./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix038.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix038.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG --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 8aba011b4454b6464ed30c6424ccbb7bc43e89a3e2bf826373810de7cb8fe97a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:42:43,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:42:43,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:42:43,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:42:43,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:42:43,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:42:43,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:42:43,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:42:43,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:42:43,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:42:43,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:42:43,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:42:43,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:42:43,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:42:43,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:42:43,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:42:43,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:42:43,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:42:43,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:42:43,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:42:43,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:42:43,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:42:43,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:42:43,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:42:43,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:42:43,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:42:43,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:42:43,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:42:43,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:42:43,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:42:43,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:42:43,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:42:43,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:42:43,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:42:43,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:42:43,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:42:43,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:42:43,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:42:43,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:42:43,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:42:43,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:42:43,651 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:42:43,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:42:43,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:42:43,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:42:43,713 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:42:43,714 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:42:43,714 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:42:43,714 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:42:43,714 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:42:43,722 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:42:43,723 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:42:43,724 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:42:43,725 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:42:43,725 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:42:43,725 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:42:43,725 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:42:43,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:42:43,727 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:42:43,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:42:43,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:42:43,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:42:43,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:42:43,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:42:43,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:42:43,728 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:42:43,728 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:42:43,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:42:43,729 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:42:43,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:42:43,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:42:43,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:42:43,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:42:43,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:42:43,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:42:43,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:42:43,733 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:42:43,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:42:43,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:42:43,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:42:43,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:42:43,734 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_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8aba011b4454b6464ed30c6424ccbb7bc43e89a3e2bf826373810de7cb8fe97a [2021-10-29 04:42:44,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:42:44,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:42:44,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:42:44,142 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:42:44,143 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:42:44,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/pthread-wmm/mix038.opt.i [2021-10-29 04:42:44,266 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/data/e30e6b0d5/eba648da7bc2481eb4e634dd776acae1/FLAG165b3ac59 [2021-10-29 04:42:44,910 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:42:44,910 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/sv-benchmarks/c/pthread-wmm/mix038.opt.i [2021-10-29 04:42:44,933 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/data/e30e6b0d5/eba648da7bc2481eb4e634dd776acae1/FLAG165b3ac59 [2021-10-29 04:42:45,151 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/data/e30e6b0d5/eba648da7bc2481eb4e634dd776acae1 [2021-10-29 04:42:45,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:42:45,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:42:45,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:42:45,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:42:45,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:42:45,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:42:45" (1/1) ... [2021-10-29 04:42:45,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6ec917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:45, skipping insertion in model container [2021-10-29 04:42:45,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:42:45" (1/1) ... [2021-10-29 04:42:45,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:42:45,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:42:45,444 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/sv-benchmarks/c/pthread-wmm/mix038.opt.i[944,957] [2021-10-29 04:42:45,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:42:45,747 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:42:45,762 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/sv-benchmarks/c/pthread-wmm/mix038.opt.i[944,957] [2021-10-29 04:42:45,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:42:45,903 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:42:45,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:45 WrapperNode [2021-10-29 04:42:45,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:42:45,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:42:45,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:42:45,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:42:45,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:45" (1/1) ... [2021-10-29 04:42:45,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:45" (1/1) ... [2021-10-29 04:42:45,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:42:46,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:42:46,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:42:46,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:42:46,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:45" (1/1) ... [2021-10-29 04:42:46,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:45" (1/1) ... [2021-10-29 04:42:46,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:45" (1/1) ... [2021-10-29 04:42:46,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:45" (1/1) ... [2021-10-29 04:42:46,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:45" (1/1) ... [2021-10-29 04:42:46,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:45" (1/1) ... [2021-10-29 04:42:46,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:45" (1/1) ... [2021-10-29 04:42:46,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:42:46,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:42:46,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:42:46,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:42:46,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:45" (1/1) ... [2021-10-29 04:42:46,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:42:46,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:42:46,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:42:46,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:42:46,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 04:42:46,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-29 04:42:46,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:42:46,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:42:46,154 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-29 04:42:46,154 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-29 04:42:46,155 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-29 04:42:46,155 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-29 04:42:46,155 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-29 04:42:46,155 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-29 04:42:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:42:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-29 04:42:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:42:46,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:42:46,159 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-29 04:42:48,361 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:42:48,361 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 04:42:48,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:42:48 BoogieIcfgContainer [2021-10-29 04:42:48,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:42:48,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:42:48,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:42:48,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:42:48,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:42:45" (1/3) ... [2021-10-29 04:42:48,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659c55ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:42:48, skipping insertion in model container [2021-10-29 04:42:48,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:45" (2/3) ... [2021-10-29 04:42:48,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659c55ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:42:48, skipping insertion in model container [2021-10-29 04:42:48,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:42:48" (3/3) ... [2021-10-29 04:42:48,386 INFO L111 eAbstractionObserver]: Analyzing ICFG mix038.opt.i [2021-10-29 04:42:48,392 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-29 04:42:48,392 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:42:48,392 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-29 04:42:48,393 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-29 04:42:48,438 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,438 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,438 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,439 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,439 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,439 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,440 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,440 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,440 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,440 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,441 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,441 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,441 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,442 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,442 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,442 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,442 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,442 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,443 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,443 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,443 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,443 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,445 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,445 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,445 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,445 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,445 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,446 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,446 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,446 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,446 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,446 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,447 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,447 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,447 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,447 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,447 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,450 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,450 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,450 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,450 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,458 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,458 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,458 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,458 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,458 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,467 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,467 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,467 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,468 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,468 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,468 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,469 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,469 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,469 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,469 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,469 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,470 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,470 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,470 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,470 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,471 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,471 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,471 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,471 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,472 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,472 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,472 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,472 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,473 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,473 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,473 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,473 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,475 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,475 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,475 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,476 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,476 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,476 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,476 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,482 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,486 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,486 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,486 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,500 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,500 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,501 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,501 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,501 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,502 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,502 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,502 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,503 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,503 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,503 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,503 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,505 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,506 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,506 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,506 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:42:48,508 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-29 04:42:48,575 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:42:48,591 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 [2021-10-29 04:42:48,591 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-29 04:42:48,635 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-29 04:42:48,647 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 109 transitions, 233 flow [2021-10-29 04:42:48,650 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 109 transitions, 233 flow [2021-10-29 04:42:48,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 109 transitions, 233 flow [2021-10-29 04:42:48,711 INFO L129 PetriNetUnfolder]: 2/106 cut-off events. [2021-10-29 04:42:48,711 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-29 04:42:48,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 106 events. 2/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-10-29 04:42:48,721 INFO L116 LiptonReduction]: Number of co-enabled transitions 1796 [2021-10-29 04:42:56,082 INFO L131 LiptonReduction]: Checked pairs total: 3969 [2021-10-29 04:42:56,082 INFO L133 LiptonReduction]: Total number of compositions: 94 [2021-10-29 04:42:56,093 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 27 transitions, 69 flow [2021-10-29 04:42:56,164 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 634 states, 631 states have (on average 3.283676703645008) internal successors, (2072), 633 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:56,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 634 states, 631 states have (on average 3.283676703645008) internal successors, (2072), 633 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:56,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 04:42:56,181 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:42:56,182 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:42:56,183 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-29 04:42:56,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:42:56,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1026352792, now seen corresponding path program 1 times [2021-10-29 04:42:56,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:42:56,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007723129] [2021-10-29 04:42:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:42:56,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:42:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:42:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:42:56,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:42:56,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007723129] [2021-10-29 04:42:56,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007723129] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:42:56,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:42:56,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 04:42:56,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665371014] [2021-10-29 04:42:56,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:42:56,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:42:56,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:42:56,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:42:56,620 INFO L87 Difference]: Start difference. First operand has 634 states, 631 states have (on average 3.283676703645008) internal successors, (2072), 633 states have internal predecessors, (2072), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:42:56,732 INFO L93 Difference]: Finished difference Result 538 states and 1640 transitions. [2021-10-29 04:42:56,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:42:56,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 04:42:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:42:56,778 INFO L225 Difference]: With dead ends: 538 [2021-10-29 04:42:56,778 INFO L226 Difference]: Without dead ends: 522 [2021-10-29 04:42:56,779 INFO L786 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 [2021-10-29 04:42:56,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-10-29 04:42:56,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2021-10-29 04:42:56,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 3.071017274472169) internal successors, (1600), 521 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1600 transitions. [2021-10-29 04:42:56,931 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1600 transitions. Word has length 7 [2021-10-29 04:42:56,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:42:56,933 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 1600 transitions. [2021-10-29 04:42:56,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1600 transitions. [2021-10-29 04:42:56,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:42:56,937 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:42:56,938 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:42:56,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:42:56,939 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-29 04:42:56,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:42:56,939 INFO L85 PathProgramCache]: Analyzing trace with hash 206014901, now seen corresponding path program 1 times [2021-10-29 04:42:56,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:42:56,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950548557] [2021-10-29 04:42:56,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:42:56,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:42:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:42:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:42:57,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:42:57,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950548557] [2021-10-29 04:42:57,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950548557] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:42:57,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:42:57,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:42:57,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881356670] [2021-10-29 04:42:57,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:42:57,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:42:57,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:42:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:42:57,208 INFO L87 Difference]: Start difference. First operand 522 states and 1600 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:42:57,307 INFO L93 Difference]: Finished difference Result 878 states and 2514 transitions. [2021-10-29 04:42:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:42:57,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 04:42:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:42:57,316 INFO L225 Difference]: With dead ends: 878 [2021-10-29 04:42:57,317 INFO L226 Difference]: Without dead ends: 702 [2021-10-29 04:42:57,318 INFO L786 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 [2021-10-29 04:42:57,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-10-29 04:42:57,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 614. [2021-10-29 04:42:57,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 2.972267536704731) internal successors, (1822), 613 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:57,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1822 transitions. [2021-10-29 04:42:57,392 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1822 transitions. Word has length 10 [2021-10-29 04:42:57,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:42:57,393 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 1822 transitions. [2021-10-29 04:42:57,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:57,393 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1822 transitions. [2021-10-29 04:42:57,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 04:42:57,398 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:42:57,398 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:42:57,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:42:57,399 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-29 04:42:57,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:42:57,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1470323937, now seen corresponding path program 1 times [2021-10-29 04:42:57,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:42:57,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176873563] [2021-10-29 04:42:57,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:42:57,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:42:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:42:57,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:42:57,511 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:42:57,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176873563] [2021-10-29 04:42:57,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176873563] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:42:57,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:42:57,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:42:57,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876973634] [2021-10-29 04:42:57,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:42:57,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:42:57,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:42:57,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:42:57,519 INFO L87 Difference]: Start difference. First operand 614 states and 1822 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:57,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:42:57,548 INFO L93 Difference]: Finished difference Result 638 states and 1844 transitions. [2021-10-29 04:42:57,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:42:57,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 04:42:57,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:42:57,556 INFO L225 Difference]: With dead ends: 638 [2021-10-29 04:42:57,557 INFO L226 Difference]: Without dead ends: 566 [2021-10-29 04:42:57,557 INFO L786 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 [2021-10-29 04:42:57,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-10-29 04:42:57,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 518. [2021-10-29 04:42:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 2.9593810444874276) internal successors, (1530), 517 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:57,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1530 transitions. [2021-10-29 04:42:57,588 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 1530 transitions. Word has length 11 [2021-10-29 04:42:57,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:42:57,588 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 1530 transitions. [2021-10-29 04:42:57,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:57,589 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 1530 transitions. [2021-10-29 04:42:57,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 04:42:57,596 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:42:57,596 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:42:57,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 04:42:57,597 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-29 04:42:57,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:42:57,598 INFO L85 PathProgramCache]: Analyzing trace with hash -898138243, now seen corresponding path program 1 times [2021-10-29 04:42:57,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:42:57,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206894862] [2021-10-29 04:42:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:42:57,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:42:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:42:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:42:57,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:42:57,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206894862] [2021-10-29 04:42:57,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206894862] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:42:57,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:42:57,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:42:57,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097453480] [2021-10-29 04:42:57,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:42:57,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:42:57,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:42:57,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:42:57,769 INFO L87 Difference]: Start difference. First operand 518 states and 1530 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:57,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:42:57,877 INFO L93 Difference]: Finished difference Result 692 states and 1925 transitions. [2021-10-29 04:42:57,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 04:42:57,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 04:42:57,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:42:57,887 INFO L225 Difference]: With dead ends: 692 [2021-10-29 04:42:57,888 INFO L226 Difference]: Without dead ends: 598 [2021-10-29 04:42:57,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:42:57,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-10-29 04:42:57,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 502. [2021-10-29 04:42:57,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 2.934131736526946) internal successors, (1470), 501 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1470 transitions. [2021-10-29 04:42:57,917 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1470 transitions. Word has length 12 [2021-10-29 04:42:57,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:42:57,918 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1470 transitions. [2021-10-29 04:42:57,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:57,919 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1470 transitions. [2021-10-29 04:42:57,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 04:42:57,921 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:42:57,921 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:42:57,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 04:42:57,922 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-29 04:42:57,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:42:57,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1247025561, now seen corresponding path program 1 times [2021-10-29 04:42:57,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:42:57,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772835956] [2021-10-29 04:42:57,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:42:57,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:42:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:42:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:42:58,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:42:58,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772835956] [2021-10-29 04:42:58,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772835956] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:42:58,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:42:58,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:42:58,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529422785] [2021-10-29 04:42:58,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:42:58,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:42:58,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:42:58,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:42:58,097 INFO L87 Difference]: Start difference. First operand 502 states and 1470 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:42:58,137 INFO L93 Difference]: Finished difference Result 472 states and 1204 transitions. [2021-10-29 04:42:58,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:42:58,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-29 04:42:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:42:58,144 INFO L225 Difference]: With dead ends: 472 [2021-10-29 04:42:58,145 INFO L226 Difference]: Without dead ends: 356 [2021-10-29 04:42:58,145 INFO L786 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 [2021-10-29 04:42:58,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-10-29 04:42:58,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2021-10-29 04:42:58,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.507042253521127) internal successors, (890), 355 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 890 transitions. [2021-10-29 04:42:58,163 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 890 transitions. Word has length 13 [2021-10-29 04:42:58,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:42:58,163 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 890 transitions. [2021-10-29 04:42:58,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 890 transitions. [2021-10-29 04:42:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 04:42:58,165 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:42:58,165 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:42:58,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 04:42:58,165 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-29 04:42:58,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:42:58,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1303177409, now seen corresponding path program 1 times [2021-10-29 04:42:58,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:42:58,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599072390] [2021-10-29 04:42:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:42:58,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:42:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:42:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:42:58,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:42:58,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599072390] [2021-10-29 04:42:58,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599072390] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:42:58,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:42:58,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:42:58,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545778081] [2021-10-29 04:42:58,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:42:58,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:42:58,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:42:58,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:42:58,279 INFO L87 Difference]: Start difference. First operand 356 states and 890 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:58,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:42:58,310 INFO L93 Difference]: Finished difference Result 508 states and 1222 transitions. [2021-10-29 04:42:58,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:42:58,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 04:42:58,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:42:58,314 INFO L225 Difference]: With dead ends: 508 [2021-10-29 04:42:58,315 INFO L226 Difference]: Without dead ends: 342 [2021-10-29 04:42:58,315 INFO L786 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 [2021-10-29 04:42:58,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-10-29 04:42:58,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 300. [2021-10-29 04:42:58,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 2.408026755852843) internal successors, (720), 299 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:58,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 720 transitions. [2021-10-29 04:42:58,329 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 720 transitions. Word has length 15 [2021-10-29 04:42:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:42:58,329 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 720 transitions. [2021-10-29 04:42:58,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:58,330 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 720 transitions. [2021-10-29 04:42:58,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 04:42:58,331 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:42:58,331 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:42:58,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 04:42:58,332 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-29 04:42:58,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:42:58,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1630846664, now seen corresponding path program 1 times [2021-10-29 04:42:58,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:42:58,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336959864] [2021-10-29 04:42:58,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:42:58,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:42:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:42:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:42:58,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:42:58,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336959864] [2021-10-29 04:42:58,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336959864] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:42:58,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:42:58,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:42:58,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865101983] [2021-10-29 04:42:58,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:42:58,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:42:58,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:42:58,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:42:58,530 INFO L87 Difference]: Start difference. First operand 300 states and 720 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:58,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:42:58,592 INFO L93 Difference]: Finished difference Result 231 states and 494 transitions. [2021-10-29 04:42:58,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:42:58,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 04:42:58,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:42:58,594 INFO L225 Difference]: With dead ends: 231 [2021-10-29 04:42:58,595 INFO L226 Difference]: Without dead ends: 180 [2021-10-29 04:42:58,595 INFO L786 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 [2021-10-29 04:42:58,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-29 04:42:58,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-10-29 04:42:58,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.089385474860335) internal successors, (374), 179 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 374 transitions. [2021-10-29 04:42:58,604 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 374 transitions. Word has length 15 [2021-10-29 04:42:58,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:42:58,605 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 374 transitions. [2021-10-29 04:42:58,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:58,605 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 374 transitions. [2021-10-29 04:42:58,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 04:42:58,606 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:42:58,606 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:42:58,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 04:42:58,607 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-29 04:42:58,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:42:58,608 INFO L85 PathProgramCache]: Analyzing trace with hash 705460790, now seen corresponding path program 1 times [2021-10-29 04:42:58,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:42:58,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125486913] [2021-10-29 04:42:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:42:58,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:42:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:42:58,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:42:58,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:42:58,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125486913] [2021-10-29 04:42:58,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125486913] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:42:58,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:42:58,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 04:42:58,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528153916] [2021-10-29 04:42:58,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:42:58,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:42:58,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:42:58,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:42:58,785 INFO L87 Difference]: Start difference. First operand 180 states and 374 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:58,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:42:58,837 INFO L93 Difference]: Finished difference Result 154 states and 321 transitions. [2021-10-29 04:42:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 04:42:58,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 04:42:58,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:42:58,839 INFO L225 Difference]: With dead ends: 154 [2021-10-29 04:42:58,840 INFO L226 Difference]: Without dead ends: 94 [2021-10-29 04:42:58,840 INFO L786 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 [2021-10-29 04:42:58,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-29 04:42:58,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-10-29 04:42:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.0) internal successors, (186), 93 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 186 transitions. [2021-10-29 04:42:58,844 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 186 transitions. Word has length 18 [2021-10-29 04:42:58,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:42:58,845 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 186 transitions. [2021-10-29 04:42:58,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:58,845 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 186 transitions. [2021-10-29 04:42:58,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 04:42:58,846 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:42:58,846 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:42:58,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 04:42:58,847 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-29 04:42:58,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:42:58,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1994558433, now seen corresponding path program 1 times [2021-10-29 04:42:58,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:42:58,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017773192] [2021-10-29 04:42:58,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:42:58,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:42:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:42:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:42:59,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:42:59,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017773192] [2021-10-29 04:42:59,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017773192] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:42:59,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:42:59,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 04:42:59,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625578732] [2021-10-29 04:42:59,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 04:42:59,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:42:59,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 04:42:59,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:42:59,163 INFO L87 Difference]: Start difference. First operand 94 states and 186 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:59,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:42:59,315 INFO L93 Difference]: Finished difference Result 144 states and 285 transitions. [2021-10-29 04:42:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 04:42:59,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-29 04:42:59,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:42:59,317 INFO L225 Difference]: With dead ends: 144 [2021-10-29 04:42:59,317 INFO L226 Difference]: Without dead ends: 97 [2021-10-29 04:42:59,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:42:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-29 04:42:59,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 74. [2021-10-29 04:42:59,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 73 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 136 transitions. [2021-10-29 04:42:59,321 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 136 transitions. Word has length 21 [2021-10-29 04:42:59,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:42:59,324 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 136 transitions. [2021-10-29 04:42:59,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:59,324 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 136 transitions. [2021-10-29 04:42:59,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 04:42:59,325 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:42:59,325 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:42:59,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-29 04:42:59,326 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-29 04:42:59,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:42:59,326 INFO L85 PathProgramCache]: Analyzing trace with hash -692049035, now seen corresponding path program 2 times [2021-10-29 04:42:59,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:42:59,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472187810] [2021-10-29 04:42:59,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:42:59,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:42:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:42:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:42:59,535 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:42:59,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472187810] [2021-10-29 04:42:59,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472187810] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:42:59,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:42:59,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 04:42:59,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794516155] [2021-10-29 04:42:59,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:42:59,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:42:59,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:42:59,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:42:59,539 INFO L87 Difference]: Start difference. First operand 74 states and 136 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:59,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:42:59,697 INFO L93 Difference]: Finished difference Result 140 states and 256 transitions. [2021-10-29 04:42:59,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 04:42:59,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-29 04:42:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:42:59,699 INFO L225 Difference]: With dead ends: 140 [2021-10-29 04:42:59,699 INFO L226 Difference]: Without dead ends: 43 [2021-10-29 04:42:59,699 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-29 04:42:59,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-29 04:42:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-29 04:42:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 42 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 69 transitions. [2021-10-29 04:42:59,701 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 69 transitions. Word has length 21 [2021-10-29 04:42:59,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:42:59,702 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 69 transitions. [2021-10-29 04:42:59,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2021-10-29 04:42:59,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 04:42:59,702 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:42:59,703 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:42:59,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-29 04:42:59,703 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-29 04:42:59,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:42:59,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1979811057, now seen corresponding path program 3 times [2021-10-29 04:42:59,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:42:59,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351354091] [2021-10-29 04:42:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:42:59,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:42:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:42:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:42:59,925 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:42:59,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351354091] [2021-10-29 04:42:59,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351354091] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:42:59,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:42:59,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 04:42:59,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568953910] [2021-10-29 04:42:59,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 04:42:59,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:42:59,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 04:42:59,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:42:59,928 INFO L87 Difference]: Start difference. First operand 43 states and 69 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:00,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:43:00,072 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-10-29 04:43:00,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 04:43:00,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-29 04:43:00,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:43:00,073 INFO L225 Difference]: With dead ends: 54 [2021-10-29 04:43:00,073 INFO L226 Difference]: Without dead ends: 31 [2021-10-29 04:43:00,074 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-29 04:43:00,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-29 04:43:00,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-29 04:43:00,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-10-29 04:43:00,075 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 21 [2021-10-29 04:43:00,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:43:00,075 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-10-29 04:43:00,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:00,075 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-10-29 04:43:00,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 04:43:00,076 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:00,076 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:00,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-29 04:43:00,076 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-29 04:43:00,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:00,077 INFO L85 PathProgramCache]: Analyzing trace with hash -624071301, now seen corresponding path program 4 times [2021-10-29 04:43:00,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:43:00,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051132013] [2021-10-29 04:43:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:00,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:43:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:43:00,121 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:43:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:43:00,225 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 04:43:00,226 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:43:00,227 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:43:00,229 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:43:00,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-29 04:43:00,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-29 04:43:00,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-29 04:43:00,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:43:00,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-29 04:43:00,233 INFO L731 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:00,239 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-29 04:43:00,240 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:43:00,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:43:00 BasicIcfg [2021-10-29 04:43:00,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:43:00,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:43:00,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:43:00,391 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:43:00,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:42:48" (3/4) ... [2021-10-29 04:43:00,394 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:43:00,535 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:43:00,535 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:43:00,538 INFO L168 Benchmark]: Toolchain (without parser) took 15380.53 ms. Allocated memory was 88.1 MB in the beginning and 180.4 MB in the end (delta: 92.3 MB). Free memory was 64.3 MB in the beginning and 61.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 94.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:00,538 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 63.5 MB in the beginning and 63.4 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:43:00,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 747.86 ms. Allocated memory is still 88.1 MB. Free memory was 64.3 MB in the beginning and 50.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:00,540 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.75 ms. Allocated memory is still 88.1 MB. Free memory was 49.7 MB in the beginning and 47.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:00,540 INFO L168 Benchmark]: Boogie Preprocessor took 51.88 ms. Allocated memory is still 88.1 MB. Free memory was 47.4 MB in the beginning and 45.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:00,541 INFO L168 Benchmark]: RCFGBuilder took 2312.85 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 45.3 MB in the beginning and 63.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:00,541 INFO L168 Benchmark]: TraceAbstraction took 12021.86 ms. Allocated memory was 115.3 MB in the beginning and 180.4 MB in the end (delta: 65.0 MB). Free memory was 62.7 MB in the beginning and 77.2 MB in the end (delta: -14.5 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:00,542 INFO L168 Benchmark]: Witness Printer took 144.83 ms. Allocated memory is still 180.4 MB. Free memory was 77.2 MB in the beginning and 61.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:00,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 63.5 MB in the beginning and 63.4 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 747.86 ms. Allocated memory is still 88.1 MB. Free memory was 64.3 MB in the beginning and 50.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.75 ms. Allocated memory is still 88.1 MB. Free memory was 49.7 MB in the beginning and 47.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.88 ms. Allocated memory is still 88.1 MB. Free memory was 47.4 MB in the beginning and 45.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2312.85 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 45.3 MB in the beginning and 63.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12021.86 ms. Allocated memory was 115.3 MB in the beginning and 180.4 MB in the end (delta: 65.0 MB). Free memory was 62.7 MB in the beginning and 77.2 MB in the end (delta: -14.5 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. * Witness Printer took 144.83 ms. Allocated memory is still 180.4 MB. Free memory was 77.2 MB in the beginning and 61.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.4s, 117 PlacesBefore, 36 PlacesAfterwards, 109 TransitionsBefore, 27 TransitionsAfterwards, 1796 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 94 TotalNumberOfCompositions, 3969 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2005, positive: 1873, positive conditional: 0, positive unconditional: 1873, negative: 132, negative conditional: 0, negative unconditional: 132, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1184, positive: 1148, positive conditional: 0, positive unconditional: 1148, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1184, positive: 1134, positive conditional: 0, positive unconditional: 1134, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 292, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 264, negative conditional: 0, negative unconditional: 264, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2005, positive: 725, positive conditional: 0, positive unconditional: 725, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 1184, unknown conditional: 0, unknown unconditional: 1184] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 93, Positive conditional cache size: 0, Positive unconditional cache size: 93, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - 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: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p1_EAX = 0; [L713] 0 int __unbuffered_p2_EAX = 0; [L715] 0 int __unbuffered_p2_EBX = 0; [L717] 0 int a = 0; [L718] 0 _Bool main$tmp_guard0; [L719] 0 _Bool main$tmp_guard1; [L721] 0 int x = 0; [L723] 0 int y = 0; [L724] 0 _Bool y$flush_delayed; [L725] 0 int y$mem_tmp; [L726] 0 _Bool y$r_buff0_thd0; [L727] 0 _Bool y$r_buff0_thd1; [L728] 0 _Bool y$r_buff0_thd2; [L729] 0 _Bool y$r_buff0_thd3; [L730] 0 _Bool y$r_buff1_thd0; [L731] 0 _Bool y$r_buff1_thd1; [L732] 0 _Bool y$r_buff1_thd2; [L733] 0 _Bool y$r_buff1_thd3; [L734] 0 _Bool y$read_delayed; [L735] 0 int *y$read_delayed_var; [L736] 0 int y$w_buff0; [L737] 0 _Bool y$w_buff0_used; [L738] 0 int y$w_buff1; [L739] 0 _Bool y$w_buff1_used; [L741] 0 int z = 0; [L742] 0 _Bool weak$$choice0; [L743] 0 _Bool weak$$choice2; [L833] 0 pthread_t t1004; [L834] FCALL, FORK 0 pthread_create(&t1004, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L835] 0 pthread_t t1005; [L836] FCALL, FORK 0 pthread_create(&t1005, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L837] 0 pthread_t t1006; [L838] FCALL, FORK 0 pthread_create(&t1006, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L790] 3 y$w_buff1 = y$w_buff0 [L791] 3 y$w_buff0 = 1 [L792] 3 y$w_buff1_used = y$w_buff0_used [L793] 3 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 3 !(!expression) [L795] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L796] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L797] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L798] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L799] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L802] 3 z = 1 [L805] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L808] 3 __unbuffered_p2_EBX = a VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L747] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L750] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L755] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L757] 1 return 0; [L762] 2 x = 2 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L765] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L766] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L767] 2 y$flush_delayed = weak$$choice2 [L768] 2 y$mem_tmp = y [L769] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L769] 2 y = !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L770] EXPR 2 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L770] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0) [L770] EXPR 2 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L770] 2 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L771] EXPR 2 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L771] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1) [L771] EXPR 2 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L771] 2 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L772] EXPR 2 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L772] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used) [L772] EXPR 2 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L772] 2 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L773] EXPR 2 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L773] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0) [L773] EXPR 2 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L773] 2 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L774] EXPR 2 weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L774] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2) [L774] EXPR 2 weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L774] 2 y$r_buff0_thd2 = weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L775] EXPR 2 weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L775] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0) [L775] EXPR 2 weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L775] 2 y$r_buff1_thd2 = weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L776] 2 __unbuffered_p1_EAX = y [L777] EXPR 2 y$flush_delayed ? y$mem_tmp : y [L777] 2 y = y$flush_delayed ? y$mem_tmp : y [L778] 2 y$flush_delayed = (_Bool)0 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=50, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L811] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L811] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L812] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L812] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L813] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L813] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L814] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L814] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L815] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L815] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L818] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L820] 3 return 0; [L783] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L785] 2 return 0; [L840] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L3] COND FALSE 0 !(!cond) [L844] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L844] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L844] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L844] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L845] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L845] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L846] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L846] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L847] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L847] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L848] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L848] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L851] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 0) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=50, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] - 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: 836]: 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: 834]: 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: 838]: 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 7 procedures, 136 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 11.6s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.5s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 331 SDtfs, 377 SDslu, 644 SDs, 0 SdLazy, 258 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=634occurred in iteration=0, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 297 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2021-10-29 04:43:00,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5931d10e-4362-4b3e-a837-4e39560e2647/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...