./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/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_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1924d97c04cfa5367e34b409aac63a4fd986c243eb4aa0af30578d8598fbdf71 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:41:39,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:41:39,110 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:41:39,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:41:39,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:41:39,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:41:39,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:41:39,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:41:39,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:41:39,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:41:39,142 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:41:39,142 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:41:39,143 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:41:39,143 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:41:39,144 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:41:39,144 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:41:39,145 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:41:39,145 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:41:39,146 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:41:39,146 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:41:39,147 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:41:39,148 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:41:39,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:41:39,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:41:39,149 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:41:39,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:41:39,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:41:39,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:41:39,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:41:39,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:41:39,152 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:41:39,152 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:41:39,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:41:39,153 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:41:39,153 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:41:39,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:41:39,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:41:39,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:41:39,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:41:39,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:41:39,154 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:41:39,155 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:41:39,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:41:39,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:41:39,156 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:41:39,156 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:41:39,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:41:39,156 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_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1924d97c04cfa5367e34b409aac63a4fd986c243eb4aa0af30578d8598fbdf71 [2023-12-02 19:41:39,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:41:39,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:41:39,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:41:39,395 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:41:39,396 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:41:39,397 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2023-12-02 19:41:42,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:41:42,334 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:41:42,334 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2023-12-02 19:41:42,344 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/data/f7bc40071/4a9ee2b8313b47edb89af67085a48127/FLAG08f474a83 [2023-12-02 19:41:42,720 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/data/f7bc40071/4a9ee2b8313b47edb89af67085a48127 [2023-12-02 19:41:42,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:41:42,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:41:42,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:41:42,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:41:42,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:41:42,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:41:42" (1/1) ... [2023-12-02 19:41:42,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@133d580f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:41:42, skipping insertion in model container [2023-12-02 19:41:42,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:41:42" (1/1) ... [2023-12-02 19:41:42,765 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:41:42,901 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c[642,655] [2023-12-02 19:41:42,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:41:42,958 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:41:42,969 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c[642,655] [2023-12-02 19:41:42,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:41:43,001 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:41:43,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:41:43 WrapperNode [2023-12-02 19:41:43,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:41:43,003 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:41:43,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:41:43,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:41:43,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:41:43" (1/1) ... [2023-12-02 19:41:43,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:41:43" (1/1) ... [2023-12-02 19:41:43,045 INFO L138 Inliner]: procedures = 24, calls = 22, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 204 [2023-12-02 19:41:43,045 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:41:43,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:41:43,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:41:43,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:41:43,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:41:43" (1/1) ... [2023-12-02 19:41:43,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:41:43" (1/1) ... [2023-12-02 19:41:43,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:41:43" (1/1) ... [2023-12-02 19:41:43,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:41:43" (1/1) ... [2023-12-02 19:41:43,063 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:41:43" (1/1) ... [2023-12-02 19:41:43,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:41:43" (1/1) ... [2023-12-02 19:41:43,070 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:41:43" (1/1) ... [2023-12-02 19:41:43,071 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:41:43" (1/1) ... [2023-12-02 19:41:43,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:41:43,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:41:43,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:41:43,076 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:41:43,077 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:41:43" (1/1) ... [2023-12-02 19:41:43,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:41:43,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:41:43,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:41:43,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:41:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:41:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-02 19:41:43,137 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-02 19:41:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:41:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-02 19:41:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-02 19:41:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-02 19:41:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-02 19:41:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:41:43,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:41:43,206 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:41:43,209 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:41:43,435 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:41:43,535 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:41:43,535 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 19:41:43,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:41:43 BoogieIcfgContainer [2023-12-02 19:41:43,537 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:41:43,540 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:41:43,540 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:41:43,543 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:41:43,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:41:42" (1/3) ... [2023-12-02 19:41:43,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f519be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:41:43, skipping insertion in model container [2023-12-02 19:41:43,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:41:43" (2/3) ... [2023-12-02 19:41:43,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f519be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:41:43, skipping insertion in model container [2023-12-02 19:41:43,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:41:43" (3/3) ... [2023-12-02 19:41:43,546 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2023-12-02 19:41:43,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:41:43,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:41:43,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:41:43,615 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@6b82ddc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:41:43,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:41:43,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 40 states have (on average 1.575) internal successors, (63), 43 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 19:41:43,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 19:41:43,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:41:43,627 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] [2023-12-02 19:41:43,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:41:43,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:41:43,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1434199698, now seen corresponding path program 1 times [2023-12-02 19:41:43,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:41:43,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316837802] [2023-12-02 19:41:43,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:41:43,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:41:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:41:43,919 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 19:41:43,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:41:43,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316837802] [2023-12-02 19:41:43,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316837802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:41:43,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:41:43,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:41:43,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956851718] [2023-12-02 19:41:43,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:41:43,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:41:43,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:41:43,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:41:43,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:41:43,964 INFO L87 Difference]: Start difference. First operand has 51 states, 40 states have (on average 1.575) internal successors, (63), 43 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:41:44,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:41:44,050 INFO L93 Difference]: Finished difference Result 140 states and 208 transitions. [2023-12-02 19:41:44,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:41:44,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-12-02 19:41:44,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:41:44,063 INFO L225 Difference]: With dead ends: 140 [2023-12-02 19:41:44,063 INFO L226 Difference]: Without dead ends: 86 [2023-12-02 19:41:44,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:41:44,071 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 47 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:41:44,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 125 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:41:44,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-02 19:41:44,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2023-12-02 19:41:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 69 states have internal predecessors, (97), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 19:41:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 113 transitions. [2023-12-02 19:41:44,119 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 113 transitions. Word has length 27 [2023-12-02 19:41:44,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:41:44,120 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 113 transitions. [2023-12-02 19:41:44,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:41:44,120 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 113 transitions. [2023-12-02 19:41:44,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 19:41:44,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:41:44,123 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] [2023-12-02 19:41:44,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:41:44,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:41:44,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:41:44,125 INFO L85 PathProgramCache]: Analyzing trace with hash -746349758, now seen corresponding path program 1 times [2023-12-02 19:41:44,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:41:44,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210670712] [2023-12-02 19:41:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:41:44,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:41:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:41:44,193 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 19:41:44,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:41:44,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210670712] [2023-12-02 19:41:44,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210670712] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:41:44,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:41:44,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:41:44,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206501703] [2023-12-02 19:41:44,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:41:44,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:41:44,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:41:44,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:41:44,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:41:44,198 INFO L87 Difference]: Start difference. First operand 82 states and 113 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:41:44,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:41:44,258 INFO L93 Difference]: Finished difference Result 238 states and 330 transitions. [2023-12-02 19:41:44,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:41:44,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2023-12-02 19:41:44,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:41:44,261 INFO L225 Difference]: With dead ends: 238 [2023-12-02 19:41:44,262 INFO L226 Difference]: Without dead ends: 157 [2023-12-02 19:41:44,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:41:44,265 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 48 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:41:44,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 110 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:41:44,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-02 19:41:44,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2023-12-02 19:41:44,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 128 states have (on average 1.390625) internal successors, (178), 129 states have internal predecessors, (178), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 19:41:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 208 transitions. [2023-12-02 19:41:44,290 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 208 transitions. Word has length 28 [2023-12-02 19:41:44,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:41:44,291 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 208 transitions. [2023-12-02 19:41:44,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:41:44,292 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 208 transitions. [2023-12-02 19:41:44,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 19:41:44,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:41:44,294 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 19:41:44,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:41:44,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:41:44,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:41:44,296 INFO L85 PathProgramCache]: Analyzing trace with hash 759913133, now seen corresponding path program 1 times [2023-12-02 19:41:44,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:41:44,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350635083] [2023-12-02 19:41:44,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:41:44,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:41:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:41:44,355 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 19:41:44,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:41:44,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350635083] [2023-12-02 19:41:44,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350635083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:41:44,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:41:44,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:41:44,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876524836] [2023-12-02 19:41:44,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:41:44,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:41:44,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:41:44,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:41:44,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:41:44,358 INFO L87 Difference]: Start difference. First operand 153 states and 208 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:41:44,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:41:44,422 INFO L93 Difference]: Finished difference Result 393 states and 536 transitions. [2023-12-02 19:41:44,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:41:44,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-12-02 19:41:44,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:41:44,426 INFO L225 Difference]: With dead ends: 393 [2023-12-02 19:41:44,426 INFO L226 Difference]: Without dead ends: 241 [2023-12-02 19:41:44,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:41:44,429 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 46 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:41:44,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 111 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:41:44,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-02 19:41:44,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 227. [2023-12-02 19:41:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 191 states have (on average 1.3769633507853403) internal successors, (263), 194 states have internal predecessors, (263), 22 states have call successors, (22), 14 states have call predecessors, (22), 13 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 19:41:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 305 transitions. [2023-12-02 19:41:44,461 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 305 transitions. Word has length 29 [2023-12-02 19:41:44,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:41:44,461 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 305 transitions. [2023-12-02 19:41:44,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:41:44,462 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 305 transitions. [2023-12-02 19:41:44,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 19:41:44,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:41:44,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2023-12-02 19:41:44,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:41:44,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:41:44,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:41:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash -629480206, now seen corresponding path program 1 times [2023-12-02 19:41:44,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:41:44,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635125794] [2023-12-02 19:41:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:41:44,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:41:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:41:44,554 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:41:44,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:41:44,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635125794] [2023-12-02 19:41:44,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635125794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:41:44,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:41:44,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:41:44,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342945563] [2023-12-02 19:41:44,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:41:44,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:41:44,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:41:44,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:41:44,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:41:44,557 INFO L87 Difference]: Start difference. First operand 227 states and 305 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:41:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:41:44,607 INFO L93 Difference]: Finished difference Result 390 states and 523 transitions. [2023-12-02 19:41:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:41:44,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2023-12-02 19:41:44,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:41:44,612 INFO L225 Difference]: With dead ends: 390 [2023-12-02 19:41:44,612 INFO L226 Difference]: Without dead ends: 232 [2023-12-02 19:41:44,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:41:44,616 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 32 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:41:44,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 145 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:41:44,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-02 19:41:44,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 221. [2023-12-02 19:41:44,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 185 states have (on average 1.345945945945946) internal successors, (249), 188 states have internal predecessors, (249), 22 states have call successors, (22), 14 states have call predecessors, (22), 13 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 19:41:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 291 transitions. [2023-12-02 19:41:44,644 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 291 transitions. Word has length 42 [2023-12-02 19:41:44,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:41:44,644 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 291 transitions. [2023-12-02 19:41:44,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:41:44,645 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 291 transitions. [2023-12-02 19:41:44,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 19:41:44,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:41:44,647 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2023-12-02 19:41:44,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:41:44,648 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:41:44,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:41:44,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1387179124, now seen corresponding path program 1 times [2023-12-02 19:41:44,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:41:44,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200750250] [2023-12-02 19:41:44,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:41:44,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:41:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:41:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 19:41:44,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:41:44,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200750250] [2023-12-02 19:41:44,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200750250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:41:44,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:41:44,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:41:44,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312829335] [2023-12-02 19:41:44,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:41:44,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:41:44,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:41:44,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:41:44,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:41:44,724 INFO L87 Difference]: Start difference. First operand 221 states and 291 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:41:44,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:41:44,782 INFO L93 Difference]: Finished difference Result 470 states and 615 transitions. [2023-12-02 19:41:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:41:44,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2023-12-02 19:41:44,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:41:44,786 INFO L225 Difference]: With dead ends: 470 [2023-12-02 19:41:44,786 INFO L226 Difference]: Without dead ends: 267 [2023-12-02 19:41:44,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:41:44,789 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 34 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:41:44,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 109 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:41:44,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-12-02 19:41:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2023-12-02 19:41:44,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 224 states have (on average 1.3035714285714286) internal successors, (292), 227 states have internal predecessors, (292), 26 states have call successors, (26), 17 states have call predecessors, (26), 16 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 19:41:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 342 transitions. [2023-12-02 19:41:44,819 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 342 transitions. Word has length 45 [2023-12-02 19:41:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:41:44,820 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 342 transitions. [2023-12-02 19:41:44,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:41:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 342 transitions. [2023-12-02 19:41:44,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 19:41:44,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:41:44,823 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, 1, 1] [2023-12-02 19:41:44,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:41:44,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:41:44,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:41:44,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1511264902, now seen corresponding path program 1 times [2023-12-02 19:41:44,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:41:44,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900739082] [2023-12-02 19:41:44,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:41:44,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:41:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:41:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-02 19:41:44,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:41:44,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900739082] [2023-12-02 19:41:44,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900739082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:41:44,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:41:44,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:41:44,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908805420] [2023-12-02 19:41:44,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:41:44,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:41:44,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:41:44,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:41:44,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:41:44,945 INFO L87 Difference]: Start difference. First operand 267 states and 342 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:41:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:41:45,038 INFO L93 Difference]: Finished difference Result 307 states and 389 transitions. [2023-12-02 19:41:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:41:45,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 46 [2023-12-02 19:41:45,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:41:45,042 INFO L225 Difference]: With dead ends: 307 [2023-12-02 19:41:45,043 INFO L226 Difference]: Without dead ends: 304 [2023-12-02 19:41:45,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 19:41:45,044 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 114 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:41:45,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 108 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:41:45,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-02 19:41:45,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 266. [2023-12-02 19:41:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 224 states have (on average 1.2946428571428572) internal successors, (290), 226 states have internal predecessors, (290), 25 states have call successors, (25), 17 states have call predecessors, (25), 16 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 19:41:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 339 transitions. [2023-12-02 19:41:45,071 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 339 transitions. Word has length 46 [2023-12-02 19:41:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:41:45,071 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 339 transitions. [2023-12-02 19:41:45,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:41:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 339 transitions. [2023-12-02 19:41:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 19:41:45,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:41:45,073 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, 1, 1, 1] [2023-12-02 19:41:45,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 19:41:45,073 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:41:45,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:41:45,074 INFO L85 PathProgramCache]: Analyzing trace with hash -395751625, now seen corresponding path program 1 times [2023-12-02 19:41:45,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:41:45,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890904198] [2023-12-02 19:41:45,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:41:45,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:41:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:41:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-02 19:41:45,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:41:45,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890904198] [2023-12-02 19:41:45,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890904198] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:41:45,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341801203] [2023-12-02 19:41:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:41:45,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:41:45,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:41:45,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:41:45,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:41:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:41:45,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:41:45,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:41:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:41:45,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:41:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-02 19:41:45,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341801203] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:41:45,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1444102372] [2023-12-02 19:41:45,684 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-12-02 19:41:45,684 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:41:45,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:41:45,693 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:41:45,693 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:41:47,367 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 62 for LOIs [2023-12-02 19:41:47,379 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify_threads with input of size 116 for LOIs [2023-12-02 19:41:48,600 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:41:54,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1444102372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:41:54,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:41:54,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [5, 4, 4] total 31 [2023-12-02 19:41:54,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559604292] [2023-12-02 19:41:54,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:41:54,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 19:41:54,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:41:54,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 19:41:54,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2023-12-02 19:41:54,699 INFO L87 Difference]: Start difference. First operand 266 states and 339 transitions. Second operand has 26 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:41:57,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:41:57,158 INFO L93 Difference]: Finished difference Result 572 states and 729 transitions. [2023-12-02 19:41:57,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 19:41:57,158 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2023-12-02 19:41:57,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:41:57,161 INFO L225 Difference]: With dead ends: 572 [2023-12-02 19:41:57,161 INFO L226 Difference]: Without dead ends: 307 [2023-12-02 19:41:57,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=165, Invalid=1167, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 19:41:57,163 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 25 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:41:57,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 388 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 19:41:57,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-02 19:41:57,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 294. [2023-12-02 19:41:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 249 states have (on average 1.2690763052208835) internal successors, (316), 251 states have internal predecessors, (316), 26 states have call successors, (26), 19 states have call predecessors, (26), 18 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 19:41:57,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 367 transitions. [2023-12-02 19:41:57,193 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 367 transitions. Word has length 47 [2023-12-02 19:41:57,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:41:57,193 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 367 transitions. [2023-12-02 19:41:57,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:41:57,194 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 367 transitions. [2023-12-02 19:41:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 19:41:57,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:41:57,195 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-12-02 19:41:57,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:41:57,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 19:41:57,396 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:41:57,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:41:57,396 INFO L85 PathProgramCache]: Analyzing trace with hash 402930623, now seen corresponding path program 1 times [2023-12-02 19:41:57,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:41:57,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788053533] [2023-12-02 19:41:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:41:57,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:41:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:41:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:41:57,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:41:57,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788053533] [2023-12-02 19:41:57,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788053533] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:41:57,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858928382] [2023-12-02 19:41:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:41:57,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:41:57,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:41:57,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:41:57,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:41:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:41:57,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:41:57,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:41:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:41:57,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:41:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 19:41:57,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858928382] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:41:57,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [165334473] [2023-12-02 19:41:57,857 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-12-02 19:41:57,857 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:41:57,858 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:41:57,858 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:41:57,858 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:41:59,469 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 44 for LOIs [2023-12-02 19:41:59,480 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify_threads with input of size 116 for LOIs [2023-12-02 19:42:00,164 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:42:06,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [165334473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:42:06,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:42:06,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [5, 4, 4] total 36 [2023-12-02 19:42:06,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168219043] [2023-12-02 19:42:06,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:42:06,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 19:42:06,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:42:06,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 19:42:06,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 19:42:06,088 INFO L87 Difference]: Start difference. First operand 294 states and 367 transitions. Second operand has 28 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:42:09,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:42:09,472 INFO L93 Difference]: Finished difference Result 544 states and 690 transitions. [2023-12-02 19:42:09,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-02 19:42:09,473 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2023-12-02 19:42:09,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:42:09,475 INFO L225 Difference]: With dead ends: 544 [2023-12-02 19:42:09,475 INFO L226 Difference]: Without dead ends: 316 [2023-12-02 19:42:09,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=276, Invalid=1980, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 19:42:09,478 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 44 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:42:09,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 441 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 19:42:09,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-12-02 19:42:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 249. [2023-12-02 19:42:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 211 states have (on average 1.2654028436018958) internal successors, (267), 213 states have internal predecessors, (267), 22 states have call successors, (22), 16 states have call predecessors, (22), 15 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 19:42:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 310 transitions. [2023-12-02 19:42:09,510 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 310 transitions. Word has length 55 [2023-12-02 19:42:09,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:42:09,510 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 310 transitions. [2023-12-02 19:42:09,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:42:09,511 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 310 transitions. [2023-12-02 19:42:09,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 19:42:09,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:42:09,512 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 19:42:09,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:42:09,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:42:09,712 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:42:09,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:42:09,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2014630829, now seen corresponding path program 1 times [2023-12-02 19:42:09,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:42:09,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515045297] [2023-12-02 19:42:09,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:09,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:42:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:42:09,840 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:42:09,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:42:09,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515045297] [2023-12-02 19:42:09,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515045297] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:42:09,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473510996] [2023-12-02 19:42:09,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:09,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:42:09,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:42:09,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:42:09,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:42:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:42:09,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:42:09,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:42:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:42:09,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:42:09,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473510996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:42:09,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:42:09,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 19:42:09,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213202317] [2023-12-02 19:42:09,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:42:09,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:42:09,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:42:09,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:42:09,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:42:09,943 INFO L87 Difference]: Start difference. First operand 249 states and 310 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:42:09,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:42:09,993 INFO L93 Difference]: Finished difference Result 425 states and 525 transitions. [2023-12-02 19:42:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:42:09,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 56 [2023-12-02 19:42:09,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:42:09,995 INFO L225 Difference]: With dead ends: 425 [2023-12-02 19:42:09,995 INFO L226 Difference]: Without dead ends: 181 [2023-12-02 19:42:09,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:42:09,997 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 27 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:42:09,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 124 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:42:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-02 19:42:10,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-12-02 19:42:10,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 153 states have (on average 1.2026143790849673) internal successors, (184), 154 states have internal predecessors, (184), 16 states have call successors, (16), 12 states have call predecessors, (16), 11 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 19:42:10,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 215 transitions. [2023-12-02 19:42:10,020 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 215 transitions. Word has length 56 [2023-12-02 19:42:10,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:42:10,020 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 215 transitions. [2023-12-02 19:42:10,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:42:10,021 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 215 transitions. [2023-12-02 19:42:10,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 19:42:10,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:42:10,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 19:42:10,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:42:10,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 19:42:10,222 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:42:10,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:42:10,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1678912636, now seen corresponding path program 1 times [2023-12-02 19:42:10,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:42:10,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878896546] [2023-12-02 19:42:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:10,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:42:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:42:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:42:10,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:42:10,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878896546] [2023-12-02 19:42:10,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878896546] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:42:10,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389611452] [2023-12-02 19:42:10,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:10,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:42:10,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:42:10,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:42:10,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:42:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:42:10,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:42:10,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:42:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:42:10,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:42:10,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389611452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:42:10,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:42:10,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-12-02 