./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 69f73d75edf25d106d657bdc186907312ee3ef2bf4e5da547c0ac3641991b71d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:03:28,724 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:03:28,788 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 14:03:28,792 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:03:28,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:03:28,813 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:03:28,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:03:28,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:03:28,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:03:28,816 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:03:28,816 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:03:28,817 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:03:28,817 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:03:28,818 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:03:28,818 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:03:28,818 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:03:28,819 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:03:28,819 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:03:28,820 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:03:28,820 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:03:28,821 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:03:28,821 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:03:28,822 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:03:28,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:03:28,823 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:03:28,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:03:28,824 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:03:28,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:03:28,825 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:03:28,825 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:03:28,825 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:03:28,826 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:03:28,826 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:03:28,827 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:03:28,827 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:03:28,828 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:03:28,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:03:28,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:03:28,829 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:03:28,829 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:03:28,829 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:03:28,829 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:03:28,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:03:28,830 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:03:28,830 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:03:28,830 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:03:28,831 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:03:28,831 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_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f73d75edf25d106d657bdc186907312ee3ef2bf4e5da547c0ac3641991b71d [2023-12-02 14:03:29,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:03:29,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:03:29,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:03:29,084 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:03:29,085 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:03:29,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/test-easy6.wvr.c [2023-12-02 14:03:31,825 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:03:31,999 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:03:31,999 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/sv-benchmarks/c/weaver/test-easy6.wvr.c [2023-12-02 14:03:32,007 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/data/cef30fd93/c24921d7dc5748a198ea11fc2eff0052/FLAG27dbf59da [2023-12-02 14:03:32,020 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/data/cef30fd93/c24921d7dc5748a198ea11fc2eff0052 [2023-12-02 14:03:32,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:03:32,023 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:03:32,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:03:32,025 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:03:32,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:03:32,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:03:32" (1/1) ... [2023-12-02 14:03:32,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c3f068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:32, skipping insertion in model container [2023-12-02 14:03:32,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:03:32" (1/1) ... [2023-12-02 14:03:32,054 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:03:32,199 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_3106e188-1d05-4f8f-abf5-79c0c99ca673/sv-benchmarks/c/weaver/test-easy6.wvr.c[3072,3085] [2023-12-02 14:03:32,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:03:32,212 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:03:32,232 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/sv-benchmarks/c/weaver/test-easy6.wvr.c[3072,3085] [2023-12-02 14:03:32,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:03:32,240 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:03:32,241 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:03:32,247 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:03:32,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:32 WrapperNode [2023-12-02 14:03:32,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:03:32,248 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:03:32,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:03:32,248 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:03:32,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:32" (1/1) ... [2023-12-02 14:03:32,261 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:32" (1/1) ... [2023-12-02 14:03:32,284 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2023-12-02 14:03:32,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:03:32,285 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:03:32,285 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:03:32,285 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:03:32,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:32" (1/1) ... [2023-12-02 14:03:32,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:32" (1/1) ... [2023-12-02 14:03:32,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:32" (1/1) ... [2023-12-02 14:03:32,298 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:32" (1/1) ... [2023-12-02 14:03:32,304 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:32" (1/1) ... [2023-12-02 14:03:32,306 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:32" (1/1) ... [2023-12-02 14:03:32,308 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:32" (1/1) ... [2023-12-02 14:03:32,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:32" (1/1) ... [2023-12-02 14:03:32,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:03:32,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:03:32,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:03:32,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:03:32,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:32" (1/1) ... [2023-12-02 14:03:32,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:03:32,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:03:32,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:03:32,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:03:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:03:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 14:03:32,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 14:03:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 14:03:32,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 14:03:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:03:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:03:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:03:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 14:03:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 14:03:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:03:32,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:03:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:03:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:03:32,383 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 