./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje --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 c01f4f7d2658db6d4a951cb25555f85a195a1e66c897cc0a3f349ba621d29da1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:27:01,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:27:01,325 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 01:27:01,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:27:01,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:27:01,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:27:01,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:27:01,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:27:01,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:27:01,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:27:01,362 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:27:01,362 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:27:01,363 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:27:01,363 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:27:01,364 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:27:01,364 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:27:01,365 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:27:01,365 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:27:01,366 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:27:01,366 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:27:01,366 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:27:01,367 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:27:01,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:27:01,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:27:01,368 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:27:01,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:27:01,369 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:27:01,369 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:27:01,370 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:27:01,370 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:27:01,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:27:01,378 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:27:01,378 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:27:01,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:27:01,379 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:27:01,379 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:27:01,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:27:01,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:27:01,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:27:01,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:27:01,381 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:27:01,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:27:01,384 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:27:01,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:27:01,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:27:01,385 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:27:01,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:27:01,387 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_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c01f4f7d2658db6d4a951cb25555f85a195a1e66c897cc0a3f349ba621d29da1 [2024-11-09 01:27:01,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:27:01,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:27:01,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:27:01,724 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:27:01,725 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:27:01,726 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c Unable to find full path for "g++" [2024-11-09 01:27:03,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:27:04,189 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:27:04,189 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-11-09 01:27:04,202 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje/data/d86c77247/b2dec11e979e4488a874f8ad1cc93beb/FLAGe0d54819d [2024-11-09 01:27:04,583 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje/data/d86c77247/b2dec11e979e4488a874f8ad1cc93beb [2024-11-09 01:27:04,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:27:04,592 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:27:04,594 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:27:04,594 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:27:04,604 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:27:04,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bea84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04, skipping insertion in model container [2024-11-09 01:27:04,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,647 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:27:04,959 WARN L250 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_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[2888,2901] [2024-11-09 01:27:04,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:27:04,991 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:27:05,025 WARN L250 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_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[2888,2901] [2024-11-09 01:27:05,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:27:05,048 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:27:05,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:05 WrapperNode [2024-11-09 01:27:05,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:27:05,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:27:05,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:27:05,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:27:05,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:05" (1/1) ... [2024-11-09 01:27:05,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:05" (1/1) ... [2024-11-09 01:27:05,110 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 148 [2024-11-09 01:27:05,110 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:27:05,112 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:27:05,113 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:27:05,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:27:05,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:05" (1/1) ... [2024-11-09 01:27:05,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:05" (1/1) ... [2024-11-09 01:27:05,126 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:05" (1/1) ... [2024-11-09 01:27:05,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:05" (1/1) ... [2024-11-09 01:27:05,142 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:05" (1/1) ... [2024-11-09 01:27:05,148 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:05" (1/1) ... [2024-11-09 01:27:05,154 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:05" (1/1) ... [2024-11-09 01:27:05,155 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:05" (1/1) ... [2024-11-09 01:27:05,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:27:05,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:27:05,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:27:05,160 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:27:05,161 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:05" (1/1) ... [2024-11-09 01:27:05,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:27:05,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:05,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:27:05,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6514fe7c-e0ac-4c14-8855-6a3dc4ad0bfe/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:27:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:27:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 01:27:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 01:27:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 01:27:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 01:27:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 01:27:05,233 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 01:27:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-09 01:27:05,233 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-09 01:27:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:27:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-09 01:27:05,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-09 01:27:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 01:27:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 01:27:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:27:05,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:27:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 01:27:05,237 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 01:27:05,379 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:27:05,382 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:27:05,922 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 01:27:05,923 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:27:06,163 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:27:06,163 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 01:27:06,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:27:06 BoogieIcfgContainer [2024-11-09 01:27:06,164 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:27:06,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:27:06,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:27:06,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:27:06,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:27:04" (1/3) ... [2024-11-09 01:27:06,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0bcd8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:27:06, skipping insertion in model container [2024-11-09 01:27:06,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:05" (2/3) ... [2024-11-09 01:27:06,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0bcd8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:27:06, skipping insertion in model container [2024-11-09 01:27:06,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:27:06" (3/3) ... [2024-11-09 01:27:06,181 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2024-11-09 01:27:06,201 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:27:06,201 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 01:27:06,201 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 01:27:06,294 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-11-09 01:27:06,342 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 88 transitions, 211 flow [2024-11-09 01:27:15,616 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 192014 states, 192013 states have (on average 5.6365246103128435) internal successors, (1082286), 192013 states have internal predecessors, (1082286), 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) [2024-11-09 01:27:15,674 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:27:15,681 INFO L333 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, 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;@6bc788b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:27:15,681 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 01:27:16,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 192014 states, 192013 states have (on average 5.6365246103128435) internal successors, (1082286), 192013 states have internal predecessors, (1082286), 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) [2024-11-09 01:27:17,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 01:27:17,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:17,995 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:17,995 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 01:27:18,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:18,000 INFO L85 PathProgramCache]: Analyzing trace with hash -25014983, now seen corresponding path program 1 times [2024-11-09 01:27:18,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:18,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351726690] [2024-11-09 01:27:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:18,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:18,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:18,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351726690] [2024-11-09 01:27:18,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351726690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:18,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:18,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 01:27:18,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017936480] [2024-11-09 01:27:18,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:18,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:27:18,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:19,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:27:19,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:27:19,425 INFO L87 Difference]: Start difference. First operand has 192014 states, 192013 states have (on average 5.6365246103128435) internal successors, (1082286), 192013 states have internal predecessors, (1082286), 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 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-11-09 01:27:29,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:29,858 INFO L93 Difference]: Finished difference Result 309309 states and 1752099 transitions. [2024-11-09 01:27:29,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:27:29,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2024-11-09 01:27:29,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:33,948 INFO L225 Difference]: With dead ends: 309309 [2024-11-09 01:27:33,949 INFO L226 Difference]: Without dead ends: 279178 [2024-11-09 01:27:34,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:27:34,158 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 134 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:34,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 51 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:27:34,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279178 states. [2024-11-09 01:27:49,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279178 to 216918. [2024-11-09 01:27:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216918 states, 216917 states have (on average 5.623229161384308) internal successors, (1219774), 216917 states have internal predecessors, (1219774), 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) [2024-11-09 01:27:52,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216918 states to 216918 states and 1219774 transitions. [2024-11-09 01:27:52,884 INFO L78 Accepts]: Start accepts. Automaton has 216918 states and 1219774 transitions. Word has length 47 [2024-11-09 01:27:52,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:52,884 INFO L471 AbstractCegarLoop]: Abstraction has 216918 states and 1219774 transitions. [2024-11-09 01:27:52,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-11-09 01:27:52,885 INFO L276 IsEmpty]: Start isEmpty. Operand 216918 states and 1219774 transitions.