19:42:10,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208819588] [2023-12-02 19:42:10,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:42:10,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:42:10,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:42:10,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:42:10,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:42:10,377 INFO L87 Difference]: Start difference. First operand 181 states and 215 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:42:10,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:42:10,421 INFO L93 Difference]: Finished difference Result 283 states and 346 transitions. [2023-12-02 19:42:10,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:42:10,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 60 [2023-12-02 19:42:10,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:42:10,424 INFO L225 Difference]: With dead ends: 283 [2023-12-02 19:42:10,424 INFO L226 Difference]: Without dead ends: 168 [2023-12-02 19:42:10,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:42:10,425 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 40 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:42:10,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 122 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:42:10,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-02 19:42:10,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2023-12-02 19:42:10,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 140 states have (on average 1.1714285714285715) internal successors, (164), 140 states have internal predecessors, (164), 15 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 19:42:10,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 193 transitions. [2023-12-02 19:42:10,442 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 193 transitions. Word has length 60 [2023-12-02 19:42:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:42:10,442 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 193 transitions. [2023-12-02 19:42:10,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:42:10,443 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 193 transitions. [2023-12-02 19:42:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 19:42:10,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:42:10,444 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 19:42:10,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 19:42:10,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 19:42:10,645 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:42:10,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:42:10,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2106043070, now seen corresponding path program 1 times [2023-12-02 19:42:10,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:42:10,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666301344] [2023-12-02 19:42:10,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:10,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:42:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:42:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-02 19:42:10,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:42:10,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666301344] [2023-12-02 19:42:10,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666301344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:42:10,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:42:10,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:42:10,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733212620] [2023-12-02 19:42:10,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:42:10,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:42:10,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:42:10,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:42:10,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:42:10,698 INFO L87 Difference]: Start difference. First operand 166 states and 193 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:42:10,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:42:10,758 INFO L93 Difference]: Finished difference Result 264 states and 315 transitions. [2023-12-02 19:42:10,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:42:10,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-02 19:42:10,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:42:10,760 INFO L225 Difference]: With dead ends: 264 [2023-12-02 19:42:10,760 INFO L226 Difference]: Without dead ends: 164 [2023-12-02 19:42:10,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:42:10,761 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 61 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:42:10,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 115 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:42:10,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-02 19:42:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-12-02 19:42:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 138 states have (on average 1.1521739130434783) internal successors, (159), 138 states have internal predecessors, (159), 15 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 19:42:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 188 transitions. [2023-12-02 19:42:10,786 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 188 transitions. Word has length 60 [2023-12-02 19:42:10,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:42:10,787 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 188 transitions. [2023-12-02 19:42:10,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:42:10,787 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 188 transitions. [2023-12-02 19:42:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 19:42:10,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:42:10,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2023-12-02 19:42:10,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 19:42:10,789 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:42:10,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:42:10,789 INFO L85 PathProgramCache]: Analyzing trace with hash 525448093, now seen corresponding path program 1 times [2023-12-02 19:42:10,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:42:10,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739447644] [2023-12-02 19:42:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:10,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:42:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:42:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 19:42:10,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:42:10,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739447644] [2023-12-02 19:42:10,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739447644] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:42:10,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386372188] [2023-12-02 19:42:10,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:10,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:42:10,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:42:10,916 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:42:10,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 19:42:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:42:10,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:42:11,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:42:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 19:42:11,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:42:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 19:42:11,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386372188] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:42:11,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [132317017] [2023-12-02 19:42:11,244 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 19:42:11,244 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:42:11,244 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:42:11,245 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:42:11,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:42:13,580 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 19 for LOIs [2023-12-02 19:42:13,582 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 86 for LOIs [2023-12-02 19:42:13,621 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify_threads with input of size 10 for LOIs [2023-12-02 19:42:13,691 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:42:16,244 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9493#(and (<= 0 ~p_dw_pc~0) (= ~q_free~0 1) (= ~c_dr_pc~0 1) (not (= ~c_num_read~0 ~p_num_write~0)) (= ~q_read_ev~0 2) (= ~c_last_read~0 ~p_last_write~0))' at error location [2023-12-02 19:42:16,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:42:16,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:42:16,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2023-12-02 19:42:16,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513069553] [2023-12-02 19:42:16,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:42:16,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:42:16,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:42:16,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:42:16,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1649, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 19:42:16,247 INFO L87 Difference]: Start difference. First operand 164 states and 188 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 6 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 19:42:16,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:42:16,370 INFO L93 Difference]: Finished difference Result 347 states and 398 transitions. [2023-12-02 19:42:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:42:16,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 6 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 61 [2023-12-02 19:42:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:42:16,373 INFO L225 Difference]: With dead ends: 347 [2023-12-02 19:42:16,373 INFO L226 Difference]: Without dead ends: 344 [2023-12-02 19:42:16,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=157, Invalid=1649, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 19:42:16,375 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 133 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:42:16,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 371 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:42:16,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-12-02 19:42:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 220. [2023-12-02 19:42:16,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 185 states have (on average 1.162162162162162) internal successors, (215), 186 states have internal predecessors, (215), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 19:42:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 254 transitions. [2023-12-02 19:42:16,404 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 254 transitions. Word has length 61 [2023-12-02 19:42:16,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:42:16,404 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 254 transitions. [2023-12-02 19:42:16,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 6 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 19:42:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 254 transitions. [2023-12-02 19:42:16,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 19:42:16,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:42:16,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 19:42:16,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 19:42:16,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 19:42:16,607 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:42:16,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:42:16,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1811601580, now seen corresponding path program 2 times [2023-12-02 19:42:16,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:42:16,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893306266] [2023-12-02 19:42:16,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:16,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:42:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:42:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 19:42:16,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:42:16,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893306266] [2023-12-02 19:42:16,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893306266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:42:16,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:42:16,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:42:16,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082110356] [2023-12-02 19:42:16,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:42:16,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:42:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:42:16,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:42:16,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:42:16,638 INFO L87 Difference]: Start difference. First operand 220 states and 254 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:42:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:42:16,681 INFO L93 Difference]: Finished difference Result 344 states and 397 transitions. [2023-12-02 19:42:16,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:42:16,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 74 [2023-12-02 19:42:16,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:42:16,682 INFO L225 Difference]: With dead ends: 344 [2023-12-02 19:42:16,682 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 19:42:16,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:42:16,684 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 38 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:42:16,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 112 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:42:16,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 19:42:16,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 19:42:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:42:16,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 19:42:16,686 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2023-12-02 19:42:16,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:42:16,686 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 19:42:16,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:42:16,686 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 19:42:16,686 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 19:42:16,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 19:42:16,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 19:42:16,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 19:42:20,111 INFO L899 garLoopResultBuilder]: For program point L62(lines 62 67) no Hoare annotation was computed. [2023-12-02 19:42:20,111 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 51) no Hoare annotation was computed. [2023-12-02 19:42:20,111 INFO L899 garLoopResultBuilder]: For program point immediate_notify_threadsEXIT(lines 76 100) no Hoare annotation was computed. [2023-12-02 19:42:20,111 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 76 100) the Hoare annotation is: (let ((.cse20 (select |#memory_int| 1))) (let ((.cse8 (not (= ~p_last_write~0 ~q_buf_0~0))) (.cse0 (not (= ~a_t~0 0))) (.cse1 (< (+ ~p_last_write~0 2147483648) 0)) (.cse2 (not (= (select .cse20 0) 48))) (.cse3 (not (= ~p_num_write~0 1))) (.cse4 (not (= 2 (select |#length| 1)))) (.cse5 (not (= ~c_dr_pc~0 0))) (.cse6 (not (= (select |#valid| 3) 1))) (.cse7 (not (= (select |#length| 3) 12))) (.cse9 (not (= (select |#valid| 0) 0))) (.cse10 (not (= (select .cse20 1) 0))) (.cse11 (not (= (select |#valid| 1) 1))) (.cse12 (not (= 19 (select |#length| 2)))) (.cse17 (not (= ~q_write_ev~0 2))) (.cse13 (< |#StackHeapBarrier| 1)) (.cse14 (not (= ~p_dw_i~0 1))) (.cse15 (not (= (select |#valid| 2) 1))) (.cse18 (not (= ~q_free~0 1))) (.cse19 (not (= ~c_last_read~0 ~p_last_write~0))) (.cse16 (not (= 1 ~c_dr_i~0)))) (and (or .cse0 .cse1 (not (= |old(~c_dr_st~0)| 0)) .cse2 .cse3 .cse4 .cse5 .cse6 (not (= ~p_dw_pc~0 0)) .cse7 .cse8 .cse9 .cse10 (not (= ~c_num_read~0 0)) (not (= ~q_free~0 0)) .cse11 .cse12 (and (= ~c_dr_st~0 0) (= ~p_dw_st~0 1)) (not (= |old(~p_dw_st~0)| 1)) (not (= ~q_write_ev~0 1)) .cse13 .cse14 .cse15 (not (= ~c_last_read~0 0)) (< 2147483647 ~p_last_write~0) (not (= ~q_read_ev~0 2)) .cse16) (or .cse8 (not (= ~c_num_read~0 ~p_num_write~0)) (not (= ~c_dr_pc~0 1)) .cse17 .cse18 (<= 2 ~p_dw_st~0) .cse19 (< |old(~p_dw_st~0)| 2)) (or .cse0 .cse1 (not (= ~q_read_ev~0 1)) .cse2 .cse3 .cse4 .cse5 (not (= |old(~c_dr_st~0)| 1)) .cse6 .cse7 .cse9 (not (= |old(~p_dw_st~0)| 2)) .cse10 (not (= ~p_dw_pc~0 1)) .cse11 .cse12 (< 2147483647 ~q_buf_0~0) (not (= ~c_num_read~0 1)) (not (= ~c_last_read~0 ~q_buf_0~0)) .cse17 .cse13 .cse14 .cse15 .cse18 .cse19 (and (= 2 ~p_dw_st~0) (= ~c_dr_st~0 1)) .cse16)))) [2023-12-02 19:42:20,112 INFO L899 garLoopResultBuilder]: For program point L42-2(lines 42 51) no Hoare annotation was computed. [2023-12-02 19:42:20,112 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 70) no Hoare annotation was computed. [2023-12-02 19:42:20,112 INFO L899 garLoopResultBuilder]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2023-12-02 19:42:20,112 INFO L899 garLoopResultBuilder]: For program point L53(lines 41 55) no Hoare annotation was computed. [2023-12-02 19:42:20,112 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 48) no Hoare annotation was computed. [2023-12-02 19:42:20,112 INFO L899 garLoopResultBuilder]: For program point L72(lines 60 74) no Hoare annotation was computed. [2023-12-02 19:42:20,112 INFO L899 garLoopResultBuilder]: For program point exists_runnable_threadEXIT(lines 220 239) no Hoare annotation was computed. [2023-12-02 19:42:20,112 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 220 239) the Hoare annotation is: true [2023-12-02 19:42:20,112 INFO L895 garLoopResultBuilder]: At program point L192(line 192) the Hoare annotation is: false [2023-12-02 19:42:20,112 INFO L895 garLoopResultBuilder]: At program point L192-1(lines 160 195) the Hoare annotation is: (let ((.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse1 (= ~q_write_ev~0 2))) (or (and (= ~c_num_read~0 ~p_num_write~0) .cse0 (= ~q_free~0 1) .cse1 (= ~c_last_read~0 ~p_last_write~0)) (let ((.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= ~c_num_read~0 0) (<= ~q_buf_0~0 2147483647) (not (= |ULTIMATE.start_eval_~tmp___0~1#1| 0)) .cse0 (<= |ULTIMATE.start_eval_~tmp~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_eval_~tmp___0~1#1| 2147483648)) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (= ~q_free~0 0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= |ULTIMATE.start_eval_~tmp___0~1#1| 2147483647) (<= 0 (+ ~p_last_write~0 2147483648)) (= ~p_dw_pc~0 1) .cse1 (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) (= ~q_read_ev~0 2) (<= 0 (+ |ULTIMATE.start_eval_~tmp~1#1| 2147483648)) (= ~c_dr_pc~0 0) (not (= |ULTIMATE.start_eval_~tmp~1#1| 0)) (= 2 ~p_dw_st~0) (= ~p_dw_i~0 1) (= (select |#valid| 0) 0) (= ~p_num_write~0 1) (= (select |#valid| 2) 1) (= ~a_t~0 0) (= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= (select .cse2 0) 48) (= (select .cse2 1) 0) (= ~c_dr_st~0 1))))) [2023-12-02 19:42:20,112 INFO L899 garLoopResultBuilder]: For program point L250(line 250) no Hoare annotation was computed. [2023-12-02 19:42:20,112 INFO L899 garLoopResultBuilder]: For program point L118(lines 117 137) no Hoare annotation was computed. [2023-12-02 19:42:20,113 INFO L895 garLoopResultBuilder]: At program point L300(line 300) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse3 (= ~c_dr_pc~0 1)) (.cse4 (= ~q_write_ev~0 2)) (.cse5 (<= 2 ~p_dw_st~0))) (or (and (= ~c_num_read~0 ~p_num_write~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse5) (and (<= 1 |#StackHeapBarrier|) (<= 0 ~q_free~0) (= ~c_num_read~0 0) (<= ~p_dw_pc~0 1) .cse1 (<= 0 ~p_dw_pc~0) (= ~c_last_read~0 0) (<= 0 ~p_num_write~0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= ~p_num_write~0 1) (<= 0 (+ ~q_buf_0~0 2147483648)) .cse4 (<= ~q_free~0 1) (= ~q_read_ev~0 2) (= ~c_dr_pc~0 0) (= 2 ~p_dw_st~0) (= ~p_dw_i~0 1) (<= ~p_last_write~0 2147483647) (= ~a_t~0 0)) (and .cse1 (= (+ ~c_num_read~0 1) ~p_num_write~0) (= ~q_free~0 0) .cse3 .cse4 .cse5))) [2023-12-02 19:42:20,113 INFO L899 garLoopResultBuilder]: For program point L300-1(line 300) no Hoare annotation was computed. [2023-12-02 19:42:20,113 INFO L899 garLoopResultBuilder]: For program point do_write_p_returnLabel#1(lines 101 143) no Hoare annotation was computed. [2023-12-02 19:42:20,113 INFO L899 garLoopResultBuilder]: For program point L152(lines 152 156) no Hoare annotation was computed. [2023-12-02 19:42:20,113 INFO L899 garLoopResultBuilder]: For program point L119(lines 119 127) no Hoare annotation was computed. [2023-12-02 19:42:20,113 INFO L899 garLoopResultBuilder]: For program point start_simulation_returnLabel#1(lines 313 341) no Hoare annotation was computed. [2023-12-02 19:42:20,113 INFO L899 garLoopResultBuilder]: For program point L276(lines 276 283) no Hoare annotation was computed. [2023-12-02 19:42:20,113 INFO L899 garLoopResultBuilder]: For program point L161(lines 160 195) no Hoare annotation was computed. [2023-12-02 19:42:20,113 INFO L899 garLoopResultBuilder]: For program point do_read_c_returnLabel#1(lines 145 201) no Hoare annotation was computed. [2023-12-02 19:42:20,113 INFO L899 garLoopResultBuilder]: For program point L252(lines 252 256) no Hoare annotation was computed. [2023-12-02 19:42:20,113 INFO L899 garLoopResultBuilder]: For program point L252-1(lines 247 287) no Hoare annotation was computed. [2023-12-02 19:42:20,113 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 19:42:20,114 INFO L899 garLoopResultBuilder]: For program point L261(lines 261 268) no Hoare annotation was computed. [2023-12-02 19:42:20,114 INFO L899 garLoopResultBuilder]: For program point L162-1(lines 162 172) no Hoare annotation was computed. [2023-12-02 19:42:20,114 INFO L895 garLoopResultBuilder]: At program point L187(line 187) the Hoare annotation is: false [2023-12-02 19:42:20,114 INFO L895 garLoopResultBuilder]: At program point L179(line 179) the Hoare annotation is: (let ((.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse1 (= ~q_free~0 1)) (.cse2 (= ~q_write_ev~0 2)) (.cse3 (= ~c_last_read~0 ~p_last_write~0))) (or (let ((.cse4 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= ~q_buf_0~0 2147483647) (not (= |ULTIMATE.start_eval_~tmp___0~1#1| 0)) .cse0 (<= |ULTIMATE.start_eval_~tmp~1#1| 2147483647) (= |ULTIMATE.start_do_read_c_~a~0#1| ~q_buf_0~0) (<= 0 (+ |ULTIMATE.start_eval_~tmp___0~1#1| 2147483648)) .cse1 (= ~q_read_ev~0 1) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= ~c_num_read~0 1) (<= |ULTIMATE.start_eval_~tmp___0~1#1| 2147483647) (<= 0 (+ ~q_buf_0~0 2147483648)) (= ~p_dw_pc~0 1) .cse2 (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) (<= 0 (+ |ULTIMATE.start_eval_~tmp~1#1| 2147483648)) (= ~c_dr_pc~0 0) (not (= |ULTIMATE.start_eval_~tmp~1#1| 0)) (= 2 ~p_dw_st~0) (= ~p_dw_i~0 1) (= (select |#valid| 0) 0) (= ~p_num_write~0 1) (= (select |#valid| 2) 1) .cse3 (= ~a_t~0 0) (= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= (select .cse4 0) 48) (= (select .cse4 1) 0) (= ~c_dr_st~0 1))) (and (= ~c_num_read~0 ~p_num_write~0) .cse0 .cse1 (= ~c_dr_pc~0 1) .cse2 .cse3 (<= 2 ~p_dw_st~0)))) [2023-12-02 19:42:20,114 INFO L899 garLoopResultBuilder]: For program point L179-1(line 179) no Hoare annotation was computed. [2023-12-02 19:42:20,114 INFO L899 garLoopResultBuilder]: For program point eval_returnLabel#1(lines 240 293) no Hoare annotation was computed. [2023-12-02 19:42:20,114 INFO L899 garLoopResultBuilder]: For program point L106(lines 106 114) no Hoare annotation was computed. [2023-12-02 19:42:20,115 INFO L895 garLoopResultBuilder]: At program point L272(lines 247 287) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse6 (<= 1 |#StackHeapBarrier|)) (.cse7 (= ~c_num_read~0 0)) (.cse8 (= ~c_last_read~0 0)) (.cse9 (= 1 ~c_dr_i~0)) (.cse10 (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1)) (.cse11 (= ~q_read_ev~0 2)) (.cse12 (= ~c_dr_pc~0 0)) (.cse13 (= ~p_dw_i~0 1)) (.cse14 (= ~a_t~0 0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse3 (= ~c_dr_pc~0 1)) (.cse4 (= ~q_write_ev~0 2)) (.cse5 (<= 2 ~p_dw_st~0))) (or (and (= ~c_num_read~0 ~p_num_write~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse5) (let ((.cse15 (select |#memory_int| 1))) (and (= ~p_dw_pc~0 0) (= ~c_dr_st~0 0) (= ~p_num_write~0 0) (= (select |#length| 3) 12) .cse6 .cse7 (= ~q_buf_0~0 0) (= ~p_last_write~0 0) .cse2 .cse8 .cse9 .cse10 (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) .cse4 (= ~p_dw_st~0 0) (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) .cse11 .cse12 .cse13 (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) .cse14 (= (select .cse15 0) 48) (= (select .cse15 1) 0))) (and .cse6 (<= 0 ~q_free~0) .cse7 (<= ~p_dw_pc~0 1) .cse1 (<= 0 ~p_dw_pc~0) .cse8 (<= 0 ~p_num_write~0) .cse9 .cse10 (<= ~p_num_write~0 1) (<= 0 (+ ~q_buf_0~0 2147483648)) .cse4 (<= ~q_free~0 1) .cse11 .cse12 (= 2 ~p_dw_st~0) .cse13 (<= ~p_last_write~0 2147483647) .cse14) (and .cse1 (= (+ ~c_num_read~0 1) ~p_num_write~0) (= ~q_free~0 0) .cse3 .cse4 .cse5))) [2023-12-02 19:42:20,115 INFO L899 garLoopResultBuilder]: For program point L330(lines 330 334) no Hoare annotation was computed. [2023-12-02 19:42:20,115 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 19:42:20,115 INFO L895 garLoopResultBuilder]: At program point L248(line 248) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse6 (<= 1 |#StackHeapBarrier|)) (.cse7 (= ~c_num_read~0 0)) (.cse8 (= ~c_last_read~0 0)) (.cse9 (= 1 ~c_dr_i~0)) (.cse10 (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1)) (.cse11 (= ~q_read_ev~0 2)) (.cse12 (= ~c_dr_pc~0 0)) (.cse13 (= ~p_dw_i~0 1)) (.cse14 (= ~a_t~0 0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse3 (= ~c_dr_pc~0 1)) (.cse4 (= ~q_write_ev~0 2)) (.cse5 (<= 2 ~p_dw_st~0))) (or (and (= ~c_num_read~0 ~p_num_write~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse5) (let ((.cse15 (select |#memory_int| 1))) (and (= ~p_dw_pc~0 0) (= ~c_dr_st~0 0) (= ~p_num_write~0 0) (= (select |#length| 3) 12) .cse6 .cse7 (= ~q_buf_0~0 0) (= ~p_last_write~0 0) .cse2 .cse8 .cse9 .cse10 (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) .cse4 (= ~p_dw_st~0 0) (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) .cse11 .cse12 .cse13 (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) .cse14 (= (select .cse15 0) 48) (= (select .cse15 1) 0))) (and .cse6 (<= 0 ~q_free~0) .cse7 (<= ~p_dw_pc~0 1) .cse1 (<= 0 ~p_dw_pc~0) .cse8 (<= 0 ~p_num_write~0) .cse9 .cse10 (<= ~p_num_write~0 1) (<= 0 (+ ~q_buf_0~0 2147483648)) .cse4 (<= ~q_free~0 1) .cse11 .cse12 (= 2 ~p_dw_st~0) .cse13 (<= ~p_last_write~0 2147483647) .cse14) (and .cse1 (= (+ ~c_num_read~0 1) ~p_num_write~0) (= ~q_free~0 0) .cse3 .cse4 .cse5))) [2023-12-02 19:42:20,115 INFO L899 garLoopResultBuilder]: For program point L182(lines 182 194) no Hoare annotation was computed. [2023-12-02 19:42:20,116 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 157) no Hoare annotation was computed. [2023-12-02 19:42:20,116 INFO L899 garLoopResultBuilder]: For program point L257(lines 247 287) no Hoare annotation was computed. [2023-12-02 19:42:20,116 INFO L895 garLoopResultBuilder]: At program point L323-2(lines 323 335) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse6 (<= 1 |#StackHeapBarrier|)) (.cse7 (= ~c_num_read~0 0)) (.cse8 (= ~c_last_read~0 0)) (.cse9 (= 1 ~c_dr_i~0)) (.cse10 (= ~q_read_ev~0 2)) (.cse11 (= ~c_dr_pc~0 0)) (.cse12 (= ~p_dw_i~0 1)) (.cse13 (= ~a_t~0 0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse3 (= ~c_dr_pc~0 1)) (.cse4 (= ~q_write_ev~0 2)) (.cse5 (<= 2 ~p_dw_st~0))) (or (and (= ~c_num_read~0 ~p_num_write~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse5) (let ((.cse14 (select |#memory_int| 1))) (and (= ~p_dw_pc~0 0) (= ~c_dr_st~0 0) (= ~p_num_write~0 0) (= (select |#length| 3) 12) .cse6 .cse7 (= ~q_buf_0~0 0) (= ~p_last_write~0 0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 0) .cse2 .cse8 .cse9 (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) .cse4 (= ~p_dw_st~0 0) (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) .cse10 .cse11 .cse12 (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) .cse13 (= (select .cse14 0) 48) (= (select .cse14 1) 0))) (and .cse6 (<= 0 ~q_free~0) .cse7 (<= ~p_dw_pc~0 1) .cse1 (<= 0 ~p_dw_pc~0) .cse8 (<= 0 ~p_num_write~0) .cse9 (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= ~p_num_write~0 1) (<= 0 (+ ~q_buf_0~0 2147483648)) .cse4 (<= ~q_free~0 1) .cse10 .cse11 (= 2 ~p_dw_st~0) .cse12 (<= ~p_last_write~0 2147483647) .cse13) (and .cse1 (= (+ ~c_num_read~0 1) ~p_num_write~0) (= ~q_free~0 0) .cse3 .cse4 .cse5))) [2023-12-02 19:42:20,116 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 189) no Hoare annotation was computed. [2023-12-02 19:42:20,116 INFO L895 garLoopResultBuilder]: At program point L117-1(lines 117 137) the Hoare annotation is: (let ((.cse28 (select |#memory_int| 1))) (let ((.cse2 (= ~c_dr_pc~0 1)) (.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse4 (= ~q_free~0 0)) (.cse5 (= ~p_dw_pc~0 0)) (.cse6 (= (select |#length| 3) 12)) (.cse7 (<= 1 |#StackHeapBarrier|)) (.cse8 (= ~c_num_read~0 0)) (.cse9 (<= |ULTIMATE.start_eval_~tmp~1#1| 2147483647)) (.cse1 (= ~q_free~0 1)) (.cse10 (= ~c_last_read~0 0)) (.cse11 (= 1 ~c_dr_i~0)) (.cse12 (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1)) (.cse13 (= 2 (select |#length| 1))) (.cse14 (= (select |#valid| 3) 1)) (.cse3 (= ~q_write_ev~0 2)) (.cse15 (= (select |#valid| 1) 1)) (.cse16 (= 19 (select |#length| 2))) (.cse17 (= ~q_read_ev~0 2)) (.cse18 (<= 0 (+ |ULTIMATE.start_eval_~tmp~1#1| 2147483648))) (.cse19 (= ~c_dr_pc~0 0)) (.cse20 (not (= |ULTIMATE.start_eval_~tmp~1#1| 0))) (.cse21 (= ~p_dw_i~0 1)) (.cse22 (= (select |#valid| 0) 0)) (.cse23 (= (select |#valid| 2) 1)) (.cse24 (= ~a_t~0 0)) (.cse25 (= |ULTIMATE.start_eval_~tmp___1~0#1| 1)) (.cse26 (= (select .cse28 0) 48)) (.cse27 (= (select .cse28 1) 0))) (or (and (= ~c_num_read~0 ~p_num_write~0) (= ~c_dr_st~0 2) .cse0 .cse1 .cse2 .cse3) (and .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse4 .cse2 .cse3) (and .cse5 .cse6 .cse7 .cse8 .cse0 .cse9 (<= 0 ~p_dw_st~0) .cse10 .cse11 (<= ~p_dw_st~0 2) .cse12 .cse4 .cse13 .cse14 (<= 0 (+ ~q_buf_0~0 2147483648)) .cse3 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 (= ~p_num_write~0 1) .cse23 (<= ~p_last_write~0 2147483647) .cse24 .cse25 .cse26 .cse27) (and .cse5 (= ~c_dr_st~0 0) (= ~p_num_write~0 0) .cse6 .cse7 .cse8 (= ~q_buf_0~0 0) .cse9 (= ~p_last_write~0 0) .cse1 .cse10 .cse11 .cse12 .cse13 .cse14 .cse3 (= ~p_dw_st~0 1) .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse27)))) [2023-12-02 19:42:20,116 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 113) no Hoare annotation was computed. [2023-12-02 19:42:20,117 INFO L895 garLoopResultBuilder]: At program point L134(line 134) the Hoare annotation is: (let ((.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse1 (= ~q_free~0 0)) (.cse2 (= ~q_write_ev~0 1))) (or (and .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse1 (= ~c_dr_pc~0 1) .cse2) (let ((.cse3 (select |#memory_int| 1))) (and (= ~p_dw_pc~0 0) (= ~c_dr_st~0 0) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= ~c_num_read~0 0) (<= ~q_buf_0~0 2147483647) .cse0 (<= |ULTIMATE.start_eval_~tmp~1#1| 2147483647) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) .cse1 (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ ~q_buf_0~0 2147483648)) (= ~p_dw_st~0 1) (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) (= ~q_read_ev~0 2) (<= 0 (+ |ULTIMATE.start_eval_~tmp~1#1| 2147483648)) (= ~c_dr_pc~0 0) (not (= |ULTIMATE.start_eval_~tmp~1#1| 0)) (= ~p_dw_i~0 1) (= (select |#valid| 0) 0) (= ~p_num_write~0 1) (= (select |#valid| 2) 1) (= ~a_t~0 0) (= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= (select .cse3 0) 48) (= (select .cse3 1) 0) .cse2)))) [2023-12-02 19:42:20,117 INFO L899 garLoopResultBuilder]: For program point L134-1(line 134) no Hoare annotation was computed. [2023-12-02 19:42:20,117 INFO L899 garLoopResultBuilder]: For program point errorEXIT(lines 15 22) no Hoare annotation was computed. [2023-12-02 19:42:20,117 INFO L902 garLoopResultBuilder]: At program point ERROR(lines 15 22) the Hoare annotation is: true [2023-12-02 19:42:20,117 INFO L899 garLoopResultBuilder]: For program point errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-12-02 19:42:20,120 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:42:20,122 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:42:20,138 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-12-02 19:42:20,139 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-12-02 19:42:20,139 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-12-02 19:42:20,139 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-12-02 19:42:20,139 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-12-02 19:42:20,139 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-12-02 19:42:20,139 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-12-02 19:42:20,140 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-12-02 19:42:20,140 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-12-02 19:42:20,142 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-12-02 19:42:20,143 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-12-02 19:42:20,143 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-12-02 19:42:20,143 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-12-02 19:42:20,143 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-12-02 19:42:20,144 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-12-02 19:42:20,144 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-12-02 19:42:20,144 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-12-02 19:42:20,144 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-12-02 19:42:20,144 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-12-02 19:42:20,144 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-12-02 19:42:20,146 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-12-02 19:42:20,147 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-12-02 19:42:20,147 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-12-02 19:42:20,147 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-12-02 19:42:20,147 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-12-02 19:42:20,147 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-12-02 19:42:20,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-12-02 19:42:20,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-12-02 19:42:20,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-12-02 19:42:20,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-12-02 19:42:20,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-12-02 19:42:20,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 [2023-12-02 19:42:20,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-12-02 19:42:20,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-12-02 19:42:20,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-12-02 19:42:20,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-12-02 19:42:20,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-12-02 19:42:20,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-12-02 19:42:20,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-12-02 19:42:20,150 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-12-02 19:42:20,150 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-12-02 19:42:20,150 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-12-02 19:42:20,150 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-12-02 19:42:20,150 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-12-02 19:42:20,150 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-12-02 19:42:20,151 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 [2023-12-02 19:42:20,151 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-12-02 19:42:20,151 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-12-02 19:42:20,152 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-12-02 19:42:20,152 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 [2023-12-02 19:42:20,152 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-12-02 19:42:20,152 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 [2023-12-02 19:42:20,152 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-12-02 19:42:20,152 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-12-02 19:42:20,153 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-12-02 19:42:20,153 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 [2023-12-02 19:42:20,153 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-12-02 19:42:20,153 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-12-02 19:42:20,153 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-12-02 19:42:20,154 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-12-02 19:42:20,154 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-12-02 19:42:20,154 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-12-02 19:42:20,154 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 [2023-12-02 19:42:20,154 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-12-02 19:42:20,154 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-12-02 19:42:20,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:42:20 BoogieIcfgContainer [2023-12-02 19:42:20,155 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:42:20,155 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:42:20,155 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:42:20,156 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:42:20,156 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:41:43" (3/4) ... [2023-12-02 19:42:20,157 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 19:42:20,160 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure immediate_notify_threads [2023-12-02 19:42:20,160 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure exists_runnable_thread [2023-12-02 19:42:20,160 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure error [2023-12-02 19:42:20,167 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2023-12-02 19:42:20,168 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-12-02 19:42:20,169 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 19:42:20,169 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 19:42:20,295 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 19:42:20,296 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 19:42:20,296 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:42:20,297 INFO L158 Benchmark]: Toolchain (without parser) took 37572.61ms. Allocated memory was 161.5MB in the beginning and 578.8MB in the end (delta: 417.3MB). Free memory was 126.0MB in the beginning and 453.8MB in the end (delta: -327.8MB). Peak memory consumption was 91.7MB. Max. memory is 16.1GB. [2023-12-02 19:42:20,297 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 60.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:42:20,297 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.67ms. Allocated memory is still 161.5MB. Free memory was 126.0MB in the beginning and 113.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 19:42:20,298 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.76ms. Allocated memory is still 161.5MB. Free memory was 113.5MB in the beginning and 111.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:42:20,298 INFO L158 Benchmark]: Boogie Preprocessor took 28.66ms. Allocated memory is still 161.5MB. Free memory was 111.9MB in the beginning and 110.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:42:20,298 INFO L158 Benchmark]: RCFGBuilder took 461.72ms. Allocated memory is still 161.5MB. Free memory was 109.8MB in the beginning and 87.3MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 19:42:20,299 INFO L158 Benchmark]: TraceAbstraction took 36614.66ms. Allocated memory was 161.5MB in the beginning and 578.8MB in the end (delta: 417.3MB). Free memory was 86.8MB in the beginning and 460.2MB in the end (delta: -373.4MB). Peak memory consumption was 307.8MB. Max. memory is 16.1GB. [2023-12-02 19:42:20,299 INFO L158 Benchmark]: Witness Printer took 140.60ms. Allocated memory is still 578.8MB. Free memory was 460.2MB in the beginning and 453.8MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 19:42:20,301 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 60.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.67ms. Allocated memory is still 161.5MB. Free memory was 126.0MB in the beginning and 113.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.76ms. Allocated memory is still 161.5MB. Free memory was 113.5MB in the beginning and 111.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.66ms. Allocated memory is still 161.5MB. Free memory was 111.9MB in the beginning and 110.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 461.72ms. Allocated memory is still 161.5MB. Free memory was 109.8MB in the beginning and 87.3MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 36614.66ms. Allocated memory was 161.5MB in the beginning and 578.8MB in the end (delta: 417.3MB). Free memory was 86.8MB in the beginning and 460.2MB in the end (delta: -373.4MB). Peak memory consumption was 307.8MB. Max. memory is 16.1GB. * Witness Printer took 140.60ms. Allocated memory is still 578.8MB. Free memory was 460.2MB in the beginning and 453.8MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated * 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 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.5s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 696 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 689 mSDsluCounter, 2381 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1471 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2757 IncrementalHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 910 mSDtfsCounter, 2757 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 671 GetRequests, 526 SyntacticMatches, 6 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1637 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=294occurred in iteration=7, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 277 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 199 PreInvPairs, 240 NumberOfFragments, 1797 HoareAnnotationTreeSize, 199 FomulaSimplifications, 5930 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 13 FomulaSimplificationsInter, 6086 FormulaSimplificationTreeSizeReductionInter, 3.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 909 NumberOfCodeBlocks, 909 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1051 ConstructedInterpolants, 0 QuantifiedInterpolants, 2930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1087 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 21 InterpolantComputations, 10 PerfectInterpolantSequences, 229/304 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: OVERALL_TIME: 5.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 90, DAG_INTERPRETER_EARLY_EXITS: 7, TOOLS_POST_APPLICATIONS: 135, TOOLS_POST_TIME: 3.0s, TOOLS_POST_CALL_APPLICATIONS: 36, TOOLS_POST_CALL_TIME: 0.6s, TOOLS_POST_RETURN_APPLICATIONS: 30, TOOLS_POST_RETURN_TIME: 0.7s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 192, TOOLS_QUANTIFIERELIM_TIME: 4.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.4s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 281, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 36, DOMAIN_JOIN_TIME: 0.6s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 3, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 10, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 90, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 7, LOOP_SUMMARIZER_CACHE_MISSES: 7, LOOP_SUMMARIZER_OVERALL_TIME: 1.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 10, CALL_SUMMARIZER_APPLICATIONS: 30, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 2061, DAG_COMPRESSION_RETAINED_NODES: 238, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 323]: Loop Invariant Derived loop invariant: ((((((((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_pc == 1)) && (q_write_ev == 2)) || ((((c_dr_st == 2) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= p_dw_st))) || ((((((((((((((((p_dw_pc == 0) && (c_dr_st == 0)) && (p_num_write == 0)) && (c_num_read == 0)) && (q_buf_0 == 0)) && (p_last_write == 0)) && (kernel_st == 0)) && (q_free == 1)) && (c_last_read == 0)) && (1 == c_dr_i)) && (q_write_ev == 2)) && (p_dw_st == 0)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (p_dw_i == 1)) && (a_t == 0))) || (((((((((((((((((((0 <= q_free) && (c_num_read == 0)) && (p_dw_pc <= 1)) && (p_last_write == q_buf_0)) && (0 <= p_dw_pc)) && (c_last_read == 0)) && (0 <= p_num_write)) && (1 == c_dr_i)) && (kernel_st == 1)) && (p_num_write <= 1)) && (0 <= (q_buf_0 + 2147483648))) && (q_write_ev == 2)) && (q_free <= 1)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (2 == p_dw_st)) && (p_dw_i == 1)) && (p_last_write <= 2147483647)) && (a_t == 0))) || ((((((p_last_write == q_buf_0) && ((c_num_read + 1) == p_num_write)) && (q_free == 0)) && (c_dr_pc == 1)) && (q_write_ev == 2)) && (2 <= p_dw_st))) - InvariantResult [Line: 247]: Loop Invariant Derived loop invariant: ((((((((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_pc == 1)) && (q_write_ev == 2)) || ((((c_dr_st == 2) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= p_dw_st))) || (((((((((((((((p_dw_pc == 0) && (c_dr_st == 0)) && (p_num_write == 0)) && (c_num_read == 0)) && (q_buf_0 == 0)) && (p_last_write == 0)) && (q_free == 1)) && (c_last_read == 0)) && (1 == c_dr_i)) && (q_write_ev == 2)) && (p_dw_st == 0)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (p_dw_i == 1)) && (a_t == 0))) || ((((((((((((((((((0 <= q_free) && (c_num_read == 0)) && (p_dw_pc <= 1)) && (p_last_write == q_buf_0)) && (0 <= p_dw_pc)) && (c_last_read == 0)) && (0 <= p_num_write)) && (1 == c_dr_i)) && (p_num_write <= 1)) && (0 <= (q_buf_0 + 2147483648))) && (q_write_ev == 2)) && (q_free <= 1)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (2 == p_dw_st)) && (p_dw_i == 1)) && (p_last_write <= 2147483647)) && (a_t == 0))) || ((((((p_last_write == q_buf_0) && ((c_num_read + 1) == p_num_write)) && (q_free == 0)) && (c_dr_pc == 1)) && (q_write_ev == 2)) && (2 <= p_dw_st))) - InvariantResult [Line: 117]: Loop Invariant Derived loop invariant: (((((((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_pc == 1)) && (q_write_ev == 2)) || (((((p_last_write == q_buf_0) && ((c_num_read + 1) == p_num_write)) && (q_free == 0)) && (c_dr_pc == 1)) && (q_write_ev == 2))) || ((((((((((((((((p_dw_pc == 0) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (0 <= p_dw_st)) && (c_last_read == 0)) && (1 == c_dr_i)) && (p_dw_st <= 2)) && (q_free == 0)) && (0 <= (q_buf_0 + 2147483648))) && (q_write_ev == 2)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (p_dw_i == 1)) && (p_num_write == 1)) && (p_last_write <= 2147483647)) && (a_t == 0))) || (((((((((((((((p_dw_pc == 0) && (c_dr_st == 0)) && (p_num_write == 0)) && (c_num_read == 0)) && (q_buf_0 == 0)) && (p_last_write == 0)) && (q_free == 1)) && (c_last_read == 0)) && (1 == c_dr_i)) && (q_write_ev == 2)) && (p_dw_st == 1)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (p_dw_i == 1)) && (a_t == 0))) - InvariantResult [Line: 160]: Loop Invariant Derived loop invariant: ((((((c_num_read == p_num_write) && (p_last_write == q_buf_0)) && (q_free == 1)) && (q_write_ev == 2)) && (c_last_read == p_last_write)) || ((((((((((((((((c_num_read == 0) && (q_buf_0 <= 2147483647)) && (p_last_write == q_buf_0)) && (c_last_read == 0)) && (1 == c_dr_i)) && (q_free == 0)) && (0 <= (p_last_write + 2147483648))) && (p_dw_pc == 1)) && (q_write_ev == 2)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (2 == p_dw_st)) && (p_dw_i == 1)) && (p_num_write == 1)) && (a_t == 0)) && (c_dr_st == 1))) - InvariantResult [Line: 220]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-12-02 19:42:20,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a1d4dc-29f6-400d-ba4f-f6844d01a5d5/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 Result: TRUE