./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:39:32,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:39:32,070 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 19:39:32,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:39:32,076 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:39:32,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:39:32,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:39:32,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:39:32,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:39:32,104 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:39:32,105 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:39:32,105 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:39:32,106 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:39:32,106 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:39:32,107 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:39:32,107 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:39:32,108 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:39:32,108 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:39:32,109 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:39:32,110 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:39:32,110 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:39:32,113 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:39:32,113 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 19:39:32,114 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 19:39:32,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:39:32,115 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:39:32,115 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:39:32,125 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:39:32,125 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:39:32,126 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 19:39:32,126 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 19:39:32,127 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 19:39:32,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:39:32,127 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 19:39:32,127 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 19:39:32,128 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:39:32,128 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:39:32,128 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:39:32,128 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:39:32,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:39:32,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:39:32,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:39:32,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:39:32,129 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:39:32,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:39:32,130 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:39:32,130 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:39:32,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:39:32,130 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab [2023-12-02 19:39:32,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:39:32,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:39:32,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:39:32,380 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:39:32,381 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:39:32,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2023-12-02 19:39:35,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:39:35,349 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:39:35,349 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2023-12-02 19:39:35,365 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/data/fe869540a/9d3e8647bb884ce3b3e0906cf15d9f0e/FLAG5308221a8 [2023-12-02 19:39:35,379 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/data/fe869540a/9d3e8647bb884ce3b3e0906cf15d9f0e [2023-12-02 19:39:35,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:39:35,383 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:39:35,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:39:35,385 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:39:35,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:39:35,389 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:39:35" (1/1) ... [2023-12-02 19:39:35,390 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e21747c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:35, skipping insertion in model container [2023-12-02 19:39:35,390 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:39:35" (1/1) ... [2023-12-02 19:39:35,438 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:39:35,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:39:35,786 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:39:35,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:39:35,887 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:39:35,892 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:39:35,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:35 WrapperNode [2023-12-02 19:39:35,893 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:39:35,894 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:39:35,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:39:35,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:39:35,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:35" (1/1) ... [2023-12-02 19:39:35,921 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:35" (1/1) ... [2023-12-02 19:39:35,953 INFO L138 Inliner]: procedures = 184, calls = 150, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 234 [2023-12-02 19:39:35,954 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:39:35,955 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:39:35,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:39:35,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:39:35,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:35" (1/1) ... [2023-12-02 19:39:35,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:35" (1/1) ... [2023-12-02 19:39:35,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:35" (1/1) ... [2023-12-02 19:39:35,973 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:35" (1/1) ... [2023-12-02 19:39:35,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:35" (1/1) ... [2023-12-02 19:39:36,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:35" (1/1) ... [2023-12-02 19:39:36,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:35" (1/1) ... [2023-12-02 19:39:36,008 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:35" (1/1) ... [2023-12-02 19:39:36,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:39:36,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:39:36,035 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:39:36,035 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:39:36,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:35" (1/1) ... [2023-12-02 19:39:36,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:39:36,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:39:36,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:39:36,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:39:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:39:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 19:39:36,143 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 19:39:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2023-12-02 19:39:36,143 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2023-12-02 19:39:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:39:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 19:39:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2023-12-02 19:39:36,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2023-12-02 19:39:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:39:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 19:39:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:39:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2023-12-02 19:39:36,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2023-12-02 19:39:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2023-12-02 19:39:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2023-12-02 19:39:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2023-12-02 19:39:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2023-12-02 19:39:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:39:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2023-12-02 19:39:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2023-12-02 19:39:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:39:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2023-12-02 19:39:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2023-12-02 19:39:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:39:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2023-12-02 19:39:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2023-12-02 19:39:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-12-02 19:39:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:39:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:39:36,310 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:39:36,312 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:39:37,002 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:39:37,067 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:39:37,068 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 19:39:37,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:39:37 BoogieIcfgContainer [2023-12-02 19:39:37,070 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:39:37,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:39:37,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:39:37,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:39:37,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:39:35" (1/3) ... [2023-12-02 19:39:37,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b8b196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:39:37, skipping insertion in model container [2023-12-02 19:39:37,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:35" (2/3) ... [2023-12-02 19:39:37,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b8b196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:39:37, skipping insertion in model container [2023-12-02 19:39:37,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:39:37" (3/3) ... [2023-12-02 19:39:37,090 INFO L112 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2023-12-02 19:39:37,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:39:37,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 162 error locations. [2023-12-02 19:39:37,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:39:37,171 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;@1e8c221, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:39:37,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 162 error locations. [2023-12-02 19:39:37,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 157 states have (on average 2.1910828025477707) internal successors, (344), 319 states have internal predecessors, (344), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 19:39:37,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 19:39:37,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:37,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 19:39:37,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:37,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:37,187 INFO L85 PathProgramCache]: Analyzing trace with hash 622806085, now seen corresponding path program 1 times [2023-12-02 19:39:37,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:37,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316205066] [2023-12-02 19:39:37,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:37,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:37,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:37,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316205066] [2023-12-02 19:39:37,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316205066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:37,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:37,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:39:37,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480394798] [2023-12-02 19:39:37,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:37,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:39:37,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:37,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:39:37,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:39:37,493 INFO L87 Difference]: Start difference. First operand has 358 states, 157 states have (on average 2.1910828025477707) internal successors, (344), 319 states have internal predecessors, (344), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:37,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:37,947 INFO L93 Difference]: Finished difference Result 382 states and 443 transitions. [2023-12-02 19:39:37,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:39:37,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 5 [2023-12-02 19:39:37,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:37,964 INFO L225 Difference]: With dead ends: 382 [2023-12-02 19:39:37,964 INFO L226 Difference]: Without dead ends: 381 [2023-12-02 19:39:37,966 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 [2023-12-02 19:39:37,969 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 356 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:37,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 235 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:39:37,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-12-02 19:39:38,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 352. [2023-12-02 19:39:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 170 states have (on average 2.0) internal successors, (340), 308 states have internal predecessors, (340), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2023-12-02 19:39:38,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 409 transitions. [2023-12-02 19:39:38,039 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 409 transitions. Word has length 5 [2023-12-02 19:39:38,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:38,039 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 409 transitions. [2023-12-02 19:39:38,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:38,040 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 409 transitions. [2023-12-02 19:39:38,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 19:39:38,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:38,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 19:39:38,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:39:38,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:38,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:38,042 INFO L85 PathProgramCache]: Analyzing trace with hash 622806086, now seen corresponding path program 1 times [2023-12-02 19:39:38,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:38,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012257798] [2023-12-02 19:39:38,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:38,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:38,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:38,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:38,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012257798] [2023-12-02 19:39:38,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012257798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:38,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:38,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:39:38,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47278733] [2023-12-02 19:39:38,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:38,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:39:38,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:38,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:39:38,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:39:38,235 INFO L87 Difference]: Start difference. First operand 352 states and 409 transitions. Second operand has 4 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:38,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:38,841 INFO L93 Difference]: Finished difference Result 433 states and 517 transitions. [2023-12-02 19:39:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:39:38,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 5 [2023-12-02 19:39:38,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:38,848 INFO L225 Difference]: With dead ends: 433 [2023-12-02 19:39:38,848 INFO L226 Difference]: Without dead ends: 433 [2023-12-02 19:39:38,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:39:38,850 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 114 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:38,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 640 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 19:39:38,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-12-02 19:39:38,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 412. [2023-12-02 19:39:38,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 219 states have (on average 1.8721461187214612) internal successors, (410), 353 states have internal predecessors, (410), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (54), 40 states have call predecessors, (54), 42 states have call successors, (54) [2023-12-02 19:39:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 506 transitions. [2023-12-02 19:39:38,884 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 506 transitions. Word has length 5 [2023-12-02 19:39:38,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:38,884 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 506 transitions. [2023-12-02 19:39:38,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:38,885 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 506 transitions. [2023-12-02 19:39:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 19:39:38,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:38,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:38,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:39:38,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:38,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash -242179634, now seen corresponding path program 1 times [2023-12-02 19:39:38,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:38,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784475791] [2023-12-02 19:39:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:38,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:39,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:39,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784475791] [2023-12-02 19:39:39,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784475791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:39,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:39,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:39:39,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428782226] [2023-12-02 19:39:39,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:39,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:39:39,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:39,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:39:39,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:39:39,028 INFO L87 Difference]: Start difference. First operand 412 states and 506 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:39,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:39,454 INFO L93 Difference]: Finished difference Result 411 states and 505 transitions. [2023-12-02 19:39:39,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:39:39,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2023-12-02 19:39:39,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:39,459 INFO L225 Difference]: With dead ends: 411 [2023-12-02 19:39:39,459 INFO L226 Difference]: Without dead ends: 411 [2023-12-02 19:39:39,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:39:39,460 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 10 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:39,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 897 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:39:39,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-02 19:39:39,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2023-12-02 19:39:39,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 219 states have (on average 1.8675799086757991) internal successors, (409), 352 states have internal predecessors, (409), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (54), 40 states have call predecessors, (54), 42 states have call successors, (54) [2023-12-02 19:39:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 505 transitions. [2023-12-02 19:39:39,484 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 505 transitions. Word has length 8 [2023-12-02 19:39:39,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:39,485 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 505 transitions. [2023-12-02 19:39:39,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:39,485 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 505 transitions. [2023-12-02 19:39:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 19:39:39,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:39,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:39,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:39:39,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:39,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:39,487 INFO L85 PathProgramCache]: Analyzing trace with hash -242179633, now seen corresponding path program 1 times [2023-12-02 19:39:39,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:39,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548104643] [2023-12-02 19:39:39,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:39,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:39,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:39,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548104643] [2023-12-02 19:39:39,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548104643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:39,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:39,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:39:39,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209162764] [2023-12-02 19:39:39,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:39,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:39:39,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:39,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:39:39,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:39:39,688 INFO L87 Difference]: Start difference. First operand 411 states and 505 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:40,191 INFO L93 Difference]: Finished difference Result 410 states and 504 transitions. [2023-12-02 19:39:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:39:40,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2023-12-02 19:39:40,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:40,194 INFO L225 Difference]: With dead ends: 410 [2023-12-02 19:39:40,194 INFO L226 Difference]: Without dead ends: 410 [2023-12-02 19:39:40,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:39:40,196 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 7 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:40,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 875 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:39:40,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-12-02 19:39:40,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2023-12-02 19:39:40,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 219 states have (on average 1.8630136986301369) internal successors, (408), 351 states have internal predecessors, (408), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (54), 40 states have call predecessors, (54), 42 states have call successors, (54) [2023-12-02 19:39:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 504 transitions. [2023-12-02 19:39:40,216 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 504 transitions. Word has length 8 [2023-12-02 19:39:40,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:40,216 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 504 transitions. [2023-12-02 19:39:40,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:40,216 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 504 transitions. [2023-12-02 19:39:40,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 19:39:40,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:40,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:40,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:39:40,217 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:40,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:40,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1719837565, now seen corresponding path program 1 times [2023-12-02 19:39:40,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:40,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747094061] [2023-12-02 19:39:40,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:40,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:40,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:40,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747094061] [2023-12-02 19:39:40,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747094061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:40,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:40,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:39:40,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579073322] [2023-12-02 19:39:40,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:40,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:39:40,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:40,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:39:40,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:39:40,286 INFO L87 Difference]: Start difference. First operand 410 states and 504 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:40,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:40,502 INFO L93 Difference]: Finished difference Result 409 states and 503 transitions. [2023-12-02 19:39:40,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:39:40,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-02 19:39:40,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:40,506 INFO L225 Difference]: With dead ends: 409 [2023-12-02 19:39:40,506 INFO L226 Difference]: Without dead ends: 409 [2023-12-02 19:39:40,506 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 [2023-12-02 19:39:40,507 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 2 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:40,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 516 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:39:40,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-12-02 19:39:40,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2023-12-02 19:39:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 219 states have (on average 1.8584474885844748) internal successors, (407), 350 states have internal predecessors, (407), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (54), 40 states have call predecessors, (54), 42 states have call successors, (54) [2023-12-02 19:39:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 503 transitions. [2023-12-02 19:39:40,526 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 503 transitions. Word has length 12 [2023-12-02 19:39:40,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:40,527 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 503 transitions. [2023-12-02 19:39:40,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:40,527 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 503 transitions. [2023-12-02 19:39:40,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 19:39:40,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:40,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:40,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:39:40,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:40,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:40,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1719837564, now seen corresponding path program 1 times [2023-12-02 19:39:40,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:40,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018539466] [2023-12-02 19:39:40,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:40,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:40,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:40,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018539466] [2023-12-02 19:39:40,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018539466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:40,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:40,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:39:40,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886994905] [2023-12-02 19:39:40,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:40,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:39:40,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:40,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:39:40,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:39:40,621 INFO L87 Difference]: Start difference. First operand 409 states and 503 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:40,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:40,870 INFO L93 Difference]: Finished difference Result 408 states and 502 transitions. [2023-12-02 19:39:40,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:39:40,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-02 19:39:40,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:40,874 INFO L225 Difference]: With dead ends: 408 [2023-12-02 19:39:40,874 INFO L226 Difference]: Without dead ends: 408 [2023-12-02 19:39:40,874 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 [2023-12-02 19:39:40,875 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:40,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 502 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:39:40,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-12-02 19:39:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2023-12-02 19:39:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 219 states have (on average 1.8538812785388128) internal successors, (406), 349 states have internal predecessors, (406), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (54), 40 states have call predecessors, (54), 42 states have call successors, (54) [2023-12-02 19:39:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 502 transitions. [2023-12-02 19:39:40,893 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 502 transitions. Word has length 12 [2023-12-02 19:39:40,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:40,894 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 502 transitions. [2023-12-02 19:39:40,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:40,894 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 502 transitions. [2023-12-02 19:39:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 19:39:40,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:40,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:40,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 19:39:40,895 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ASNullErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:40,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:40,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1077945920, now seen corresponding path program 1 times [2023-12-02 19:39:40,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:40,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253372120] [2023-12-02 19:39:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:40,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:41,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:41,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253372120] [2023-12-02 19:39:41,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253372120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:41,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:41,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:39:41,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16221512] [2023-12-02 19:39:41,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:41,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:39:41,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:41,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:39:41,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:39:41,054 INFO L87 Difference]: Start difference. First operand 408 states and 502 transitions. Second operand has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:41,589 INFO L93 Difference]: Finished difference Result 438 states and 547 transitions. [2023-12-02 19:39:41,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:39:41,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-12-02 19:39:41,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:41,593 INFO L225 Difference]: With dead ends: 438 [2023-12-02 19:39:41,593 INFO L226 Difference]: Without dead ends: 438 [2023-12-02 19:39:41,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:39:41,594 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 44 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:41,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1242 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:39:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-02 19:39:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 427. [2023-12-02 19:39:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 234 states have (on average 1.829059829059829) internal successors, (428), 365 states have internal predecessors, (428), 43 states have call successors, (43), 20 states have call predecessors, (43), 21 states have return successors, (58), 41 states have call predecessors, (58), 43 states have call successors, (58) [2023-12-02 19:39:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 529 transitions. [2023-12-02 19:39:41,614 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 529 transitions. Word has length 20 [2023-12-02 19:39:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:41,614 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 529 transitions. [2023-12-02 19:39:41,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 529 transitions. [2023-12-02 19:39:41,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 19:39:41,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:41,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:41,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 19:39:41,616 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ASNullErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:41,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:41,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1077945919, now seen corresponding path program 1 times [2023-12-02 19:39:41,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:41,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795900077] [2023-12-02 19:39:41,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:41,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:41,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:41,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:41,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795900077] [2023-12-02 19:39:41,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795900077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:41,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:41,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:39:41,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938367702] [2023-12-02 19:39:41,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:41,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:39:41,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:41,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:39:41,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:39:41,883 INFO L87 Difference]: Start difference. First operand 427 states and 529 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:42,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:42,498 INFO L93 Difference]: Finished difference Result 437 states and 546 transitions. [2023-12-02 19:39:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:39:42,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-12-02 19:39:42,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:42,502 INFO L225 Difference]: With dead ends: 437 [2023-12-02 19:39:42,502 INFO L226 Difference]: Without dead ends: 437 [2023-12-02 19:39:42,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:39:42,504 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 38 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:42,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1182 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 19:39:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-12-02 19:39:42,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 427. [2023-12-02 19:39:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 234 states have (on average 1.8247863247863247) internal successors, (427), 365 states have internal predecessors, (427), 43 states have call successors, (43), 20 states have call predecessors, (43), 21 states have return successors, (58), 41 states have call predecessors, (58), 43 states have call successors, (58) [2023-12-02 19:39:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 528 transitions. [2023-12-02 19:39:42,522 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 528 transitions. Word has length 20 [2023-12-02 19:39:42,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:42,522 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 528 transitions. [2023-12-02 19:39:42,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:42,523 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 528 transitions. [2023-12-02 19:39:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 19:39:42,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:42,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:42,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 19:39:42,524 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:42,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:42,525 INFO L85 PathProgramCache]: Analyzing trace with hash 932056405, now seen corresponding path program 1 times [2023-12-02 19:39:42,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:42,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751879611] [2023-12-02 19:39:42,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:42,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:42,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:42,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751879611] [2023-12-02 19:39:42,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751879611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:42,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:42,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:39:42,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013953743] [2023-12-02 19:39:42,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:42,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:39:42,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:42,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:39:42,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:39:42,689 INFO L87 Difference]: Start difference. First operand 427 states and 528 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:43,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:43,223 INFO L93 Difference]: Finished difference Result 523 states and 664 transitions. [2023-12-02 19:39:43,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:39:43,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-12-02 19:39:43,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:43,228 INFO L225 Difference]: With dead ends: 523 [2023-12-02 19:39:43,228 INFO L226 Difference]: Without dead ends: 523 [2023-12-02 19:39:43,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:39:43,229 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 160 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:43,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1186 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:39:43,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-12-02 19:39:43,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 459. [2023-12-02 19:39:43,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 257 states have (on average 1.8054474708171206) internal successors, (464), 391 states have internal predecessors, (464), 49 states have call successors, (49), 24 states have call predecessors, (49), 24 states have return successors, (70), 43 states have call predecessors, (70), 49 states have call successors, (70) [2023-12-02 19:39:43,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 583 transitions. [2023-12-02 19:39:43,251 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 583 transitions. Word has length 21 [2023-12-02 19:39:43,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:43,251 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 583 transitions. [2023-12-02 19:39:43,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:43,252 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 583 transitions. [2023-12-02 19:39:43,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 19:39:43,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:43,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:43,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 19:39:43,253 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:43,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash 932056406, now seen corresponding path program 1 times [2023-12-02 19:39:43,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:43,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351464231] [2023-12-02 19:39:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:43,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:43,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:43,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351464231] [2023-12-02 19:39:43,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351464231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:43,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:43,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:39:43,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485289540] [2023-12-02 19:39:43,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:43,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:39:43,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:43,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:39:43,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:39:43,508 INFO L87 Difference]: Start difference. First operand 459 states and 583 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:44,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:44,082 INFO L93 Difference]: Finished difference Result 468 states and 595 transitions. [2023-12-02 19:39:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:39:44,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-12-02 19:39:44,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:44,086 INFO L225 Difference]: With dead ends: 468 [2023-12-02 19:39:44,086 INFO L226 Difference]: Without dead ends: 468 [2023-12-02 19:39:44,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:39:44,087 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 35 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:44,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1194 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:39:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-12-02 19:39:44,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 459. [2023-12-02 19:39:44,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 257 states have (on average 1.801556420233463) internal successors, (463), 391 states have internal predecessors, (463), 49 states have call successors, (49), 24 states have call predecessors, (49), 24 states have return successors, (70), 43 states have call predecessors, (70), 49 states have call successors, (70) [2023-12-02 19:39:44,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 582 transitions. [2023-12-02 19:39:44,105 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 582 transitions. Word has length 21 [2023-12-02 19:39:44,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:44,106 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 582 transitions. [2023-12-02 19:39:44,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:44,106 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 582 transitions. [2023-12-02 19:39:44,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 19:39:44,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:44,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:44,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 19:39:44,108 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:44,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:44,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1026617056, now seen corresponding path program 1 times [2023-12-02 19:39:44,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:44,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864057362] [2023-12-02 19:39:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:44,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:44,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:44,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864057362] [2023-12-02 19:39:44,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864057362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:44,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:44,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 19:39:44,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742065380] [2023-12-02 19:39:44,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:44,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:39:44,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:44,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:39:44,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:39:44,457 INFO L87 Difference]: Start difference. First operand 459 states and 582 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:39:45,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:45,614 INFO L93 Difference]: Finished difference Result 661 states and 905 transitions. [2023-12-02 19:39:45,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 19:39:45,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-12-02 19:39:45,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:45,620 INFO L225 Difference]: With dead ends: 661 [2023-12-02 19:39:45,620 INFO L226 Difference]: Without dead ends: 661 [2023-12-02 19:39:45,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-02 19:39:45,621 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 695 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:45,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 803 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 19:39:45,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-12-02 19:39:45,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 564. [2023-12-02 19:39:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 333 states have (on average 1.6996996996996998) internal successors, (566), 468 states have internal predecessors, (566), 63 states have call successors, (63), 30 states have call predecessors, (63), 39 states have return successors, (138), 65 states have call predecessors, (138), 63 states have call successors, (138) [2023-12-02 19:39:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 767 transitions. [2023-12-02 19:39:45,652 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 767 transitions. Word has length 20 [2023-12-02 19:39:45,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:45,652 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 767 transitions. [2023-12-02 19:39:45,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:39:45,652 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 767 transitions. [2023-12-02 19:39:45,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 19:39:45,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:45,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:45,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 19:39:45,654 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ASIdleErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:45,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:45,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1181868163, now seen corresponding path program 1 times [2023-12-02 19:39:45,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:45,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617052743] [2023-12-02 19:39:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:45,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:45,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:45,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617052743] [2023-12-02 19:39:45,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617052743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:45,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:45,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:39:45,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596381147] [2023-12-02 19:39:45,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:45,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:39:45,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:45,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:39:45,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:39:45,809 INFO L87 Difference]: Start difference. First operand 564 states and 767 transitions. Second operand has 7 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:46,394 INFO L93 Difference]: Finished difference Result 694 states and 993 transitions. [2023-12-02 19:39:46,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:39:46,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-12-02 19:39:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:46,400 INFO L225 Difference]: With dead ends: 694 [2023-12-02 19:39:46,400 INFO L226 Difference]: Without dead ends: 694 [2023-12-02 19:39:46,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:39:46,401 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 108 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:46,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 1213 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:39:46,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2023-12-02 19:39:46,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 630. [2023-12-02 19:39:46,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 387 states have (on average 1.6718346253229974) internal successors, (647), 524 states have internal predecessors, (647), 66 states have call successors, (66), 36 states have call predecessors, (66), 48 states have return successors, (160), 69 states have call predecessors, (160), 66 states have call successors, (160) [2023-12-02 19:39:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 873 transitions. [2023-12-02 19:39:46,435 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 873 transitions. Word has length 22 [2023-12-02 19:39:46,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:46,435 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 873 transitions. [2023-12-02 19:39:46,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:46,436 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 873 transitions. [2023-12-02 19:39:46,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 19:39:46,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:46,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:46,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 19:39:46,437 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ASIdleErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:46,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:46,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1181868162, now seen corresponding path program 1 times [2023-12-02 19:39:46,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:46,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483594739] [2023-12-02 19:39:46,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:46,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:46,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:46,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:46,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483594739] [2023-12-02 19:39:46,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483594739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:46,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:46,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 19:39:46,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472345190] [2023-12-02 19:39:46,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:46,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:39:46,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:46,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:39:46,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:39:46,708 INFO L87 Difference]: Start difference. First operand 630 states and 873 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:47,463 INFO L93 Difference]: Finished difference Result 489 states and 619 transitions. [2023-12-02 19:39:47,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:39:47,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-12-02 19:39:47,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:47,467 INFO L225 Difference]: With dead ends: 489 [2023-12-02 19:39:47,467 INFO L226 Difference]: Without dead ends: 489 [2023-12-02 19:39:47,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:39:47,468 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 421 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:47,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 783 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 19:39:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-12-02 19:39:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 413. [2023-12-02 19:39:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 223 states have (on average 1.8251121076233183) internal successors, (407), 357 states have internal predecessors, (407), 40 states have call successors, (40), 20 states have call predecessors, (40), 21 states have return successors, (55), 35 states have call predecessors, (55), 40 states have call successors, (55) [2023-12-02 19:39:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 502 transitions. [2023-12-02 19:39:47,485 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 502 transitions. Word has length 22 [2023-12-02 19:39:47,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:47,485 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 502 transitions. [2023-12-02 19:39:47,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:39:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 502 transitions. [2023-12-02 19:39:47,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 19:39:47,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:47,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:47,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 19:39:47,487 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting system_initializeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:47,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:47,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1083527551, now seen corresponding path program 1 times [2023-12-02 19:39:47,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:47,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286768794] [2023-12-02 19:39:47,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:47,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:47,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:47,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286768794] [2023-12-02 19:39:47,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286768794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:47,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:47,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:39:47,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218410656] [2023-12-02 19:39:47,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:47,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:39:47,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:47,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:39:47,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:39:47,571 INFO L87 Difference]: Start difference. First operand 413 states and 502 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:47,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:47,717 INFO L93 Difference]: Finished difference Result 424 states and 513 transitions. [2023-12-02 19:39:47,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:39:47,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-12-02 19:39:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:47,720 INFO L225 Difference]: With dead ends: 424 [2023-12-02 19:39:47,720 INFO L226 Difference]: Without dead ends: 422 [2023-12-02 19:39:47,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:39:47,721 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 20 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:47,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 901 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:39:47,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-02 19:39:47,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 420. [2023-12-02 19:39:47,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 229 states have (on average 1.8165938864628821) internal successors, (416), 363 states have internal predecessors, (416), 40 states have call successors, (40), 21 states have call predecessors, (40), 22 states have return successors, (55), 35 states have call predecessors, (55), 40 states have call successors, (55) [2023-12-02 19:39:47,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 511 transitions. [2023-12-02 19:39:47,732 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 511 transitions. Word has length 30 [2023-12-02 19:39:47,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:47,732 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 511 transitions. [2023-12-02 19:39:47,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:47,733 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 511 transitions. [2023-12-02 19:39:47,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 19:39:47,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:47,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:47,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 19:39:47,734 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:47,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:47,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1855071704, now seen corresponding path program 1 times [2023-12-02 19:39:47,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:47,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020195213] [2023-12-02 19:39:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:47,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:47,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:47,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020195213] [2023-12-02 19:39:47,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020195213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:47,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:47,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 19:39:47,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309663753] [2023-12-02 19:39:47,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:47,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 19:39:47,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:47,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 19:39:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:39:47,948 INFO L87 Difference]: Start difference. First operand 420 states and 511 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:39:48,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:48,555 INFO L93 Difference]: Finished difference Result 461 states and 594 transitions. [2023-12-02 19:39:48,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 19:39:48,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2023-12-02 19:39:48,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:48,559 INFO L225 Difference]: With dead ends: 461 [2023-12-02 19:39:48,559 INFO L226 Difference]: Without dead ends: 455 [2023-12-02 19:39:48,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-02 19:39:48,560 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 133 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:48,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1899 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 19:39:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-02 19:39:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 418. [2023-12-02 19:39:48,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 228 states have (on average 1.8157894736842106) internal successors, (414), 361 states have internal predecessors, (414), 40 states have call successors, (40), 21 states have call predecessors, (40), 21 states have return successors, (54), 35 states have call predecessors, (54), 40 states have call successors, (54) [2023-12-02 19:39:48,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 508 transitions. [2023-12-02 19:39:48,576 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 508 transitions. Word has length 29 [2023-12-02 19:39:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:48,576 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 508 transitions. [2023-12-02 19:39:48,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:39:48,577 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 508 transitions. [2023-12-02 19:39:48,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 19:39:48,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:48,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:48,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 19:39:48,578 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting system_initializeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:48,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:48,579 INFO L85 PathProgramCache]: Analyzing trace with hash -806277217, now seen corresponding path program 1 times [2023-12-02 19:39:48,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:48,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482521034] [2023-12-02 19:39:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:48,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:48,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:48,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482521034] [2023-12-02 19:39:48,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482521034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:48,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:48,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 19:39:48,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900288348] [2023-12-02 19:39:48,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:48,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 19:39:48,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:48,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 19:39:48,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:39:48,821 INFO L87 Difference]: Start difference. First operand 418 states and 508 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:39:49,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:49,687 INFO L93 Difference]: Finished difference Result 600 states and 810 transitions. [2023-12-02 19:39:49,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 19:39:49,687 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2023-12-02 19:39:49,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:49,691 INFO L225 Difference]: With dead ends: 600 [2023-12-02 19:39:49,691 INFO L226 Difference]: Without dead ends: 596 [2023-12-02 19:39:49,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-12-02 19:39:49,692 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 309 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:49,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1522 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 19:39:49,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-12-02 19:39:49,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 540. [2023-12-02 19:39:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 318 states have (on average 1.720125786163522) internal successors, (547), 451 states have internal predecessors, (547), 54 states have call successors, (54), 30 states have call predecessors, (54), 39 states have return successors, (138), 58 states have call predecessors, (138), 54 states have call successors, (138) [2023-12-02 19:39:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 739 transitions. [2023-12-02 19:39:49,710 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 739 transitions. Word has length 32 [2023-12-02 19:39:49,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:49,710 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 739 transitions. [2023-12-02 19:39:49,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:39:49,711 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 739 transitions. [2023-12-02 19:39:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 19:39:49,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:49,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:49,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 19:39:49,712 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting system_initializeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:49,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:49,712 INFO L85 PathProgramCache]: Analyzing trace with hash 86321188, now seen corresponding path program 1 times [2023-12-02 19:39:49,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:49,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437977646] [2023-12-02 19:39:49,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:49,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:49,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:49,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:49,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437977646] [2023-12-02 19:39:49,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437977646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:49,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:49,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 19:39:49,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435030420] [2023-12-02 19:39:49,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:49,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:39:49,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:49,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:39:49,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:39:49,996 INFO L87 Difference]: Start difference. First operand 540 states and 739 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:39:50,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:50,533 INFO L93 Difference]: Finished difference Result 564 states and 796 transitions. [2023-12-02 19:39:50,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:39:50,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-12-02 19:39:50,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:50,536 INFO L225 Difference]: With dead ends: 564 [2023-12-02 19:39:50,537 INFO L226 Difference]: Without dead ends: 564 [2023-12-02 19:39:50,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:39:50,537 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 433 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:50,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 261 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:39:50,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-12-02 19:39:50,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 521. [2023-12-02 19:39:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 318 states have (on average 1.619496855345912) internal successors, (515), 432 states have internal predecessors, (515), 54 states have call successors, (54), 30 states have call predecessors, (54), 39 states have return successors, (138), 58 states have call predecessors, (138), 54 states have call successors, (138) [2023-12-02 19:39:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 707 transitions. [2023-12-02 19:39:50,554 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 707 transitions. Word has length 33 [2023-12-02 19:39:50,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:50,555 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 707 transitions. [2023-12-02 19:39:50,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:39:50,555 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 707 transitions. [2023-12-02 19:39:50,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 19:39:50,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:50,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:50,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 19:39:50,556 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting system_initializeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:50,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:50,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1619010374, now seen corresponding path program 1 times [2023-12-02 19:39:50,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:50,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106214231] [2023-12-02 19:39:50,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:50,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:51,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:51,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106214231] [2023-12-02 19:39:51,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106214231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:51,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:51,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 19:39:51,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549862885] [2023-12-02 19:39:51,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:51,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 19:39:51,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:51,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 19:39:51,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-02 19:39:51,202 INFO L87 Difference]: Start difference. First operand 521 states and 707 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:39:52,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:52,237 INFO L93 Difference]: Finished difference Result 578 states and 836 transitions. [2023-12-02 19:39:52,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 19:39:52,239 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2023-12-02 19:39:52,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:52,243 INFO L225 Difference]: With dead ends: 578 [2023-12-02 19:39:52,243 INFO L226 Difference]: Without dead ends: 578 [2023-12-02 19:39:52,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-02 19:39:52,244 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 214 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:52,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1464 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 19:39:52,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2023-12-02 19:39:52,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 526. [2023-12-02 19:39:52,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 322 states have (on average 1.6149068322981366) internal successors, (520), 435 states have internal predecessors, (520), 55 states have call successors, (55), 31 states have call predecessors, (55), 39 states have return successors, (140), 59 states have call predecessors, (140), 55 states have call successors, (140) [2023-12-02 19:39:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 715 transitions. [2023-12-02 19:39:52,262 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 715 transitions. Word has length 34 [2023-12-02 19:39:52,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:52,263 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 715 transitions. [2023-12-02 19:39:52,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:39:52,263 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 715 transitions. [2023-12-02 19:39:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 19:39:52,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:52,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:52,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 19:39:52,264 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting system_initializeErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:52,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:52,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1619010373, now seen corresponding path program 1 times [2023-12-02 19:39:52,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:52,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87022228] [2023-12-02 19:39:52,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:52,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:53,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:53,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87022228] [2023-12-02 19:39:53,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87022228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:53,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:53,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 19:39:53,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145842941] [2023-12-02 19:39:53,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:53,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 19:39:53,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:53,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 19:39:53,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-02 19:39:53,209 INFO L87 Difference]: Start difference. First operand 526 states and 715 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:39:54,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:54,140 INFO L93 Difference]: Finished difference Result 577 states and 835 transitions. [2023-12-02 19:39:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 19:39:54,140 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2023-12-02 19:39:54,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:54,144 INFO L225 Difference]: With dead ends: 577 [2023-12-02 19:39:54,144 INFO L226 Difference]: Without dead ends: 577 [2023-12-02 19:39:54,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2023-12-02 19:39:54,145 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 362 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:54,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 978 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 19:39:54,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-12-02 19:39:54,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 526. [2023-12-02 19:39:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 322 states have (on average 1.6118012422360248) internal successors, (519), 435 states have internal predecessors, (519), 55 states have call successors, (55), 31 states have call predecessors, (55), 39 states have return successors, (140), 59 states have call predecessors, (140), 55 states have call successors, (140) [2023-12-02 19:39:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 714 transitions. [2023-12-02 19:39:54,170 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 714 transitions. Word has length 34 [2023-12-02 19:39:54,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:54,171 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 714 transitions. [2023-12-02 19:39:54,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:39:54,171 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 714 transitions. [2023-12-02 19:39:54,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 19:39:54,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:54,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:54,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 19:39:54,172 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting system_initializeErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:54,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:54,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1090804101, now seen corresponding path program 1 times [2023-12-02 19:39:54,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:54,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393361025] [2023-12-02 19:39:54,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:54,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:54,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:54,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393361025] [2023-12-02 19:39:54,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393361025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:54,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:54,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:39:54,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270995063] [2023-12-02 19:39:54,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:54,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:39:54,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:54,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:39:54,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:39:54,255 INFO L87 Difference]: Start difference. First operand 526 states and 714 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:54,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:54,446 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2023-12-02 19:39:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:39:54,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2023-12-02 19:39:54,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:54,450 INFO L225 Difference]: With dead ends: 524 [2023-12-02 19:39:54,450 INFO L226 Difference]: Without dead ends: 524 [2023-12-02 19:39:54,451 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 [2023-12-02 19:39:54,451 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 7 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:54,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 465 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:39:54,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-12-02 19:39:54,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2023-12-02 19:39:54,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 322 states have (on average 1.6055900621118013) internal successors, (517), 433 states have internal predecessors, (517), 55 states have call successors, (55), 31 states have call predecessors, (55), 39 states have return successors, (140), 59 states have call predecessors, (140), 55 states have call successors, (140) [2023-12-02 19:39:54,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 712 transitions. [2023-12-02 19:39:54,471 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 712 transitions. Word has length 36 [2023-12-02 19:39:54,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:54,471 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 712 transitions. [2023-12-02 19:39:54,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:54,472 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 712 transitions. [2023-12-02 19:39:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 19:39:54,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:54,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:54,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-02 19:39:54,473 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting system_initializeErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:54,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:54,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1090804100, now seen corresponding path program 1 times [2023-12-02 19:39:54,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:54,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097197959] [2023-12-02 19:39:54,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:54,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:54,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:54,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:54,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097197959] [2023-12-02 19:39:54,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097197959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:54,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:54,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:39:54,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138763566] [2023-12-02 19:39:54,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:54,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:39:54,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:54,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:39:54,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:39:54,596 INFO L87 Difference]: Start difference. First operand 524 states and 712 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:54,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:54,807 INFO L93 Difference]: Finished difference Result 522 states and 710 transitions. [2023-12-02 19:39:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:39:54,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2023-12-02 19:39:54,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:54,811 INFO L225 Difference]: With dead ends: 522 [2023-12-02 19:39:54,811 INFO L226 Difference]: Without dead ends: 522 [2023-12-02 19:39:54,811 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 [2023-12-02 19:39:54,812 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 5 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:54,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 471 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:39:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-12-02 19:39:54,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2023-12-02 19:39:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 322 states have (on average 1.5993788819875776) internal successors, (515), 431 states have internal predecessors, (515), 55 states have call successors, (55), 31 states have call predecessors, (55), 39 states have return successors, (140), 59 states have call predecessors, (140), 55 states have call successors, (140) [2023-12-02 19:39:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 710 transitions. [2023-12-02 19:39:54,837 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 710 transitions. Word has length 36 [2023-12-02 19:39:54,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:54,837 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 710 transitions. [2023-12-02 19:39:54,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 710 transitions. [2023-12-02 19:39:54,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 19:39:54,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:54,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:54,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-02 19:39:54,838 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ASNullErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:54,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:54,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1324675112, now seen corresponding path program 1 times [2023-12-02 19:39:54,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:54,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224409465] [2023-12-02 19:39:54,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:54,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:55,044 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:55,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:55,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224409465] [2023-12-02 19:39:55,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224409465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:55,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:55,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:39:55,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630433112] [2023-12-02 19:39:55,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:55,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:39:55,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:55,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:39:55,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:39:55,047 INFO L87 Difference]: Start difference. First operand 522 states and 710 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:55,508 INFO L93 Difference]: Finished difference Result 553 states and 759 transitions. [2023-12-02 19:39:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:39:55,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2023-12-02 19:39:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:55,513 INFO L225 Difference]: With dead ends: 553 [2023-12-02 19:39:55,513 INFO L226 Difference]: Without dead ends: 553 [2023-12-02 19:39:55,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:39:55,514 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 45 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:55,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1147 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:39:55,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-12-02 19:39:55,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 542. [2023-12-02 19:39:55,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 338 states have (on average 1.5917159763313609) internal successors, (538), 448 states have internal predecessors, (538), 56 states have call successors, (56), 33 states have call predecessors, (56), 42 states have return successors, (145), 60 states have call predecessors, (145), 56 states have call successors, (145) [2023-12-02 19:39:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 739 transitions. [2023-12-02 19:39:55,534 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 739 transitions. Word has length 44 [2023-12-02 19:39:55,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:55,534 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 739 transitions. [2023-12-02 19:39:55,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:55,534 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 739 transitions. [2023-12-02 19:39:55,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 19:39:55,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:55,535 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:55,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-02 19:39:55,535 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ASNullErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:55,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:55,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1324675111, now seen corresponding path program 1 times [2023-12-02 19:39:55,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:55,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248918499] [2023-12-02 19:39:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:55,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:55,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248918499] [2023-12-02 19:39:55,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248918499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:55,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:55,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:39:55,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353024816] [2023-12-02 19:39:55,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:55,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:39:55,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:55,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:39:55,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:39:55,832 INFO L87 Difference]: Start difference. First operand 542 states and 739 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:56,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:56,375 INFO L93 Difference]: Finished difference Result 552 states and 758 transitions. [2023-12-02 19:39:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:39:56,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2023-12-02 19:39:56,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:56,379 INFO L225 Difference]: With dead ends: 552 [2023-12-02 19:39:56,379 INFO L226 Difference]: Without dead ends: 552 [2023-12-02 19:39:56,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:39:56,379 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 42 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:56,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1199 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:39:56,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-12-02 19:39:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 542. [2023-12-02 19:39:56,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 338 states have (on average 1.5887573964497042) internal successors, (537), 448 states have internal predecessors, (537), 56 states have call successors, (56), 33 states have call predecessors, (56), 42 states have return successors, (145), 60 states have call predecessors, (145), 56 states have call successors, (145) [2023-12-02 19:39:56,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 738 transitions. [2023-12-02 19:39:56,397 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 738 transitions. Word has length 44 [2023-12-02 19:39:56,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:56,398 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 738 transitions. [2023-12-02 19:39:56,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 738 transitions. [2023-12-02 19:39:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 19:39:56,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:56,398 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:56,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-02 19:39:56,399 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:56,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:56,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1873386045, now seen corresponding path program 1 times [2023-12-02 19:39:56,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:56,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861220228] [2023-12-02 19:39:56,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:56,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:56,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861220228] [2023-12-02 19:39:56,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861220228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:56,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:56,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:39:56,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795534000] [2023-12-02 19:39:56,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:56,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:39:56,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:56,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:39:56,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:39:56,567 INFO L87 Difference]: Start difference. First operand 542 states and 738 transitions. Second operand has 7 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:57,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:57,086 INFO L93 Difference]: Finished difference Result 620 states and 849 transitions. [2023-12-02 19:39:57,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:39:57,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2023-12-02 19:39:57,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:57,091 INFO L225 Difference]: With dead ends: 620 [2023-12-02 19:39:57,091 INFO L226 Difference]: Without dead ends: 620 [2023-12-02 19:39:57,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:39:57,092 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 165 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:57,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 1066 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:39:57,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2023-12-02 19:39:57,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 553. [2023-12-02 19:39:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 346 states have (on average 1.583815028901734) internal successors, (548), 457 states have internal predecessors, (548), 57 states have call successors, (57), 34 states have call predecessors, (57), 44 states have return successors, (151), 61 states have call predecessors, (151), 57 states have call successors, (151) [2023-12-02 19:39:57,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 756 transitions. [2023-12-02 19:39:57,106 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 756 transitions. Word has length 45 [2023-12-02 19:39:57,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:57,107 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 756 transitions. [2023-12-02 19:39:57,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:57,107 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 756 transitions. [2023-12-02 19:39:57,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 19:39:57,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:57,107 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:57,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-02 19:39:57,108 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:57,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:57,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1873386046, now seen corresponding path program 1 times [2023-12-02 19:39:57,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:57,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874298769] [2023-12-02 19:39:57,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:57,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:57,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:57,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874298769] [2023-12-02 19:39:57,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874298769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:57,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:57,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:39:57,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084583702] [2023-12-02 19:39:57,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:57,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:39:57,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:57,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:39:57,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:39:57,317 INFO L87 Difference]: Start difference. First operand 553 states and 756 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:57,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:57,777 INFO L93 Difference]: Finished difference Result 562 states and 768 transitions. [2023-12-02 19:39:57,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:39:57,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2023-12-02 19:39:57,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:57,781 INFO L225 Difference]: With dead ends: 562 [2023-12-02 19:39:57,781 INFO L226 Difference]: Without dead ends: 562 [2023-12-02 19:39:57,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:39:57,782 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 39 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:57,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1178 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:39:57,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-12-02 19:39:57,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 553. [2023-12-02 19:39:57,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 346 states have (on average 1.5809248554913296) internal successors, (547), 457 states have internal predecessors, (547), 57 states have call successors, (57), 34 states have call predecessors, (57), 44 states have return successors, (151), 61 states have call predecessors, (151), 57 states have call successors, (151) [2023-12-02 19:39:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 755 transitions. [2023-12-02 19:39:57,801 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 755 transitions. Word has length 45 [2023-12-02 19:39:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:57,801 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 755 transitions. [2023-12-02 19:39:57,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:57,802 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 755 transitions. [2023-12-02 19:39:57,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 19:39:57,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:57,803 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:57,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-02 19:39:57,803 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ASIdleErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:57,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:57,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2065420395, now seen corresponding path program 1 times [2023-12-02 19:39:57,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:57,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010783154] [2023-12-02 19:39:57,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:57,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:57,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:57,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010783154] [2023-12-02 19:39:57,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010783154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:57,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:57,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:39:57,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671570173] [2023-12-02 19:39:57,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:57,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:39:57,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:57,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:39:57,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:39:57,969 INFO L87 Difference]: Start difference. First operand 553 states and 755 transitions. Second operand has 7 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:58,484 INFO L93 Difference]: Finished difference Result 612 states and 851 transitions. [2023-12-02 19:39:58,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:39:58,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2023-12-02 19:39:58,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:58,489 INFO L225 Difference]: With dead ends: 612 [2023-12-02 19:39:58,489 INFO L226 Difference]: Without dead ends: 612 [2023-12-02 19:39:58,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:39:58,490 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 113 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:58,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1089 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:39:58,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2023-12-02 19:39:58,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 562. [2023-12-02 19:39:58,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 353 states have (on average 1.5807365439093484) internal successors, (558), 464 states have internal predecessors, (558), 58 states have call successors, (58), 35 states have call predecessors, (58), 45 states have return successors, (154), 62 states have call predecessors, (154), 58 states have call successors, (154) [2023-12-02 19:39:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 770 transitions. [2023-12-02 19:39:58,510 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 770 transitions. Word has length 46 [2023-12-02 19:39:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:58,510 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 770 transitions. [2023-12-02 19:39:58,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:58,511 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 770 transitions. [2023-12-02 19:39:58,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 19:39:58,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:58,511 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:58,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-02 19:39:58,512 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ASIdleErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:58,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:58,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2065420394, now seen corresponding path program 1 times [2023-12-02 19:39:58,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:58,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855250386] [2023-12-02 19:39:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:58,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:58,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:58,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855250386] [2023-12-02 19:39:58,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855250386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:58,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:58,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:39:58,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348009362] [2023-12-02 19:39:58,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:58,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:39:58,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:58,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:39:58,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:39:58,788 INFO L87 Difference]: Start difference. First operand 562 states and 770 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:59,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:59,322 INFO L93 Difference]: Finished difference Result 622 states and 866 transitions. [2023-12-02 19:39:59,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:39:59,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2023-12-02 19:39:59,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:59,326 INFO L225 Difference]: With dead ends: 622 [2023-12-02 19:39:59,326 INFO L226 Difference]: Without dead ends: 622 [2023-12-02 19:39:59,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:39:59,327 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 52 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:59,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1162 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:39:59,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-12-02 19:39:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 605. [2023-12-02 19:39:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 386 states have (on average 1.5621761658031088) internal successors, (603), 499 states have internal predecessors, (603), 62 states have call successors, (62), 38 states have call predecessors, (62), 51 states have return successors, (174), 67 states have call predecessors, (174), 62 states have call successors, (174) [2023-12-02 19:39:59,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 839 transitions. [2023-12-02 19:39:59,345 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 839 transitions. Word has length 46 [2023-12-02 19:39:59,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:59,346 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 839 transitions. [2023-12-02 19:39:59,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:39:59,346 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 839 transitions. [2023-12-02 19:39:59,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 19:39:59,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:59,346 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:59,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-02 19:39:59,347 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ASStopErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:39:59,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash 385410619, now seen corresponding path program 1 times [2023-12-02 19:39:59,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:59,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481199800] [2023-12-02 19:39:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:59,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:59,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:59,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481199800] [2023-12-02 19:39:59,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481199800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:59,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:59,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:39:59,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527825855] [2023-12-02 19:39:59,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:59,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:39:59,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:59,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:39:59,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:39:59,653 INFO L87 Difference]: Start difference. First operand 605 states and 839 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:40:00,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:00,247 INFO L93 Difference]: Finished difference Result 666 states and 929 transitions. [2023-12-02 19:40:00,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:40:00,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2023-12-02 19:40:00,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:00,252 INFO L225 Difference]: With dead ends: 666 [2023-12-02 19:40:00,252 INFO L226 Difference]: Without dead ends: 666 [2023-12-02 19:40:00,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:40:00,253 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 67 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:00,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1157 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 19:40:00,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-12-02 19:40:00,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 650. [2023-12-02 19:40:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 420 states have (on average 1.5476190476190477) internal successors, (650), 537 states have internal predecessors, (650), 65 states have call successors, (65), 40 states have call predecessors, (65), 59 states have return successors, (190), 72 states have call predecessors, (190), 65 states have call successors, (190) [2023-12-02 19:40:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 905 transitions. [2023-12-02 19:40:00,274 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 905 transitions. Word has length 47 [2023-12-02 19:40:00,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:00,274 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 905 transitions. [2023-12-02 19:40:00,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:40:00,275 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 905 transitions. [2023-12-02 19:40:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 19:40:00,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:00,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:00,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-02 19:40:00,276 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ASStopErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:40:00,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:00,276 INFO L85 PathProgramCache]: Analyzing trace with hash 385410618, now seen corresponding path program 1 times [2023-12-02 19:40:00,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:00,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427378663] [2023-12-02 19:40:00,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:00,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:40:00,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:00,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427378663] [2023-12-02 19:40:00,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427378663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:00,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:00,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:40:00,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041857391] [2023-12-02 19:40:00,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:00,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:40:00,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:00,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:40:00,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:40:00,458 INFO L87 Difference]: Start difference. First operand 650 states and 905 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:40:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:01,031 INFO L93 Difference]: Finished difference Result 711 states and 998 transitions. [2023-12-02 19:40:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:40:01,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2023-12-02 19:40:01,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:01,037 INFO L225 Difference]: With dead ends: 711 [2023-12-02 19:40:01,037 INFO L226 Difference]: Without dead ends: 711 [2023-12-02 19:40:01,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:40:01,038 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 81 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:01,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1107 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:40:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2023-12-02 19:40:01,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 692. [2023-12-02 19:40:01,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 453 states have (on average 1.534216335540839) internal successors, (695), 573 states have internal predecessors, (695), 66 states have call successors, (66), 42 states have call predecessors, (66), 67 states have return successors, (202), 76 states have call predecessors, (202), 66 states have call successors, (202) [2023-12-02 19:40:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 963 transitions. [2023-12-02 19:40:01,059 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 963 transitions. Word has length 47 [2023-12-02 19:40:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:01,060 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 963 transitions. [2023-12-02 19:40:01,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:40:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 963 transitions. [2023-12-02 19:40:01,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 19:40:01,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:01,061 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:01,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-02 19:40:01,061 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:40:01,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2037623550, now seen corresponding path program 1 times [2023-12-02 19:40:01,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:01,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922075052] [2023-12-02 19:40:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:01,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:40:01,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:01,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922075052] [2023-12-02 19:40:01,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922075052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:01,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:01,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 19:40:01,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178766360] [2023-12-02 19:40:01,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:01,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:40:01,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:01,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:40:01,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:40:01,360 INFO L87 Difference]: Start difference. First operand 692 states and 963 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:40:01,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:01,759 INFO L93 Difference]: Finished difference Result 780 states and 1119 transitions. [2023-12-02 19:40:01,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 19:40:01,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2023-12-02 19:40:01,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:01,764 INFO L225 Difference]: With dead ends: 780 [2023-12-02 19:40:01,764 INFO L226 Difference]: Without dead ends: 780 [2023-12-02 19:40:01,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:40:01,764 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 43 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:01,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1819 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:40:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2023-12-02 19:40:01,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 756. [2023-12-02 19:40:01,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 505 states have (on average 1.5227722772277228) internal successors, (769), 626 states have internal predecessors, (769), 70 states have call successors, (70), 50 states have call predecessors, (70), 75 states have return successors, (218), 79 states have call predecessors, (218), 70 states have call successors, (218) [2023-12-02 19:40:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1057 transitions. [2023-12-02 19:40:01,781 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1057 transitions. Word has length 51 [2023-12-02 19:40:01,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:01,782 INFO L495 AbstractCegarLoop]: Abstraction has 756 states and 1057 transitions. [2023-12-02 19:40:01,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:40:01,782 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1057 transitions. [2023-12-02 19:40:01,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 19:40:01,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:01,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:01,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-02 19:40:01,783 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ASIdleErr12ASSERT_VIOLATIONMEMORY_LEAK === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:40:01,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:01,783 INFO L85 PathProgramCache]: Analyzing trace with hash 493514637, now seen corresponding path program 1 times [2023-12-02 19:40:01,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:01,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538004504] [2023-12-02 19:40:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:01,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:40:02,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:02,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538004504] [2023-12-02 19:40:02,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538004504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:02,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:02,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 19:40:02,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576658728] [2023-12-02 19:40:02,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:02,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 19:40:02,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:02,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 19:40:02,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:40:02,034 INFO L87 Difference]: Start difference. First operand 756 states and 1057 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:40:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:02,450 INFO L93 Difference]: Finished difference Result 792 states and 1116 transitions. [2023-12-02 19:40:02,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 19:40:02,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2023-12-02 19:40:02,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:02,455 INFO L225 Difference]: With dead ends: 792 [2023-12-02 19:40:02,455 INFO L226 Difference]: Without dead ends: 792 [2023-12-02 19:40:02,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-02 19:40:02,456 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 46 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:02,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 2109 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:40:02,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2023-12-02 19:40:02,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 777. [2023-12-02 19:40:02,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 519 states have (on average 1.510597302504817) internal successors, (784), 641 states have internal predecessors, (784), 74 states have call successors, (74), 51 states have call predecessors, (74), 78 states have return successors, (234), 84 states have call predecessors, (234), 74 states have call successors, (234) [2023-12-02 19:40:02,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1092 transitions. [2023-12-02 19:40:02,479 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1092 transitions. Word has length 50 [2023-12-02 19:40:02,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:02,480 INFO L495 AbstractCegarLoop]: Abstraction has 777 states and 1092 transitions. [2023-12-02 19:40:02,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:40:02,480 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1092 transitions. [2023-12-02 19:40:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 19:40:02,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:02,481 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:02,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-02 19:40:02,481 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ASStopErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:40:02,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:02,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1332924025, now seen corresponding path program 1 times [2023-12-02 19:40:02,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:02,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388590943] [2023-12-02 19:40:02,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:02,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:40:02,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:02,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388590943] [2023-12-02 19:40:02,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388590943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:02,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:02,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:40:02,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044354511] [2023-12-02 19:40:02,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:02,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:40:02,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:02,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:40:02,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:40:02,589 INFO L87 Difference]: Start difference. First operand 777 states and 1092 transitions. Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:40:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:02,941 INFO L93 Difference]: Finished difference Result 825 states and 1212 transitions. [2023-12-02 19:40:02,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:40:02,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2023-12-02 19:40:02,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:02,947 INFO L225 Difference]: With dead ends: 825 [2023-12-02 19:40:02,947 INFO L226 Difference]: Without dead ends: 825 [2023-12-02 19:40:02,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:02,948 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 315 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:02,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 351 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:40:02,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2023-12-02 19:40:02,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 776. [2023-12-02 19:40:02,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 519 states have (on average 1.5048169556840076) internal successors, (781), 640 states have internal predecessors, (781), 74 states have call successors, (74), 51 states have call predecessors, (74), 78 states have return successors, (234), 84 states have call predecessors, (234), 74 states have call successors, (234) [2023-12-02 19:40:02,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1089 transitions. [2023-12-02 19:40:02,972 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1089 transitions. Word has length 50 [2023-12-02 19:40:02,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:02,973 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 1089 transitions. [2023-12-02 19:40:02,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:40:02,973 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1089 transitions. [2023-12-02 19:40:02,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 19:40:02,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:02,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:02,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-02 19:40:02,974 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:40:02,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:02,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1956533854, now seen corresponding path program 1 times [2023-12-02 19:40:02,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:02,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623491315] [2023-12-02 19:40:02,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:02,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:40:03,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:03,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623491315] [2023-12-02 19:40:03,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623491315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:03,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:03,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:40:03,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102957675] [2023-12-02 19:40:03,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:03,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:40:03,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:03,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:40:03,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:40:03,062 INFO L87 Difference]: Start difference. First operand 776 states and 1089 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:40:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:03,255 INFO L93 Difference]: Finished difference Result 774 states and 1087 transitions. [2023-12-02 19:40:03,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:40:03,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2023-12-02 19:40:03,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:03,259 INFO L225 Difference]: With dead ends: 774 [2023-12-02 19:40:03,259 INFO L226 Difference]: Without dead ends: 774 [2023-12-02 19:40:03,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:03,260 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 33 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:03,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 621 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:40:03,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2023-12-02 19:40:03,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2023-12-02 19:40:03,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 519 states have (on average 1.5009633911368014) internal successors, (779), 638 states have internal predecessors, (779), 74 states have call successors, (74), 51 states have call predecessors, (74), 78 states have return successors, (234), 84 states have call predecessors, (234), 74 states have call successors, (234) [2023-12-02 19:40:03,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1087 transitions. [2023-12-02 19:40:03,276 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1087 transitions. Word has length 51 [2023-12-02 19:40:03,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:03,276 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1087 transitions. [2023-12-02 19:40:03,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:40:03,277 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1087 transitions. [2023-12-02 19:40:03,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 19:40:03,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:03,277 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:03,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-02 19:40:03,277 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ASStartErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:40:03,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:03,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1956533855, now seen corresponding path program 1 times [2023-12-02 19:40:03,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:03,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263910122] [2023-12-02 19:40:03,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:03,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:04,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:40:04,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:04,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263910122] [2023-12-02 19:40:04,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263910122] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:40:04,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874164052] [2023-12-02 19:40:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:04,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:40:04,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:40:04,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:40:04,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:40:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:04,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-02 19:40:04,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:40:04,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-02 19:40:04,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-12-02 19:40:04,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 19:40:04,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-12-02 19:40:04,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-02 19:40:04,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-12-02 19:40:04,670 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:40:04,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 72 [2023-12-02 19:40:04,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 21 [2023-12-02 19:40:04,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-02 19:40:04,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-12-02 19:40:04,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2023-12-02 19:40:04,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-12-02 19:40:04,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2023-12-02 19:40:04,769 INFO L349 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2023-12-02 19:40:04,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2023-12-02 19:40:04,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-12-02 19:40:04,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 32 [2023-12-02 19:40:04,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-12-02 19:40:04,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-02 19:40:04,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-02 19:40:05,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 20 [2023-12-02 19:40:05,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-12-02 19:40:05,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2023-12-02 19:40:05,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-12-02 19:40:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:40:05,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:40:05,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874164052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:05,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:40:05,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [16] total 25 [2023-12-02 19:40:05,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125230785] [2023-12-02 19:40:05,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:05,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 19:40:05,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:05,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 19:40:05,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2023-12-02 19:40:05,088 INFO L87 Difference]: Start difference. First operand 774 states and 1087 transitions. Second operand has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 13 states have internal predecessors, (40), 5 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:40:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:06,399 INFO L93 Difference]: Finished difference Result 827 states and 1235 transitions. [2023-12-02 19:40:06,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 19:40:06,399 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 13 states have internal predecessors, (40), 5 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2023-12-02 19:40:06,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:06,403 INFO L225 Difference]: With dead ends: 827 [2023-12-02 19:40:06,403 INFO L226 Difference]: Without dead ends: 827 [2023-12-02 19:40:06,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=1115, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 19:40:06,404 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 273 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:06,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 2157 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 19:40:06,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-12-02 19:40:06,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 779. [2023-12-02 19:40:06,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 522 states have (on average 1.4980842911877394) internal successors, (782), 643 states have internal predecessors, (782), 74 states have call successors, (74), 51 states have call predecessors, (74), 80 states have return successors, (236), 84 states have call predecessors, (236), 74 states have call successors, (236) [2023-12-02 19:40:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1092 transitions. [2023-12-02 19:40:06,425 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1092 transitions. Word has length 51 [2023-12-02 19:40:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:06,425 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 1092 transitions. [2023-12-02 19:40:06,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 13 states have internal predecessors, (40), 5 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:40:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1092 transitions. [2023-12-02 19:40:06,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 19:40:06,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:06,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:06,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:40:06,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:40:06,627 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ASStartErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:40:06,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:06,627 INFO L85 PathProgramCache]: Analyzing trace with hash 2041797168, now seen corresponding path program 1 times [2023-12-02 19:40:06,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:06,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906212570] [2023-12-02 19:40:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:06,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:40:06,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:06,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906212570] [2023-12-02 19:40:06,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906212570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:06,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:06,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:40:06,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060902754] [2023-12-02 19:40:06,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:06,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:40:06,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:06,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:40:06,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:40:06,703 INFO L87 Difference]: Start difference. First operand 779 states and 1092 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:40:06,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:06,958 INFO L93 Difference]: Finished difference Result 777 states and 1090 transitions. [2023-12-02 19:40:06,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:40:06,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 52 [2023-12-02 19:40:06,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:06,963 INFO L225 Difference]: With dead ends: 777 [2023-12-02 19:40:06,963 INFO L226 Difference]: Without dead ends: 777 [2023-12-02 19:40:06,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:06,964 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 33 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:06,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 619 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:40:06,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-12-02 19:40:06,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 777. [2023-12-02 19:40:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 522 states have (on average 1.4942528735632183) internal successors, (780), 641 states have internal predecessors, (780), 74 states have call successors, (74), 51 states have call predecessors, (74), 80 states have return successors, (236), 84 states have call predecessors, (236), 74 states have call successors, (236) [2023-12-02 19:40:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1090 transitions. [2023-12-02 19:40:06,981 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1090 transitions. Word has length 52 [2023-12-02 19:40:06,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:06,981 INFO L495 AbstractCegarLoop]: Abstraction has 777 states and 1090 transitions. [2023-12-02 19:40:06,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:40:06,981 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1090 transitions. [2023-12-02 19:40:06,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 19:40:06,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:06,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:06,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-02 19:40:06,983 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ASStartErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-12-02 19:40:06,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:06,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2041797169, now seen corresponding path program 1 times [2023-12-02 19:40:06,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:06,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703354821] [2023-12-02 19:40:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:06,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:40:07,029 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 19:40:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:40:07,082 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 19:40:07,082 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 19:40:07,083 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ASStartErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (161 of 162 remaining) [2023-12-02 19:40:07,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (160 of 162 remaining) [2023-12-02 19:40:07,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (159 of 162 remaining) [2023-12-02 19:40:07,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (158 of 162 remaining) [2023-12-02 19:40:07,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (157 of 162 remaining) [2023-12-02 19:40:07,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (156 of 162 remaining) [2023-12-02 19:40:07,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (155 of 162 remaining) [2023-12-02 19:40:07,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (154 of 162 remaining) [2023-12-02 19:40:07,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (153 of 162 remaining) [2023-12-02 19:40:07,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (152 of 162 remaining) [2023-12-02 19:40:07,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (151 of 162 remaining) [2023-12-02 19:40:07,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (150 of 162 remaining) [2023-12-02 19:40:07,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (149 of 162 remaining) [2023-12-02 19:40:07,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (148 of 162 remaining) [2023-12-02 19:40:07,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (147 of 162 remaining) [2023-12-02 19:40:07,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (146 of 162 remaining) [2023-12-02 19:40:07,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (145 of 162 remaining) [2023-12-02 19:40:07,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (144 of 162 remaining) [2023-12-02 19:40:07,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (143 of 162 remaining) [2023-12-02 19:40:07,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (142 of 162 remaining) [2023-12-02 19:40:07,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (141 of 162 remaining) [2023-12-02 19:40:07,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (140 of 162 remaining) [2023-12-02 19:40:07,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (139 of 162 remaining) [2023-12-02 19:40:07,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (138 of 162 remaining) [2023-12-02 19:40:07,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (137 of 162 remaining) [2023-12-02 19:40:07,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (136 of 162 remaining) [2023-12-02 19:40:07,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (135 of 162 remaining) [2023-12-02 19:40:07,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (134 of 162 remaining) [2023-12-02 19:40:07,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (133 of 162 remaining) [2023-12-02 19:40:07,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (132 of 162 remaining) [2023-12-02 19:40:07,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (131 of 162 remaining) [2023-12-02 19:40:07,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (130 of 162 remaining) [2023-12-02 19:40:07,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (129 of 162 remaining) [2023-12-02 19:40:07,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (128 of 162 remaining) [2023-12-02 19:40:07,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (127 of 162 remaining) [2023-12-02 19:40:07,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (126 of 162 remaining) [2023-12-02 19:40:07,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (125 of 162 remaining) [2023-12-02 19:40:07,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (124 of 162 remaining) [2023-12-02 19:40:07,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (123 of 162 remaining) [2023-12-02 19:40:07,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 162 remaining) [2023-12-02 19:40:07,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStopErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (121 of 162 remaining) [2023-12-02 19:40:07,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStopErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (120 of 162 remaining) [2023-12-02 19:40:07,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStopErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (119 of 162 remaining) [2023-12-02 19:40:07,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStopErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE (118 of 162 remaining) [2023-12-02 19:40:07,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location status_updateErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 162 remaining) [2023-12-02 19:40:07,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location status_updateErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 162 remaining) [2023-12-02 19:40:07,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location status_updateErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 162 remaining) [2023-12-02 19:40:07,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location status_updateErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 162 remaining) [2023-12-02 19:40:07,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 162 remaining) [2023-12-02 19:40:07,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 162 remaining) [2023-12-02 19:40:07,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 162 remaining) [2023-12-02 19:40:07,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 162 remaining) [2023-12-02 19:40:07,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 162 remaining) [2023-12-02 19:40:07,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 162 remaining) [2023-12-02 19:40:07,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 162 remaining) [2023-12-02 19:40:07,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 162 remaining) [2023-12-02 19:40:07,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 162 remaining) [2023-12-02 19:40:07,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 162 remaining) [2023-12-02 19:40:07,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 162 remaining) [2023-12-02 19:40:07,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 162 remaining) [2023-12-02 19:40:07,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 162 remaining) [2023-12-02 19:40:07,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 162 remaining) [2023-12-02 19:40:07,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 162 remaining) [2023-12-02 19:40:07,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 162 remaining) [2023-12-02 19:40:07,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 162 remaining) [2023-12-02 19:40:07,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 162 remaining) [2023-12-02 19:40:07,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 162 remaining) [2023-12-02 19:40:07,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 162 remaining) [2023-12-02 19:40:07,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 162 remaining) [2023-12-02 19:40:07,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 162 remaining) [2023-12-02 19:40:07,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 162 remaining) [2023-12-02 19:40:07,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 162 remaining) [2023-12-02 19:40:07,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 162 remaining) [2023-12-02 19:40:07,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 162 remaining) [2023-12-02 19:40:07,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 162 remaining) [2023-12-02 19:40:07,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 162 remaining) [2023-12-02 19:40:07,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 162 remaining) [2023-12-02 19:40:07,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 162 remaining) [2023-12-02 19:40:07,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 162 remaining) [2023-12-02 19:40:07,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 162 remaining) [2023-12-02 19:40:07,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 162 remaining) [2023-12-02 19:40:07,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 162 remaining) [2023-12-02 19:40:07,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 162 remaining) [2023-12-02 19:40:07,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 162 remaining) [2023-12-02 19:40:07,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 162 remaining) [2023-12-02 19:40:07,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 162 remaining) [2023-12-02 19:40:07,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 162 remaining) [2023-12-02 19:40:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 162 remaining) [2023-12-02 19:40:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 162 remaining) [2023-12-02 19:40:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 162 remaining) [2023-12-02 19:40:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 162 remaining) [2023-12-02 19:40:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 162 remaining) [2023-12-02 19:40:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 162 remaining) [2023-12-02 19:40:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 162 remaining) [2023-12-02 19:40:07,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 162 remaining) [2023-12-02 19:40:07,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 162 remaining) [2023-12-02 19:40:07,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 162 remaining) [2023-12-02 19:40:07,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 162 remaining) [2023-12-02 19:40:07,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 162 remaining) [2023-12-02 19:40:07,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 162 remaining) [2023-12-02 19:40:07,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 162 remaining) [2023-12-02 19:40:07,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 162 remaining) [2023-12-02 19:40:07,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 162 remaining) [2023-12-02 19:40:07,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 162 remaining) [2023-12-02 19:40:07,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr56REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 162 remaining) [2023-12-02 19:40:07,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr57REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 162 remaining) [2023-12-02 19:40:07,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr58REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 162 remaining) [2023-12-02 19:40:07,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 162 remaining) [2023-12-02 19:40:07,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 162 remaining) [2023-12-02 19:40:07,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 162 remaining) [2023-12-02 19:40:07,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 162 remaining) [2023-12-02 19:40:07,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 162 remaining) [2023-12-02 19:40:07,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr64REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 162 remaining) [2023-12-02 19:40:07,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr65REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 162 remaining) [2023-12-02 19:40:07,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 162 remaining) [2023-12-02 19:40:07,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 162 remaining) [2023-12-02 19:40:07,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr68REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 162 remaining) [2023-12-02 19:40:07,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr69REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 162 remaining) [2023-12-02 19:40:07,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 162 remaining) [2023-12-02 19:40:07,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 162 remaining) [2023-12-02 19:40:07,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 162 remaining) [2023-12-02 19:40:07,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 162 remaining) [2023-12-02 19:40:07,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 162 remaining) [2023-12-02 19:40:07,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 162 remaining) [2023-12-02 19:40:07,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 162 remaining) [2023-12-02 19:40:07,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 162 remaining) [2023-12-02 19:40:07,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 162 remaining) [2023-12-02 19:40:07,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 162 remaining) [2023-12-02 19:40:07,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 162 remaining) [2023-12-02 19:40:07,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 162 remaining) [2023-12-02 19:40:07,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASNullErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 162 remaining) [2023-12-02 19:40:07,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASNullErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 162 remaining) [2023-12-02 19:40:07,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 162 remaining) [2023-12-02 19:40:07,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 162 remaining) [2023-12-02 19:40:07,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 162 remaining) [2023-12-02 19:40:07,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 162 remaining) [2023-12-02 19:40:07,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 162 remaining) [2023-12-02 19:40:07,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 162 remaining) [2023-12-02 19:40:07,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 162 remaining) [2023-12-02 19:40:07,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 162 remaining) [2023-12-02 19:40:07,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 162 remaining) [2023-12-02 19:40:07,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 162 remaining) [2023-12-02 19:40:07,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 162 remaining) [2023-12-02 19:40:07,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 162 remaining) [2023-12-02 19:40:07,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr12ASSERT_VIOLATIONMEMORY_LEAK (17 of 162 remaining) [2023-12-02 19:40:07,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 162 remaining) [2023-12-02 19:40:07,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 162 remaining) [2023-12-02 19:40:07,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 162 remaining) [2023-12-02 19:40:07,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 162 remaining) [2023-12-02 19:40:07,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 162 remaining) [2023-12-02 19:40:07,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 162 remaining) [2023-12-02 19:40:07,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 162 remaining) [2023-12-02 19:40:07,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 162 remaining) [2023-12-02 19:40:07,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 162 remaining) [2023-12-02 19:40:07,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 162 remaining) [2023-12-02 19:40:07,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 162 remaining) [2023-12-02 19:40:07,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 162 remaining) [2023-12-02 19:40:07,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 162 remaining) [2023-12-02 19:40:07,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 162 remaining) [2023-12-02 19:40:07,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 162 remaining) [2023-12-02 19:40:07,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 162 remaining) [2023-12-02 19:40:07,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (0 of 162 remaining) [2023-12-02 19:40:07,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-02 19:40:07,106 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:07,110 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:40:07,134 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc81 [2023-12-02 19:40:07,135 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc81 [2023-12-02 19:40:07,135 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc81 [2023-12-02 19:40:07,135 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc81 [2023-12-02 19:40:07,136 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem82 [2023-12-02 19:40:07,136 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc81 [2023-12-02 19:40:07,136 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc81 [2023-12-02 19:40:07,139 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch76 could not be translated [2023-12-02 19:40:07,139 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem33 could not be translated [2023-12-02 19:40:07,140 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated [2023-12-02 19:40:07,140 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem35 [2023-12-02 19:40:07,140 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated [2023-12-02 19:40:07,140 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem35 [2023-12-02 19:40:07,141 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch76 could not be translated [2023-12-02 19:40:07,141 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc62 [2023-12-02 19:40:07,142 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch57 could not be translated [2023-12-02 19:40:07,142 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch57 could not be translated [2023-12-02 19:40:07,142 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc62 [2023-12-02 19:40:07,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:40:07 BoogieIcfgContainer [2023-12-02 19:40:07,152 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:40:07,152 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:40:07,152 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:40:07,153 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:40:07,153 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:39:37" (3/4) ... [2023-12-02 19:40:07,154 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 19:40:07,163 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc81 [2023-12-02 19:40:07,163 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc81 [2023-12-02 19:40:07,164 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc81 [2023-12-02 19:40:07,164 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem82 [2023-12-02 19:40:07,164 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc81 [2023-12-02 19:40:07,164 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc81 [2023-12-02 19:40:07,164 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc81 [2023-12-02 19:40:07,165 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch76 could not be translated [2023-12-02 19:40:07,166 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem33 could not be translated [2023-12-02 19:40:07,166 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated [2023-12-02 19:40:07,167 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem35 [2023-12-02 19:40:07,167 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem35 [2023-12-02 19:40:07,167 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated [2023-12-02 19:40:07,168 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch76 could not be translated [2023-12-02 19:40:07,168 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc62 [2023-12-02 19:40:07,168 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch57 could not be translated [2023-12-02 19:40:07,169 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc62 [2023-12-02 19:40:07,169 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch57 could not be translated [2023-12-02 19:40:07,206 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 19:40:07,206 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:40:07,207 INFO L158 Benchmark]: Toolchain (without parser) took 31823.66ms. Allocated memory was 163.6MB in the beginning and 343.9MB in the end (delta: 180.4MB). Free memory was 130.6MB in the beginning and 105.7MB in the end (delta: 25.0MB). Peak memory consumption was 205.2MB. Max. memory is 16.1GB. [2023-12-02 19:40:07,207 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:40:07,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.58ms. Allocated memory is still 163.6MB. Free memory was 129.9MB in the beginning and 104.9MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-02 19:40:07,208 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.27ms. Allocated memory is still 163.6MB. Free memory was 104.3MB in the beginning and 101.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 19:40:07,208 INFO L158 Benchmark]: Boogie Preprocessor took 77.75ms. Allocated memory is still 163.6MB. Free memory was 101.4MB in the beginning and 130.9MB in the end (delta: -29.5MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2023-12-02 19:40:07,208 INFO L158 Benchmark]: RCFGBuilder took 1035.32ms. Allocated memory is still 163.6MB. Free memory was 130.9MB in the beginning and 63.0MB in the end (delta: 68.0MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2023-12-02 19:40:07,209 INFO L158 Benchmark]: TraceAbstraction took 30067.09ms. Allocated memory was 163.6MB in the beginning and 343.9MB in the end (delta: 180.4MB). Free memory was 127.7MB in the beginning and 109.9MB in the end (delta: 17.9MB). Peak memory consumption was 197.5MB. Max. memory is 16.1GB. [2023-12-02 19:40:07,209 INFO L158 Benchmark]: Witness Printer took 53.94ms. Allocated memory is still 343.9MB. Free memory was 109.9MB in the beginning and 105.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 19:40:07,210 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 508.58ms. Allocated memory is still 163.6MB. Free memory was 129.9MB in the beginning and 104.9MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.27ms. Allocated memory is still 163.6MB. Free memory was 104.3MB in the beginning and 101.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.75ms. Allocated memory is still 163.6MB. Free memory was 101.4MB in the beginning and 130.9MB in the end (delta: -29.5MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * RCFGBuilder took 1035.32ms. Allocated memory is still 163.6MB. Free memory was 130.9MB in the beginning and 63.0MB in the end (delta: 68.0MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * TraceAbstraction took 30067.09ms. Allocated memory was 163.6MB in the beginning and 343.9MB in the end (delta: 180.4MB). Free memory was 127.7MB in the beginning and 109.9MB in the end (delta: 17.9MB). Peak memory consumption was 197.5MB. Max. memory is 16.1GB. * Witness Printer took 53.94ms. Allocated memory is still 343.9MB. Free memory was 109.9MB in the beginning and 105.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc81 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc81 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc81 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc81 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem82 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc81 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc81 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch76 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem33 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch76 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc62 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch57 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch57 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc62 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc81 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc81 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc81 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem82 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc81 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc81 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc81 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch76 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem33 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch76 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc62 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch57 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc62 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch57 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L779] user_t *user; [L975] user = malloc(sizeof(user_t)) [L976] CALL user_initialize() [L966] EXPR, FCALL calloc(1, sizeof(info_t)) VAL [user={-1:0}] [L966] user->info = calloc(1, sizeof(info_t)) VAL [user={-1:0}] [L967] user->message.id = 11 VAL [user={-1:0}] [L968] EXPR user->info VAL [user={-1:0}] [L968] user->info->is_valid = 0 [L969] user->status = AS_NULL VAL [user={-1:0}] [L970] user->user_id = 11 VAL [user={-1:0}] [L971] user->timeout = 3 [L976] RET user_initialize() [L977] event_t e = {0}; VAL [\old(argc)=78, argc=78, argv={83:80}, e={10:0}, user={-1:0}] [L978] e.primitive = _EVENT_START VAL [\old(argc)=78, argc=78, argv={83:80}, e={10:0}, user={-1:0}] [L979] CALL event_precess(&e) VAL [e={10:0}, user={-1:0}] [L943] EXPR user->status [L943] sys_state_t status = user->status; [L944] int rc = -1; VAL [e={10:0}, e={10:0}, rc=-1, status=1, user={-1:0}] [L945] COND TRUE status < AS_STATE_MAX [L947] case AS_NULL: VAL [e={10:0}, e={10:0}, rc=-1, status=1, user={-1:0}] [L948] CALL ASNull(e) VAL [e={10:0}, user={-1:0}] [L838] EXPR e->primitive [L838] e_primitive_t primitive = e->primitive; [L839] COND TRUE primitive == _EVENT_START VAL [e={10:0}, e={10:0}, primitive=0, user={-1:0}] [L840] CALL status_update(AS_START) VAL [\old(status)=2, user={-1:0}] [L814] COND TRUE status < AS_STATE_MAX VAL [\old(status)=2, status=2, user={-1:0}] [L815] EXPR user->status VAL [\old(status)=2, status=2, user={-1:0}] [L815] COND TRUE user->status != status [L816] user->status = status [L817] return 10; VAL [\old(status)=2, \result=10, status=2, user={-1:0}] [L840] RET status_update(AS_START) VAL [e={10:0}, e={10:0}, primitive=0, user={-1:0}] [L841] CALL system_initialize() VAL [user={-1:0}] [L829] event_t e = {0}; VAL [e={9:0}, user={-1:0}] [L830] EXPR user->info VAL [e={9:0}, user={-1:0}] [L830] EXPR user->info->is_valid VAL [e={9:0}, user={-1:0}] [L830] COND TRUE !user->info->is_valid [L831] e.primitive = _EVENT_CLOSE VAL [e={9:0}, user={-1:0}] [L835] CALL event_precess(&e) VAL [e={9:0}, user={-1:0}] [L943] EXPR user->status [L943] sys_state_t status = user->status; [L944] int rc = -1; VAL [e={9:0}, e={9:0}, rc=-1, status=2, user={-1:0}] [L945] COND TRUE status < AS_STATE_MAX [L947] case AS_NULL: [L950] case AS_START: VAL [e={9:0}, e={9:0}, rc=-1, status=2, user={-1:0}] [L951] CALL ASStart(e) VAL [e={9:0}, user={-1:0}] [L881] EXPR e->primitive [L881] e_primitive_t primitive = e->primitive; [L882] int rc = -1; [L884] case _EVENT_OPEN: [L898] case _EVENT_CLOSE: [L899] message_t *message = &user->message; [L900] EXPR, FCALL calloc(0, sizeof(*message)) VAL [e={9:0}, e={9:0}, message={-1:16}, primitive=3, rc=-1, user={-1:0}] [L900] message = calloc(0, sizeof(*message)) VAL [e={9:0}, e={9:0}, message={-2:0}, primitive=3, rc=-1, user={-1:0}] [L901] message->id = 3 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 973]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 358 locations, 162 error locations. Started 1 CEGAR loops. OverallTime: 30.0s, OverallIterations: 36, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4844 SdHoareTripleChecker+Valid, 16.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4821 mSDsluCounter, 36010 SdHoareTripleChecker+Invalid, 14.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26362 mSDsCounter, 875 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25624 IncrementalHoareTripleChecker+Invalid, 26499 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 875 mSolverCounterUnsat, 9648 mSDtfsCounter, 25624 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 399 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=779occurred in iteration=34, InterpolantAutomatonStates: 276, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 35 MinimizatonAttempts, 957 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 1232 NumberOfCodeBlocks, 1232 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1144 ConstructedInterpolants, 0 QuantifiedInterpolants, 5667 SizeOfPredicates, 16 NumberOfNonLiveVariables, 464 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 36 InterpolantComputations, 35 PerfectInterpolantSequences, 75/76 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-02 19:40:07,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7c74e1-cd14-48f6-a2f1-3a4c8a07a2b3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)