14:03:32,486 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:03:32,489 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:03:32,661 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:03:32,788 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:03:32,789 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 14:03:32,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:03:32 BoogieIcfgContainer [2023-12-02 14:03:32,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:03:32,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:03:32,792 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:03:32,796 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:03:32,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:03:32" (1/3) ... [2023-12-02 14:03:32,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c4b2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:03:32, skipping insertion in model container [2023-12-02 14:03:32,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:32" (2/3) ... [2023-12-02 14:03:32,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c4b2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:03:32, skipping insertion in model container [2023-12-02 14:03:32,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:03:32" (3/3) ... [2023-12-02 14:03:32,798 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2023-12-02 14:03:32,805 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 14:03:32,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:03:32,813 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:03:32,813 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 14:03:32,854 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-02 14:03:32,886 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 35 transitions, 84 flow [2023-12-02 14:03:32,937 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 341 states, 340 states have (on average 2.261764705882353) internal successors, (769), 340 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:32,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:03:32,958 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;@122310ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:03:32,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-02 14:03:32,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 341 states, 340 states have (on average 2.261764705882353) internal successors, (769), 340 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:32,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 14:03:32,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:03:32,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:03:32,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:03:32,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:03:32,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1153280293, now seen corresponding path program 1 times [2023-12-02 14:03:32,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:03:32,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576456705] [2023-12-02 14:03:32,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:03:32,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:03:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:03:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:03:33,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:03:33,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576456705] [2023-12-02 14:03:33,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576456705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:03:33,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:03:33,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 14:03:33,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558714691] [2023-12-02 14:03:33,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:03:33,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:03:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:03:33,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:03:33,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 14:03:33,573 INFO L87 Difference]: Start difference. First operand has 341 states, 340 states have (on average 2.261764705882353) internal successors, (769), 340 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:03:33,762 INFO L93 Difference]: Finished difference Result 434 states and 935 transitions. [2023-12-02 14:03:33,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:03:33,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-02 14:03:33,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:03:33,777 INFO L225 Difference]: With dead ends: 434 [2023-12-02 14:03:33,777 INFO L226 Difference]: Without dead ends: 355 [2023-12-02 14:03:33,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:03:33,782 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 93 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:03:33,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 96 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:03:33,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-12-02 14:03:33,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 293. [2023-12-02 14:03:33,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 2.2226027397260273) internal successors, (649), 292 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:33,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 649 transitions. [2023-12-02 14:03:33,844 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 649 transitions. Word has length 32 [2023-12-02 14:03:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:03:33,844 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 649 transitions. [2023-12-02 14:03:33,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 649 transitions. [2023-12-02 14:03:33,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 14:03:33,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:03:33,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:03:33,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:03:33,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:03:33,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:03:33,850 INFO L85 PathProgramCache]: Analyzing trace with hash -437228413, now seen corresponding path program 2 times [2023-12-02 14:03:33,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:03:33,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592104005] [2023-12-02 14:03:33,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:03:33,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:03:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:03:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:03:34,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:03:34,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592104005] [2023-12-02 14:03:34,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592104005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:03:34,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:03:34,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 14:03:34,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11287833] [2023-12-02 14:03:34,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:03:34,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:03:34,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:03:34,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:03:34,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 14:03:34,008 INFO L87 Difference]: Start difference. First operand 293 states and 649 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:34,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:03:34,177 INFO L93 Difference]: Finished difference Result 474 states and 1034 transitions. [2023-12-02 14:03:34,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 14:03:34,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-02 14:03:34,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:03:34,181 INFO L225 Difference]: With dead ends: 474 [2023-12-02 14:03:34,182 INFO L226 Difference]: Without dead ends: 404 [2023-12-02 14:03:34,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-02 14:03:34,184 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 107 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:03:34,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 89 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:03:34,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-12-02 14:03:34,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 263. [2023-12-02 14:03:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 2.1908396946564888) internal successors, (574), 262 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:34,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 574 transitions. [2023-12-02 14:03:34,205 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 574 transitions. Word has length 32 [2023-12-02 14:03:34,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:03:34,206 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 574 transitions. [2023-12-02 14:03:34,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:34,206 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 574 transitions. [2023-12-02 14:03:34,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 14:03:34,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:03:34,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:03:34,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:03:34,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:03:34,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:03:34,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1193613859, now seen corresponding path program 3 times [2023-12-02 14:03:34,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:03:34,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684391314] [2023-12-02 14:03:34,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:03:34,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:03:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:03:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:03:34,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:03:34,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684391314] [2023-12-02 14:03:34,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684391314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:03:34,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:03:34,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:03:34,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634009450] [2023-12-02 14:03:34,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:03:34,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:03:34,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:03:34,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:03:34,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:03:34,285 INFO L87 Difference]: Start difference. First operand 263 states and 574 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:34,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:03:34,318 INFO L93 Difference]: Finished difference Result 251 states and 544 transitions. [2023-12-02 14:03:34,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:03:34,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-02 14:03:34,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:03:34,321 INFO L225 Difference]: With dead ends: 251 [2023-12-02 14:03:34,321 INFO L226 Difference]: Without dead ends: 251 [2023-12-02 14:03:34,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:03:34,323 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:03:34,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 33 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:03:34,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-02 14:03:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2023-12-02 14:03:34,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 2.176) internal successors, (544), 250 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:34,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 544 transitions. [2023-12-02 14:03:34,336 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 544 transitions. Word has length 32 [2023-12-02 14:03:34,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:03:34,337 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 544 transitions. [2023-12-02 14:03:34,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:34,337 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 544 transitions. [2023-12-02 14:03:34,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 14:03:34,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:03:34,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:03:34,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:03:34,339 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:03:34,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:03:34,340 INFO L85 PathProgramCache]: Analyzing trace with hash 789647941, now seen corresponding path program 4 times [2023-12-02 14:03:34,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:03:34,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808551671] [2023-12-02 14:03:34,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:03:34,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:03:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:03:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:03:34,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:03:34,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808551671] [2023-12-02 14:03:34,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808551671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:03:34,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:03:34,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 14:03:34,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660377680] [2023-12-02 14:03:34,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:03:34,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:03:34,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:03:34,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:03:34,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 14:03:34,454 INFO L87 Difference]: Start difference. First operand 251 states and 544 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:34,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:03:34,582 INFO L93 Difference]: Finished difference Result 311 states and 651 transitions. [2023-12-02 14:03:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:03:34,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-02 14:03:34,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:03:34,584 INFO L225 Difference]: With dead ends: 311 [2023-12-02 14:03:34,584 INFO L226 Difference]: Without dead ends: 208 [2023-12-02 14:03:34,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:03:34,586 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 91 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:03:34,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 92 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:03:34,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-02 14:03:34,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 181. [2023-12-02 14:03:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.111111111111111) internal successors, (380), 180 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:34,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 380 transitions. [2023-12-02 14:03:34,593 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 380 transitions. Word has length 32 [2023-12-02 14:03:34,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:03:34,594 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 380 transitions. [2023-12-02 14:03:34,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:34,594 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 380 transitions. [2023-12-02 14:03:34,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 14:03:34,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:03:34,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:03:34,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 14:03:34,595 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:03:34,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:03:34,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1131919733, now seen corresponding path program 5 times [2023-12-02 14:03:34,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:03:34,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352724439] [2023-12-02 14:03:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:03:34,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:03:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:03:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:03:34,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:03:34,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352724439] [2023-12-02 14:03:34,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352724439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:03:34,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:03:34,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 14:03:34,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007366023] [2023-12-02 14:03:34,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:03:34,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:03:34,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:03:34,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:03:34,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 14:03:34,744 INFO L87 Difference]: Start difference. First operand 181 states and 380 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:34,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:03:34,895 INFO L93 Difference]: Finished difference Result 319 states and 648 transitions. [2023-12-02 14:03:34,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:03:34,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-02 14:03:34,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:03:34,897 INFO L225 Difference]: With dead ends: 319 [2023-12-02 14:03:34,898 INFO L226 Difference]: Without dead ends: 287 [2023-12-02 14:03:34,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:03:34,899 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 109 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:03:34,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 82 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:03:34,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-02 14:03:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 177. [2023-12-02 14:03:34,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.102272727272727) internal successors, (370), 176 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:34,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 370 transitions. [2023-12-02 14:03:34,906 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 370 transitions. Word has length 32 [2023-12-02 14:03:34,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:03:34,907 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 370 transitions. [2023-12-02 14:03:34,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:34,907 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 370 transitions. [2023-12-02 14:03:34,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 14:03:34,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:03:34,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:03:34,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 14:03:34,908 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:03:34,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:03:34,909 INFO L85 PathProgramCache]: Analyzing trace with hash -549975891, now seen corresponding path program 6 times [2023-12-02 14:03:34,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:03:34,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198205180] [2023-12-02 14:03:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:03:34,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:03:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:03:34,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:03:34,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:03:34,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198205180] [2023-12-02 14:03:34,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198205180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:03:34,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:03:34,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:03:34,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304121186] [2023-12-02 14:03:34,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:03:34,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:03:34,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:03:34,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:03:34,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:03:34,981 INFO L87 Difference]: Start difference. First operand 177 states and 370 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:35,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:03:35,010 INFO L93 Difference]: Finished difference Result 177 states and 364 transitions. [2023-12-02 14:03:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:03:35,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-02 14:03:35,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:03:35,012 INFO L225 Difference]: With dead ends: 177 [2023-12-02 14:03:35,012 INFO L226 Difference]: Without dead ends: 177 [2023-12-02 14:03:35,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:03:35,013 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:03:35,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 36 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:03:35,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-02 14:03:35,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-12-02 14:03:35,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.0681818181818183) internal successors, (364), 176 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:35,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 364 transitions. [2023-12-02 14:03:35,021 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 364 transitions. Word has length 32 [2023-12-02 14:03:35,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:03:35,022 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 364 transitions. [2023-12-02 14:03:35,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:35,022 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 364 transitions. [2023-12-02 14:03:35,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 14:03:35,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:03:35,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:03:35,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 14:03:35,023 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:03:35,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:03:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2036830581, now seen corresponding path program 7 times [2023-12-02 14:03:35,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:03:35,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613111150] [2023-12-02 14:03:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:03:35,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:03:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:03:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:03:35,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:03:35,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613111150] [2023-12-02 14:03:35,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613111150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:03:35,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:03:35,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 14:03:35,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957190123] [2023-12-02 14:03:35,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:03:35,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:03:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:03:35,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:03:35,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 14:03:35,165 INFO L87 Difference]: Start difference. First operand 177 states and 364 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:35,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:03:35,286 INFO L93 Difference]: Finished difference Result 203 states and 411 transitions. [2023-12-02 14:03:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:03:35,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-02 14:03:35,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:03:35,288 INFO L225 Difference]: With dead ends: 203 [2023-12-02 14:03:35,288 INFO L226 Difference]: Without dead ends: 169 [2023-12-02 14:03:35,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 14:03:35,289 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 63 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:03:35,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 72 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:03:35,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-02 14:03:35,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2023-12-02 14:03:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.0476190476190474) internal successors, (344), 168 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 344 transitions. [2023-12-02 14:03:35,296 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 344 transitions. Word has length 32 [2023-12-02 14:03:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:03:35,296 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 344 transitions. [2023-12-02 14:03:35,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:35,297 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 344 transitions. [2023-12-02 14:03:35,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 14:03:35,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:03:35,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:03:35,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 14:03:35,298 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:03:35,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:03:35,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1217342513, now seen corresponding path program 8 times [2023-12-02 14:03:35,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:03:35,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801284237] [2023-12-02 14:03:35,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:03:35,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:03:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:03:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:03:35,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:03:35,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801284237] [2023-12-02 14:03:35,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801284237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:03:35,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:03:35,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 14:03:35,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711364573] [2023-12-02 14:03:35,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:03:35,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:03:35,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:03:35,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:03:35,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 14:03:35,409 INFO L87 Difference]: Start difference. First operand 169 states and 344 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:03:35,487 INFO L93 Difference]: Finished difference Result 112 states and 228 transitions. [2023-12-02 14:03:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:03:35,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-02 14:03:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:03:35,488 INFO L225 Difference]: With dead ends: 112 [2023-12-02 14:03:35,488 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 14:03:35,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:03:35,489 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 51 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:03:35,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 38 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:03:35,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 14:03:35,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 14:03:35,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:35,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 14:03:35,491 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2023-12-02 14:03:35,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:03:35,491 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 14:03:35,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:03:35,491 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 14:03:35,491 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 14:03:35,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-02 14:03:35,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-02 14:03:35,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-02 14:03:35,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 14:03:35,496 INFO L445 BasicCegarLoop]: Path program histogram: [8] [2023-12-02 14:03:35,499 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-02 14:03:35,500 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 14:03:35,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:03:35 BasicIcfg [2023-12-02 14:03:35,503 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 14:03:35,503 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 14:03:35,503 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 14:03:35,504 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 14:03:35,504 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:03:32" (3/4) ... [2023-12-02 14:03:35,505 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 14:03:35,509 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-12-02 14:03:35,509 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-12-02 14:03:35,514 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2023-12-02 14:03:35,514 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-12-02 14:03:35,515 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 14:03:35,515 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-12-02 14:03:35,577 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 14:03:35,578 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 14:03:35,578 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 14:03:35,578 INFO L158 Benchmark]: Toolchain (without parser) took 3555.10ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 108.3MB in the beginning and 64.9MB in the end (delta: 43.4MB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. [2023-12-02 14:03:35,579 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 146.8MB. Free memory was 120.5MB in the beginning and 120.5MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:03:35,579 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.52ms. Allocated memory is still 146.8MB. Free memory was 107.7MB in the beginning and 96.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 14:03:35,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.53ms. Allocated memory is still 146.8MB. Free memory was 96.5MB in the beginning and 94.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:03:35,580 INFO L158 Benchmark]: Boogie Preprocessor took 27.13ms. Allocated memory is still 146.8MB. Free memory was 94.5MB in the beginning and 93.7MB in the end (delta: 849.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:03:35,580 INFO L158 Benchmark]: RCFGBuilder took 476.51ms. Allocated memory is still 146.8MB. Free memory was 93.7MB in the beginning and 70.0MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-02 14:03:35,581 INFO L158 Benchmark]: TraceAbstraction took 2710.73ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 69.4MB in the beginning and 69.1MB in the end (delta: 251.4kB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2023-12-02 14:03:35,581 INFO L158 Benchmark]: Witness Printer took 74.55ms. Allocated memory is still 176.2MB. Free memory was 69.1MB in the beginning and 64.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 14:03:35,583 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 146.8MB. Free memory was 120.5MB in the beginning and 120.5MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.52ms. Allocated memory is still 146.8MB. Free memory was 107.7MB in the beginning and 96.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.53ms. Allocated memory is still 146.8MB. Free memory was 96.5MB in the beginning and 94.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.13ms. Allocated memory is still 146.8MB. Free memory was 94.5MB in the beginning and 93.7MB in the end (delta: 849.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 476.51ms. Allocated memory is still 146.8MB. Free memory was 93.7MB in the beginning and 70.0MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2710.73ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 69.4MB in the beginning and 69.1MB in the end (delta: 251.4kB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * Witness Printer took 74.55ms. Allocated memory is still 176.2MB. Free memory was 69.1MB in the beginning and 64.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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: 116]: 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 with 1 thread instances CFG has 5 procedures, 62 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 524 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 524 mSDsluCounter, 538 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 372 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 810 IncrementalHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 166 mSDtfsCounter, 810 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=0, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 340 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 762 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-02 14:03:35,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3106e188-1d05-4f8f-abf5-79c0c99ca673/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE