./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 9bd2c7ff 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_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/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_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ --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 0.2.3-dev-9bd2c7f [2023-11-19 04:18:09,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:18:09,681 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:18:09,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:18:09,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:18:09,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:18:09,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:18:09,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:18:09,723 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:18:09,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:18:09,724 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:18:09,724 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:18:09,725 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:18:09,726 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:18:09,726 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:18:09,727 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:18:09,727 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:18:09,728 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:18:09,728 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:18:09,729 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:18:09,730 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:18:09,731 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:18:09,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:18:09,732 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:18:09,733 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:18:09,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:18:09,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:18:09,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:18:09,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:18:09,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:18:09,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:18:09,736 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:18:09,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:18:09,737 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:18:09,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:18:09,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:18:09,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:18:09,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:18:09,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:18:09,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:18:09,740 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:18:09,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:18:09,741 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:18:09,741 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:18:09,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:18:09,743 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_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1924d97c04cfa5367e34b409aac63a4fd986c243eb4aa0af30578d8598fbdf71 [2023-11-19 04:18:10,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:18:10,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:18:10,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:18:10,098 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:18:10,098 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:18:10,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2023-11-19 04:18:13,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:18:13,582 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:18:13,583 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2023-11-19 04:18:13,593 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/data/2e09742a1/fa063ccd88354f2894db6e55fbc7a332/FLAGa03119001 [2023-11-19 04:18:13,622 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/data/2e09742a1/fa063ccd88354f2894db6e55fbc7a332 [2023-11-19 04:18:13,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:18:13,633 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:18:13,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:18:13,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:18:13,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:18:13,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:13,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35424d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13, skipping insertion in model container [2023-11-19 04:18:13,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:13,689 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:18:13,851 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_135b55fe-c4d7-488b-b6a2-67fb8027b26a/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c[642,655] [2023-11-19 04:18:13,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:18:13,906 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:18:13,917 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_135b55fe-c4d7-488b-b6a2-67fb8027b26a/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c[642,655] [2023-11-19 04:18:13,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:18:13,956 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:18:13,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13 WrapperNode [2023-11-19 04:18:13,956 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:18:13,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:18:13,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:18:13,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:18:13,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:13,975 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:14,001 INFO L138 Inliner]: procedures = 24, calls = 22, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 204 [2023-11-19 04:18:14,002 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:18:14,002 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:18:14,002 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:18:14,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:18:14,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:14,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:14,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:14,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:14,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:14,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:14,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:14,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:14,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:18:14,035 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:18:14,035 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:18:14,036 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:18:14,037 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:14,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:18:14,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:14,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:18:14,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:18:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:18:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-19 04:18:14,119 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-19 04:18:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:18:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-19 04:18:14,120 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-19 04:18:14,120 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-11-19 04:18:14,120 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-11-19 04:18:14,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:18:14,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:18:14,192 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:18:14,196 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:18:14,495 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:18:14,603 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:18:14,603 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 04:18:14,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:18:14 BoogieIcfgContainer [2023-11-19 04:18:14,609 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:18:14,612 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:18:14,612 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:18:14,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:18:14,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:18:13" (1/3) ... [2023-11-19 04:18:14,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6089e812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:18:14, skipping insertion in model container [2023-11-19 04:18:14,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13" (2/3) ... [2023-11-19 04:18:14,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6089e812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:18:14, skipping insertion in model container [2023-11-19 04:18:14,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:18:14" (3/3) ... [2023-11-19 04:18:14,625 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2023-11-19 04:18:14,646 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:18:14,646 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:18:14,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:18:14,704 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;@27ad4147, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:18:14,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:18:14,710 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) [2023-11-19 04:18:14,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:18:14,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:14,721 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] [2023-11-19 04:18:14,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:14,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:14,728 INFO L85 PathProgramCache]: Analyzing trace with hash -216375634, now seen corresponding path program 1 times [2023-11-19 04:18:14,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:14,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241442475] [2023-11-19 04:18:14,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:14,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:15,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:15,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241442475] [2023-11-19 04:18:15,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241442475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:15,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:15,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:18:15,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168290512] [2023-11-19 04:18:15,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:15,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:15,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:15,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:15,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:15,250 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) [2023-11-19 04:18:15,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:15,340 INFO L93 Difference]: Finished difference Result 140 states and 208 transitions. [2023-11-19 04:18:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:15,343 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 [2023-11-19 04:18:15,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:15,353 INFO L225 Difference]: With dead ends: 140 [2023-11-19 04:18:15,353 INFO L226 Difference]: Without dead ends: 86 [2023-11-19 04:18:15,357 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 [2023-11-19 04:18:15,361 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 [2023-11-19 04:18:15,362 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] [2023-11-19 04:18:15,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-19 04:18:15,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2023-11-19 04:18:15,411 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) [2023-11-19 04:18:15,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 113 transitions. [2023-11-19 04:18:15,418 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 113 transitions. Word has length 27 [2023-11-19 04:18:15,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:15,418 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 113 transitions. [2023-11-19 04:18:15,419 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) [2023-11-19 04:18:15,419 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 113 transitions. [2023-11-19 04:18:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:18:15,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:15,422 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] [2023-11-19 04:18:15,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:18:15,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:15,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:15,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1389714114, now seen corresponding path program 1 times [2023-11-19 04:18:15,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:15,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200481715] [2023-11-19 04:18:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:15,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:15,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:15,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200481715] [2023-11-19 04:18:15,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200481715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:15,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:15,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:18:15,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140003719] [2023-11-19 04:18:15,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:15,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:15,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:15,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:15,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:15,534 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) [2023-11-19 04:18:15,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:15,648 INFO L93 Difference]: Finished difference Result 238 states and 330 transitions. [2023-11-19 04:18:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:15,651 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 [2023-11-19 04:18:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:15,655 INFO L225 Difference]: With dead ends: 238 [2023-11-19 04:18:15,656 INFO L226 Difference]: Without dead ends: 157 [2023-11-19 04:18:15,661 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 [2023-11-19 04:18:15,665 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:15,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 110 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:15,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-19 04:18:15,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2023-11-19 04:18:15,700 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) [2023-11-19 04:18:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 208 transitions. [2023-11-19 04:18:15,704 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 208 transitions. Word has length 28 [2023-11-19 04:18:15,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:15,704 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 208 transitions. [2023-11-19 04:18:15,705 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) [2023-11-19 04:18:15,705 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 208 transitions. [2023-11-19 04:18:15,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 04:18:15,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:15,708 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] [2023-11-19 04:18:15,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:18:15,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:15,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:15,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1269386223, now seen corresponding path program 1 times [2023-11-19 04:18:15,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:15,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338256996] [2023-11-19 04:18:15,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:15,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:15,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:15,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338256996] [2023-11-19 04:18:15,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338256996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:15,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:15,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:18:15,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704404648] [2023-11-19 04:18:15,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:15,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:15,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:15,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:15,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:15,782 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) [2023-11-19 04:18:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:15,846 INFO L93 Difference]: Finished difference Result 393 states and 536 transitions. [2023-11-19 04:18:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:15,847 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 [2023-11-19 04:18:15,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:15,850 INFO L225 Difference]: With dead ends: 393 [2023-11-19 04:18:15,850 INFO L226 Difference]: Without dead ends: 241 [2023-11-19 04:18:15,852 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 [2023-11-19 04:18:15,853 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 [2023-11-19 04:18:15,854 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] [2023-11-19 04:18:15,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-11-19 04:18:15,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 227. [2023-11-19 04:18:15,911 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) [2023-11-19 04:18:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 305 transitions. [2023-11-19 04:18:15,919 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 305 transitions. Word has length 29 [2023-11-19 04:18:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:15,920 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 305 transitions. [2023-11-19 04:18:15,921 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) [2023-11-19 04:18:15,921 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 305 transitions. [2023-11-19 04:18:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 04:18:15,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:15,932 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] [2023-11-19 04:18:15,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:18:15,933 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:15,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash 226736750, now seen corresponding path program 1 times [2023-11-19 04:18:15,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:15,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953976013] [2023-11-19 04:18:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:15,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:18:16,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:16,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953976013] [2023-11-19 04:18:16,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953976013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:16,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:16,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:18:16,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44921158] [2023-11-19 04:18:16,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:16,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:16,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:16,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:16,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:16,044 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) [2023-11-19 04:18:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:16,095 INFO L93 Difference]: Finished difference Result 390 states and 523 transitions. [2023-11-19 04:18:16,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:16,096 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 [2023-11-19 04:18:16,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:16,100 INFO L225 Difference]: With dead ends: 390 [2023-11-19 04:18:16,102 INFO L226 Difference]: Without dead ends: 232 [2023-11-19 04:18:16,105 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 [2023-11-19 04:18:16,106 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 [2023-11-19 04:18:16,107 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] [2023-11-19 04:18:16,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-19 04:18:16,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 221. [2023-11-19 04:18:16,136 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) [2023-11-19 04:18:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 291 transitions. [2023-11-19 04:18:16,138 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 291 transitions. Word has length 42 [2023-11-19 04:18:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:16,139 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 291 transitions. [2023-11-19 04:18:16,139 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) [2023-11-19 04:18:16,140 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 291 transitions. [2023-11-19 04:18:16,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 04:18:16,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:16,142 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] [2023-11-19 04:18:16,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:18:16,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:16,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:16,143 INFO L85 PathProgramCache]: Analyzing trace with hash -858400330, now seen corresponding path program 1 times [2023-11-19 04:18:16,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:16,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210957208] [2023-11-19 04:18:16,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:16,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 04:18:16,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:16,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210957208] [2023-11-19 04:18:16,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210957208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:16,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:16,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:18:16,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805004677] [2023-11-19 04:18:16,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:16,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:16,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:16,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:16,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:16,209 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) [2023-11-19 04:18:16,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:16,264 INFO L93 Difference]: Finished difference Result 470 states and 615 transitions. [2023-11-19 04:18:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:16,265 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 [2023-11-19 04:18:16,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:16,267 INFO L225 Difference]: With dead ends: 470 [2023-11-19 04:18:16,268 INFO L226 Difference]: Without dead ends: 267 [2023-11-19 04:18:16,269 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 [2023-11-19 04:18:16,270 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 [2023-11-19 04:18:16,271 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] [2023-11-19 04:18:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-11-19 04:18:16,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2023-11-19 04:18:16,297 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) [2023-11-19 04:18:16,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 342 transitions. [2023-11-19 04:18:16,299 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 342 transitions. Word has length 45 [2023-11-19 04:18:16,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:16,300 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 342 transitions. [2023-11-19 04:18:16,300 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) [2023-11-19 04:18:16,300 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 342 transitions. [2023-11-19 04:18:16,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 04:18:16,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:16,302 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] [2023-11-19 04:18:16,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:18:16,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:16,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:16,304 INFO L85 PathProgramCache]: Analyzing trace with hash 617778564, now seen corresponding path program 1 times [2023-11-19 04:18:16,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:16,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816681135] [2023-11-19 04:18:16,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:16,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:16,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 04:18:16,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:16,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816681135] [2023-11-19 04:18:16,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816681135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:16,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:16,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:18:16,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642376368] [2023-11-19 04:18:16,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:16,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:18:16,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:16,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:18:16,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:18:16,417 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) [2023-11-19 04:18:16,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:16,555 INFO L93 Difference]: Finished difference Result 307 states and 389 transitions. [2023-11-19 04:18:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:18:16,556 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 [2023-11-19 04:18:16,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:16,559 INFO L225 Difference]: With dead ends: 307 [2023-11-19 04:18:16,559 INFO L226 Difference]: Without dead ends: 304 [2023-11-19 04:18:16,560 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 [2023-11-19 04:18:16,561 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:16,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 108 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:16,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-19 04:18:16,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 266. [2023-11-19 04:18:16,635 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) [2023-11-19 04:18:16,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 339 transitions. [2023-11-19 04:18:16,637 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 339 transitions. Word has length 46 [2023-11-19 04:18:16,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:16,638 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 339 transitions. [2023-11-19 04:18:16,638 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) [2023-11-19 04:18:16,638 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 339 transitions. [2023-11-19 04:18:16,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 04:18:16,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:16,640 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] [2023-11-19 04:18:16,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:18:16,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:16,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:16,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1970942969, now seen corresponding path program 1 times [2023-11-19 04:18:16,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:16,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254849667] [2023-11-19 04:18:16,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:16,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 04:18:16,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:16,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254849667] [2023-11-19 04:18:16,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254849667] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:16,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658579879] [2023-11-19 04:18:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:16,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:16,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:16,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:16,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:18:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:16,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 04:18:16,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:17,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:18:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 04:18:17,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658579879] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:18:17,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1440483925] [2023-11-19 04:18:17,429 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-11-19 04:18:17,430 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:18:17,434 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:18:17,439 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:18:17,440 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:18:19,825 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 62 for LOIs [2023-11-19 04:18:19,847 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify_threads with input of size 116 for LOIs [2023-11-19 04:18:21,134 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:18:29,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1440483925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:29,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:18:29,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 4, 4] total 31 [2023-11-19 04:18:29,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846593277] [2023-11-19 04:18:29,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:29,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 04:18:29,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:29,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 04:18:29,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2023-11-19 04:18:29,079 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) [2023-11-19 04:18:31,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:31,812 INFO L93 Difference]: Finished difference Result 572 states and 729 transitions. [2023-11-19 04:18:31,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-19 04:18:31,812 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 [2023-11-19 04:18:31,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:31,817 INFO L225 Difference]: With dead ends: 572 [2023-11-19 04:18:31,817 INFO L226 Difference]: Without dead ends: 307 [2023-11-19 04:18:31,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=165, Invalid=1167, Unknown=0, NotChecked=0, Total=1332 [2023-11-19 04:18:31,819 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 25 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:31,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 388 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 04:18:31,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-19 04:18:31,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 294. [2023-11-19 04:18:31,852 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) [2023-11-19 04:18:31,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 367 transitions. [2023-11-19 04:18:31,856 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 367 transitions. Word has length 47 [2023-11-19 04:18:31,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:31,857 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 367 transitions. [2023-11-19 04:18:31,857 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) [2023-11-19 04:18:31,857 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 367 transitions. [2023-11-19 04:18:31,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 04:18:31,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:31,861 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] [2023-11-19 04:18:31,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:32,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 04:18:32,070 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:32,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:32,070 INFO L85 PathProgramCache]: Analyzing trace with hash -473088383, now seen corresponding path program 1 times [2023-11-19 04:18:32,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:32,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670052929] [2023-11-19 04:18:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:32,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:18:32,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:32,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670052929] [2023-11-19 04:18:32,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670052929] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:32,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842861732] [2023-11-19 04:18:32,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:32,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:32,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:32,270 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:32,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:18:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:32,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 04:18:32,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:18:32,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:18:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:18:32,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842861732] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:18:32,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1147747238] [2023-11-19 04:18:32,652 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-11-19 04:18:32,653 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:18:32,654 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:18:32,655 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:18:32,655 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:18:34,898 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 44 for LOIs [2023-11-19 04:18:34,910 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify_threads with input of size 116 for LOIs [2023-11-19 04:18:35,755 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:18:43,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1147747238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:43,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:18:43,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [5, 4, 4] total 36 [2023-11-19 04:18:43,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810189247] [2023-11-19 04:18:43,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:43,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-19 04:18:43,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:43,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-19 04:18:43,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2023-11-19 04:18:43,876 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) [2023-11-19 04:18:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:47,948 INFO L93 Difference]: Finished difference Result 544 states and 690 transitions. [2023-11-19 04:18:47,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-19 04:18:47,957 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 [2023-11-19 04:18:47,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:47,962 INFO L225 Difference]: With dead ends: 544 [2023-11-19 04:18:47,962 INFO L226 Difference]: Without dead ends: 316 [2023-11-19 04:18:47,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=276, Invalid=1980, Unknown=0, NotChecked=0, Total=2256 [2023-11-19 04:18:47,965 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 44 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:47,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 441 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 04:18:47,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-19 04:18:47,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 249. [2023-11-19 04:18:47,999 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) [2023-11-19 04:18:48,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 310 transitions. [2023-11-19 04:18:48,001 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 310 transitions. Word has length 55 [2023-11-19 04:18:48,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:48,001 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 310 transitions. [2023-11-19 04:18:48,002 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) [2023-11-19 04:18:48,002 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 310 transitions. [2023-11-19 04:18:48,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 04:18:48,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:48,004 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] [2023-11-19 04:18:48,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:48,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 04:18:48,218 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:48,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:48,218 INFO L85 PathProgramCache]: Analyzing trace with hash 627845419, now seen corresponding path program 1 times [2023-11-19 04:18:48,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:48,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983028675] [2023-11-19 04:18:48,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:48,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:18:48,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:48,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983028675] [2023-11-19 04:18:48,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983028675] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:48,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688382291] [2023-11-19 04:18:48,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:48,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:48,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:48,400 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:48,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:18:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:48,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:18:48,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:18:48,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:18:48,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688382291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:48,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:18:48,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-19 04:18:48,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728278817] [2023-11-19 04:18:48,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:48,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:48,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:48,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:48,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:48,497 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) [2023-11-19 04:18:48,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:48,545 INFO L93 Difference]: Finished difference Result 425 states and 525 transitions. [2023-11-19 04:18:48,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:48,546 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 [2023-11-19 04:18:48,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:48,547 INFO L225 Difference]: With dead ends: 425 [2023-11-19 04:18:48,548 INFO L226 Difference]: Without dead ends: 181 [2023-11-19 04:18:48,548 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 [2023-11-19 04:18:48,549 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 [2023-11-19 04:18:48,550 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] [2023-11-19 04:18:48,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-19 04:18:48,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-11-19 04:18:48,569 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) [2023-11-19 04:18:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 215 transitions. [2023-11-19 04:18:48,571 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 215 transitions. Word has length 56 [2023-11-19 04:18:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:48,571 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 215 transitions. [2023-11-19 04:18:48,571 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) [2023-11-19 04:18:48,572 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 215 transitions. [2023-11-19 04:18:48,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 04:18:48,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:48,573 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] [2023-11-19 04:18:48,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:48,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 04:18:48,794 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:48,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:48,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1218544060, now seen corresponding path program 1 times [2023-11-19 04:18:48,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:48,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382609327] [2023-11-19 04:18:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:18:48,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:48,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382609327] [2023-11-19 04:18:48,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382609327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:48,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914254756] [2023-11-19 04:18:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:48,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:48,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:48,852 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:48,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:18:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:48,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:18:48,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 04:18:48,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:18:48,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914254756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:48,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:18:48,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-11-19 04:18:48,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314707409] [2023-11-19 04:18:48,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:48,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:48,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:48,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:48,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:18:48,988 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) [2023-11-19 04:18:49,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:49,028 INFO L93 Difference]: Finished difference Result 283 states and 346 transitions. [2023-11-19 04:18:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:49,028 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 [2023-11-19 04:18:49,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:49,032 INFO L225 Difference]: With dead ends: 283 [2023-11-19 04:18:49,032 INFO L226 Difference]: Without dead ends: 168 [2023-11-19 04:18:49,033 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 [2023-11-19 04:18:49,034 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 [2023-11-19 04:18:49,035 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] [2023-11-19 04:18:49,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-19 04:18:49,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2023-11-19 04:18:49,056 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) [2023-11-19 04:18:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 193 transitions. [2023-11-19 04:18:49,058 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 193 transitions. Word has length 60 [2023-11-19 04:18:49,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:49,058 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 193 transitions. [2023-11-19 04:18:49,059 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) [2023-11-19 04:18:49,059 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 193 transitions. [2023-11-19 04:18:49,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 04:18:49,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:49,060 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] [2023-11-19 04:18:49,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:49,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:49,282 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:49,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:49,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1645674494, now seen corresponding path program 1 times [2023-11-19 04:18:49,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:49,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024629677] [2023-11-19 04:18:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:49,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 04:18:49,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:49,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024629677] [2023-11-19 04:18:49,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024629677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:49,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:49,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:18:49,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550753283] [2023-11-19 04:18:49,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:49,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:18:49,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:49,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:18:49,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:18:49,335 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) [2023-11-19 04:18:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:49,389 INFO L93 Difference]: Finished difference Result 264 states and 315 transitions. [2023-11-19 04:18:49,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:18:49,390 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 [2023-11-19 04:18:49,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:49,391 INFO L225 Difference]: With dead ends: 264 [2023-11-19 04:18:49,391 INFO L226 Difference]: Without dead ends: 164 [2023-11-19 04:18:49,392 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 [2023-11-19 04:18:49,393 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 [2023-11-19 04:18:49,393 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] [2023-11-19 04:18:49,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-19 04:18:49,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-11-19 04:18:49,413 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) [2023-11-19 04:18:49,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 188 transitions. [2023-11-19 04:18:49,415 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 188 transitions. Word has length 60 [2023-11-19 04:18:49,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:49,415 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 188 transitions. [2023-11-19 04:18:49,415 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) [2023-11-19 04:18:49,416 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 188 transitions. [2023-11-19 04:18:49,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 04:18:49,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:49,417 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] [2023-11-19 04:18:49,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 04:18:49,417 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:49,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:49,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1911972061, now seen corresponding path program 1 times [2023-11-19 04:18:49,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:49,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510647707] [2023-11-19 04:18:49,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:49,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 04:18:49,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:49,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510647707] [2023-11-19 04:18:49,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510647707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:49,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066836596] [2023-11-19 04:18:49,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:49,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:49,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:49,517 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:49,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:18:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:49,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 04:18:49,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 04:18:49,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:18:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 04:18:49,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066836596] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:18:49,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1544071245] [2023-11-19 04:18:49,849 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-11-19 04:18:49,850 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:18:49,850 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:18:49,851 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:18:49,851 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:18:52,635 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 19 for LOIs [2023-11-19 04:18:52,638 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 86 for LOIs [2023-11-19 04:18:52,707 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify_threads with input of size 10 for LOIs [2023-11-19 04:18:52,770 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:18:55,874 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 [2023-11-19 04:18:55,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:18:55,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:18:55,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 04:18:55,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631410483] [2023-11-19 04:18:55,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:18:55,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:18:55,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:55,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:18:55,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1649, Unknown=0, NotChecked=0, Total=1806 [2023-11-19 04:18:55,878 INFO L87 Difference]: Start difference. First operand 164 states and 188 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 04:18:56,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:56,048 INFO L93 Difference]: Finished difference Result 347 states and 398 transitions. [2023-11-19 04:18:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:18:56,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 61 [2023-11-19 04:18:56,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:56,051 INFO L225 Difference]: With dead ends: 347 [2023-11-19 04:18:56,051 INFO L226 Difference]: Without dead ends: 344 [2023-11-19 04:18:56,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=157, Invalid=1649, Unknown=0, NotChecked=0, Total=1806 [2023-11-19 04:18:56,053 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 121 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:56,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 407 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:56,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-11-19 04:18:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 220. [2023-11-19 04:18:56,080 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) [2023-11-19 04:18:56,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 254 transitions. [2023-11-19 04:18:56,082 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 254 transitions. Word has length 61 [2023-11-19 04:18:56,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:56,083 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 254 transitions. [2023-11-19 04:18:56,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 04:18:56,083 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 254 transitions. [2023-11-19 04:18:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 04:18:56,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:56,084 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] [2023-11-19 04:18:56,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:56,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 04:18:56,298 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:56,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:56,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1016024744, now seen corresponding path program 2 times [2023-11-19 04:18:56,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:56,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110039462] [2023-11-19 04:18:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:56,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 04:18:56,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:56,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110039462] [2023-11-19 04:18:56,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110039462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:56,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:56,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:18:56,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70818424] [2023-11-19 04:18:56,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:56,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:56,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:56,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:56,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:56,344 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) [2023-11-19 04:18:56,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:56,387 INFO L93 Difference]: Finished difference Result 344 states and 397 transitions. [2023-11-19 04:18:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:56,387 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 [2023-11-19 04:18:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:56,388 INFO L225 Difference]: With dead ends: 344 [2023-11-19 04:18:56,388 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:18:56,389 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 [2023-11-19 04:18:56,390 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 [2023-11-19 04:18:56,390 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] [2023-11-19 04:18:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:18:56,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:18:56,392 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) [2023-11-19 04:18:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:18:56,392 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2023-11-19 04:18:56,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:56,392 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:18:56,393 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) [2023-11-19 04:18:56,393 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:18:56,393 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:18:56,395 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:18:56,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 04:18:56,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 04:19:00,687 INFO L899 garLoopResultBuilder]: For program point L62(lines 62 67) no Hoare annotation was computed. [2023-11-19 04:19:00,688 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 51) no Hoare annotation was computed. [2023-11-19 04:19:00,688 INFO L899 garLoopResultBuilder]: For program point immediate_notify_threadsEXIT(lines 76 100) no Hoare annotation was computed. [2023-11-19 04:19:00,689 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)))) [2023-11-19 04:19:00,689 INFO L899 garLoopResultBuilder]: For program point L42-2(lines 42 51) no Hoare annotation was computed. [2023-11-19 04:19:00,689 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 70) no Hoare annotation was computed. [2023-11-19 04:19:00,689 INFO L899 garLoopResultBuilder]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2023-11-19 04:19:00,689 INFO L899 garLoopResultBuilder]: For program point L53(lines 41 55) no Hoare annotation was computed. [2023-11-19 04:19:00,689 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 48) no Hoare annotation was computed. [2023-11-19 04:19:00,689 INFO L899 garLoopResultBuilder]: For program point L72(lines 60 74) no Hoare annotation was computed. [2023-11-19 04:19:00,690 INFO L899 garLoopResultBuilder]: For program point exists_runnable_threadEXIT(lines 220 239) no Hoare annotation was computed. [2023-11-19 04:19:00,690 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 220 239) the Hoare annotation is: true [2023-11-19 04:19:00,690 INFO L895 garLoopResultBuilder]: At program point L192(line 192) the Hoare annotation is: false [2023-11-19 04:19:00,690 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))))) [2023-11-19 04:19:00,690 INFO L899 garLoopResultBuilder]: For program point L250(line 250) no Hoare annotation was computed. [2023-11-19 04:19:00,690 INFO L899 garLoopResultBuilder]: For program point L118(lines 117 137) no Hoare annotation was computed. [2023-11-19 04:19:00,691 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))) [2023-11-19 04:19:00,691 INFO L899 garLoopResultBuilder]: For program point L300-1(line 300) no Hoare annotation was computed. [2023-11-19 04:19:00,691 INFO L899 garLoopResultBuilder]: For program point do_write_p_returnLabel#1(lines 101 143) no Hoare annotation was computed. [2023-11-19 04:19:00,691 INFO L899 garLoopResultBuilder]: For program point L152(lines 152 156) no Hoare annotation was computed. [2023-11-19 04:19:00,691 INFO L899 garLoopResultBuilder]: For program point L119(lines 119 127) no Hoare annotation was computed. [2023-11-19 04:19:00,691 INFO L899 garLoopResultBuilder]: For program point start_simulation_returnLabel#1(lines 313 341) no Hoare annotation was computed. [2023-11-19 04:19:00,691 INFO L899 garLoopResultBuilder]: For program point L276(lines 276 283) no Hoare annotation was computed. [2023-11-19 04:19:00,691 INFO L899 garLoopResultBuilder]: For program point L161(lines 160 195) no Hoare annotation was computed. [2023-11-19 04:19:00,692 INFO L899 garLoopResultBuilder]: For program point do_read_c_returnLabel#1(lines 145 201) no Hoare annotation was computed. [2023-11-19 04:19:00,692 INFO L899 garLoopResultBuilder]: For program point L252(lines 252 256) no Hoare annotation was computed. [2023-11-19 04:19:00,692 INFO L899 garLoopResultBuilder]: For program point L252-1(lines 247 287) no Hoare annotation was computed. [2023-11-19 04:19:00,692 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 04:19:00,692 INFO L899 garLoopResultBuilder]: For program point L261(lines 261 268) no Hoare annotation was computed. [2023-11-19 04:19:00,692 INFO L899 garLoopResultBuilder]: For program point L162-1(lines 162 172) no Hoare annotation was computed. [2023-11-19 04:19:00,692 INFO L895 garLoopResultBuilder]: At program point L187(line 187) the Hoare annotation is: false [2023-11-19 04:19:00,693 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)))) [2023-11-19 04:19:00,693 INFO L899 garLoopResultBuilder]: For program point L179-1(line 179) no Hoare annotation was computed. [2023-11-19 04:19:00,693 INFO L899 garLoopResultBuilder]: For program point eval_returnLabel#1(lines 240 293) no Hoare annotation was computed. [2023-11-19 04:19:00,693 INFO L899 garLoopResultBuilder]: For program point L106(lines 106 114) no Hoare annotation was computed. [2023-11-19 04:19:00,694 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))) [2023-11-19 04:19:00,694 INFO L899 garLoopResultBuilder]: For program point L330(lines 330 334) no Hoare annotation was computed. [2023-11-19 04:19:00,694 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 04:19:00,695 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))) [2023-11-19 04:19:00,695 INFO L899 garLoopResultBuilder]: For program point L182(lines 182 194) no Hoare annotation was computed. [2023-11-19 04:19:00,695 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 157) no Hoare annotation was computed. [2023-11-19 04:19:00,695 INFO L899 garLoopResultBuilder]: For program point L257(lines 247 287) no Hoare annotation was computed. [2023-11-19 04:19:00,695 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))) [2023-11-19 04:19:00,696 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 189) no Hoare annotation was computed. [2023-11-19 04:19:00,696 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)))) [2023-11-19 04:19:00,696 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 113) no Hoare annotation was computed. [2023-11-19 04:19:00,697 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)))) [2023-11-19 04:19:00,697 INFO L899 garLoopResultBuilder]: For program point L134-1(line 134) no Hoare annotation was computed. [2023-11-19 04:19:00,697 INFO L899 garLoopResultBuilder]: For program point errorEXIT(lines 15 22) no Hoare annotation was computed. [2023-11-19 04:19:00,697 INFO L902 garLoopResultBuilder]: At program point ERROR(lines 15 22) the Hoare annotation is: true [2023-11-19 04:19:00,697 INFO L899 garLoopResultBuilder]: For program point errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-19 04:19:00,701 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:19:00,703 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:19:00,720 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-19 04:19:00,722 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-19 04:19:00,722 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-19 04:19:00,722 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-19 04:19:00,723 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-19 04:19:00,723 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-19 04:19:00,723 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-19 04:19:00,723 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-19 04:19:00,723 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-19 04:19:00,726 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-19 04:19:00,727 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-11-19 04:19:00,727 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-19 04:19:00,728 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-19 04:19:00,728 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-19 04:19:00,728 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-19 04:19:00,728 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-19 04:19:00,729 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-19 04:19:00,729 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-19 04:19:00,729 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-19 04:19:00,730 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-11-19 04:19:00,732 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-19 04:19:00,733 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-19 04:19:00,733 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-11-19 04:19:00,734 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-19 04:19:00,734 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-19 04:19:00,734 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-19 04:19:00,735 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-19 04:19:00,735 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-19 04:19:00,735 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-19 04:19:00,735 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-19 04:19:00,736 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-19 04:19:00,736 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 [2023-11-19 04:19:00,736 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-19 04:19:00,736 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-19 04:19:00,737 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-19 04:19:00,737 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-19 04:19:00,738 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-11-19 04:19:00,738 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-19 04:19:00,738 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-19 04:19:00,738 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-19 04:19:00,739 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-19 04:19:00,739 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-19 04:19:00,739 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-19 04:19:00,739 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-19 04:19:00,740 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-19 04:19:00,740 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 [2023-11-19 04:19:00,740 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-19 04:19:00,740 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-19 04:19:00,742 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-19 04:19:00,742 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 [2023-11-19 04:19:00,742 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-19 04:19:00,743 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 [2023-11-19 04:19:00,743 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-11-19 04:19:00,743 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-19 04:19:00,744 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-19 04:19:00,744 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 [2023-11-19 04:19:00,744 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-19 04:19:00,744 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-19 04:19:00,745 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-19 04:19:00,745 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-19 04:19:00,745 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-19 04:19:00,746 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-19 04:19:00,746 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 [2023-11-19 04:19:00,746 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-19 04:19:00,746 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-19 04:19:00,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:19:00 BoogieIcfgContainer [2023-11-19 04:19:00,747 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:19:00,748 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:19:00,748 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:19:00,748 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:19:00,748 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:18:14" (3/4) ... [2023-11-19 04:19:00,751 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 04:19:00,755 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure immediate_notify_threads [2023-11-19 04:19:00,755 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure exists_runnable_thread [2023-11-19 04:19:00,756 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure error [2023-11-19 04:19:00,764 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2023-11-19 04:19:00,765 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-19 04:19:00,765 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 04:19:00,766 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 04:19:00,908 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:19:00,909 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 04:19:00,909 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:19:00,911 INFO L158 Benchmark]: Toolchain (without parser) took 47277.04ms. Allocated memory was 159.4MB in the beginning and 478.2MB in the end (delta: 318.8MB). Free memory was 110.8MB in the beginning and 419.6MB in the end (delta: -308.8MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2023-11-19 04:19:00,911 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 159.4MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:19:00,912 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.62ms. Allocated memory is still 159.4MB. Free memory was 110.6MB in the beginning and 98.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:19:00,912 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.26ms. Allocated memory is still 159.4MB. Free memory was 98.3MB in the beginning and 96.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:19:00,913 INFO L158 Benchmark]: Boogie Preprocessor took 32.16ms. Allocated memory is still 159.4MB. Free memory was 96.2MB in the beginning and 94.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:19:00,913 INFO L158 Benchmark]: RCFGBuilder took 573.78ms. Allocated memory is still 159.4MB. Free memory was 94.7MB in the beginning and 71.0MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 04:19:00,914 INFO L158 Benchmark]: TraceAbstraction took 46135.34ms. Allocated memory was 159.4MB in the beginning and 478.2MB in the end (delta: 318.8MB). Free memory was 70.4MB in the beginning and 427.0MB in the end (delta: -356.5MB). Peak memory consumption was 234.3MB. Max. memory is 16.1GB. [2023-11-19 04:19:00,915 INFO L158 Benchmark]: Witness Printer took 161.97ms. Allocated memory is still 478.2MB. Free memory was 425.9MB in the beginning and 419.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 04:19:00,920 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 159.4MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.62ms. Allocated memory is still 159.4MB. Free memory was 110.6MB in the beginning and 98.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.26ms. Allocated memory is still 159.4MB. Free memory was 98.3MB in the beginning and 96.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.16ms. Allocated memory is still 159.4MB. Free memory was 96.2MB in the beginning and 94.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 573.78ms. Allocated memory is still 159.4MB. Free memory was 94.7MB in the beginning and 71.0MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 46135.34ms. Allocated memory was 159.4MB in the beginning and 478.2MB in the end (delta: 318.8MB). Free memory was 70.4MB in the beginning and 427.0MB in the end (delta: -356.5MB). Peak memory consumption was 234.3MB. Max. memory is 16.1GB. * Witness Printer took 161.97ms. Allocated memory is still 478.2MB. Free memory was 425.9MB in the beginning and 419.6MB in the end (delta: 6.3MB). 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: 46.0s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 684 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 677 mSDsluCounter, 2417 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1507 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2767 IncrementalHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 910 mSDtfsCounter, 2767 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 671 GetRequests, 526 SyntacticMatches, 6 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 22.6s 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: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 277 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 199 PreInvPairs, 240 NumberOfFragments, 1797 HoareAnnotationTreeSize, 199 FomulaSimplifications, 5930 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 13 FomulaSimplificationsInter, 6086 FormulaSimplificationTreeSizeReductionInter, 3.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 909 NumberOfCodeBlocks, 909 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1051 ConstructedInterpolants, 0 QuantifiedInterpolants, 2752 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1097 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: 6.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 90, DAG_INTERPRETER_EARLY_EXITS: 7, TOOLS_POST_APPLICATIONS: 135, TOOLS_POST_TIME: 3.7s, TOOLS_POST_CALL_APPLICATIONS: 36, TOOLS_POST_CALL_TIME: 0.9s, TOOLS_POST_RETURN_APPLICATIONS: 30, TOOLS_POST_RETURN_TIME: 0.9s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 192, TOOLS_QUANTIFIERELIM_TIME: 5.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 281, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 36, DOMAIN_JOIN_TIME: 0.8s, 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: 0.2s, LOOP_SUMMARIZER_APPLICATIONS: 7, LOOP_SUMMARIZER_CACHE_MISSES: 7, LOOP_SUMMARIZER_OVERALL_TIME: 1.9s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.9s, 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: 0.1s, 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! [2023-11-19 04:19:00,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135b55fe-c4d7-488b-b6a2-67fb8027b26a/bin/utaipan-verify-t7M7D8N6sZ/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