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 474 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 170. Up to 12 conditions per place. [2022-11-16 11:33:13,147 INFO L119 LiptonReduction]: Number of co-enabled transitions 5400 [2022-11-16 11:33:15,311 INFO L134 LiptonReduction]: Checked pairs total: 19991 [2022-11-16 11:33:15,312 INFO L136 LiptonReduction]: Total number of compositions: 88 [2022-11-16 11:33:15,312 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 49 transitions, 143 flow [2022-11-16 11:33:21,397 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 173607 states, 173329 states have (on average 5.761482498600927) internal successors, (998632), 173606 states have internal predecessors, (998632), 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) [2022-11-16 11:33:21,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:33:21,412 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;@18afd592, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:33:21,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-16 11:33:21,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 173607 states, 173329 states have (on average 5.761482498600927) internal successors, (998632), 173606 states have internal predecessors, (998632), 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) [2022-11-16 11:33:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:33:21,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:21,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:33:21,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-16 11:33:21,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash 28937, now seen corresponding path program 1 times [2022-11-16 11:33:21,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:21,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274995582] [2022-11-16 11:33:21,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:21,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:21,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:21,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274995582] [2022-11-16 11:33:21,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274995582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:21,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:21,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:21,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471997207] [2022-11-16 11:33:21,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:21,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:21,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:21,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:21,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:21,886 INFO L87 Difference]: Start difference. First operand has 173607 states, 173329 states have (on average 5.761482498600927) internal successors, (998632), 173606 states have internal predecessors, (998632), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:24,520 INFO L93 Difference]: Finished difference Result 114846 states and 576239 transitions. [2022-11-16 11:33:24,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:24,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:33:24,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:25,539 INFO L225 Difference]: With dead ends: 114846 [2022-11-16 11:33:25,539 INFO L226 Difference]: Without dead ends: 114846 [2022-11-16 11:33:25,539 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 [2022-11-16 11:33:25,540 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:25,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 18 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:26,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114846 states. [2022-11-16 11:33:30,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114846 to 114846. [2022-11-16 11:33:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114846 states, 114751 states have (on average 5.02164687017978) internal successors, (576239), 114845 states have internal predecessors, (576239), 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) [2022-11-16 11:33:31,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114846 states to 114846 states and 576239 transitions. [2022-11-16 11:33:31,927 INFO L78 Accepts]: Start accepts. Automaton has 114846 states and 576239 transitions. Word has length 2 [2022-11-16 11:33:31,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:31,928 INFO L495 AbstractCegarLoop]: Abstraction has 114846 states and 576239 transitions. [2022-11-16 11:33:31,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:31,928 INFO L276 IsEmpty]: Start isEmpty. Operand 114846 states and 576239 transitions. [2022-11-16 11:33:31,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:33:31,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:31,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:33:31,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:33:31,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-16 11:33:31,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:31,929 INFO L85 PathProgramCache]: Analyzing trace with hash 28938, now seen corresponding path program 1 times [2022-11-16 11:33:31,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:31,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624217718] [2022-11-16 11:33:31,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:31,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:31,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:31,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:31,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624217718] [2022-11-16 11:33:31,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624217718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:31,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:31,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:31,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887405131] [2022-11-16 11:33:31,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:31,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:31,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:31,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:31,990 INFO L87 Difference]: Start difference. First operand 114846 states and 576239 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:33,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:33,783 INFO L93 Difference]: Finished difference Result 95238 states and 475397 transitions. [2022-11-16 11:33:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:33,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:33:33,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:34,370 INFO L225 Difference]: With dead ends: 95238 [2022-11-16 11:33:34,370 INFO L226 Difference]: Without dead ends: 95238 [2022-11-16 11:33:34,370 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 [2022-11-16 11:33:34,370 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:34,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 18 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:34,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95238 states. [2022-11-16 11:33:37,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95238 to 95238. [2022-11-16 11:33:37,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95238 states, 95206 states have (on average 4.99335125937441) internal successors, (475397), 95237 states have internal predecessors, (475397), 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) [2022-11-16 11:33:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95238 states to 95238 states and 475397 transitions. [2022-11-16 11:33:39,481 INFO L78 Accepts]: Start accepts. Automaton has 95238 states and 475397 transitions. Word has length 2 [2022-11-16 11:33:39,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:39,481 INFO L495 AbstractCegarLoop]: Abstraction has 95238 states and 475397 transitions. [2022-11-16 11:33:39,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:39,482 INFO L276 IsEmpty]: Start isEmpty. Operand 95238 states and 475397 transitions. [2022-11-16 11:33:39,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:33:39,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:39,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:39,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:33:39,483 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-16 11:33:39,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:39,483 INFO L85 PathProgramCache]: Analyzing trace with hash 323628806, now seen corresponding path program 1 times [2022-11-16 11:33:39,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:39,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439856040] [2022-11-16 11:33:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:39,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:39,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:39,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439856040] [2022-11-16 11:33:39,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439856040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:39,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:39,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:33:39,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319702606] [2022-11-16 11:33:39,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:39,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:39,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:39,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:39,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:39,516 INFO L87 Difference]: Start difference. First operand 95238 states and 475397 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2022-11-16 11:33:42,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:42,087 INFO L93 Difference]: Finished difference Result 139177 states and 638638 transitions. [2022-11-16 11:33:42,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:42,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2022-11-16 11:33:42,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:42,889 INFO L225 Difference]: With dead ends: 139177 [2022-11-16 11:33:42,889 INFO L226 Difference]: Without dead ends: 139177 [2022-11-16 11:33:42,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:42,890 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:42,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 21 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:33:43,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139177 states.