./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_2.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_7cfb68dd-e62e-4dac-a33f-a1984d420207/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb68dd-e62e-4dac-a33f-a1984d420207/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_7cfb68dd-e62e-4dac-a33f-a1984d420207/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb68dd-e62e-4dac-a33f-a1984d420207/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_2.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb68dd-e62e-4dac-a33f-a1984d420207/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_7cfb68dd-e62e-4dac-a33f-a1984d420207/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 5adc3402a12b42bc2aef7c382784898827eb467d1d3955bed162b3bd231708de --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:45:18,691 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:45:18,757 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb68dd-e62e-4dac-a33f-a1984d420207/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:45:18,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:45:18,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:45:18,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:45:18,789 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:45:18,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:45:18,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:45:18,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:45:18,791 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:45:18,792 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:45:18,793 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:45:18,793 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:45:18,794 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:45:18,794 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:45:18,795 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:45:18,795 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:45:18,796 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:45:18,796 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:45:18,797 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:45:18,797 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:45:18,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:45:18,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:45:18,799 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:45:18,800 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:45:18,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:45:18,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:45:18,801 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:45:18,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:45:18,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:45:18,803 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:45:18,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:45:18,803 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:45:18,804 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:45:18,804 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:45:18,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:45:18,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:45:18,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:45:18,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:45:18,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:45:18,805 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:45:18,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:45:18,806 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:45:18,806 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:45:18,806 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:45:18,806 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:45:18,807 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_7cfb68dd-e62e-4dac-a33f-a1984d420207/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb68dd-e62e-4dac-a33f-a1984d420207/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5adc3402a12b42bc2aef7c382784898827eb467d1d3955bed162b3bd231708de [2023-12-02 19:45:19,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:45:19,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:45:19,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:45:19,063 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:45:19,063 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:45:19,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb68dd-e62e-4dac-a33f-a1984d420207/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/systemc/pc_sfifo_2.cil-2.c [2023-12-02 19:45:21,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:45:22,007 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:45:22,007 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb68dd-e62e-4dac-a33f-a1984d420207/sv-benchmarks/c/systemc/pc_sfifo_2.cil-2.c [2023-12-02 19:45:22,015 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb68dd-e62e-4dac-a33f-a1984d420207/bin/utaipan-verify-nQ1chXbOIh/data/4ce2182ec/a5633eb3d2c8478ca5a2582c729189be/FLAG1eacfb97c [2023-12-02 19:45:22,027 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb68dd-e62e-4dac-a33f-a1984d420207/bin/utaipan-verify-nQ1chXbOIh/data/4ce2182ec/a5633eb3d2c8478ca5a2582c729189be [2023-12-02 19:45:22,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:45:22,032 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:45:22,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:45:22,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:45:22,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:45:22,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:45:22" (1/1) ... [2023-12-02 19:45:22,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f6d99a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:22, skipping insertion in model container [2023-12-02 19:45:22,041 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:45:22" (1/1) ... [2023-12-02 19:45:22,079 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:45:22,232 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_7cfb68dd-e62e-4dac-a33f-a1984d420207/sv-benchmarks/c/systemc/pc_sfifo_2.cil-2.c[643,656] [2023-12-02 19:45:22,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:45:22,294 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:45:22,307 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_7cfb68dd-e62e-4dac-a33f-a1984d420207/sv-benchmarks/c/systemc/pc_sfifo_2.cil-2.c[643,656] [2023-12-02 19:45:22,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:45:22,340 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:45:22,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:22 WrapperNode [2023-12-02 19:45:22,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:45:22,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:45:22,342 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:45:22,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:45:22,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:22" (1/1) ... [2023-12-02 19:45:22,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:22" (1/1) ... [2023-12-02 19:45:22,383 INFO L138 Inliner]: procedures = 29, calls = 32, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 190 [2023-12-02 19:45:22,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:45:22,384 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:45:22,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:45:22,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:45:22,393 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:22" (1/1) ... [2023-12-02 19:45:22,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:22" (1/1) ... [2023-12-02 19:45:22,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:22" (1/1) ... [2023-12-02 19:45:22,396 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:22" (1/1) ... [2023-12-02 19:45:22,401 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:22" (1/1) ... [2023-12-02 19:45:22,406 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:22" (1/1) ... [2023-12-02 19:45:22,408 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:22" (1/1) ... [2023-12-02 19:45:22,410 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:22" (1/1) ... [2023-12-02 19:45:22,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:45:22,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:45:22,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:45:22,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:45:22,415 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:22" (1/1) ... [2023-12-02 19:45:22,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:45:22,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb68dd-e62e-4dac-a33f-a1984d420207/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:45:22,443 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb68dd-e62e-4dac-a33f-a1984d420207/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:45:22,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb68dd-e62e-4dac-a33f-a1984d420207/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:45:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:45:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-02 19:45:22,472 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-02 19:45:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-02 19:45:22,472 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-02 19:45:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-02 19:45:22,472 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-02 19:45:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-02 19:45:22,472 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-02 19:45:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-02 19:45:22,473 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-02 19:45:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-02 19:45:22,473 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-02 19:45:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:45:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-02 19:45:22,474 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-02 19:45:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:45:22,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:45:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-02 19:45:22,474 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-02 19:45:22,554 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:45:22,556 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:45:22,817 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:45:22,925 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:45:22,925 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 19:45:22,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:45:22 BoogieIcfgContainer [2023-12-02 19:45:22,927 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:45:22,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:45:22,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:45:22,932 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:45:22,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:45:22" (1/3) ... [2023-12-02 19:45:22,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1288a3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:45:22, skipping insertion in model container [2023-12-02 19:45:22,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:45:22" (2/3) ... [2023-12-02 19:45:22,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1288a3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:45:22, skipping insertion in model container [2023-12-02 19:45:22,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:45:22" (3/3) ... [2023-12-02 19:45:22,935 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2.c [2023-12-02 19:45:22,950 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:45:22,950 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:45:22,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:45:23,001 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;@3de6312b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:45:23,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:45:23,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 53 states have internal predecessors, (71), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 19:45:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 19:45:23,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:45:23,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:45:23,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:45:23,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:45:23,018 INFO L85 PathProgramCache]: Analyzing trace with hash -844708263, now seen corresponding path program 1 times [2023-12-02 19:45:23,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:45:23,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131029679] [2023-12-02 19:45:23,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:23,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:45:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:45:23,296 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 19:45:23,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:45:23,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131029679] [2023-12-02 19:45:23,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131029679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:45:23,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:45:23,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:45:23,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354161405] [2023-12-02 19:45:23,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:45:23,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:45:23,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:45:23,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:45:23,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:45:23,338 INFO L87 Difference]: Start difference. First operand has 73 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 53 states have internal predecessors, (71), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 19:45:23,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:45:23,571 INFO L93 Difference]: Finished difference Result 204 states and 285 transitions. [2023-12-02 19:45:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:45:23,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 39 [2023-12-02 19:45:23,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:45:23,583 INFO L225 Difference]: With dead ends: 204 [2023-12-02 19:45:23,583 INFO L226 Difference]: Without dead ends: 132 [2023-12-02 19:45:23,587 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 19:45:23,591 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 157 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:45:23,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 222 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:45:23,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-02 19:45:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 124. [2023-12-02 19:45:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 86 states have (on average 1.3372093023255813) internal successors, (115), 89 states have internal predecessors, (115), 23 states have call successors, (23), 15 states have call predecessors, (23), 14 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 19:45:23,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 158 transitions. [2023-12-02 19:45:23,650 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 158 transitions. Word has length 39 [2023-12-02 19:45:23,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:45:23,651 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 158 transitions. [2023-12-02 19:45:23,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 19:45:23,651 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 158 transitions. [2023-12-02 19:45:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 19:45:23,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:45:23,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:45:23,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:45:23,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:45:23,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:45:23,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1777741402, now seen corresponding path program 1 times [2023-12-02 19:45:23,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:45:23,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971180862] [2023-12-02 19:45:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:23,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:45:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:45:23,833 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 19:45:23,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:45:23,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971180862] [2023-12-02 19:45:23,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971180862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:45:23,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:45:23,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:45:23,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574189978] [2023-12-02 19:45:23,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:45:23,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:45:23,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:45:23,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:45:23,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:45:23,838 INFO L87 Difference]: Start difference. First operand 124 states and 158 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 19:45:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:45:23,999 INFO L93 Difference]: Finished difference Result 355 states and 455 transitions. [2023-12-02 19:45:24,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:45:24,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 39 [2023-12-02 19:45:24,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:45:24,004 INFO L225 Difference]: With dead ends: 355 [2023-12-02 19:45:24,004 INFO L226 Difference]: Without dead ends: 236 [2023-12-02 19:45:24,005 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 19:45:24,007 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 151 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:45:24,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 222 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:45:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-02 19:45:24,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 221. [2023-12-02 19:45:24,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 153 states have (on average 1.2483660130718954) internal successors, (191), 156 states have internal predecessors, (191), 39 states have call successors, (39), 29 states have call predecessors, (39), 28 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-02 19:45:24,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 266 transitions. [2023-12-02 19:45:24,045 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 266 transitions. Word has length 39 [2023-12-02 19:45:24,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:45:24,045 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 266 transitions. [2023-12-02 19:45:24,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 19:45:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 266 transitions. [2023-12-02 19:45:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 19:45:24,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:45:24,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:45:24,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:45:24,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:45:24,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:45:24,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1855892103, now seen corresponding path program 1 times [2023-12-02 19:45:24,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:45:24,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343599123] [2023-12-02 19:45:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:24,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:45:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:45:24,078 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 19:45:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:45:24,125 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 19:45:24,125 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 19:45:24,127 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 19:45:24,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:45:24,131 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-02 19:45:24,134 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:45:24,171 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret7 could not be translated [2023-12-02 19:45:24,175 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret8 could not be translated [2023-12-02 19:45:24,178 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-12-02 19:45:24,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:45:24 BoogieIcfgContainer [2023-12-02 19:45:24,195 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:45:24,196 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:45:24,196 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:45:24,196 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:45:24,197 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:45:22" (3/4) ... [2023-12-02 19:45:24,197 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 19:45:24,212 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret7 could not be translated [2023-12-02 19:45:24,213 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret8 could not be translated [2023-12-02 19:45:24,215 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-12-02 19:45:24,272 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb68dd-e62e-4dac-a33f-a1984d420207/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 19:45:24,272 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:45:24,273 INFO L158 Benchmark]: Toolchain (without parser) took 2241.26ms. Allocated memory is still 148.9MB. Free memory was 110.7MB in the beginning and 81.5MB in the end (delta: 29.2MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2023-12-02 19:45:24,273 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 107.0MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:45:24,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.22ms. Allocated memory is still 148.9MB. Free memory was 110.7MB in the beginning and 113.0MB in the end (delta: -2.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 19:45:24,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.29ms. Allocated memory is still 148.9MB. Free memory was 113.0MB in the beginning and 110.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:45:24,274 INFO L158 Benchmark]: Boogie Preprocessor took 29.38ms. Allocated memory is still 148.9MB. Free memory was 110.9MB in the beginning and 109.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:45:24,275 INFO L158 Benchmark]: RCFGBuilder took 513.22ms. Allocated memory is still 148.9MB. Free memory was 109.5MB in the beginning and 82.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-12-02 19:45:24,275 INFO L158 Benchmark]: TraceAbstraction took 1265.91ms. Allocated memory is still 148.9MB. Free memory was 81.6MB in the beginning and 86.5MB in the end (delta: -4.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:45:24,276 INFO L158 Benchmark]: Witness Printer took 76.23ms. Allocated memory is still 148.9MB. Free memory was 86.5MB in the beginning and 81.5MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 19:45:24,278 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 107.0MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.22ms. Allocated memory is still 148.9MB. Free memory was 110.7MB in the beginning and 113.0MB in the end (delta: -2.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.29ms. Allocated memory is still 148.9MB. Free memory was 113.0MB in the beginning and 110.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.38ms. Allocated memory is still 148.9MB. Free memory was 110.9MB in the beginning and 109.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 513.22ms. Allocated memory is still 148.9MB. Free memory was 109.5MB in the beginning and 82.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1265.91ms. Allocated memory is still 148.9MB. Free memory was 81.6MB in the beginning and 86.5MB in the end (delta: -4.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 76.23ms. Allocated memory is still 148.9MB. Free memory was 86.5MB in the beginning and 81.5MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 20]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int q_buf_0 ; [L26] int q_free ; [L27] int q_read_ev ; [L28] int q_write_ev ; [L29] int q_req_up ; [L30] int q_ev ; [L51] int p_num_write ; [L52] int p_last_write ; [L53] int p_dw_st ; [L54] int p_dw_pc ; [L55] int p_dw_i ; [L56] int c_num_read ; [L57] int c_last_read ; [L58] int c_dr_st ; [L59] int c_dr_pc ; [L60] int c_dr_i ; [L164] static int a_t ; [L466] int __retres1 ; [L470] CALL init_model() [L452] q_free = 1 [L453] q_write_ev = 2 [L454] q_read_ev = q_write_ev [L455] p_num_write = 0 [L456] p_dw_pc = 0 [L457] p_dw_i = 1 [L458] c_num_read = 0 [L459] c_dr_pc = 0 [L460] c_dr_i = 1 [L470] RET init_model() [L471] CALL start_simulation() [L406] int kernel_st ; [L407] int tmp ; [L411] kernel_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, kernel_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L412] CALL update_channels() VAL [\old(q_ev)=0, \old(q_read_ev)=2, \old(q_req_up)=0, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L222] COND FALSE !((int )q_req_up == 1) [L412] RET update_channels() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, kernel_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L413] CALL init_threads() [L237] COND TRUE (int )p_dw_i == 1 [L238] p_dw_st = 0 [L242] COND TRUE (int )c_dr_i == 1 [L243] c_dr_st = 0 [L413] RET init_threads() [L414] CALL fire_delta_events() VAL [\old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L275] COND FALSE !((int )q_read_ev == 0) [L280] COND FALSE !((int )q_write_ev == 0) [L414] RET fire_delta_events() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, kernel_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L415] CALL activate_threads() VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L308] int tmp ; [L309] int tmp___0 ; VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L313] CALL, EXPR is_do_write_p_triggered() VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L62] int __retres1 ; VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L65] COND FALSE !((int )p_dw_pc == 1) VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L75] __retres1 = 0 VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, __retres1=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L77] return (__retres1); [L313] RET, EXPR is_do_write_p_triggered() VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L313] tmp = is_do_write_p_triggered() [L315] COND FALSE !(\read(tmp)) VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, tmp=0] [L321] CALL, EXPR is_do_read_c_triggered() VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L81] int __retres1 ; VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L84] COND FALSE !((int )c_dr_pc == 1) VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L94] __retres1 = 0 VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, __retres1=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L96] return (__retres1); [L321] RET, EXPR is_do_read_c_triggered() VAL [\old(c_dr_st)=0, \old(p_dw_st)=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, tmp=0] [L321] tmp___0 = is_do_read_c_triggered() [L323] COND FALSE !(\read(tmp___0)) [L415] RET activate_threads() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, kernel_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L416] CALL reset_delta_events() VAL [\old(q_read_ev)=2, \old(q_write_ev)=2, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L293] COND FALSE !((int )q_read_ev == 1) [L298] COND FALSE !((int )q_write_ev == 1) [L416] RET reset_delta_events() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, kernel_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L419] COND TRUE 1 [L422] kernel_st = 1 [L423] CALL eval() [L333] int tmp ; [L334] int tmp___0 ; [L335] int tmp___1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L339] COND TRUE 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L342] CALL, EXPR exists_runnable_thread() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L252] int __retres1 ; [L255] COND TRUE (int )p_dw_st == 0 [L256] __retres1 = 1 [L268] return (__retres1); [L342] RET, EXPR exists_runnable_thread() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L342] tmp___1 = exists_runnable_thread() [L344] COND TRUE \read(tmp___1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, tmp___1=1] [L349] COND TRUE (int )p_dw_st == 0 [L351] tmp = __VERIFIER_nondet_int() [L353] COND FALSE !(\read(tmp)) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, tmp=0, tmp___1=1] [L359] CALL error() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L20] reach_error() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 308 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 308 mSDsluCounter, 444 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 174 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 220 IncrementalHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 270 mSDtfsCounter, 220 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred in iteration=2, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-02 19:45:24,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb68dd-e62e-4dac-a33f-a1984d420207/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE