./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/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_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:56:38,258 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:56:38,354 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:56:38,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:56:38,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:56:38,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:56:38,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:56:38,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:56:38,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:56:38,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:56:38,390 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:56:38,391 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:56:38,392 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:56:38,392 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:56:38,393 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:56:38,393 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:56:38,394 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:56:38,395 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:56:38,395 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:56:38,396 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:56:38,396 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:56:38,397 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:56:38,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:56:38,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:56:38,399 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:56:38,400 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:56:38,400 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:56:38,400 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:56:38,401 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:56:38,401 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:56:38,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:56:38,402 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:56:38,403 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:56:38,403 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:56:38,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:56:38,403 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:56:38,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:56:38,404 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:56:38,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:56:38,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:38,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:56:38,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:56:38,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:56:38,406 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:56:38,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:56:38,406 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:56:38,407 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:56:38,407 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:56:38,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:56:38,407 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_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 [2023-11-24 23:56:38,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:56:38,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:56:38,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:56:38,683 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:56:38,683 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:56:38,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2023-11-24 23:56:41,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:56:42,183 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:56:42,184 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2023-11-24 23:56:42,194 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/data/3ba11df4d/11d3018a83ca4dc4a32fd541529e605f/FLAG260e7cd85 [2023-11-24 23:56:42,209 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/data/3ba11df4d/11d3018a83ca4dc4a32fd541529e605f [2023-11-24 23:56:42,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:56:42,214 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:56:42,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:42,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:56:42,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:56:42,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:42" (1/1) ... [2023-11-24 23:56:42,224 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa7c64f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:42, skipping insertion in model container [2023-11-24 23:56:42,224 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:42" (1/1) ... [2023-11-24 23:56:42,254 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:56:42,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:42,480 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:56:42,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:42,527 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:56:42,527 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:56:42,535 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:56:42,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:42 WrapperNode [2023-11-24 23:56:42,536 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:42,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:42,537 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:56:42,537 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:56:42,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:42" (1/1) ... [2023-11-24 23:56:42,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:42" (1/1) ... [2023-11-24 23:56:42,589 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 192 [2023-11-24 23:56:42,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:42,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:56:42,592 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:56:42,592 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:56:42,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:42" (1/1) ... [2023-11-24 23:56:42,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:42" (1/1) ... [2023-11-24 23:56:42,610 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:42" (1/1) ... [2023-11-24 23:56:42,611 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:42" (1/1) ... [2023-11-24 23:56:42,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:42" (1/1) ... [2023-11-24 23:56:42,642 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:42" (1/1) ... [2023-11-24 23:56:42,644 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:42" (1/1) ... [2023-11-24 23:56:42,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:42" (1/1) ... [2023-11-24 23:56:42,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:56:42,656 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:56:42,657 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:56:42,657 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:56:42,658 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:42" (1/1) ... [2023-11-24 23:56:42,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:42,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:42,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:56:42,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:56:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:56:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:56:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:56:42,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:56:42,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 23:56:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 23:56:42,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 23:56:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 23:56:42,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 23:56:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 23:56:42,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-24 23:56:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-24 23:56:42,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:56:42,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-24 23:56:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-24 23:56:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 23:56:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 23:56:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:56:42,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:56:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:56:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:56:42,747 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 23:56:42,918 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:56:42,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:56:43,521 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:56:43,818 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:56:43,818 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-24 23:56:43,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:43 BoogieIcfgContainer [2023-11-24 23:56:43,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:56:43,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:56:43,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:56:43,830 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:56:43,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:56:42" (1/3) ... [2023-11-24 23:56:43,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397fdac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:56:43, skipping insertion in model container [2023-11-24 23:56:43,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:42" (2/3) ... [2023-11-24 23:56:43,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397fdac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:56:43, skipping insertion in model container [2023-11-24 23:56:43,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:43" (3/3) ... [2023-11-24 23:56:43,834 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2023-11-24 23:56:43,844 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 23:56:43,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:56:43,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-24 23:56:43,854 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 23:56:43,957 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-24 23:56:43,996 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 83 transitions, 201 flow [2023-11-24 23:56:55,921 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 266423 states, 265747 states have (on average 5.242083635939446) internal successors, (1393068), 266422 states have internal predecessors, (1393068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:55,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:56:55,948 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;@229858f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:56:55,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-24 23:56:56,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 266423 states, 265747 states have (on average 5.242083635939446) internal successors, (1393068), 266422 states have internal predecessors, (1393068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:56,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:56:56,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:56,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:56:56,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-24 23:56:56,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:56,392 INFO L85 PathProgramCache]: Analyzing trace with hash 665378, now seen corresponding path program 1 times [2023-11-24 23:56:56,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:56,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867482551] [2023-11-24 23:56:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:56,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:56,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:56,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867482551] [2023-11-24 23:56:56,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867482551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:56,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:56,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:56:56,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049469139] [2023-11-24 23:56:56,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:56,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:56:56,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:56,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:56:56,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:56:57,390 INFO L87 Difference]: Start difference. First operand has 266423 states, 265747 states have (on average 5.242083635939446) internal successors, (1393068), 266422 states have internal predecessors, (1393068), 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, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:03,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:03,049 INFO L93 Difference]: Finished difference Result 189092 states and 981264 transitions. [2023-11-24 23:57:03,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:57:03,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-24 23:57:03,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:06,353 INFO L225 Difference]: With dead ends: 189092 [2023-11-24 23:57:06,353 INFO L226 Difference]: Without dead ends: 189092 [2023-11-24 23:57:06,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:06,358 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:06,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 86 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:57:06,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189092 states. [2023-11-24 23:57:16,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189092 to 189092. [2023-11-24 23:57:17,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189092 states, 188803 states have (on average 5.197290297294005) internal successors, (981264), 189091 states have internal predecessors, (981264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189092 states to 189092 states and 981264 transitions. [2023-11-24 23:57:20,718 INFO L78 Accepts]: Start accepts. Automaton has 189092 states and 981264 transitions. Word has length 3 [2023-11-24 23:57:20,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:20,719 INFO L495 AbstractCegarLoop]: Abstraction has 189092 states and 981264 transitions. [2023-11-24 23:57:20,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:20,720 INFO L276 IsEmpty]: Start isEmpty. Operand 189092 states and 981264 transitions. [2023-11-24 23:57:20,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:57:20,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:20,721 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-24 23:57:20,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:57:20,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-24 23:57:20,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:20,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1651881650, now seen corresponding path program 1 times [2023-11-24 23:57:20,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:20,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333085478] [2023-11-24 23:57:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:20,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:21,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:21,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333085478] [2023-11-24 23:57:21,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333085478] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:21,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122547091] [2023-11-24 23:57:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:21,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:21,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:21,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:21,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f9966f-3de2-48ad-a2a8-67f8afbc0a48/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:57:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:21,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:57:21,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:21,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:21,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122547091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:21,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:57:21,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-24 23:57:21,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843982764] [2023-11-24 23:57:21,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:21,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:57:21,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:21,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:57:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:57:21,211 INFO L87 Difference]: Start difference. First operand 189092 states and 981264 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:25,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:25,016 INFO L93 Difference]: Finished difference Result 189091 states and 981263 transitions. [2023-11-24 23:57:25,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:57:25,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 6 [2023-11-24 23:57:25,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted.