./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:05:47,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:05:47,142 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-25 00:05:47,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:05:47,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:05:47,189 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:05:47,190 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:05:47,191 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:05:47,192 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:05:47,197 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:05:47,198 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:05:47,199 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:05:47,199 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:05:47,201 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:05:47,202 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:05:47,202 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:05:47,203 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:05:47,203 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:05:47,204 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:05:47,204 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:05:47,205 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:05:47,206 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:05:47,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:05:47,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:05:47,208 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:05:47,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:05:47,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:05:47,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:05:47,211 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:05:47,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:05:47,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:05:47,213 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:05:47,213 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:05:47,214 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:05:47,214 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:05:47,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:05:47,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:05:47,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:47,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:05:47,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:05:47,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:05:47,217 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:05:47,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:05:47,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:05:47,218 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:05:47,218 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:05:47,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:05:47,219 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2023-11-25 00:05:47,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:05:47,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:05:47,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:05:47,547 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:05:47,548 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:05:47,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/pthread/queue_longer.i [2023-11-25 00:05:50,518 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:05:50,914 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:05:50,914 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/sv-benchmarks/c/pthread/queue_longer.i [2023-11-25 00:05:50,934 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/data/ae8d43988/7ef22b4ccb6b4c7fa79fdf2164690539/FLAG5883449d8 [2023-11-25 00:05:50,953 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/data/ae8d43988/7ef22b4ccb6b4c7fa79fdf2164690539 [2023-11-25 00:05:50,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:05:50,961 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:05:50,964 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:50,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:05:50,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:05:50,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:50" (1/1) ... [2023-11-25 00:05:50,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da88202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:50, skipping insertion in model container [2023-11-25 00:05:50,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:50" (1/1) ... [2023-11-25 00:05:51,044 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:05:51,627 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2023-11-25 00:05:51,635 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2023-11-25 00:05:51,639 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2023-11-25 00:05:51,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:51,658 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:05:51,715 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2023-11-25 00:05:51,722 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2023-11-25 00:05:51,727 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2023-11-25 00:05:51,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:51,844 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:05:51,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51 WrapperNode [2023-11-25 00:05:51,845 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:51,846 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:05:51,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:05:51,847 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:05:51,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,955 INFO L138 Inliner]: procedures = 275, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 251 [2023-11-25 00:05:51,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:05:51,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:05:51,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:05:51,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:05:51,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,983 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:51,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:52,011 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:52,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:52,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:52,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:52,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:05:52,042 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:05:52,042 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:05:52,042 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:05:52,043 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (1/1) ... [2023-11-25 00:05:52,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:52,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:52,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:05:52,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:05:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-25 00:05:52,132 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-25 00:05:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-25 00:05:52,132 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-25 00:05:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:05:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:05:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-25 00:05:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:05:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:05:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-25 00:05:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:05:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:05:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:05:52,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:05:52,139 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-25 00:05:52,329 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:05:52,331 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:05:52,829 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:05:53,316 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:05:53,316 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-25 00:05:53,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:53 BoogieIcfgContainer [2023-11-25 00:05:53,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:05:53,322 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:05:53,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:05:53,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:05:53,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:05:50" (1/3) ... [2023-11-25 00:05:53,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5937c83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:53, skipping insertion in model container [2023-11-25 00:05:53,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:51" (2/3) ... [2023-11-25 00:05:53,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5937c83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:53, skipping insertion in model container [2023-11-25 00:05:53,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:53" (3/3) ... [2023-11-25 00:05:53,331 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-11-25 00:05:53,341 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-25 00:05:53,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:05:53,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-25 00:05:53,353 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-25 00:05:53,436 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-25 00:05:53,479 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 48 transitions, 110 flow [2023-11-25 00:05:53,569 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 426 states, 422 states have (on average 2.7156398104265405) internal successors, (1146), 425 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:53,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:05:53,602 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25632b1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:05:53,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-25 00:05:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 426 states, 422 states have (on average 2.7156398104265405) internal successors, (1146), 425 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-25 00:05:53,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:53,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-25 00:05:53,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:05:53,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:53,629 INFO L85 PathProgramCache]: Analyzing trace with hash 648967, now seen corresponding path program 1 times [2023-11-25 00:05:53,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:53,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83052333] [2023-11-25 00:05:53,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:53,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:53,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:53,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83052333] [2023-11-25 00:05:53,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83052333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:53,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:53,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:05:53,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931246848] [2023-11-25 00:05:53,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:53,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-25 00:05:53,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:53,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-25 00:05:53,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:05:53,969 INFO L87 Difference]: Start difference. First operand has 426 states, 422 states have (on average 2.7156398104265405) internal successors, (1146), 425 states have internal predecessors, (1146), 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 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:54,102 INFO L93 Difference]: Finished difference Result 424 states and 1085 transitions. [2023-11-25 00:05:54,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-25 00:05:54,106 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-25 00:05:54,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:54,132 INFO L225 Difference]: With dead ends: 424 [2023-11-25 00:05:54,132 INFO L226 Difference]: Without dead ends: 424 [2023-11-25 00:05:54,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:05:54,138 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:54,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:05:54,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-11-25 00:05:54,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2023-11-25 00:05:54,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 421 states have (on average 2.5771971496437054) internal successors, (1085), 423 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:54,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1085 transitions. [2023-11-25 00:05:54,234 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1085 transitions. Word has length 3 [2023-11-25 00:05:54,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:54,236 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 1085 transitions. [2023-11-25 00:05:54,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:54,237 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1085 transitions. [2023-11-25 00:05:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-25 00:05:54,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:54,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:54,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:05:54,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:05:54,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash 45317787, now seen corresponding path program 1 times [2023-11-25 00:05:54,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:54,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655391161] [2023-11-25 00:05:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:54,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:54,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:54,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655391161] [2023-11-25 00:05:54,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655391161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:54,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:54,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:05:54,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935782129] [2023-11-25 00:05:54,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:54,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:05:54,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:54,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:05:54,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:54,511 INFO L87 Difference]: Start difference. First operand 424 states and 1085 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:54,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:54,663 INFO L93 Difference]: Finished difference Result 424 states and 1059 transitions. [2023-11-25 00:05:54,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:05:54,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-25 00:05:54,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:54,669 INFO L225 Difference]: With dead ends: 424 [2023-11-25 00:05:54,669 INFO L226 Difference]: Without dead ends: 424 [2023-11-25 00:05:54,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:54,671 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:54,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 18 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:05:54,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-11-25 00:05:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2023-11-25 00:05:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 421 states have (on average 2.5154394299287413) internal successors, (1059), 423 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:54,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1059 transitions. [2023-11-25 00:05:54,702 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1059 transitions. Word has length 9 [2023-11-25 00:05:54,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:54,703 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 1059 transitions. [2023-11-25 00:05:54,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1059 transitions. [2023-11-25 00:05:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:05:54,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:54,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:54,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:05:54,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:05:54,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:54,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1404853059, now seen corresponding path program 1 times [2023-11-25 00:05:54,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:54,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553805601] [2023-11-25 00:05:54,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:54,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:55,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:55,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553805601] [2023-11-25 00:05:55,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553805601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:55,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:55,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:05:55,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089286576] [2023-11-25 00:05:55,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:55,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:05:55,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:55,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:05:55,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:05:55,928 INFO L87 Difference]: Start difference. First operand 424 states and 1059 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:56,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:56,206 INFO L93 Difference]: Finished difference Result 452 states and 1127 transitions. [2023-11-25 00:05:56,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:05:56,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-25 00:05:56,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:56,211 INFO L225 Difference]: With dead ends: 452 [2023-11-25 00:05:56,211 INFO L226 Difference]: Without dead ends: 450 [2023-11-25 00:05:56,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:05:56,213 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:56,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 40 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:05:56,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-11-25 00:05:56,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 445. [2023-11-25 00:05:56,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 442 states have (on average 2.520361990950226) internal successors, (1114), 444 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:56,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1114 transitions. [2023-11-25 00:05:56,256 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1114 transitions. Word has length 10 [2023-11-25 00:05:56,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:56,257 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 1114 transitions. [2023-11-25 00:05:56,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:56,257 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1114 transitions. [2023-11-25 00:05:56,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-25 00:05:56,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:56,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:56,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:05:56,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:05:56,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash 460803351, now seen corresponding path program 1 times [2023-11-25 00:05:56,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:56,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698390623] [2023-11-25 00:05:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:56,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:56,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:56,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698390623] [2023-11-25 00:05:56,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698390623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:56,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:56,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:05:56,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000580286] [2023-11-25 00:05:56,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:56,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:05:56,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:56,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:05:56,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:05:56,986 INFO L87 Difference]: Start difference. First operand 445 states and 1114 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:57,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:57,270 INFO L93 Difference]: Finished difference Result 667 states and 1679 transitions. [2023-11-25 00:05:57,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:05:57,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-25 00:05:57,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:57,278 INFO L225 Difference]: With dead ends: 667 [2023-11-25 00:05:57,278 INFO L226 Difference]: Without dead ends: 655 [2023-11-25 00:05:57,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:05:57,290 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 69 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:57,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 46 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:05:57,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-11-25 00:05:57,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 496. [2023-11-25 00:05:57,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 493 states have (on average 2.5334685598377282) internal successors, (1249), 495 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1249 transitions. [2023-11-25 00:05:57,319 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1249 transitions. Word has length 11 [2023-11-25 00:05:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:57,320 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 1249 transitions. [2023-11-25 00:05:57,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:57,320 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1249 transitions. [2023-11-25 00:05:57,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-25 00:05:57,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:57,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:57,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-25 00:05:57,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:05:57,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash 599637629, now seen corresponding path program 2 times [2023-11-25 00:05:57,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:57,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665976303] [2023-11-25 00:05:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:57,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:58,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:58,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665976303] [2023-11-25 00:05:58,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665976303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:58,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:58,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:05:58,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480953048] [2023-11-25 00:05:58,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:58,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:05:58,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:58,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:05:58,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:05:58,561 INFO L87 Difference]: Start difference. First operand 496 states and 1249 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:58,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:58,958 INFO L93 Difference]: Finished difference Result 736 states and 1864 transitions. [2023-11-25 00:05:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:05:58,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-25 00:05:58,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:58,965 INFO L225 Difference]: With dead ends: 736 [2023-11-25 00:05:58,966 INFO L226 Difference]: Without dead ends: 730 [2023-11-25 00:05:58,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:05:58,967 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 87 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:58,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 57 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:05:58,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-11-25 00:05:58,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 484. [2023-11-25 00:05:58,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 481 states have (on average 2.5384615384615383) internal successors, (1221), 483 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1221 transitions. [2023-11-25 00:05:58,992 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1221 transitions. Word has length 11 [2023-11-25 00:05:58,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:58,993 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 1221 transitions. [2023-11-25 00:05:58,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1221 transitions. [2023-11-25 00:05:58,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-25 00:05:58,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:58,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:58,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-25 00:05:58,995 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:05:58,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:58,996 INFO L85 PathProgramCache]: Analyzing trace with hash 539130094, now seen corresponding path program 1 times [2023-11-25 00:05:58,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:58,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737085690] [2023-11-25 00:05:58,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:58,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:59,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:59,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737085690] [2023-11-25 00:05:59,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737085690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:59,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:59,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:05:59,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624742988] [2023-11-25 00:05:59,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:59,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:05:59,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:59,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:05:59,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:59,069 INFO L87 Difference]: Start difference. First operand 484 states and 1221 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:59,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:59,153 INFO L93 Difference]: Finished difference Result 424 states and 1033 transitions. [2023-11-25 00:05:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:05:59,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-25 00:05:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:59,157 INFO L225 Difference]: With dead ends: 424 [2023-11-25 00:05:59,157 INFO L226 Difference]: Without dead ends: 372 [2023-11-25 00:05:59,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:59,159 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:59,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 10 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:05:59,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-11-25 00:05:59,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2023-11-25 00:05:59,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 2.444743935309973) internal successors, (907), 371 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:59,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 907 transitions. [2023-11-25 00:05:59,176 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 907 transitions. Word has length 13 [2023-11-25 00:05:59,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:59,176 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 907 transitions. [2023-11-25 00:05:59,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:59,177 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 907 transitions. [2023-11-25 00:05:59,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-25 00:05:59,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:59,186 INFO L195 NwaCegarLoop]: 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] [2023-11-25 00:05:59,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-25 00:05:59,187 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:05:59,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:59,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1683479307, now seen corresponding path program 1 times [2023-11-25 00:05:59,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:59,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581737238] [2023-11-25 00:05:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:59,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:59,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:59,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:59,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581737238] [2023-11-25 00:05:59,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581737238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:59,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:59,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:05:59,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969653538] [2023-11-25 00:05:59,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:59,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:05:59,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:59,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:05:59,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:59,330 INFO L87 Difference]: Start difference. First operand 372 states and 907 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) [2023-11-25 00:05:59,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:59,452 INFO L93 Difference]: Finished difference Result 302 states and 688 transitions. [2023-11-25 00:05:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:05:59,453 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 [2023-11-25 00:05:59,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:59,456 INFO L225 Difference]: With dead ends: 302 [2023-11-25 00:05:59,456 INFO L226 Difference]: Without dead ends: 302 [2023-11-25 00:05:59,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:59,457 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:59,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 12 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:05:59,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-25 00:05:59,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 292. [2023-11-25 00:05:59,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 290 states have (on average 2.296551724137931) internal successors, (666), 291 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 666 transitions. [2023-11-25 00:05:59,477 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 666 transitions. Word has length 23 [2023-11-25 00:05:59,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:59,478 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 666 transitions. [2023-11-25 00:05:59,478 INFO L496 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) [2023-11-25 00:05:59,479 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 666 transitions. [2023-11-25 00:05:59,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-25 00:05:59,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:59,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:59,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-25 00:05:59,481 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:05:59,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:59,482 INFO L85 PathProgramCache]: Analyzing trace with hash 504120755, now seen corresponding path program 1 times [2023-11-25 00:05:59,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:59,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749301651] [2023-11-25 00:05:59,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:59,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:02,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:02,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749301651] [2023-11-25 00:06:02,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749301651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:02,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:02,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-25 00:06:02,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542992394] [2023-11-25 00:06:02,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:02,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:06:02,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:02,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:06:02,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:06:02,182 INFO L87 Difference]: Start difference. First operand 292 states and 666 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:02,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:02,819 INFO L93 Difference]: Finished difference Result 478 states and 1096 transitions. [2023-11-25 00:06:02,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:06:02,820 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 24 [2023-11-25 00:06:02,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:02,823 INFO L225 Difference]: With dead ends: 478 [2023-11-25 00:06:02,824 INFO L226 Difference]: Without dead ends: 472 [2023-11-25 00:06:02,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-25 00:06:02,825 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 78 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:02,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 70 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-25 00:06:02,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2023-11-25 00:06:02,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 390. [2023-11-25 00:06:02,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 388 states have (on average 2.306701030927835) internal successors, (895), 389 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:02,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 895 transitions. [2023-11-25 00:06:02,843 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 895 transitions. Word has length 24 [2023-11-25 00:06:02,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:02,844 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 895 transitions. [2023-11-25 00:06:02,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:02,844 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 895 transitions. [2023-11-25 00:06:02,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-25 00:06:02,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:02,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:02,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-25 00:06:02,848 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:06:02,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1566241837, now seen corresponding path program 2 times [2023-11-25 00:06:02,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:02,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632672468] [2023-11-25 00:06:02,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:02,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:05,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:05,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632672468] [2023-11-25 00:06:05,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632672468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:05,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:05,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-25 00:06:05,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948946471] [2023-11-25 00:06:05,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:05,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:06:05,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:05,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:06:05,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:06:05,739 INFO L87 Difference]: Start difference. First operand 390 states and 895 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:06,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:06,294 INFO L93 Difference]: Finished difference Result 666 states and 1528 transitions. [2023-11-25 00:06:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:06:06,295 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 24 [2023-11-25 00:06:06,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:06,300 INFO L225 Difference]: With dead ends: 666 [2023-11-25 00:06:06,300 INFO L226 Difference]: Without dead ends: 660 [2023-11-25 00:06:06,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:06:06,303 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 77 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:06,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 93 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-25 00:06:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-11-25 00:06:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 393. [2023-11-25 00:06:06,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 391 states have (on average 2.3069053708439897) internal successors, (902), 392 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:06,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 902 transitions. [2023-11-25 00:06:06,322 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 902 transitions. Word has length 24 [2023-11-25 00:06:06,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:06,322 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 902 transitions. [2023-11-25 00:06:06,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:06,323 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 902 transitions. [2023-11-25 00:06:06,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-25 00:06:06,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:06,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:06,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-25 00:06:06,325 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:06:06,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:06,330 INFO L85 PathProgramCache]: Analyzing trace with hash -380943149, now seen corresponding path program 3 times [2023-11-25 00:06:06,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:06,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68641803] [2023-11-25 00:06:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:06,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:07,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:07,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68641803] [2023-11-25 00:06:07,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68641803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:07,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:07,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-25 00:06:07,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099713835] [2023-11-25 00:06:07,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:07,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:06:07,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:07,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:06:07,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:06:07,951 INFO L87 Difference]: Start difference. First operand 393 states and 902 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:08,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:08,583 INFO L93 Difference]: Finished difference Result 674 states and 1562 transitions. [2023-11-25 00:06:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:06:08,583 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 24 [2023-11-25 00:06:08,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:08,589 INFO L225 Difference]: With dead ends: 674 [2023-11-25 00:06:08,589 INFO L226 Difference]: Without dead ends: 668 [2023-11-25 00:06:08,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:06:08,590 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 96 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:08,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 101 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:06:08,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2023-11-25 00:06:08,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 431. [2023-11-25 00:06:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 429 states have (on average 2.3076923076923075) internal successors, (990), 430 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 990 transitions. [2023-11-25 00:06:08,613 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 990 transitions. Word has length 24 [2023-11-25 00:06:08,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:08,614 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 990 transitions. [2023-11-25 00:06:08,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:08,614 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 990 transitions. [2023-11-25 00:06:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-25 00:06:08,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:08,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:08,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-25 00:06:08,617 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:06:08,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:08,618 INFO L85 PathProgramCache]: Analyzing trace with hash -731189643, now seen corresponding path program 4 times [2023-11-25 00:06:08,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:08,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753722699] [2023-11-25 00:06:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:08,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:10,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:10,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753722699] [2023-11-25 00:06:10,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753722699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:10,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:10,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-25 00:06:10,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243405784] [2023-11-25 00:06:10,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:10,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:06:10,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:10,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:06:10,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:06:10,161 INFO L87 Difference]: Start difference. First operand 431 states and 990 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:10,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:10,828 INFO L93 Difference]: Finished difference Result 612 states and 1407 transitions. [2023-11-25 00:06:10,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:06:10,829 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 24 [2023-11-25 00:06:10,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:10,833 INFO L225 Difference]: With dead ends: 612 [2023-11-25 00:06:10,834 INFO L226 Difference]: Without dead ends: 606 [2023-11-25 00:06:10,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:06:10,834 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 70 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:10,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 113 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:06:10,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2023-11-25 00:06:10,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 431. [2023-11-25 00:06:10,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 429 states have (on average 2.3076923076923075) internal successors, (990), 430 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 990 transitions. [2023-11-25 00:06:10,854 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 990 transitions. Word has length 24 [2023-11-25 00:06:10,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:10,854 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 990 transitions. [2023-11-25 00:06:10,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:10,855 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 990 transitions. [2023-11-25 00:06:10,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-25 00:06:10,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:10,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:10,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-25 00:06:10,857 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:06:10,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:10,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1002251019, now seen corresponding path program 5 times [2023-11-25 00:06:10,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:10,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439020528] [2023-11-25 00:06:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:10,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:12,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:12,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439020528] [2023-11-25 00:06:12,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439020528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:12,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:12,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-25 00:06:12,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921125363] [2023-11-25 00:06:12,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:12,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:06:12,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:12,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:06:12,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:06:12,396 INFO L87 Difference]: Start difference. First operand 431 states and 990 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:12,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:12,993 INFO L93 Difference]: Finished difference Result 662 states and 1520 transitions. [2023-11-25 00:06:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:06:12,994 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 24 [2023-11-25 00:06:12,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:13,000 INFO L225 Difference]: With dead ends: 662 [2023-11-25 00:06:13,000 INFO L226 Difference]: Without dead ends: 656 [2023-11-25 00:06:13,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:06:13,001 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 79 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:13,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 101 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:06:13,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-11-25 00:06:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 431. [2023-11-25 00:06:13,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 429 states have (on average 2.3076923076923075) internal successors, (990), 430 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:13,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 990 transitions. [2023-11-25 00:06:13,028 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 990 transitions. Word has length 24 [2023-11-25 00:06:13,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:13,028 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 990 transitions. [2023-11-25 00:06:13,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:13,029 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 990 transitions. [2023-11-25 00:06:13,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-25 00:06:13,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:13,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:13,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-25 00:06:13,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:06:13,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:13,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1349253041, now seen corresponding path program 6 times [2023-11-25 00:06:13,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:13,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390761882] [2023-11-25 00:06:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:13,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:14,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:14,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390761882] [2023-11-25 00:06:14,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390761882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:14,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:14,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-25 00:06:14,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054251124] [2023-11-25 00:06:14,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:14,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:06:14,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:14,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:06:14,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:06:14,472 INFO L87 Difference]: Start difference. First operand 431 states and 990 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:15,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:15,059 INFO L93 Difference]: Finished difference Result 775 states and 1782 transitions. [2023-11-25 00:06:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:06:15,059 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 24 [2023-11-25 00:06:15,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:15,065 INFO L225 Difference]: With dead ends: 775 [2023-11-25 00:06:15,066 INFO L226 Difference]: Without dead ends: 769 [2023-11-25 00:06:15,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-25 00:06:15,067 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 79 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:15,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 99 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-25 00:06:15,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2023-11-25 00:06:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 431. [2023-11-25 00:06:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 429 states have (on average 2.3076923076923075) internal successors, (990), 430 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 990 transitions. [2023-11-25 00:06:15,089 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 990 transitions. Word has length 24 [2023-11-25 00:06:15,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:15,090 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 990 transitions. [2023-11-25 00:06:15,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:15,090 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 990 transitions. [2023-11-25 00:06:15,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-25 00:06:15,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:15,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:15,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-25 00:06:15,093 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:06:15,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:15,093 INFO L85 PathProgramCache]: Analyzing trace with hash -163954353, now seen corresponding path program 7 times [2023-11-25 00:06:15,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:15,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447470371] [2023-11-25 00:06:15,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:15,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:16,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:16,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447470371] [2023-11-25 00:06:16,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447470371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:16,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:16,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-25 00:06:16,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958434385] [2023-11-25 00:06:16,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:16,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:06:16,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:16,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:06:16,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:06:16,885 INFO L87 Difference]: Start difference. First operand 431 states and 990 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:17,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:17,680 INFO L93 Difference]: Finished difference Result 875 states and 2027 transitions. [2023-11-25 00:06:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-25 00:06:17,680 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 24 [2023-11-25 00:06:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:17,689 INFO L225 Difference]: With dead ends: 875 [2023-11-25 00:06:17,689 INFO L226 Difference]: Without dead ends: 869 [2023-11-25 00:06:17,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-25 00:06:17,690 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 125 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:17,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 113 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:06:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2023-11-25 00:06:17,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 428. [2023-11-25 00:06:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 426 states have (on average 2.307511737089202) internal successors, (983), 427 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:17,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 983 transitions. [2023-11-25 00:06:17,716 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 983 transitions. Word has length 24 [2023-11-25 00:06:17,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:17,717 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 983 transitions. [2023-11-25 00:06:17,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:17,717 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 983 transitions. [2023-11-25 00:06:17,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-25 00:06:17,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:17,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:17,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-25 00:06:17,721 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:06:17,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1249189489, now seen corresponding path program 8 times [2023-11-25 00:06:17,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:17,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360558833] [2023-11-25 00:06:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:17,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:19,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:19,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360558833] [2023-11-25 00:06:19,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360558833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:19,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:19,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-25 00:06:19,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372506566] [2023-11-25 00:06:19,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:19,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:06:19,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:19,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:06:19,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:06:19,643 INFO L87 Difference]: Start difference. First operand 428 states and 983 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:20,484 INFO L93 Difference]: Finished difference Result 728 states and 1693 transitions. [2023-11-25 00:06:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:06:20,485 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 24 [2023-11-25 00:06:20,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:20,490 INFO L225 Difference]: With dead ends: 728 [2023-11-25 00:06:20,491 INFO L226 Difference]: Without dead ends: 722 [2023-11-25 00:06:20,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:06:20,492 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 76 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:20,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 133 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-25 00:06:20,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-11-25 00:06:20,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 432. [2023-11-25 00:06:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 430 states have (on average 2.3069767441860467) internal successors, (992), 431 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:20,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 992 transitions. [2023-11-25 00:06:20,513 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 992 transitions. Word has length 24 [2023-11-25 00:06:20,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:20,514 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 992 transitions. [2023-11-25 00:06:20,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:20,514 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 992 transitions. [2023-11-25 00:06:20,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-25 00:06:20,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:20,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:20,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-25 00:06:20,516 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:06:20,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:20,518 INFO L85 PathProgramCache]: Analyzing trace with hash -393850255, now seen corresponding path program 9 times [2023-11-25 00:06:20,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:20,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846001898] [2023-11-25 00:06:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:20,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:22,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:22,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846001898] [2023-11-25 00:06:22,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846001898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:22,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:22,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-25 00:06:22,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239936495] [2023-11-25 00:06:22,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:22,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:06:22,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:22,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:06:22,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:06:22,568 INFO L87 Difference]: Start difference. First operand 432 states and 992 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:23,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:23,278 INFO L93 Difference]: Finished difference Result 658 states and 1520 transitions. [2023-11-25 00:06:23,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:06:23,278 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 24 [2023-11-25 00:06:23,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:23,283 INFO L225 Difference]: With dead ends: 658 [2023-11-25 00:06:23,284 INFO L226 Difference]: Without dead ends: 652 [2023-11-25 00:06:23,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-25 00:06:23,285 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 60 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:23,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 116 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:06:23,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-11-25 00:06:23,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 423. [2023-11-25 00:06:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 421 states have (on average 2.3064133016627077) internal successors, (971), 422 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 971 transitions. [2023-11-25 00:06:23,304 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 971 transitions. Word has length 24 [2023-11-25 00:06:23,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:23,305 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 971 transitions. [2023-11-25 00:06:23,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:23,306 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 971 transitions. [2023-11-25 00:06:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-25 00:06:23,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:23,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:23,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-25 00:06:23,308 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:06:23,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:23,308 INFO L85 PathProgramCache]: Analyzing trace with hash 137145971, now seen corresponding path program 10 times [2023-11-25 00:06:23,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:23,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673742357] [2023-11-25 00:06:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:23,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:25,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673742357] [2023-11-25 00:06:25,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673742357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:25,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:25,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-25 00:06:25,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224760966] [2023-11-25 00:06:25,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:25,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:06:25,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:25,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:06:25,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:06:25,079 INFO L87 Difference]: Start difference. First operand 423 states and 971 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:25,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:25,847 INFO L93 Difference]: Finished difference Result 795 states and 1844 transitions. [2023-11-25 00:06:25,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-25 00:06:25,848 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 24 [2023-11-25 00:06:25,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:25,854 INFO L225 Difference]: With dead ends: 795 [2023-11-25 00:06:25,854 INFO L226 Difference]: Without dead ends: 789 [2023-11-25 00:06:25,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-11-25 00:06:25,855 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 88 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:25,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 124 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:06:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2023-11-25 00:06:25,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 420. [2023-11-25 00:06:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 418 states have (on average 2.3014354066985647) internal successors, (962), 419 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:25,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 962 transitions. [2023-11-25 00:06:25,879 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 962 transitions. Word has length 24 [2023-11-25 00:06:25,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:25,879 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 962 transitions. [2023-11-25 00:06:25,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:25,880 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 962 transitions. [2023-11-25 00:06:25,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-25 00:06:25,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:25,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:25,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-25 00:06:25,884 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-25 00:06:25,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:25,884 INFO L85 PathProgramCache]: Analyzing trace with hash -673498585, now seen corresponding path program 1 times [2023-11-25 00:06:25,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:25,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333138052] [2023-11-25 00:06:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:25,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:28,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:28,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333138052] [2023-11-25 00:06:28,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333138052] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:06:28,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313242087] [2023-11-25 00:06:28,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:28,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:28,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:28,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:06:28,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b92919-4ff5-47d6-81d3-d8c140d08a21/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:06:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:28,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-25 00:06:28,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:29,046 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-25 00:06:29,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-25 00:06:29,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:06:29,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2023-11-25 00:06:29,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2023-11-25 00:06:29,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2023-11-25 00:06:29,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 131 [2023-11-25 00:06:29,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:06:29,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2023-11-25 00:06:29,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-25 00:06:30,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:06:30,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 111 [2023-11-25 00:06:30,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:06:30,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:06:30,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 37 [2023-11-25 00:06:30,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 40