./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8 --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 e252dc11a493b86cf95223e578e74371b6c05709 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:54:24,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:54:24,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:54:24,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:54:24,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:54:24,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:54:24,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:54:24,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:54:24,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:54:24,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:54:24,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:54:24,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:54:24,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:54:24,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:54:24,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:54:24,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:54:24,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:54:24,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:54:24,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:54:24,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:54:24,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:54:24,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:54:24,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:54:24,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:54:24,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:54:24,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:54:24,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:54:24,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:54:24,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:54:24,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:54:24,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:54:24,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:54:24,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:54:24,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:54:24,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:54:24,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:54:24,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:54:24,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:54:24,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:54:24,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:54:24,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:54:24,648 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:54:24,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:54:24,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:54:24,706 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:54:24,706 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:54:24,707 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:54:24,707 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:54:24,707 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:54:24,708 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:54:24,716 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:54:24,716 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:54:24,718 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:54:24,718 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:54:24,718 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:54:24,719 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:54:24,719 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:54:24,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:54:24,720 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:54:24,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:54:24,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:54:24,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:54:24,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:54:24,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:54:24,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:54:24,722 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:54:24,723 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:54:24,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:54:24,723 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:54:24,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:54:24,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:54:24,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:54:24,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:54:24,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:54:24,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:54:24,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:54:24,728 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:54:24,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:54:24,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:54:24,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:54:24,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:54:24,730 INFO L138 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_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e252dc11a493b86cf95223e578e74371b6c05709 [2021-10-13 07:54:25,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:54:25,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:54:25,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:54:25,155 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:54:25,156 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:54:25,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i [2021-10-13 07:54:25,245 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/data/355a94e09/2bde7fc6e06f4f0b8057d7a0e763cbb7/FLAG7293b3462 [2021-10-13 07:54:25,953 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:54:25,961 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i [2021-10-13 07:54:25,995 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/data/355a94e09/2bde7fc6e06f4f0b8057d7a0e763cbb7/FLAG7293b3462 [2021-10-13 07:54:26,153 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/data/355a94e09/2bde7fc6e06f4f0b8057d7a0e763cbb7 [2021-10-13 07:54:26,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:54:26,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:54:26,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:54:26,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:54:26,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:54:26,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:54:26" (1/1) ... [2021-10-13 07:54:26,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f756a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:26, skipping insertion in model container [2021-10-13 07:54:26,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:54:26" (1/1) ... [2021-10-13 07:54:26,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:54:26,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:54:26,572 WARN L228 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_54d465fa-11ac-4dd3-beb5-151ab052cfcd/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i[950,963] [2021-10-13 07:54:26,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:54:26,840 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:54:26,856 WARN L228 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_54d465fa-11ac-4dd3-beb5-151ab052cfcd/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i[950,963] [2021-10-13 07:54:26,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:54:26,947 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:54:26,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:26 WrapperNode [2021-10-13 07:54:26,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:54:26,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:54:26,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:54:26,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:54:26,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:26" (1/1) ... [2021-10-13 07:54:26,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:26" (1/1) ... [2021-10-13 07:54:27,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:54:27,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:54:27,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:54:27,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:54:27,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:26" (1/1) ... [2021-10-13 07:54:27,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:26" (1/1) ... [2021-10-13 07:54:27,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:26" (1/1) ... [2021-10-13 07:54:27,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:26" (1/1) ... [2021-10-13 07:54:27,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:26" (1/1) ... [2021-10-13 07:54:27,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:26" (1/1) ... [2021-10-13 07:54:27,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:26" (1/1) ... [2021-10-13 07:54:27,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:54:27,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:54:27,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:54:27,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:54:27,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:26" (1/1) ... [2021-10-13 07:54:27,059 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:54:27,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:54:27,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:54:27,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:54:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:54:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 07:54:27,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:54:27,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:54:27,155 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 07:54:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 07:54:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 07:54:27,156 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 07:54:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-13 07:54:27,156 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-13 07:54:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-10-13 07:54:27,157 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-10-13 07:54:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:54:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 07:54:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:54:27,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:54:27,160 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 07:54:27,710 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:54:27,714 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 07:54:27,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:27 BoogieIcfgContainer [2021-10-13 07:54:27,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:54:27,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:54:27,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:54:27,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:54:27,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:54:26" (1/3) ... [2021-10-13 07:54:27,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb5ff34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:54:27, skipping insertion in model container [2021-10-13 07:54:27,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:26" (2/3) ... [2021-10-13 07:54:27,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb5ff34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:54:27, skipping insertion in model container [2021-10-13 07:54:27,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:27" (3/3) ... [2021-10-13 07:54:27,730 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2021-10-13 07:54:27,742 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 07:54:27,743 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:54:27,743 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:54:27,743 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 07:54:27,817 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,817 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,818 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,818 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,818 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,819 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,819 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,819 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,822 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,822 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,823 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,823 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,824 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,825 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,829 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,829 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,829 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,829 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,830 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,830 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,830 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,830 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,831 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,831 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,831 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,832 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,832 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,832 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,832 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,833 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,833 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,833 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,833 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,836 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,836 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,836 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,838 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,838 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,842 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,843 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,843 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,843 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,850 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,850 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,850 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,851 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,856 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,856 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,863 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,864 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,864 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,864 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:54:27,868 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 07:54:27,938 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:54:27,947 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:54:27,947 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-13 07:54:27,977 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 07:54:27,997 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 99 transitions, 218 flow [2021-10-13 07:54:28,001 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 99 transitions, 218 flow [2021-10-13 07:54:28,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 99 transitions, 218 flow [2021-10-13 07:54:28,096 INFO L129 PetriNetUnfolder]: 2/95 cut-off events. [2021-10-13 07:54:28,096 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 07:54:28,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 2/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2021-10-13 07:54:28,107 INFO L116 LiptonReduction]: Number of co-enabled transitions 2114 [2021-10-13 07:54:32,281 INFO L131 LiptonReduction]: Checked pairs total: 3680 [2021-10-13 07:54:32,281 INFO L133 LiptonReduction]: Total number of compositions: 84 [2021-10-13 07:54:32,292 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2021-10-13 07:54:32,356 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 562 states, 561 states have (on average 3.3689839572192515) internal successors, (1890), 561 states have internal predecessors, (1890), 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) [2021-10-13 07:54:32,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 562 states, 561 states have (on average 3.3689839572192515) internal successors, (1890), 561 states have internal predecessors, (1890), 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) [2021-10-13 07:54:32,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:54:32,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:32,374 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:32,374 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 07:54:32,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:32,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1925802684, now seen corresponding path program 1 times [2021-10-13 07:54:32,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:32,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824528303] [2021-10-13 07:54:32,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:32,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:32,729 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:32,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824528303] [2021-10-13 07:54:32,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824528303] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:32,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:32,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:54:32,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661571400] [2021-10-13 07:54:32,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:54:32,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:32,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:54:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:32,760 INFO L87 Difference]: Start difference. First operand has 562 states, 561 states have (on average 3.3689839572192515) internal successors, (1890), 561 states have internal predecessors, (1890), 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, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-10-13 07:54:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:32,840 INFO L93 Difference]: Finished difference Result 526 states and 1743 transitions. [2021-10-13 07:54:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:54:32,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-10-13 07:54:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:32,878 INFO L225 Difference]: With dead ends: 526 [2021-10-13 07:54:32,878 INFO L226 Difference]: Without dead ends: 526 [2021-10-13 07:54:32,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:32,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-10-13 07:54:33,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2021-10-13 07:54:33,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 3.32) internal successors, (1743), 525 states have internal predecessors, (1743), 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) [2021-10-13 07:54:33,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2021-10-13 07:54:33,039 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2021-10-13 07:54:33,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:33,040 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2021-10-13 07:54:33,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-10-13 07:54:33,041 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2021-10-13 07:54:33,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:54:33,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:33,044 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:33,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:54:33,045 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 07:54:33,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:33,045 INFO L82 PathProgramCache]: Analyzing trace with hash -429659901, now seen corresponding path program 1 times [2021-10-13 07:54:33,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:33,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7837227] [2021-10-13 07:54:33,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:33,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:33,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:33,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7837227] [2021-10-13 07:54:33,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7837227] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:33,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:33,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:54:33,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982879041] [2021-10-13 07:54:33,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:54:33,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:33,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:54:33,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:54:33,158 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-13 07:54:33,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:33,204 INFO L93 Difference]: Finished difference Result 634 states and 2040 transitions. [2021-10-13 07:54:33,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:54:33,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 11 [2021-10-13 07:54:33,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:33,214 INFO L225 Difference]: With dead ends: 634 [2021-10-13 07:54:33,216 INFO L226 Difference]: Without dead ends: 322 [2021-10-13 07:54:33,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:33,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-13 07:54:33,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-10-13 07:54:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 3.1401869158878504) internal successors, (1008), 321 states have internal predecessors, (1008), 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) [2021-10-13 07:54:33,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1008 transitions. [2021-10-13 07:54:33,235 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1008 transitions. Word has length 11 [2021-10-13 07:54:33,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:33,236 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 1008 transitions. [2021-10-13 07:54:33,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-13 07:54:33,236 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1008 transitions. [2021-10-13 07:54:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:54:33,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:33,243 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:33,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:54:33,244 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 07:54:33,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:33,245 INFO L82 PathProgramCache]: Analyzing trace with hash -435539107, now seen corresponding path program 1 times [2021-10-13 07:54:33,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:33,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310345743] [2021-10-13 07:54:33,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:33,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:33,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:33,389 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:33,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310345743] [2021-10-13 07:54:33,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310345743] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:33,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:33,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:54:33,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819100763] [2021-10-13 07:54:33,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:54:33,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:33,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:54:33,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:33,400 INFO L87 Difference]: Start difference. First operand 322 states and 1008 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-10-13 07:54:33,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:33,410 INFO L93 Difference]: Finished difference Result 304 states and 939 transitions. [2021-10-13 07:54:33,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:54:33,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-10-13 07:54:33,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:33,414 INFO L225 Difference]: With dead ends: 304 [2021-10-13 07:54:33,414 INFO L226 Difference]: Without dead ends: 304 [2021-10-13 07:54:33,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:33,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-13 07:54:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-10-13 07:54:33,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 3.099009900990099) internal successors, (939), 303 states have internal predecessors, (939), 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) [2021-10-13 07:54:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 939 transitions. [2021-10-13 07:54:33,429 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 939 transitions. Word has length 12 [2021-10-13 07:54:33,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:33,429 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 939 transitions. [2021-10-13 07:54:33,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-10-13 07:54:33,430 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 939 transitions. [2021-10-13 07:54:33,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:54:33,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:33,434 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:33,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:54:33,437 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 07:54:33,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:33,438 INFO L82 PathProgramCache]: Analyzing trace with hash -333007795, now seen corresponding path program 1 times [2021-10-13 07:54:33,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:33,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576859718] [2021-10-13 07:54:33,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:33,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:33,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:33,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576859718] [2021-10-13 07:54:33,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576859718] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:33,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:33,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:54:33,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041193254] [2021-10-13 07:54:33,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:54:33,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:33,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:54:33,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:33,598 INFO L87 Difference]: Start difference. First operand 304 states and 939 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-10-13 07:54:33,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:33,636 INFO L93 Difference]: Finished difference Result 406 states and 1208 transitions. [2021-10-13 07:54:33,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:54:33,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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 13 [2021-10-13 07:54:33,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:33,640 INFO L225 Difference]: With dead ends: 406 [2021-10-13 07:54:33,640 INFO L226 Difference]: Without dead ends: 226 [2021-10-13 07:54:33,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:54:33,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-13 07:54:33,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-10-13 07:54:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.8933333333333335) internal successors, (651), 225 states have internal predecessors, (651), 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) [2021-10-13 07:54:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 651 transitions. [2021-10-13 07:54:33,652 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 651 transitions. Word has length 13 [2021-10-13 07:54:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:33,652 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 651 transitions. [2021-10-13 07:54:33,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-10-13 07:54:33,653 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 651 transitions. [2021-10-13 07:54:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:54:33,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:33,654 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:33,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:54:33,654 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 07:54:33,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:33,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1941284929, now seen corresponding path program 1 times [2021-10-13 07:54:33,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:33,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442138345] [2021-10-13 07:54:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:33,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:33,829 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:33,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442138345] [2021-10-13 07:54:33,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442138345] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:33,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:33,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:54:33,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513660558] [2021-10-13 07:54:33,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:54:33,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:33,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:54:33,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:54:33,833 INFO L87 Difference]: Start difference. First operand 226 states and 651 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-13 07:54:33,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:33,884 INFO L93 Difference]: Finished difference Result 287 states and 773 transitions. [2021-10-13 07:54:33,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:54:33,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-10-13 07:54:33,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:33,887 INFO L225 Difference]: With dead ends: 287 [2021-10-13 07:54:33,887 INFO L226 Difference]: Without dead ends: 206 [2021-10-13 07:54:33,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:33,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-13 07:54:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-10-13 07:54:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.726829268292683) internal successors, (559), 205 states have internal predecessors, (559), 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) [2021-10-13 07:54:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2021-10-13 07:54:33,897 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 14 [2021-10-13 07:54:33,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:33,898 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2021-10-13 07:54:33,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-13 07:54:33,898 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2021-10-13 07:54:33,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:54:33,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:33,899 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:33,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:54:33,899 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 07:54:33,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:33,900 INFO L82 PathProgramCache]: Analyzing trace with hash -279322964, now seen corresponding path program 1 times [2021-10-13 07:54:33,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:33,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079297503] [2021-10-13 07:54:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:33,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:34,040 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:34,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079297503] [2021-10-13 07:54:34,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079297503] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:34,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:34,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:54:34,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559616165] [2021-10-13 07:54:34,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:54:34,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:34,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:54:34,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:34,050 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-10-13 07:54:34,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:34,121 INFO L93 Difference]: Finished difference Result 227 states and 565 transitions. [2021-10-13 07:54:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:54:34,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 [2021-10-13 07:54:34,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:34,125 INFO L225 Difference]: With dead ends: 227 [2021-10-13 07:54:34,125 INFO L226 Difference]: Without dead ends: 162 [2021-10-13 07:54:34,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:54:34,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-13 07:54:34,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-10-13 07:54:34,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.4285714285714284) internal successors, (391), 161 states have internal predecessors, (391), 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) [2021-10-13 07:54:34,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 391 transitions. [2021-10-13 07:54:34,134 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 391 transitions. Word has length 15 [2021-10-13 07:54:34,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:34,134 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 391 transitions. [2021-10-13 07:54:34,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-10-13 07:54:34,135 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 391 transitions. [2021-10-13 07:54:34,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:54:34,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:34,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:34,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:54:34,137 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 07:54:34,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:34,144 INFO L82 PathProgramCache]: Analyzing trace with hash -955300022, now seen corresponding path program 1 times [2021-10-13 07:54:34,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:34,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877603206] [2021-10-13 07:54:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:34,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:34,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:34,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877603206] [2021-10-13 07:54:34,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877603206] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:34,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:34,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:54:34,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063802689] [2021-10-13 07:54:34,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:54:34,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:34,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:54:34,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:54:34,302 INFO L87 Difference]: Start difference. First operand 162 states and 391 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-13 07:54:34,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:34,374 INFO L93 Difference]: Finished difference Result 158 states and 360 transitions. [2021-10-13 07:54:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:54:34,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-13 07:54:34,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:34,377 INFO L225 Difference]: With dead ends: 158 [2021-10-13 07:54:34,377 INFO L226 Difference]: Without dead ends: 125 [2021-10-13 07:54:34,379 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 23.7ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:54:34,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-13 07:54:34,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-10-13 07:54:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.274193548387097) internal successors, (282), 124 states have internal predecessors, (282), 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) [2021-10-13 07:54:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 282 transitions. [2021-10-13 07:54:34,388 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 282 transitions. Word has length 16 [2021-10-13 07:54:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:34,389 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 282 transitions. [2021-10-13 07:54:34,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-13 07:54:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 282 transitions. [2021-10-13 07:54:34,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:54:34,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:34,390 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:34,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:54:34,391 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 07:54:34,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:34,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1965763280, now seen corresponding path program 1 times [2021-10-13 07:54:34,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:34,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160434139] [2021-10-13 07:54:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:34,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:34,546 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:34,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160434139] [2021-10-13 07:54:34,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160434139] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:34,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:34,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:54:34,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316106503] [2021-10-13 07:54:34,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:54:34,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:34,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:54:34,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:54:34,550 INFO L87 Difference]: Start difference. First operand 125 states and 282 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-13 07:54:34,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:34,637 INFO L93 Difference]: Finished difference Result 120 states and 270 transitions. [2021-10-13 07:54:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:54:34,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-10-13 07:54:34,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:34,640 INFO L225 Difference]: With dead ends: 120 [2021-10-13 07:54:34,640 INFO L226 Difference]: Without dead ends: 111 [2021-10-13 07:54:34,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 33.3ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:54:34,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-13 07:54:34,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-13 07:54:34,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 2.309090909090909) internal successors, (254), 110 states have internal predecessors, (254), 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) [2021-10-13 07:54:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 254 transitions. [2021-10-13 07:54:34,646 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 254 transitions. Word has length 18 [2021-10-13 07:54:34,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:34,647 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 254 transitions. [2021-10-13 07:54:34,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-13 07:54:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 254 transitions. [2021-10-13 07:54:34,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 07:54:34,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:34,648 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:34,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:54:34,649 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 07:54:34,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:34,650 INFO L82 PathProgramCache]: Analyzing trace with hash 621276387, now seen corresponding path program 1 times [2021-10-13 07:54:34,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:34,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644865465] [2021-10-13 07:54:34,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:34,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:34,737 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:34,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644865465] [2021-10-13 07:54:34,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644865465] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:34,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:34,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:54:34,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130941772] [2021-10-13 07:54:34,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:54:34,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:34,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:54:34,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:54:34,741 INFO L87 Difference]: Start difference. First operand 111 states and 254 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-10-13 07:54:34,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:34,760 INFO L93 Difference]: Finished difference Result 144 states and 327 transitions. [2021-10-13 07:54:34,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:54:34,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2021-10-13 07:54:34,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:34,762 INFO L225 Difference]: With dead ends: 144 [2021-10-13 07:54:34,762 INFO L226 Difference]: Without dead ends: 71 [2021-10-13 07:54:34,762 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-13 07:54:34,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-10-13 07:54:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.0428571428571427) internal successors, (143), 70 states have internal predecessors, (143), 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) [2021-10-13 07:54:34,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2021-10-13 07:54:34,767 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 20 [2021-10-13 07:54:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:34,769 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2021-10-13 07:54:34,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-10-13 07:54:34,769 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2021-10-13 07:54:34,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 07:54:34,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:34,770 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:34,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:54:34,771 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 07:54:34,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:34,771 INFO L82 PathProgramCache]: Analyzing trace with hash 685908083, now seen corresponding path program 2 times [2021-10-13 07:54:34,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:34,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105232690] [2021-10-13 07:54:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:34,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:34,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:34,834 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:34,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105232690] [2021-10-13 07:54:34,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105232690] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:34,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:34,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:54:34,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938408095] [2021-10-13 07:54:34,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:54:34,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:34,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:54:34,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:54:34,837 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-10-13 07:54:34,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:34,851 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2021-10-13 07:54:34,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:54:34,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2021-10-13 07:54:34,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:34,853 INFO L225 Difference]: With dead ends: 70 [2021-10-13 07:54:34,853 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:54:34,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:34,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:54:34,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:54:34,854 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) [2021-10-13 07:54:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:54:34,855 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-10-13 07:54:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:34,855 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:54:34,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-10-13 07:54:34,855 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:54:34,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:54:34,858 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:54:34,859 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 07:54:34,859 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 07:54:34,860 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 07:54:34,860 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-13 07:54:34,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 07:54:34,865 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 07:54:34,865 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:54:34,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:54:34 BasicIcfg [2021-10-13 07:54:34,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:54:34,868 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:54:34,869 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:54:34,869 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:54:34,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:27" (3/4) ... [2021-10-13 07:54:34,873 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:54:34,881 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-13 07:54:34,881 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-13 07:54:34,881 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-13 07:54:34,881 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-10-13 07:54:34,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-13 07:54:34,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:54:34,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:54:34,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:54:34,945 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:54:34,946 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:54:34,948 INFO L168 Benchmark]: Toolchain (without parser) took 8786.02 ms. Allocated memory was 96.5 MB in the beginning and 151.0 MB in the end (delta: 54.5 MB). Free memory was 61.6 MB in the beginning and 63.9 MB in the end (delta: -2.2 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:34,949 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 96.5 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:54:34,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.57 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 61.4 MB in the beginning and 87.2 MB in the end (delta: -25.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:34,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.22 ms. Allocated memory is still 121.6 MB. Free memory was 87.2 MB in the beginning and 85.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:34,951 INFO L168 Benchmark]: Boogie Preprocessor took 36.59 ms. Allocated memory is still 121.6 MB. Free memory was 85.0 MB in the beginning and 83.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:54:34,951 INFO L168 Benchmark]: RCFGBuilder took 670.99 ms. Allocated memory is still 121.6 MB. Free memory was 83.5 MB in the beginning and 70.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:34,952 INFO L168 Benchmark]: TraceAbstraction took 7147.17 ms. Allocated memory was 121.6 MB in the beginning and 151.0 MB in the end (delta: 29.4 MB). Free memory was 70.4 MB in the beginning and 67.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:34,952 INFO L168 Benchmark]: Witness Printer took 77.69 ms. Allocated memory is still 151.0 MB. Free memory was 67.0 MB in the beginning and 63.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:34,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 96.5 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 784.57 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 61.4 MB in the beginning and 87.2 MB in the end (delta: -25.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.22 ms. Allocated memory is still 121.6 MB. Free memory was 87.2 MB in the beginning and 85.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.59 ms. Allocated memory is still 121.6 MB. Free memory was 85.0 MB in the beginning and 83.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 670.99 ms. Allocated memory is still 121.6 MB. Free memory was 83.5 MB in the beginning and 70.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7147.17 ms. Allocated memory was 121.6 MB in the beginning and 151.0 MB in the end (delta: 29.4 MB). Free memory was 70.4 MB in the beginning and 67.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. * Witness Printer took 77.69 ms. Allocated memory is still 151.0 MB. Free memory was 67.0 MB in the beginning and 63.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4280.5ms, 110 PlacesBefore, 38 PlacesAfterwards, 99 TransitionsBefore, 25 TransitionsAfterwards, 2114 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 84 TotalNumberOfCompositions, 3680 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2006, positive: 1907, positive conditional: 0, positive unconditional: 1907, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1341, positive: 1303, positive conditional: 0, positive unconditional: 1303, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1341, positive: 1291, positive conditional: 0, positive unconditional: 1291, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 151, positive: 51, positive conditional: 0, positive unconditional: 51, negative: 100, negative conditional: 0, negative unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2006, positive: 604, positive conditional: 0, positive unconditional: 604, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 1341, unknown conditional: 0, unknown unconditional: 1341] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 128 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 6928.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 35.7ms, AutomataDifference: 612.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4408.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 209 SDtfs, 259 SDslu, 318 SDs, 0 SdLazy, 179 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 218.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 161.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=562occurred in iteration=0, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 221.5ms AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 51.4ms SsaConstructionTime, 381.8ms SatisfiabilityAnalysisTime, 880.5ms InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 477 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 07:54:35,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d465fa-11ac-4dd3-beb5-151ab052cfcd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...