./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix044.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix044.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P --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 bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:28:22,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:28:22,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:28:22,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:28:22,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:28:22,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:28:22,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:28:22,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:28:22,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:28:22,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:28:22,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:28:22,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:28:22,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:28:22,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:28:22,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:28:22,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:28:22,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:28:22,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:28:22,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:28:22,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:28:22,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:28:22,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:28:22,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:28:22,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:28:22,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:28:22,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:28:22,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:28:22,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:28:22,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:28:22,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:28:22,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:28:22,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:28:22,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:28:22,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:28:22,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:28:22,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:28:22,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:28:22,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:28:22,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:28:22,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:28:22,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:28:22,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:28:22,238 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:28:22,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:28:22,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:28:22,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:28:22,241 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:28:22,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:28:22,249 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:28:22,250 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:28:22,250 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:28:22,250 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:28:22,252 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:28:22,252 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:28:22,252 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:28:22,253 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:28:22,253 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:28:22,253 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:28:22,254 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:28:22,254 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:28:22,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:28:22,255 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:28:22,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:28:22,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:28:22,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:28:22,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:28:22,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:28:22,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:28:22,259 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:28:22,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:28:22,260 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:28:22,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:28:22,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:28:22,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:28:22,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:28:22,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:28:22,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:28:22,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:28:22,263 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:28:22,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:28:22,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:28:22,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:28:22,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:28:22,265 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_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 [2021-11-21 01:28:22,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:28:22,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:28:22,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:28:22,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:28:22,630 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:28:22,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/pthread-wmm/mix044.opt.i [2021-11-21 01:28:22,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/data/b1931aa0d/04a0f97e2c0f4386b35976f59db576d2/FLAG5fdb73ec2 [2021-11-21 01:28:23,403 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:28:23,404 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/sv-benchmarks/c/pthread-wmm/mix044.opt.i [2021-11-21 01:28:23,423 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/data/b1931aa0d/04a0f97e2c0f4386b35976f59db576d2/FLAG5fdb73ec2 [2021-11-21 01:28:23,669 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/data/b1931aa0d/04a0f97e2c0f4386b35976f59db576d2 [2021-11-21 01:28:23,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:28:23,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:28:23,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:28:23,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:28:23,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:28:23,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:28:23" (1/1) ... [2021-11-21 01:28:23,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b4094c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:23, skipping insertion in model container [2021-11-21 01:28:23,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:28:23" (1/1) ... [2021-11-21 01:28:23,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:28:23,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:28:24,034 WARN L230 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_742184ca-ea25-4307-a565-1f33c4adc4c7/sv-benchmarks/c/pthread-wmm/mix044.opt.i[944,957] [2021-11-21 01:28:24,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:28:24,406 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:28:24,421 WARN L230 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_742184ca-ea25-4307-a565-1f33c4adc4c7/sv-benchmarks/c/pthread-wmm/mix044.opt.i[944,957] [2021-11-21 01:28:24,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:28:24,588 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:28:24,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:24 WrapperNode [2021-11-21 01:28:24,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:28:24,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:28:24,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:28:24,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:28:24,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:24" (1/1) ... [2021-11-21 01:28:24,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:24" (1/1) ... [2021-11-21 01:28:24,678 INFO L137 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 298 [2021-11-21 01:28:24,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:28:24,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:28:24,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:28:24,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:28:24,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:24" (1/1) ... [2021-11-21 01:28:24,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:24" (1/1) ... [2021-11-21 01:28:24,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:24" (1/1) ... [2021-11-21 01:28:24,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:24" (1/1) ... [2021-11-21 01:28:24,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:24" (1/1) ... [2021-11-21 01:28:24,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:24" (1/1) ... [2021-11-21 01:28:24,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:24" (1/1) ... [2021-11-21 01:28:24,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:28:24,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:28:24,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:28:24,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:28:24,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:24" (1/1) ... [2021-11-21 01:28:24,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:28:24,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:28:24,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:28:24,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:28:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:28:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-21 01:28:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:28:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:28:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:28:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-21 01:28:24,909 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-21 01:28:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-21 01:28:24,910 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-21 01:28:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-21 01:28:24,910 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-21 01:28:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-11-21 01:28:24,911 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-11-21 01:28:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:28:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-21 01:28:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:28:24,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:28:24,914 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-21 01:28:25,111 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:28:25,113 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:28:25,786 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:28:26,380 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:28:26,381 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:28:26,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:26 BoogieIcfgContainer [2021-11-21 01:28:26,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:28:26,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:28:26,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:28:26,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:28:26,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:28:23" (1/3) ... [2021-11-21 01:28:26,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3637043a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:28:26, skipping insertion in model container [2021-11-21 01:28:26,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:24" (2/3) ... [2021-11-21 01:28:26,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3637043a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:28:26, skipping insertion in model container [2021-11-21 01:28:26,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:26" (3/3) ... [2021-11-21 01:28:26,395 INFO L111 eAbstractionObserver]: Analyzing ICFG mix044.opt.i [2021-11-21 01:28:26,403 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-21 01:28:26,404 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:28:26,404 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:28:26,404 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-21 01:28:26,471 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,472 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,472 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,472 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,472 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,473 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,473 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,473 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,474 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,475 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,475 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,475 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,476 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,476 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,476 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,476 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,477 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,477 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,478 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,478 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,478 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,478 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,479 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,479 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,480 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,480 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,480 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,480 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,480 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,481 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,481 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,481 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,481 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,482 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,482 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,482 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,483 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,483 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,483 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,484 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,484 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,484 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,484 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,484 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,485 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,485 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,486 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,486 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,486 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,486 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,487 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,487 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,487 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,488 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,488 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,488 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,488 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,489 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,489 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,490 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,490 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,490 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,491 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,491 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,492 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,492 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,492 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,493 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,493 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,494 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,495 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,498 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,498 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,499 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,499 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,500 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,500 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,501 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,501 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,516 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,517 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,517 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,518 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,518 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,522 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,522 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,523 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,523 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,524 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,524 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,525 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,525 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,525 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,526 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,526 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,526 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,527 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,527 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,528 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,528 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,529 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,529 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,530 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,530 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,530 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,531 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,531 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,531 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,532 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,532 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,532 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,533 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,533 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,533 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:28:26,534 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-21 01:28:26,591 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:28:26,599 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:28:26,600 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-21 01:28:26,618 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-21 01:28:26,635 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 137 transitions, 294 flow [2021-11-21 01:28:26,638 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 137 transitions, 294 flow [2021-11-21 01:28:26,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2021-11-21 01:28:26,707 INFO L129 PetriNetUnfolder]: 2/133 cut-off events. [2021-11-21 01:28:26,708 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-21 01:28:26,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-11-21 01:28:26,720 INFO L116 LiptonReduction]: Number of co-enabled transitions 3168 [2021-11-21 01:28:48,146 INFO L131 LiptonReduction]: Checked pairs total: 6552 [2021-11-21 01:28:48,146 INFO L133 LiptonReduction]: Total number of compositions: 114 [2021-11-21 01:28:48,168 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 32 transitions, 84 flow [2021-11-21 01:28:48,349 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2602 states, 2599 states have (on average 3.841477491342824) internal successors, (9984), 2601 states have internal predecessors, (9984), 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) [2021-11-21 01:28:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 2602 states, 2599 states have (on average 3.841477491342824) internal successors, (9984), 2601 states have internal predecessors, (9984), 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) [2021-11-21 01:28:48,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:28:48,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:48,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:48,372 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 01:28:48,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:48,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2025843606, now seen corresponding path program 1 times [2021-11-21 01:28:48,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:48,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53808662] [2021-11-21 01:28:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:48,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:48,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:48,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53808662] [2021-11-21 01:28:48,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53808662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:48,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:48,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:28:48,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499886301] [2021-11-21 01:28:48,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:48,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:28:48,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:48,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:28:48,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:28:48,781 INFO L87 Difference]: Start difference. First operand has 2602 states, 2599 states have (on average 3.841477491342824) internal successors, (9984), 2601 states have internal predecessors, (9984), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-21 01:28:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:48,956 INFO L93 Difference]: Finished difference Result 2202 states and 8344 transitions. [2021-11-21 01:28:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:28:48,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-21 01:28:48,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:49,066 INFO L225 Difference]: With dead ends: 2202 [2021-11-21 01:28:49,067 INFO L226 Difference]: Without dead ends: 2122 [2021-11-21 01:28:49,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:28:49,076 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:49,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 10 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:28:49,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-11-21 01:28:49,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2122. [2021-11-21 01:28:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 3.8095238095238093) internal successors, (8080), 2121 states have internal predecessors, (8080), 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) [2021-11-21 01:28:49,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 8080 transitions. [2021-11-21 01:28:49,269 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 8080 transitions. Word has length 9 [2021-11-21 01:28:49,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:49,271 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 8080 transitions. [2021-11-21 01:28:49,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-21 01:28:49,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 8080 transitions. [2021-11-21 01:28:49,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:28:49,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:49,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:49,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:28:49,276 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 01:28:49,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:49,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1215613815, now seen corresponding path program 1 times [2021-11-21 01:28:49,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:49,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818727264] [2021-11-21 01:28:49,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:49,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:49,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:49,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818727264] [2021-11-21 01:28:49,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818727264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:49,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:49,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:28:49,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92908591] [2021-11-21 01:28:49,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:49,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:28:49,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:49,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:28:49,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:28:49,566 INFO L87 Difference]: Start difference. First operand 2122 states and 8080 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:28:49,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:49,740 INFO L93 Difference]: Finished difference Result 2062 states and 7802 transitions. [2021-11-21 01:28:49,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:28:49,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:28:49,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:49,767 INFO L225 Difference]: With dead ends: 2062 [2021-11-21 01:28:49,768 INFO L226 Difference]: Without dead ends: 2062 [2021-11-21 01:28:49,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:28:49,772 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:49,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:28:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2021-11-21 01:28:49,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 2062. [2021-11-21 01:28:49,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 2061 states have (on average 3.7855409995147986) internal successors, (7802), 2061 states have internal predecessors, (7802), 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) [2021-11-21 01:28:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 7802 transitions. [2021-11-21 01:28:49,885 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 7802 transitions. Word has length 11 [2021-11-21 01:28:49,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:49,886 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 7802 transitions. [2021-11-21 01:28:49,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:28:49,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 7802 transitions. [2021-11-21 01:28:49,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:28:49,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:49,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:49,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:28:49,895 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 01:28:49,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:49,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1922165358, now seen corresponding path program 1 times [2021-11-21 01:28:49,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:49,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936123157] [2021-11-21 01:28:49,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:49,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:50,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:50,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936123157] [2021-11-21 01:28:50,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936123157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:50,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:50,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:28:50,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133256382] [2021-11-21 01:28:50,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:50,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:28:50,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:50,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:28:50,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:28:50,078 INFO L87 Difference]: Start difference. First operand 2062 states and 7802 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) [2021-11-21 01:28:50,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:50,162 INFO L93 Difference]: Finished difference Result 1922 states and 7210 transitions. [2021-11-21 01:28:50,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:28:50,163 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 [2021-11-21 01:28:50,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:50,185 INFO L225 Difference]: With dead ends: 1922 [2021-11-21 01:28:50,186 INFO L226 Difference]: Without dead ends: 1922 [2021-11-21 01:28:50,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:28:50,187 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:50,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:28:50,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2021-11-21 01:28:50,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1922. [2021-11-21 01:28:50,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 3.7532535137948986) internal successors, (7210), 1921 states have internal predecessors, (7210), 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) [2021-11-21 01:28:50,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 7210 transitions. [2021-11-21 01:28:50,285 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 7210 transitions. Word has length 12 [2021-11-21 01:28:50,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:50,286 INFO L470 AbstractCegarLoop]: Abstraction has 1922 states and 7210 transitions. [2021-11-21 01:28:50,286 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) [2021-11-21 01:28:50,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 7210 transitions. [2021-11-21 01:28:50,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 01:28:50,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:50,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:50,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:28:50,290 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 01:28:50,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash 364977131, now seen corresponding path program 1 times [2021-11-21 01:28:50,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:50,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125304894] [2021-11-21 01:28:50,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:50,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:50,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:50,596 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:50,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125304894] [2021-11-21 01:28:50,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125304894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:50,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:50,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:28:50,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264840095] [2021-11-21 01:28:50,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:50,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:28:50,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:50,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:28:50,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:28:50,605 INFO L87 Difference]: Start difference. First operand 1922 states and 7210 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-21 01:28:50,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:50,768 INFO L93 Difference]: Finished difference Result 2126 states and 7894 transitions. [2021-11-21 01:28:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:28:50,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 [2021-11-21 01:28:50,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:50,794 INFO L225 Difference]: With dead ends: 2126 [2021-11-21 01:28:50,794 INFO L226 Difference]: Without dead ends: 2126 [2021-11-21 01:28:50,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:28:50,800 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 49 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:50,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 13 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:28:50,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2021-11-21 01:28:50,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 2126. [2021-11-21 01:28:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 2125 states have (on average 3.7148235294117646) internal successors, (7894), 2125 states have internal predecessors, (7894), 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) [2021-11-21 01:28:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 7894 transitions. [2021-11-21 01:28:50,948 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 7894 transitions. Word has length 14 [2021-11-21 01:28:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:50,949 INFO L470 AbstractCegarLoop]: Abstraction has 2126 states and 7894 transitions. [2021-11-21 01:28:50,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-21 01:28:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 7894 transitions. [2021-11-21 01:28:50,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 01:28:50,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:50,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:50,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:28:50,956 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 01:28:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:50,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1444378358, now seen corresponding path program 1 times [2021-11-21 01:28:50,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:50,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038639359] [2021-11-21 01:28:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:50,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:51,163 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:51,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038639359] [2021-11-21 01:28:51,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038639359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:51,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:51,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:28:51,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842402125] [2021-11-21 01:28:51,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:51,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:28:51,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:51,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:28:51,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:28:51,167 INFO L87 Difference]: Start difference. First operand 2126 states and 7894 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2021-11-21 01:28:51,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:51,348 INFO L93 Difference]: Finished difference Result 2246 states and 7613 transitions. [2021-11-21 01:28:51,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:28:51,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 [2021-11-21 01:28:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:51,370 INFO L225 Difference]: With dead ends: 2246 [2021-11-21 01:28:51,370 INFO L226 Difference]: Without dead ends: 1670 [2021-11-21 01:28:51,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:28:51,372 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:51,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 25 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:28:51,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-11-21 01:28:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1670. [2021-11-21 01:28:51,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1669 states have (on average 3.3636908328340325) internal successors, (5614), 1669 states have internal predecessors, (5614), 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) [2021-11-21 01:28:51,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 5614 transitions. [2021-11-21 01:28:51,451 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 5614 transitions. Word has length 16 [2021-11-21 01:28:51,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:51,452 INFO L470 AbstractCegarLoop]: Abstraction has 1670 states and 5614 transitions. [2021-11-21 01:28:51,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2021-11-21 01:28:51,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 5614 transitions. [2021-11-21 01:28:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 01:28:51,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:51,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:51,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:28:51,458 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 01:28:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:51,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1213340727, now seen corresponding path program 1 times [2021-11-21 01:28:51,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:51,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728466147] [2021-11-21 01:28:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:51,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:51,677 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:51,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728466147] [2021-11-21 01:28:51,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728466147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:51,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:51,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:28:51,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650772385] [2021-11-21 01:28:51,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:51,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:28:51,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:51,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:28:51,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:28:51,681 INFO L87 Difference]: Start difference. First operand 1670 states and 5614 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-11-21 01:28:51,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:51,879 INFO L93 Difference]: Finished difference Result 1462 states and 4516 transitions. [2021-11-21 01:28:51,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:28:51,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-11-21 01:28:51,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:51,893 INFO L225 Difference]: With dead ends: 1462 [2021-11-21 01:28:51,893 INFO L226 Difference]: Without dead ends: 1093 [2021-11-21 01:28:51,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:28:51,896 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 62 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:51,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 35 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:28:51,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2021-11-21 01:28:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1093. [2021-11-21 01:28:51,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 3.0274725274725274) internal successors, (3306), 1092 states have internal predecessors, (3306), 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) [2021-11-21 01:28:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 3306 transitions. [2021-11-21 01:28:51,951 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 3306 transitions. Word has length 17 [2021-11-21 01:28:51,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:51,952 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 3306 transitions. [2021-11-21 01:28:51,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-11-21 01:28:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 3306 transitions. [2021-11-21 01:28:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 01:28:51,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:51,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:51,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:28:51,957 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 01:28:51,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:51,958 INFO L85 PathProgramCache]: Analyzing trace with hash 554280561, now seen corresponding path program 1 times [2021-11-21 01:28:51,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:51,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632357737] [2021-11-21 01:28:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:51,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:52,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:52,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632357737] [2021-11-21 01:28:52,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632357737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:52,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:52,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:28:52,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727915525] [2021-11-21 01:28:52,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:52,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:28:52,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:52,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:28:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:28:52,162 INFO L87 Difference]: Start difference. First operand 1093 states and 3306 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:28:52,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:52,339 INFO L93 Difference]: Finished difference Result 953 states and 2847 transitions. [2021-11-21 01:28:52,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:28:52,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-21 01:28:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:52,349 INFO L225 Difference]: With dead ends: 953 [2021-11-21 01:28:52,349 INFO L226 Difference]: Without dead ends: 830 [2021-11-21 01:28:52,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:28:52,350 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 109 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:52,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 40 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:28:52,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-11-21 01:28:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2021-11-21 01:28:52,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 3.0361881785283473) internal successors, (2517), 829 states have internal predecessors, (2517), 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) [2021-11-21 01:28:52,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 2517 transitions. [2021-11-21 01:28:52,382 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 2517 transitions. Word has length 19 [2021-11-21 01:28:52,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:52,382 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 2517 transitions. [2021-11-21 01:28:52,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:28:52,383 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 2517 transitions. [2021-11-21 01:28:52,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:28:52,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:52,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:52,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:28:52,387 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 01:28:52,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:52,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2023774137, now seen corresponding path program 1 times [2021-11-21 01:28:52,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:52,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372229857] [2021-11-21 01:28:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:52,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:52,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:52,493 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:52,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372229857] [2021-11-21 01:28:52,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372229857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:52,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:52,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:28:52,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344008197] [2021-11-21 01:28:52,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:52,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:28:52,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:52,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:28:52,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:28:52,495 INFO L87 Difference]: Start difference. First operand 830 states and 2517 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-21 01:28:52,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:52,619 INFO L93 Difference]: Finished difference Result 1151 states and 3382 transitions. [2021-11-21 01:28:52,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:28:52,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2021-11-21 01:28:52,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:52,628 INFO L225 Difference]: With dead ends: 1151 [2021-11-21 01:28:52,628 INFO L226 Difference]: Without dead ends: 831 [2021-11-21 01:28:52,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:28:52,631 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:52,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 21 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:28:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2021-11-21 01:28:52,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 793. [2021-11-21 01:28:52,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 792 states have (on average 2.869949494949495) internal successors, (2273), 792 states have internal predecessors, (2273), 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) [2021-11-21 01:28:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 2273 transitions. [2021-11-21 01:28:52,667 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 2273 transitions. Word has length 22 [2021-11-21 01:28:52,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:52,667 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 2273 transitions. [2021-11-21 01:28:52,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-21 01:28:52,668 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 2273 transitions. [2021-11-21 01:28:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:28:52,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:52,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:52,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:28:52,675 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 01:28:52,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1655438659, now seen corresponding path program 2 times [2021-11-21 01:28:52,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:52,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804893110] [2021-11-21 01:28:52,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:52,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:52,814 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:52,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804893110] [2021-11-21 01:28:52,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804893110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:52,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:52,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:28:52,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276632133] [2021-11-21 01:28:52,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:52,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:28:52,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:52,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:28:52,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:28:52,817 INFO L87 Difference]: Start difference. First operand 793 states and 2273 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-11-21 01:28:53,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:53,026 INFO L93 Difference]: Finished difference Result 1020 states and 2848 transitions. [2021-11-21 01:28:53,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:28:53,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2021-11-21 01:28:53,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:53,033 INFO L225 Difference]: With dead ends: 1020 [2021-11-21 01:28:53,033 INFO L226 Difference]: Without dead ends: 619 [2021-11-21 01:28:53,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:28:53,034 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 65 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:53,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 41 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:28:53,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-11-21 01:28:53,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 616. [2021-11-21 01:28:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 2.6422764227642275) internal successors, (1625), 615 states have internal predecessors, (1625), 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) [2021-11-21 01:28:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1625 transitions. [2021-11-21 01:28:53,065 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1625 transitions. Word has length 22 [2021-11-21 01:28:53,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:53,067 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 1625 transitions. [2021-11-21 01:28:53,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-11-21 01:28:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1625 transitions. [2021-11-21 01:28:53,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:28:53,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:53,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:53,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:28:53,071 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 01:28:53,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:53,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1483962205, now seen corresponding path program 3 times [2021-11-21 01:28:53,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:53,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094196261] [2021-11-21 01:28:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:53,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:53,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:53,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094196261] [2021-11-21 01:28:53,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094196261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:53,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:53,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:28:53,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606957229] [2021-11-21 01:28:53,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:53,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:28:53,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:53,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:28:53,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:28:53,203 INFO L87 Difference]: Start difference. First operand 616 states and 1625 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-11-21 01:28:53,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:53,347 INFO L93 Difference]: Finished difference Result 590 states and 1573 transitions. [2021-11-21 01:28:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:28:53,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2021-11-21 01:28:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:53,350 INFO L225 Difference]: With dead ends: 590 [2021-11-21 01:28:53,350 INFO L226 Difference]: Without dead ends: 208 [2021-11-21 01:28:53,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:28:53,351 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 97 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:53,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 32 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:28:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-21 01:28:53,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 184. [2021-11-21 01:28:53,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.480874316939891) internal successors, (454), 183 states have internal predecessors, (454), 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) [2021-11-21 01:28:53,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 454 transitions. [2021-11-21 01:28:53,358 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 454 transitions. Word has length 22 [2021-11-21 01:28:53,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:53,358 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 454 transitions. [2021-11-21 01:28:53,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-11-21 01:28:53,358 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 454 transitions. [2021-11-21 01:28:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 01:28:53,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:53,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:53,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:28:53,360 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 01:28:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1959492556, now seen corresponding path program 1 times [2021-11-21 01:28:53,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:53,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654605366] [2021-11-21 01:28:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:53,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:53,471 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:53,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654605366] [2021-11-21 01:28:53,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654605366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:53,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:53,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:28:53,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114495983] [2021-11-21 01:28:53,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:53,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:28:53,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:53,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:28:53,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:28:53,473 INFO L87 Difference]: Start difference. First operand 184 states and 454 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-11-21 01:28:53,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:53,606 INFO L93 Difference]: Finished difference Result 234 states and 572 transitions. [2021-11-21 01:28:53,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:28:53,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2021-11-21 01:28:53,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:53,607 INFO L225 Difference]: With dead ends: 234 [2021-11-21 01:28:53,607 INFO L226 Difference]: Without dead ends: 92 [2021-11-21 01:28:53,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:28:53,608 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 47 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:53,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 26 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:28:53,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-21 01:28:53,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-11-21 01:28:53,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.1758241758241756) internal successors, (198), 91 states have internal predecessors, (198), 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) [2021-11-21 01:28:53,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 198 transitions. [2021-11-21 01:28:53,612 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 198 transitions. Word has length 26 [2021-11-21 01:28:53,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:53,613 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 198 transitions. [2021-11-21 01:28:53,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-11-21 01:28:53,613 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 198 transitions. [2021-11-21 01:28:53,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 01:28:53,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:53,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:53,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:28:53,614 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 01:28:53,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:53,614 INFO L85 PathProgramCache]: Analyzing trace with hash 751775604, now seen corresponding path program 2 times [2021-11-21 01:28:53,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:53,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238125961] [2021-11-21 01:28:53,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:53,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:54,064 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:54,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238125961] [2021-11-21 01:28:54,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238125961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:54,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:54,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 01:28:54,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180267213] [2021-11-21 01:28:54,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:54,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:28:54,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:54,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:28:54,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:28:54,066 INFO L87 Difference]: Start difference. First operand 92 states and 198 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-11-21 01:28:54,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:54,302 INFO L93 Difference]: Finished difference Result 159 states and 332 transitions. [2021-11-21 01:28:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:28:54,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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 26 [2021-11-21 01:28:54,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:54,304 INFO L225 Difference]: With dead ends: 159 [2021-11-21 01:28:54,304 INFO L226 Difference]: Without dead ends: 105 [2021-11-21 01:28:54,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:28:54,305 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 35 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:54,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 38 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:28:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-21 01:28:54,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 80. [2021-11-21 01:28:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.050632911392405) internal successors, (162), 79 states have internal predecessors, (162), 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) [2021-11-21 01:28:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 162 transitions. [2021-11-21 01:28:54,310 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 162 transitions. Word has length 26 [2021-11-21 01:28:54,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:54,310 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 162 transitions. [2021-11-21 01:28:54,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-11-21 01:28:54,310 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 162 transitions. [2021-11-21 01:28:54,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 01:28:54,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:54,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:54,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:28:54,312 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 01:28:54,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:54,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1490567244, now seen corresponding path program 3 times [2021-11-21 01:28:54,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:54,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469681106] [2021-11-21 01:28:54,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:54,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:28:54,395 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:28:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:28:54,495 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:28:54,495 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:28:54,497 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-21 01:28:54,499 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-21 01:28:54,499 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 7 remaining) [2021-11-21 01:28:54,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 7 remaining) [2021-11-21 01:28:54,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 7 remaining) [2021-11-21 01:28:54,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION (1 of 7 remaining) [2021-11-21 01:28:54,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-21 01:28:54,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 01:28:54,503 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:54,509 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-21 01:28:54,509 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:28:54,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:28:54 BasicIcfg [2021-11-21 01:28:54,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:28:54,650 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:28:54,650 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:28:54,650 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:28:54,651 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:26" (3/4) ... [2021-11-21 01:28:54,652 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 01:28:54,806 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:28:54,806 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:28:54,807 INFO L158 Benchmark]: Toolchain (without parser) took 31133.45ms. Allocated memory was 107.0MB in the beginning and 247.5MB in the end (delta: 140.5MB). Free memory was 64.1MB in the beginning and 123.1MB in the end (delta: -59.0MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. [2021-11-21 01:28:54,807 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 107.0MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:28:54,808 INFO L158 Benchmark]: CACSL2BoogieTranslator took 909.47ms. Allocated memory is still 107.0MB. Free memory was 63.9MB in the beginning and 68.0MB in the end (delta: -4.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-11-21 01:28:54,808 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.99ms. Allocated memory is still 107.0MB. Free memory was 68.0MB in the beginning and 65.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:28:54,809 INFO L158 Benchmark]: Boogie Preprocessor took 93.65ms. Allocated memory is still 107.0MB. Free memory was 65.1MB in the beginning and 62.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:28:54,812 INFO L158 Benchmark]: RCFGBuilder took 1597.85ms. Allocated memory was 107.0MB in the beginning and 132.1MB in the end (delta: 25.2MB). Free memory was 62.7MB in the beginning and 63.0MB in the end (delta: -326.3kB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2021-11-21 01:28:54,813 INFO L158 Benchmark]: TraceAbstraction took 28263.30ms. Allocated memory was 132.1MB in the beginning and 247.5MB in the end (delta: 115.3MB). Free memory was 62.3MB in the beginning and 139.8MB in the end (delta: -77.5MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2021-11-21 01:28:54,814 INFO L158 Benchmark]: Witness Printer took 156.60ms. Allocated memory is still 247.5MB. Free memory was 139.8MB in the beginning and 123.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-21 01:28:54,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 107.0MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 909.47ms. Allocated memory is still 107.0MB. Free memory was 63.9MB in the beginning and 68.0MB in the end (delta: -4.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.99ms. Allocated memory is still 107.0MB. Free memory was 68.0MB in the beginning and 65.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.65ms. Allocated memory is still 107.0MB. Free memory was 65.1MB in the beginning and 62.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1597.85ms. Allocated memory was 107.0MB in the beginning and 132.1MB in the end (delta: 25.2MB). Free memory was 62.7MB in the beginning and 63.0MB in the end (delta: -326.3kB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. * TraceAbstraction took 28263.30ms. Allocated memory was 132.1MB in the beginning and 247.5MB in the end (delta: 115.3MB). Free memory was 62.3MB in the beginning and 139.8MB in the end (delta: -77.5MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. * Witness Printer took 156.60ms. Allocated memory is still 247.5MB. Free memory was 139.8MB in the beginning and 123.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21.5s, 148 PlacesBefore, 45 PlacesAfterwards, 137 TransitionsBefore, 32 TransitionsAfterwards, 3168 CoEnabledTransitionPairs, 6 FixpointIterations, 46 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 114 TotalNumberOfCompositions, 6552 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3129, positive: 2959, positive conditional: 0, positive unconditional: 2959, negative: 170, negative conditional: 0, negative unconditional: 170, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1999, positive: 1913, positive conditional: 0, positive unconditional: 1913, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1999, positive: 1898, positive conditional: 0, positive unconditional: 1898, negative: 101, negative conditional: 0, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 101, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1368, positive: 78, positive conditional: 0, positive unconditional: 78, negative: 1290, negative conditional: 0, negative unconditional: 1290, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3129, positive: 1046, positive conditional: 0, positive unconditional: 1046, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 1999, unknown conditional: 0, unknown unconditional: 1999] , Statistics on independence cache: Total cache size (in pairs): 190, Positive cache size: 167, Positive conditional cache size: 0, Positive unconditional cache size: 167, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int __unbuffered_p3_EBX = 0; [L718] 0 int a = 0; [L720] 0 int b = 0; [L721] 0 _Bool main$tmp_guard0; [L722] 0 _Bool main$tmp_guard1; [L724] 0 int x = 0; [L726] 0 int y = 0; [L728] 0 int z = 0; [L729] 0 _Bool z$flush_delayed; [L730] 0 int z$mem_tmp; [L731] 0 _Bool z$r_buff0_thd0; [L732] 0 _Bool z$r_buff0_thd1; [L733] 0 _Bool z$r_buff0_thd2; [L734] 0 _Bool z$r_buff0_thd3; [L735] 0 _Bool z$r_buff0_thd4; [L736] 0 _Bool z$r_buff1_thd0; [L737] 0 _Bool z$r_buff1_thd1; [L738] 0 _Bool z$r_buff1_thd2; [L739] 0 _Bool z$r_buff1_thd3; [L740] 0 _Bool z$r_buff1_thd4; [L741] 0 _Bool z$read_delayed; [L742] 0 int *z$read_delayed_var; [L743] 0 int z$w_buff0; [L744] 0 _Bool z$w_buff0_used; [L745] 0 int z$w_buff1; [L746] 0 _Bool z$w_buff1_used; [L747] 0 _Bool weak$$choice0; [L748] 0 _Bool weak$$choice2; [L846] 0 pthread_t t1165; [L847] FCALL, FORK 0 pthread_create(&t1165, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1165, ((void *)0), P0, ((void *)0))=-2, t1165={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L848] 0 pthread_t t1166; [L849] FCALL, FORK 0 pthread_create(&t1166, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1166, ((void *)0), P1, ((void *)0))=-1, t1165={5:0}, t1166={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L850] 0 pthread_t t1167; [L851] FCALL, FORK 0 pthread_create(&t1167, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1167, ((void *)0), P2, ((void *)0))=0, t1165={5:0}, t1166={6:0}, t1167={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L852] 0 pthread_t t1168; [L853] FCALL, FORK 0 pthread_create(&t1168, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1168, ((void *)0), P3, ((void *)0))=1, t1165={5:0}, t1166={6:0}, t1167={7:0}, t1168={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L802] 4 z$w_buff1 = z$w_buff0 [L803] 4 z$w_buff0 = 2 [L804] 4 z$w_buff1_used = z$w_buff0_used [L805] 4 z$w_buff0_used = (_Bool)1 [L806] CALL 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 4 !(!expression) [L806] RET 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L807] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L808] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L809] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L810] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L811] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L812] 4 z$r_buff0_thd4 = (_Bool)1 [L815] 4 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L818] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L821] 4 __unbuffered_p3_EBX = b VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L752] 1 b = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L755] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L767] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L770] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L782] 3 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L785] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L824] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L824] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L825] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L825] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L826] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L826] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L827] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L827] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L828] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L828] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L831] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L833] 4 return 0; [L788] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L788] EXPR 3 z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z [L788] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L788] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L789] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L789] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L790] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L790] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L791] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L791] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L792] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L792] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L795] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L797] 3 return 0; [L760] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L762] 1 return 0; [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L777] 2 return 0; [L855] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L857] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L857] RET 0 assume_abort_if_not(main$tmp_guard0) [L859] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L859] EXPR 0 z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z [L859] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L859] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L860] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L860] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L861] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L861] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L862] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L862] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L863] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L863] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L866] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L867] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L868] 0 z$flush_delayed = weak$$choice2 [L869] 0 z$mem_tmp = z [L870] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L870] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L871] EXPR 0 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L871] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L872] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L872] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L873] EXPR 0 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L873] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L874] EXPR 0 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L874] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L875] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L875] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L876] EXPR 0 weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L876] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L877] 0 main$tmp_guard1 = !(x == 2 && z == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L878] EXPR 0 z$flush_delayed ? z$mem_tmp : z [L878] 0 z = z$flush_delayed ? z$mem_tmp : z [L879] 0 z$flush_delayed = (_Bool)0 [L881] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=1, x=2, y=1, z=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 173 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 27.9s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 21.7s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 558 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 558 mSDsluCounter, 299 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 702 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1131 IncrementalHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 95 mSDtfsCounter, 1131 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2602occurred in iteration=0, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 90 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 242 NumberOfCodeBlocks, 242 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 204 ConstructedInterpolants, 0 QuantifiedInterpolants, 1198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 RESULT: Ultimate proved your program to be incorrect! [2021-11-21 01:28:54,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742184ca-ea25-4307-a565-1f33c4adc4c7/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE