./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c --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_b30b2cc4-c493-4e65-814d-5cbff06fc867/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/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_b30b2cc4-c493-4e65-814d-5cbff06fc867/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/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_b30b2cc4-c493-4e65-814d-5cbff06fc867/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 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:31:11,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:31:11,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:31:11,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:31:11,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:31:11,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:31:11,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:31:11,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:31:11,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:31:11,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:31:11,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:31:11,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:31:11,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:31:11,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:31:11,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:31:11,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:31:11,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:31:11,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:31:11,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:31:11,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:31:11,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:31:11,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:31:11,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:31:11,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:31:11,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:31:11,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:31:11,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:31:11,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:31:11,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:31:11,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:31:11,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:31:11,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:31:11,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:31:11,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:31:11,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:31:11,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:31:11,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:31:11,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:31:11,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:31:11,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:31:11,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:31:11,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:31:11,827 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:31:11,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:31:11,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:31:11,829 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:31:11,829 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:31:11,829 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:31:11,829 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:31:11,830 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:31:11,830 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:31:11,830 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:31:11,830 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:31:11,831 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:31:11,831 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:31:11,831 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:31:11,831 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:31:11,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:31:11,832 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:31:11,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:31:11,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:31:11,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:31:11,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:31:11,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:31:11,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:31:11,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:31:11,834 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:31:11,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:31:11,835 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:31:11,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:31:11,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:31:11,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:31:11,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:31:11,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:31:11,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:31:11,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:31:11,837 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:31:11,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:31:11,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:31:11,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:31:11,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:31:11,838 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_b30b2cc4-c493-4e65-814d-5cbff06fc867/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 [2021-10-29 05:31:12,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:31:12,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:31:12,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:31:12,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:31:12,178 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:31:12,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2021-10-29 05:31:12,281 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/bin/utaipan-SDwSMHVbGG/data/d8756d984/132ca62c68d542c5b495c218affcff2c/FLAG98403c028 [2021-10-29 05:31:12,783 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:31:12,784 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2021-10-29 05:31:12,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/bin/utaipan-SDwSMHVbGG/data/d8756d984/132ca62c68d542c5b495c218affcff2c/FLAG98403c028 [2021-10-29 05:31:13,125 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/bin/utaipan-SDwSMHVbGG/data/d8756d984/132ca62c68d542c5b495c218affcff2c [2021-10-29 05:31:13,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:31:13,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:31:13,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:31:13,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:31:13,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:31:13,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:31:13" (1/1) ... [2021-10-29 05:31:13,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32315be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:13, skipping insertion in model container [2021-10-29 05:31:13,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:31:13" (1/1) ... [2021-10-29 05:31:13,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:31:13,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:31:13,408 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_b30b2cc4-c493-4e65-814d-5cbff06fc867/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c[3512,3525] [2021-10-29 05:31:13,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:31:13,422 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:31:13,447 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_b30b2cc4-c493-4e65-814d-5cbff06fc867/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c[3512,3525] [2021-10-29 05:31:13,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:31:13,463 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:31:13,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:13 WrapperNode [2021-10-29 05:31:13,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:31:13,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:31:13,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:31:13,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:31:13,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:13" (1/1) ... [2021-10-29 05:31:13,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:13" (1/1) ... [2021-10-29 05:31:13,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:31:13,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:31:13,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:31:13,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:31:13,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:13" (1/1) ... [2021-10-29 05:31:13,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:13" (1/1) ... [2021-10-29 05:31:13,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:13" (1/1) ... [2021-10-29 05:31:13,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:13" (1/1) ... [2021-10-29 05:31:13,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:13" (1/1) ... [2021-10-29 05:31:13,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:13" (1/1) ... [2021-10-29 05:31:13,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:13" (1/1) ... [2021-10-29 05:31:13,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:31:13,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:31:13,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:31:13,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:31:13,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:13" (1/1) ... [2021-10-29 05:31:13,557 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:31:13,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:31:13,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:31:13,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:31:13,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-29 05:31:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-29 05:31:13,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-29 05:31:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-29 05:31:13,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:31:13,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:31:13,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:31:13,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-29 05:31:13,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-29 05:31:13,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:31:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:31:13,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:31:13,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:31:13,632 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 05:31:14,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:31:14,162 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-29 05:31:14,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:31:14 BoogieIcfgContainer [2021-10-29 05:31:14,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:31:14,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:31:14,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:31:14,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:31:14,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:31:13" (1/3) ... [2021-10-29 05:31:14,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786e9710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:31:14, skipping insertion in model container [2021-10-29 05:31:14,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:13" (2/3) ... [2021-10-29 05:31:14,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786e9710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:31:14, skipping insertion in model container [2021-10-29 05:31:14,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:31:14" (3/3) ... [2021-10-29 05:31:14,173 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2021-10-29 05:31:14,178 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-29 05:31:14,179 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:31:14,179 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:31:14,179 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-29 05:31:14,206 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,206 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,214 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,215 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,215 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,215 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,215 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,217 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,219 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,220 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,220 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,220 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,221 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,221 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,221 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,222 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,225 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,225 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,225 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,226 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,227 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,227 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,227 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,228 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,228 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,229 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,229 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,229 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,229 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,235 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,235 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,235 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,236 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,236 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,236 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,239 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,239 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,239 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,239 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,240 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,240 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:31:14,252 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-29 05:31:14,306 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:31:14,313 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 05:31:14,313 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 05:31:14,332 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-29 05:31:14,346 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 100 transitions, 216 flow [2021-10-29 05:31:14,349 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 100 transitions, 216 flow [2021-10-29 05:31:14,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 100 transitions, 216 flow [2021-10-29 05:31:14,438 INFO L129 PetriNetUnfolder]: 2/98 cut-off events. [2021-10-29 05:31:14,441 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-29 05:31:14,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 2/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2021-10-29 05:31:14,449 INFO L116 LiptonReduction]: Number of co-enabled transitions 572 [2021-10-29 05:31:18,386 INFO L131 LiptonReduction]: Checked pairs total: 2927 [2021-10-29 05:31:18,387 INFO L133 LiptonReduction]: Total number of compositions: 82 [2021-10-29 05:31:18,395 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 68 flow [2021-10-29 05:31:18,416 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 164 states, 163 states have (on average 2.1595092024539877) internal successors, (352), 163 states have internal predecessors, (352), 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 05:31:18,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 163 states have (on average 2.1595092024539877) internal successors, (352), 163 states have internal predecessors, (352), 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 05:31:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:31:18,427 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:31:18,428 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, 1, 1] [2021-10-29 05:31:18,429 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-29 05:31:18,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:31:18,434 INFO L85 PathProgramCache]: Analyzing trace with hash -75155919, now seen corresponding path program 1 times [2021-10-29 05:31:18,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:31:18,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034081697] [2021-10-29 05:31:18,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:31:18,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:31:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:31:18,785 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 05:31:18,786 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:31:18,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034081697] [2021-10-29 05:31:18,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034081697] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:31:18,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:31:18,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 05:31:18,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697499263] [2021-10-29 05:31:18,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:31:18,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:31:18,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:31:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:31:18,828 INFO L87 Difference]: Start difference. First operand has 164 states, 163 states have (on average 2.1595092024539877) internal successors, (352), 163 states have internal predecessors, (352), 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 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 05:31:18,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:31:18,958 INFO L93 Difference]: Finished difference Result 215 states and 431 transitions. [2021-10-29 05:31:18,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:31:18,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2021-10-29 05:31:18,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:31:18,971 INFO L225 Difference]: With dead ends: 215 [2021-10-29 05:31:18,971 INFO L226 Difference]: Without dead ends: 178 [2021-10-29 05:31:18,973 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:31:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-29 05:31:19,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 144. [2021-10-29 05:31:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.111888111888112) internal successors, (302), 143 states have internal predecessors, (302), 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 05:31:19,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 302 transitions. [2021-10-29 05:31:19,020 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 302 transitions. Word has length 23 [2021-10-29 05:31:19,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:31:19,021 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 302 transitions. [2021-10-29 05:31:19,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 05:31:19,022 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 302 transitions. [2021-10-29 05:31:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:31:19,024 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:31:19,024 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, 1, 1] [2021-10-29 05:31:19,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:31:19,025 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-29 05:31:19,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:31:19,026 INFO L85 PathProgramCache]: Analyzing trace with hash 292898801, now seen corresponding path program 2 times [2021-10-29 05:31:19,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:31:19,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783880558] [2021-10-29 05:31:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:31:19,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:31:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:31:19,209 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 05:31:19,210 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:31:19,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783880558] [2021-10-29 05:31:19,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783880558] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:31:19,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:31:19,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 05:31:19,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143248878] [2021-10-29 05:31:19,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:31:19,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:31:19,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:31:19,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:31:19,216 INFO L87 Difference]: Start difference. First operand 144 states and 302 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 05:31:19,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:31:19,301 INFO L93 Difference]: Finished difference Result 202 states and 403 transitions. [2021-10-29 05:31:19,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:31:19,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2021-10-29 05:31:19,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:31:19,305 INFO L225 Difference]: With dead ends: 202 [2021-10-29 05:31:19,305 INFO L226 Difference]: Without dead ends: 166 [2021-10-29 05:31:19,306 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:31:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-29 05:31:19,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 136. [2021-10-29 05:31:19,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.088888888888889) internal successors, (282), 135 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:31:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 282 transitions. [2021-10-29 05:31:19,320 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 282 transitions. Word has length 23 [2021-10-29 05:31:19,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:31:19,320 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 282 transitions. [2021-10-29 05:31:19,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 05:31:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 282 transitions. [2021-10-29 05:31:19,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:31:19,323 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:31:19,323 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, 1, 1] [2021-10-29 05:31:19,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:31:19,324 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-29 05:31:19,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:31:19,324 INFO L85 PathProgramCache]: Analyzing trace with hash -161929063, now seen corresponding path program 3 times [2021-10-29 05:31:19,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:31:19,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224450609] [2021-10-29 05:31:19,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:31:19,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:31:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:31:19,459 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 05:31:19,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:31:19,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224450609] [2021-10-29 05:31:19,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224450609] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:31:19,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:31:19,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:31:19,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138621143] [2021-10-29 05:31:19,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:31:19,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:31:19,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:31:19,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:31:19,463 INFO L87 Difference]: Start difference. First operand 136 states and 282 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 05:31:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:31:19,478 INFO L93 Difference]: Finished difference Result 136 states and 280 transitions. [2021-10-29 05:31:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:31:19,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-10-29 05:31:19,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:31:19,484 INFO L225 Difference]: With dead ends: 136 [2021-10-29 05:31:19,484 INFO L226 Difference]: Without dead ends: 136 [2021-10-29 05:31:19,485 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:31:19,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-29 05:31:19,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-10-29 05:31:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.074074074074074) internal successors, (280), 135 states have internal predecessors, (280), 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 05:31:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 280 transitions. [2021-10-29 05:31:19,505 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 280 transitions. Word has length 23 [2021-10-29 05:31:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:31:19,505 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 280 transitions. [2021-10-29 05:31:19,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 05:31:19,506 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 280 transitions. [2021-10-29 05:31:19,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:31:19,514 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:31:19,514 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, 1, 1] [2021-10-29 05:31:19,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:31:19,515 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-29 05:31:19,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:31:19,516 INFO L85 PathProgramCache]: Analyzing trace with hash 904959857, now seen corresponding path program 4 times [2021-10-29 05:31:19,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:31:19,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836708884] [2021-10-29 05:31:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:31:19,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:31:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:31:19,674 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 05:31:19,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:31:19,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836708884] [2021-10-29 05:31:19,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836708884] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:31:19,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:31:19,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:31:19,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506734207] [2021-10-29 05:31:19,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:31:19,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:31:19,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:31:19,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:31:19,677 INFO L87 Difference]: Start difference. First operand 136 states and 280 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 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 05:31:19,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:31:19,728 INFO L93 Difference]: Finished difference Result 162 states and 330 transitions. [2021-10-29 05:31:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:31:19,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2021-10-29 05:31:19,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:31:19,734 INFO L225 Difference]: With dead ends: 162 [2021-10-29 05:31:19,734 INFO L226 Difference]: Without dead ends: 162 [2021-10-29 05:31:19,734 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:31:19,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-29 05:31:19,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 158. [2021-10-29 05:31:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.0573248407643314) internal successors, (323), 157 states have internal predecessors, (323), 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 05:31:19,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 323 transitions. [2021-10-29 05:31:19,749 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 323 transitions. Word has length 23 [2021-10-29 05:31:19,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:31:19,749 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 323 transitions. [2021-10-29 05:31:19,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 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 05:31:19,749 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 323 transitions. [2021-10-29 05:31:19,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:31:19,751 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:31:19,751 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, 1, 1] [2021-10-29 05:31:19,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:31:19,751 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-29 05:31:19,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:31:19,752 INFO L85 PathProgramCache]: Analyzing trace with hash 941384433, now seen corresponding path program 5 times [2021-10-29 05:31:19,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:31:19,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319754358] [2021-10-29 05:31:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:31:19,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:31:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:31:19,857 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 05:31:19,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:31:19,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319754358] [2021-10-29 05:31:19,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319754358] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:31:19,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:31:19,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 05:31:19,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545104541] [2021-10-29 05:31:19,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:31:19,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:31:19,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:31:19,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:31:19,861 INFO L87 Difference]: Start difference. First operand 158 states and 323 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 05:31:19,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:31:19,935 INFO L93 Difference]: Finished difference Result 191 states and 374 transitions. [2021-10-29 05:31:19,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:31:19,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2021-10-29 05:31:19,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:31:19,937 INFO L225 Difference]: With dead ends: 191 [2021-10-29 05:31:19,937 INFO L226 Difference]: Without dead ends: 116 [2021-10-29 05:31:19,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:31:19,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-29 05:31:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 102. [2021-10-29 05:31:19,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.9801980198019802) internal successors, (200), 101 states have internal predecessors, (200), 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 05:31:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 200 transitions. [2021-10-29 05:31:19,944 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 200 transitions. Word has length 23 [2021-10-29 05:31:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:31:19,945 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 200 transitions. [2021-10-29 05:31:19,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 05:31:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 200 transitions. [2021-10-29 05:31:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:31:19,946 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:31:19,946 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, 1, 1] [2021-10-29 05:31:19,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:31:19,947 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-29 05:31:19,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:31:19,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1120889247, now seen corresponding path program 6 times [2021-10-29 05:31:19,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:31:19,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538572340] [2021-10-29 05:31:19,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:31:19,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:31:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:31:20,069 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 05:31:20,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:31:20,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538572340] [2021-10-29 05:31:20,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538572340] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:31:20,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:31:20,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:31:20,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553440913] [2021-10-29 05:31:20,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:31:20,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:31:20,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:31:20,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:31:20,072 INFO L87 Difference]: Start difference. First operand 102 states and 200 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 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 05:31:20,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:31:20,106 INFO L93 Difference]: Finished difference Result 140 states and 275 transitions. [2021-10-29 05:31:20,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:31:20,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2021-10-29 05:31:20,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:31:20,108 INFO L225 Difference]: With dead ends: 140 [2021-10-29 05:31:20,108 INFO L226 Difference]: Without dead ends: 124 [2021-10-29 05:31:20,108 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:31:20,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-29 05:31:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 102. [2021-10-29 05:31:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.9405940594059405) internal successors, (196), 101 states have internal predecessors, (196), 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 05:31:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 196 transitions. [2021-10-29 05:31:20,114 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 196 transitions. Word has length 23 [2021-10-29 05:31:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:31:20,115 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 196 transitions. [2021-10-29 05:31:20,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 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 05:31:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 196 transitions. [2021-10-29 05:31:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:31:20,116 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:31:20,116 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, 1, 1] [2021-10-29 05:31:20,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:31:20,116 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-29 05:31:20,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:31:20,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1036512195, now seen corresponding path program 7 times [2021-10-29 05:31:20,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:31:20,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487650383] [2021-10-29 05:31:20,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:31:20,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:31:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:31:20,155 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 05:31:20,155 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:31:20,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487650383] [2021-10-29 05:31:20,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487650383] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:31:20,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:31:20,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:31:20,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313622511] [2021-10-29 05:31:20,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:31:20,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:31:20,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:31:20,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:31:20,157 INFO L87 Difference]: Start difference. First operand 102 states and 196 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 05:31:20,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:31:20,165 INFO L93 Difference]: Finished difference Result 96 states and 183 transitions. [2021-10-29 05:31:20,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:31:20,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-10-29 05:31:20,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:31:20,167 INFO L225 Difference]: With dead ends: 96 [2021-10-29 05:31:20,167 INFO L226 Difference]: Without dead ends: 90 [2021-10-29 05:31:20,167 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:31:20,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-29 05:31:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-10-29 05:31:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.9325842696629214) internal successors, (172), 89 states have internal predecessors, (172), 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 05:31:20,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 172 transitions. [2021-10-29 05:31:20,172 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 172 transitions. Word has length 23 [2021-10-29 05:31:20,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:31:20,172 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 172 transitions. [2021-10-29 05:31:20,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 05:31:20,172 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 172 transitions. [2021-10-29 05:31:20,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:31:20,173 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:31:20,173 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, 1, 1] [2021-10-29 05:31:20,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 05:31:20,174 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-29 05:31:20,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:31:20,174 INFO L85 PathProgramCache]: Analyzing trace with hash -968010237, now seen corresponding path program 8 times [2021-10-29 05:31:20,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:31:20,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97478922] [2021-10-29 05:31:20,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:31:20,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:31:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:31:20,303 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 05:31:20,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:31:20,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97478922] [2021-10-29 05:31:20,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97478922] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:31:20,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:31:20,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 05:31:20,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714066770] [2021-10-29 05:31:20,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:31:20,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:31:20,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:31:20,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:31:20,306 INFO L87 Difference]: Start difference. First operand 90 states and 172 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 05:31:20,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:31:20,352 INFO L93 Difference]: Finished difference Result 50 states and 92 transitions. [2021-10-29 05:31:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:31:20,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2021-10-29 05:31:20,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:31:20,353 INFO L225 Difference]: With dead ends: 50 [2021-10-29 05:31:20,353 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:31:20,353 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:31:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:31:20,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:31:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:31:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:31:20,354 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-10-29 05:31:20,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:31:20,355 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:31:20,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 05:31:20,355 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:31:20,355 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:31:20,357 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:31:20,358 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-29 05:31:20,358 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-29 05:31:20,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 05:31:20,361 INFO L731 BasicCegarLoop]: Path program histogram: [8] [2021-10-29 05:31:20,363 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-29 05:31:20,363 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:31:20,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:31:20 BasicIcfg [2021-10-29 05:31:20,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:31:20,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:31:20,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:31:20,366 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:31:20,367 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:31:14" (3/4) ... [2021-10-29 05:31:20,370 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:31:20,376 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-29 05:31:20,376 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-29 05:31:20,381 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-29 05:31:20,381 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 05:31:20,382 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:31:20,382 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:31:20,420 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:31:20,421 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:31:20,422 INFO L168 Benchmark]: Toolchain (without parser) took 7291.13 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 72.7 MB in the beginning and 59.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 44.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:31:20,423 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 115.3 MB. Free memory is still 89.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:31:20,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.45 ms. Allocated memory is still 115.3 MB. Free memory was 72.5 MB in the beginning and 88.7 MB in the end (delta: -16.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:31:20,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.65 ms. Allocated memory is still 115.3 MB. Free memory was 88.7 MB in the beginning and 86.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:31:20,424 INFO L168 Benchmark]: Boogie Preprocessor took 30.64 ms. Allocated memory is still 115.3 MB. Free memory was 86.9 MB in the beginning and 85.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:31:20,425 INFO L168 Benchmark]: RCFGBuilder took 622.99 ms. Allocated memory is still 115.3 MB. Free memory was 85.4 MB in the beginning and 67.8 MB in the end (delta: 17.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:31:20,425 INFO L168 Benchmark]: TraceAbstraction took 6198.72 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 67.2 MB in the beginning and 62.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:31:20,426 INFO L168 Benchmark]: Witness Printer took 54.89 ms. Allocated memory is still 146.8 MB. Free memory was 61.4 MB in the beginning and 59.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:31:20,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 115.3 MB. Free memory is still 89.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.45 ms. Allocated memory is still 115.3 MB. Free memory was 72.5 MB in the beginning and 88.7 MB in the end (delta: -16.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.65 ms. Allocated memory is still 115.3 MB. Free memory was 88.7 MB in the beginning and 86.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.64 ms. Allocated memory is still 115.3 MB. Free memory was 86.9 MB in the beginning and 85.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 622.99 ms. Allocated memory is still 115.3 MB. Free memory was 85.4 MB in the beginning and 67.8 MB in the end (delta: 17.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6198.72 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 67.2 MB in the beginning and 62.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Witness Printer took 54.89 ms. Allocated memory is still 146.8 MB. Free memory was 61.4 MB in the beginning and 59.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 105 PlacesBefore, 33 PlacesAfterwards, 100 TransitionsBefore, 26 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 2927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1749, positive: 1546, positive conditional: 0, positive unconditional: 1546, negative: 203, negative conditional: 0, negative unconditional: 203, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 482, positive: 445, positive conditional: 0, positive unconditional: 445, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 482, positive: 436, positive conditional: 0, positive unconditional: 436, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 46, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 145, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 109, negative conditional: 0, negative unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1749, positive: 1101, positive conditional: 0, positive unconditional: 1101, negative: 166, negative conditional: 0, negative unconditional: 166, unknown: 482, unknown conditional: 0, unknown unconditional: 482] , Statistics on independence cache: Total cache size (in pairs): 142, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 130]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 125 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 202 SDslu, 545 SDs, 0 SdLazy, 259 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=0, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 104 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 620 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-29 05:31:20,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30b2cc4-c493-4e65-814d-5cbff06fc867/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...