./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:55:33,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:55:33,737 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 20:55:33,745 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:55:33,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:55:33,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:55:33,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:55:33,789 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:55:33,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:55:33,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:55:33,796 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:55:33,797 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:55:33,798 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:55:33,802 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:55:33,803 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:55:33,804 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:55:33,804 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:55:33,805 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:55:33,805 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:55:33,806 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:55:33,806 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:55:33,807 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:55:33,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:55:33,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 20:55:33,809 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:55:33,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:55:33,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:55:33,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:55:33,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 20:55:33,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:55:33,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 20:55:33,813 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:55:33,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 20:55:33,814 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:55:33,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:55:33,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:55:33,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:55:33,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:55:33,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:55:33,816 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 20:55:33,817 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:55:33,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:55:33,817 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 20:55:33,818 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:55:33,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:55:33,819 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_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db [2023-11-06 20:55:34,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:55:34,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:55:34,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:55:34,150 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:55:34,150 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:55:34,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2023-11-06 20:55:37,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:55:37,451 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:55:37,451 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2023-11-06 20:55:37,467 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/data/7ffb4761b/43fa0fef96b74f2d86a6efbf7ad17665/FLAG33421faeb [2023-11-06 20:55:37,487 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/data/7ffb4761b/43fa0fef96b74f2d86a6efbf7ad17665 [2023-11-06 20:55:37,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:55:37,497 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:55:37,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:55:37,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:55:37,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:55:37,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:55:37" (1/1) ... [2023-11-06 20:55:37,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e6f743c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:55:37, skipping insertion in model container [2023-11-06 20:55:37,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:55:37" (1/1) ... [2023-11-06 20:55:37,544 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:55:37,712 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_a1a4a93c-d435-4e33-9493-d80c7804f930/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2023-11-06 20:55:37,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:55:37,733 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:55:37,752 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_a1a4a93c-d435-4e33-9493-d80c7804f930/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2023-11-06 20:55:37,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:55:37,769 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:55:37,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:55:37 WrapperNode [2023-11-06 20:55:37,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:55:37,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:55:37,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:55:37,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:55:37,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:55:37" (1/1) ... [2023-11-06 20:55:37,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:55:37" (1/1) ... [2023-11-06 20:55:37,806 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 76 [2023-11-06 20:55:37,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:55:37,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:55:37,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:55:37,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:55:37,816 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:55:37" (1/1) ... [2023-11-06 20:55:37,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:55:37" (1/1) ... [2023-11-06 20:55:37,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:55:37" (1/1) ... [2023-11-06 20:55:37,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:55:37" (1/1) ... [2023-11-06 20:55:37,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:55:37" (1/1) ... [2023-11-06 20:55:37,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:55:37" (1/1) ... [2023-11-06 20:55:37,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:55:37" (1/1) ... [2023-11-06 20:55:37,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:55:37" (1/1) ... [2023-11-06 20:55:37,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:55:37,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:55:37,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:55:37,832 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:55:37,833 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:55:37" (1/1) ... [2023-11-06 20:55:37,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:55:37,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:55:37,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:55:37,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:55:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:55:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:55:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:55:37,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:55:38,009 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:55:38,011 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:55:38,224 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:55:38,277 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:55:38,278 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 20:55:38,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:55:38 BoogieIcfgContainer [2023-11-06 20:55:38,287 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:55:38,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:55:38,291 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:55:38,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:55:38,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:55:37" (1/3) ... [2023-11-06 20:55:38,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3ac42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:55:38, skipping insertion in model container [2023-11-06 20:55:38,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:55:37" (2/3) ... [2023-11-06 20:55:38,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3ac42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:55:38, skipping insertion in model container [2023-11-06 20:55:38,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:55:38" (3/3) ... [2023-11-06 20:55:38,298 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2023-11-06 20:55:38,315 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:55:38,315 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 20:55:38,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:55:38,368 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=LoopsAndPotentialCycles, 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;@60065703, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:55:38,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 20:55:38,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 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) [2023-11-06 20:55:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-06 20:55:38,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:55:38,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-06 20:55:38,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:55:38,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:55:38,388 INFO L85 PathProgramCache]: Analyzing trace with hash 4092472, now seen corresponding path program 1 times [2023-11-06 20:55:38,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:55:38,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833346912] [2023-11-06 20:55:38,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:55:38,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:55:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:55:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:55:38,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:55:38,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833346912] [2023-11-06 20:55:38,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833346912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:55:38,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:55:38,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:55:38,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587560988] [2023-11-06 20:55:38,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:55:38,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:55:38,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:55:38,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:55:38,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:55:38,635 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-06 20:55:38,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:55:38,754 INFO L93 Difference]: Finished difference Result 43 states and 71 transitions. [2023-11-06 20:55:38,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:55:38,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2023-11-06 20:55:38,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:55:38,766 INFO L225 Difference]: With dead ends: 43 [2023-11-06 20:55:38,767 INFO L226 Difference]: Without dead ends: 23 [2023-11-06 20:55:38,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:55:38,777 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:55:38,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 25 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:55:38,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-06 20:55:38,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-06 20:55:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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) [2023-11-06 20:55:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2023-11-06 20:55:38,846 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 4 [2023-11-06 20:55:38,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:55:38,846 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2023-11-06 20:55:38,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-06 20:55:38,847 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2023-11-06 20:55:38,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 20:55:38,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:55:38,847 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-06 20:55:38,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:55:38,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:55:38,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:55:38,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1661964703, now seen corresponding path program 1 times [2023-11-06 20:55:38,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:55:38,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966406368] [2023-11-06 20:55:38,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:55:38,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:55:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:55:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:55:39,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:55:39,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966406368] [2023-11-06 20:55:39,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966406368] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 20:55:39,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292615631] [2023-11-06 20:55:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:55:39,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:55:39,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:55:39,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 20:55:39,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 20:55:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:55:39,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 20:55:39,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:55:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:55:39,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 20:55:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 20:55:39,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292615631] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 20:55:39,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 20:55:39,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 4 [2023-11-06 20:55:39,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914595154] [2023-11-06 20:55:39,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:55:39,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:55:39,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:55:39,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:55:39,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:55:39,202 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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) [2023-11-06 20:55:39,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:55:39,274 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2023-11-06 20:55:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:55:39,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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 7 [2023-11-06 20:55:39,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:55:39,276 INFO L225 Difference]: With dead ends: 39 [2023-11-06 20:55:39,277 INFO L226 Difference]: Without dead ends: 37 [2023-11-06 20:55:39,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:55:39,279 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:55:39,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:55:39,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-06 20:55:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2023-11-06 20:55:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 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) [2023-11-06 20:55:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2023-11-06 20:55:39,304 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 49 transitions. Word has length 7 [2023-11-06 20:55:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:55:39,305 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 49 transitions. [2023-11-06 20:55:39,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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) [2023-11-06 20:55:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 49 transitions. [2023-11-06 20:55:39,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 20:55:39,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:55:39,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:55:39,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 20:55:39,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:55:39,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:55:39,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:55:39,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1990427264, now seen corresponding path program 1 times [2023-11-06 20:55:39,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:55:39,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242868356] [2023-11-06 20:55:39,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:55:39,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:55:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:55:39,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:55:39,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:55:39,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242868356] [2023-11-06 20:55:39,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242868356] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 20:55:39,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309220610] [2023-11-06 20:55:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:55:39,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:55:39,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:55:39,828 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 20:55:39,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 20:55:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:55:39,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 20:55:39,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:55:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:55:39,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 20:55:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 20:55:39,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309220610] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 20:55:39,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 20:55:39,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 5 [2023-11-06 20:55:39,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111296692] [2023-11-06 20:55:39,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:55:39,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:55:39,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:55:39,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:55:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:55:39,993 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-11-06 20:55:40,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:55:40,061 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2023-11-06 20:55:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:55:40,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 13 [2023-11-06 20:55:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:55:40,064 INFO L225 Difference]: With dead ends: 49 [2023-11-06 20:55:40,066 INFO L226 Difference]: Without dead ends: 47 [2023-11-06 20:55:40,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:55:40,068 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:55:40,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:55:40,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-06 20:55:40,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2023-11-06 20:55:40,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 44 states have internal predecessors, (64), 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) [2023-11-06 20:55:40,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2023-11-06 20:55:40,087 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 13 [2023-11-06 20:55:40,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:55:40,088 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2023-11-06 20:55:40,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-11-06 20:55:40,088 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2023-11-06 20:55:40,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 20:55:40,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:55:40,090 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:55:40,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 20:55:40,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:55:40,297 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:55:40,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:55:40,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1541907275, now seen corresponding path program 1 times [2023-11-06 20:55:40,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:55:40,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55591646] [2023-11-06 20:55:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:55:40,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:55:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:55:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 20:55:40,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:55:40,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55591646] [2023-11-06 20:55:40,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55591646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:55:40,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:55:40,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:55:40,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56894889] [2023-11-06 20:55:40,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:55:40,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:55:40,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:55:40,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:55:40,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:55:40,381 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-06 20:55:40,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:55:40,423 INFO L93 Difference]: Finished difference Result 101 states and 145 transitions. [2023-11-06 20:55:40,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:55:40,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 15 [2023-11-06 20:55:40,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:55:40,425 INFO L225 Difference]: With dead ends: 101 [2023-11-06 20:55:40,425 INFO L226 Difference]: Without dead ends: 39 [2023-11-06 20:55:40,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:55:40,427 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:55:40,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 14 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:55:40,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-06 20:55:40,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2023-11-06 20:55:40,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 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) [2023-11-06 20:55:40,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-11-06 20:55:40,435 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 15 [2023-11-06 20:55:40,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:55:40,436 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-11-06 20:55:40,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-06 20:55:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-11-06 20:55:40,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-06 20:55:40,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:55:40,437 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:55:40,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 20:55:40,438 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:55:40,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:55:40,438 INFO L85 PathProgramCache]: Analyzing trace with hash 19537942, now seen corresponding path program 1 times [2023-11-06 20:55:40,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:55:40,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217714707] [2023-11-06 20:55:40,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:55:40,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:55:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:55:40,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:55:40,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:55:40,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217714707] [2023-11-06 20:55:40,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217714707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 20:55:40,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288998315] [2023-11-06 20:55:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:55:40,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:55:40,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:55:40,527 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 20:55:40,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 20:55:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:55:40,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 20:55:40,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:55:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 20:55:40,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:55:40,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288998315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:55:40,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 20:55:40,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-06 20:55:40,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324413085] [2023-11-06 20:55:40,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:55:40,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:55:40,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:55:40,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:55:40,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:55:40,636 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-06 20:55:40,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:55:40,671 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2023-11-06 20:55:40,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:55:40,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 21 [2023-11-06 20:55:40,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:55:40,673 INFO L225 Difference]: With dead ends: 69 [2023-11-06 20:55:40,673 INFO L226 Difference]: Without dead ends: 45 [2023-11-06 20:55:40,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:55:40,675 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:55:40,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:55:40,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-06 20:55:40,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-06 20:55:40,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 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) [2023-11-06 20:55:40,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2023-11-06 20:55:40,685 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 21 [2023-11-06 20:55:40,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:55:40,686 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2023-11-06 20:55:40,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-06 20:55:40,686 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2023-11-06 20:55:40,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 20:55:40,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:55:40,688 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:55:40,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 20:55:40,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:55:40,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:55:40,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:55:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash -976326051, now seen corresponding path program 1 times [2023-11-06 20:55:40,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:55:40,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823118320] [2023-11-06 20:55:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:55:40,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:55:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:55:40,982 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 20:55:40,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:55:40,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823118320] [2023-11-06 20:55:40,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823118320] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 20:55:40,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154560528] [2023-11-06 20:55:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:55:40,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:55:40,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:55:40,985 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 20:55:41,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 20:55:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:55:41,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 20:55:41,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:55:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 20:55:41,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:55:41,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154560528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:55:41,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 20:55:41,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-06 20:55:41,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840809383] [2023-11-06 20:55:41,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:55:41,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:55:41,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:55:41,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:55:41,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:55:41,083 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-06 20:55:41,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:55:41,134 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2023-11-06 20:55:41,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:55:41,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 27 [2023-11-06 20:55:41,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:55:41,135 INFO L225 Difference]: With dead ends: 69 [2023-11-06 20:55:41,135 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 20:55:41,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:55:41,139 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:55:41,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:55:41,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 20:55:41,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 20:55:41,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:55:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 20:55:41,147 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2023-11-06 20:55:41,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:55:41,147 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 20:55:41,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-06 20:55:41,148 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 20:55:41,148 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 20:55:41,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 20:55:41,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 20:55:41,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 20:55:41,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 20:55:41,544 INFO L899 garLoopResultBuilder]: For program point L89-1(lines 65 118) no Hoare annotation was computed. [2023-11-06 20:55:41,545 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 20 152) the Hoare annotation is: true [2023-11-06 20:55:41,545 INFO L895 garLoopResultBuilder]: At program point L36(lines 36 139) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~blastFlag~0#1| 4) (<= 8640 |ULTIMATE.start_main_~s__state~0#1|)) (< |ULTIMATE.start_main_~blastFlag~0#1| 3) (and (not (= |ULTIMATE.start_main_~s__hit~0#1| 0)) (= |ULTIMATE.start_main_~s__state~0#1| 8640))) [2023-11-06 20:55:41,545 INFO L895 garLoopResultBuilder]: At program point L61(lines 61 120) the Hoare annotation is: (or (= |ULTIMATE.start_main_~s__state~0#1| 8640) (< |ULTIMATE.start_main_~blastFlag~0#1| 5)) [2023-11-06 20:55:41,545 INFO L895 garLoopResultBuilder]: At program point L57(lines 57 122) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~blastFlag~0#1| 4) (<= 8640 |ULTIMATE.start_main_~s__state~0#1|)) (< |ULTIMATE.start_main_~blastFlag~0#1| 3) (and (not (= |ULTIMATE.start_main_~s__hit~0#1| 0)) (= |ULTIMATE.start_main_~s__state~0#1| 8640))) [2023-11-06 20:55:41,546 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 150) no Hoare annotation was computed. [2023-11-06 20:55:41,546 INFO L902 garLoopResultBuilder]: At program point L148(lines 20 152) the Hoare annotation is: true [2023-11-06 20:55:41,546 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 109) no Hoare annotation was computed. [2023-11-06 20:55:41,546 INFO L895 garLoopResultBuilder]: At program point L41(lines 41 136) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~blastFlag~0#1| 4) (<= 8640 |ULTIMATE.start_main_~s__state~0#1|)) (< |ULTIMATE.start_main_~blastFlag~0#1| 3) (and (not (= |ULTIMATE.start_main_~s__hit~0#1| 0)) (= |ULTIMATE.start_main_~s__state~0#1| 8640))) [2023-11-06 20:55:41,546 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 20:55:41,546 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 20:55:41,547 INFO L899 garLoopResultBuilder]: For program point L104-1(lines 65 118) no Hoare annotation was computed. [2023-11-06 20:55:41,547 INFO L895 garLoopResultBuilder]: At program point $Ultimate##5(lines 29 146) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~blastFlag~0#1| 4) (<= 8640 |ULTIMATE.start_main_~s__state~0#1|)) (< |ULTIMATE.start_main_~blastFlag~0#1| 3) (and (not (= |ULTIMATE.start_main_~s__hit~0#1| 0)) (= |ULTIMATE.start_main_~s__state~0#1| 8640))) [2023-11-06 20:55:41,547 INFO L899 garLoopResultBuilder]: For program point L100-1(lines 65 118) no Hoare annotation was computed. [2023-11-06 20:55:41,547 INFO L899 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2023-11-06 20:55:41,547 INFO L895 garLoopResultBuilder]: At program point main_ERROR#1(lines 20 152) the Hoare annotation is: false [2023-11-06 20:55:41,551 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-06 20:55:41,553 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 20:55:41,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 08:55:41 BoogieIcfgContainer [2023-11-06 20:55:41,571 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 20:55:41,572 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 20:55:41,572 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 20:55:41,573 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 20:55:41,573 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:55:38" (3/4) ... [2023-11-06 20:55:41,575 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 20:55:41,587 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-06 20:55:41,588 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 20:55:41,588 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 20:55:41,588 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 20:55:41,681 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/witness.graphml.graphml [2023-11-06 20:55:41,682 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/witness.graphml.yaml [2023-11-06 20:55:41,682 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 20:55:41,683 INFO L158 Benchmark]: Toolchain (without parser) took 4186.03ms. Allocated memory is still 169.9MB. Free memory was 124.6MB in the beginning and 116.8MB in the end (delta: 7.7MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2023-11-06 20:55:41,683 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 136.3MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:55:41,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.23ms. Allocated memory is still 169.9MB. Free memory was 124.6MB in the beginning and 113.5MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 20:55:41,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.71ms. Allocated memory is still 169.9MB. Free memory was 113.5MB in the beginning and 112.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:55:41,684 INFO L158 Benchmark]: Boogie Preprocessor took 22.87ms. Allocated memory is still 169.9MB. Free memory was 112.0MB in the beginning and 110.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:55:41,685 INFO L158 Benchmark]: RCFGBuilder took 456.36ms. Allocated memory is still 169.9MB. Free memory was 110.9MB in the beginning and 97.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 20:55:41,685 INFO L158 Benchmark]: TraceAbstraction took 3281.42ms. Allocated memory is still 169.9MB. Free memory was 96.8MB in the beginning and 121.0MB in the end (delta: -24.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:55:41,686 INFO L158 Benchmark]: Witness Printer took 110.18ms. Allocated memory is still 169.9MB. Free memory was 121.0MB in the beginning and 116.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 20:55:41,689 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 136.3MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.23ms. Allocated memory is still 169.9MB. Free memory was 124.6MB in the beginning and 113.5MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.71ms. Allocated memory is still 169.9MB. Free memory was 113.5MB in the beginning and 112.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.87ms. Allocated memory is still 169.9MB. Free memory was 112.0MB in the beginning and 110.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 456.36ms. Allocated memory is still 169.9MB. Free memory was 110.9MB in the beginning and 97.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3281.42ms. Allocated memory is still 169.9MB. Free memory was 96.8MB in the beginning and 121.0MB in the end (delta: -24.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 110.18ms. Allocated memory is still 169.9MB. Free memory was 121.0MB in the beginning and 116.8MB 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: 150]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 103 IncrementalHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 73 mSDtfsCounter, 103 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=3, InterpolantAutomatonStates: 18, 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, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 48 NumberOfFragments, 86 HoareAnnotationTreeSize, 8 FomulaSimplifications, 387 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 51 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 337 SizeOfPredicates, 0 NumberOfNonLiveVariables, 213 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 84/100 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 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((blastFlag <= 4) && (8640 <= s__state)) || (blastFlag < 3)) || (!((s__hit == 0)) && (s__state == 8640))) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: ((s__state == 8640) || (blastFlag < 5)) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((blastFlag <= 4) && (8640 <= s__state)) || (blastFlag < 3)) || (!((s__hit == 0)) && (s__state == 8640))) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((blastFlag <= 4) && (8640 <= s__state)) || (blastFlag < 3)) || (!((s__hit == 0)) && (s__state == 8640))) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((blastFlag <= 4) && (8640 <= s__state)) || (blastFlag < 3)) || (!((s__hit == 0)) && (s__state == 8640))) RESULT: Ultimate proved your program to be correct! [2023-11-06 20:55:41,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a4a93c-d435-4e33-9493-d80c7804f930/bin/utaipan-verify-FOvIYxoinp/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