./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.13.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0dcd4461cca64e9ab41b6ad7ff4c6eaa4177bddcca1c612fa1571b77ac664a95 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:23:10,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:23:10,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:23:10,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:23:10,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:23:10,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:23:10,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:23:10,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:23:10,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:23:10,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:23:10,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:23:10,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:23:10,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:23:10,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:23:10,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:23:10,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:23:10,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:23:10,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:23:10,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:23:10,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:23:10,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:23:10,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:23:10,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:23:10,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:23:10,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:23:10,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:23:10,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:23:10,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:23:10,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:23:10,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:23:10,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:23:10,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:23:10,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:23:10,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:23:10,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:23:10,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:23:10,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:23:10,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:23:10,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:23:10,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:23:10,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:23:10,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:23:10,132 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:23:10,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:23:10,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:23:10,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:23:10,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:23:10,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:23:10,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:23:10,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:23:10,135 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:23:10,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:23:10,135 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:23:10,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:23:10,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:23:10,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:23:10,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:23:10,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:23:10,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:23:10,137 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:23:10,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:23:10,137 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:23:10,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:23:10,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:23:10,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:23:10,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:23:10,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:23:10,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:23:10,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:23:10,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:23:10,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:23:10,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:23:10,139 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:23:10,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:23:10,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:23:10,140 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dcd4461cca64e9ab41b6ad7ff4c6eaa4177bddcca1c612fa1571b77ac664a95 [2022-11-20 12:23:10,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:23:10,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:23:10,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:23:10,494 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:23:10,495 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:23:10,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/systemc/token_ring.13.cil-2.c [2022-11-20 12:23:13,451 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:23:13,752 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:23:13,762 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/sv-benchmarks/c/systemc/token_ring.13.cil-2.c [2022-11-20 12:23:13,780 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN/data/457b4dba8/008cf2d46e834609a04e05521f6f2767/FLAGb342bab0f [2022-11-20 12:23:13,800 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN/data/457b4dba8/008cf2d46e834609a04e05521f6f2767 [2022-11-20 12:23:13,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:23:13,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:23:13,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:23:13,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:23:13,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:23:13,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:23:13" (1/1) ... [2022-11-20 12:23:13,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a716c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:13, skipping insertion in model container [2022-11-20 12:23:13,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:23:13" (1/1) ... [2022-11-20 12:23:13,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:23:13,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:23:14,053 WARN L237 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_282de863-330f-4a2b-89c3-1882b29644be/sv-benchmarks/c/systemc/token_ring.13.cil-2.c[671,684] [2022-11-20 12:23:14,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:23:14,221 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:23:14,233 WARN L237 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_282de863-330f-4a2b-89c3-1882b29644be/sv-benchmarks/c/systemc/token_ring.13.cil-2.c[671,684] [2022-11-20 12:23:14,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:23:14,333 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:23:14,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:14 WrapperNode [2022-11-20 12:23:14,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:23:14,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:23:14,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:23:14,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:23:14,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:14" (1/1) ... [2022-11-20 12:23:14,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:14" (1/1) ... [2022-11-20 12:23:14,467 INFO L138 Inliner]: procedures = 54, calls = 70, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 911 [2022-11-20 12:23:14,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:23:14,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:23:14,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:23:14,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:23:14,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:14" (1/1) ... [2022-11-20 12:23:14,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:14" (1/1) ... [2022-11-20 12:23:14,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:14" (1/1) ... [2022-11-20 12:23:14,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:14" (1/1) ... [2022-11-20 12:23:14,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:14" (1/1) ... [2022-11-20 12:23:14,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:14" (1/1) ... [2022-11-20 12:23:14,533 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:14" (1/1) ... [2022-11-20 12:23:14,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:14" (1/1) ... [2022-11-20 12:23:14,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:23:14,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:23:14,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:23:14,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:23:14,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:14" (1/1) ... [2022-11-20 12:23:14,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:23:14,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:14,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:23:14,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282de863-330f-4a2b-89c3-1882b29644be/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:23:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:23:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-20 12:23:14,618 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-20 12:23:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 12:23:14,619 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 12:23:14,619 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-20 12:23:14,619 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-20 12:23:14,621 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-20 12:23:14,622 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-20 12:23:14,622 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-20 12:23:14,623 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-20 12:23:14,623 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-20 12:23:14,623 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-20 12:23:14,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:23:14,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:23:14,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:23:14,836 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:23:14,839 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:23:15,789 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:23:15,810 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:23:15,810 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-20 12:23:15,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:23:15 BoogieIcfgContainer [2022-11-20 12:23:15,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:23:15,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:23:15,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:23:15,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:23:15,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:23:13" (1/3) ... [2022-11-20 12:23:15,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f656d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:23:15, skipping insertion in model container [2022-11-20 12:23:15,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:14" (2/3) ... [2022-11-20 12:23:15,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f656d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:23:15, skipping insertion in model container [2022-11-20 12:23:15,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:23:15" (3/3) ... [2022-11-20 12:23:15,831 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.13.cil-2.c [2022-11-20 12:23:15,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:23:15,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:23:15,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:23:15,921 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2e7cfe29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:23:15,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:23:15,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 407 states, 372 states have (on average 1.6666666666666667) internal successors, (620), 374 states have internal predecessors, (620), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-20 12:23:15,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 12:23:15,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:15,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:15,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:15,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:15,952 INFO L85 PathProgramCache]: Analyzing trace with hash 824370330, now seen corresponding path program 1 times [2022-11-20 12:23:15,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:15,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906702403] [2022-11-20 12:23:15,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:15,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:16,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:23:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:16,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:23:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:16,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:23:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:16,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:23:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:16,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 12:23:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:16,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:16,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906702403] [2022-11-20 12:23:16,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906702403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:16,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:16,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:23:16,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774279434] [2022-11-20 12:23:16,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:16,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:23:16,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:23:16,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:23:16,855 INFO L87 Difference]: Start difference. First operand has 407 states, 372 states have (on average 1.6666666666666667) internal successors, (620), 374 states have internal predecessors, (620), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:23:19,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:19,951 INFO L93 Difference]: Finished difference Result 954 states and 1591 transitions. [2022-11-20 12:23:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:23:19,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2022-11-20 12:23:19,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:19,983 INFO L225 Difference]: With dead ends: 954 [2022-11-20 12:23:19,983 INFO L226 Difference]: Without dead ends: 555 [2022-11-20 12:23:19,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:23:19,999 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1107 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:20,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 792 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 12:23:20,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-11-20 12:23:20,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 402. [2022-11-20 12:23:20,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 368 states have (on average 1.578804347826087) internal successors, (581), 369 states have internal predecessors, (581), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-20 12:23:20,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 635 transitions. [2022-11-20 12:23:20,168 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 635 transitions. Word has length 188 [2022-11-20 12:23:20,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:20,170 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 635 transitions. [2022-11-20 12:23:20,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:23:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 635 transitions. [2022-11-20 12:23:20,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 12:23:20,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:20,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:20,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:23:20,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:20,185 INFO L85 PathProgramCache]: Analyzing trace with hash 804829208, now seen corresponding path program 1 times [2022-11-20 12:23:20,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:20,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524940041] [2022-11-20 12:23:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:20,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:20,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:23:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:23:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:20,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:23:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:20,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:23:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:20,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 12:23:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:20,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:20,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524940041] [2022-11-20 12:23:20,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524940041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:20,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:20,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:23:20,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40694339] [2022-11-20 12:23:20,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:20,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:23:20,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:20,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:23:20,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:23:20,621 INFO L87 Difference]: Start difference. First operand 402 states and 635 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:23:25,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:25,510 INFO L93 Difference]: Finished difference Result 1490 states and 2402 transitions. [2022-11-20 12:23:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:23:25,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2022-11-20 12:23:25,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:25,519 INFO L225 Difference]: With dead ends: 1490 [2022-11-20 12:23:25,519 INFO L226 Difference]: Without dead ends: 1109 [2022-11-20 12:23:25,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:23:25,523 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1676 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:25,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 1377 Invalid, 2661 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 12:23:25,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-11-20 12:23:25,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 804. [2022-11-20 12:23:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 741 states have (on average 1.5897435897435896) internal successors, (1178), 743 states have internal predecessors, (1178), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-11-20 12:23:25,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1279 transitions. [2022-11-20 12:23:25,622 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1279 transitions. Word has length 188 [2022-11-20 12:23:25,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:25,622 INFO L495 AbstractCegarLoop]: Abstraction has 804 states and 1279 transitions. [2022-11-20 12:23:25,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:23:25,623 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1279 transitions. [2022-11-20 12:23:25,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 12:23:25,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:25,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:25,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:23:25,627 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:25,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1471509604, now seen corresponding path program 1 times [2022-11-20 12:23:25,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:25,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103913962] [2022-11-20 12:23:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:25,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:25,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:23:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:25,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:23:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:26,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:23:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:23:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 12:23:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:26,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:26,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:26,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103913962] [2022-11-20 12:23:26,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103913962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:26,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:26,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:23:26,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166282401] [2022-11-20 12:23:26,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:26,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:23:26,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:26,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:23:26,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:23:26,104 INFO L87 Difference]: Start difference. First operand 804 states and 1279 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:23:32,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:32,001 INFO L93 Difference]: Finished difference Result 2468 states and 3985 transitions. [2022-11-20 12:23:32,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:23:32,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2022-11-20 12:23:32,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:32,011 INFO L225 Difference]: With dead ends: 2468 [2022-11-20 12:23:32,012 INFO L226 Difference]: Without dead ends: 1685 [2022-11-20 12:23:32,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:23:32,016 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1723 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3846 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 3911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:32,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 2587 Invalid, 3911 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3846 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 12:23:32,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2022-11-20 12:23:32,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1177. [2022-11-20 12:23:32,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1085 states have (on average 1.5824884792626728) internal successors, (1717), 1088 states have internal predecessors, (1717), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2022-11-20 12:23:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1864 transitions. [2022-11-20 12:23:32,218 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1864 transitions. Word has length 188 [2022-11-20 12:23:32,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:32,218 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1864 transitions. [2022-11-20 12:23:32,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:23:32,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1864 transitions. [2022-11-20 12:23:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 12:23:32,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:32,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:32,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:23:32,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:32,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:32,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1098849370, now seen corresponding path program 1 times [2022-11-20 12:23:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:32,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919420084] [2022-11-20 12:23:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:32,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:32,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:23:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:32,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:23:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:23:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:32,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:23:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 12:23:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:32,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:32,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:32,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919420084] [2022-11-20 12:23:32,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919420084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:32,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:32,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:23:32,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200091125] [2022-11-20 12:23:32,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:32,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:23:32,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:32,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:23:32,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:23:32,634 INFO L87 Difference]: Start difference. First operand 1177 states and 1864 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:23:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:38,504 INFO L93 Difference]: Finished difference Result 3909 states and 6298 transitions. [2022-11-20 12:23:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:23:38,505 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2022-11-20 12:23:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:38,519 INFO L225 Difference]: With dead ends: 3909 [2022-11-20 12:23:38,520 INFO L226 Difference]: Without dead ends: 2753 [2022-11-20 12:23:38,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:23:38,525 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1717 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3825 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 3892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:38,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 2585 Invalid, 3892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3825 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 12:23:38,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2022-11-20 12:23:38,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 1927. [2022-11-20 12:23:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1777 states have (on average 1.5768148564997186) internal successors, (2802), 1782 states have internal predecessors, (2802), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-11-20 12:23:38,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 3045 transitions. [2022-11-20 12:23:38,823 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 3045 transitions. Word has length 188 [2022-11-20 12:23:38,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:38,823 INFO L495 AbstractCegarLoop]: Abstraction has 1927 states and 3045 transitions. [2022-11-20 12:23:38,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:23:38,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 3045 transitions. [2022-11-20 12:23:38,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 12:23:38,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:38,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:38,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:23:38,828 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:38,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:38,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1669121176, now seen corresponding path program 1 times [2022-11-20 12:23:38,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:38,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050523294] [2022-11-20 12:23:38,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:38,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:38,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:23:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:39,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:23:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:23:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:39,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:23:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:39,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 12:23:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:39,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:39,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050523294] [2022-11-20 12:23:39,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050523294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:39,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:39,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:23:39,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540781387] [2022-11-20 12:23:39,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:39,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:23:39,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:39,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:23:39,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:23:39,158 INFO L87 Difference]: Start difference. First operand 1927 states and 3045 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:23:45,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:45,064 INFO L93 Difference]: Finished difference Result 6685 states and 10723 transitions. [2022-11-20 12:23:45,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:23:45,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2022-11-20 12:23:45,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:45,090 INFO L225 Difference]: With dead ends: 6685 [2022-11-20 12:23:45,090 INFO L226 Difference]: Without dead ends: 4779 [2022-11-20 12:23:45,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:23:45,098 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1716 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3812 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 3879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:45,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1736 Valid, 2585 Invalid, 3879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3812 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 12:23:45,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2022-11-20 12:23:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 3428. [2022-11-20 12:23:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3162 states have (on average 1.5724225173940545) internal successors, (4972), 3171 states have internal predecessors, (4972), 203 states have call successors, (203), 54 states have call predecessors, (203), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-11-20 12:23:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5413 transitions. [2022-11-20 12:23:45,715 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5413 transitions. Word has length 188 [2022-11-20 12:23:45,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:45,716 INFO L495 AbstractCegarLoop]: Abstraction has 3428 states and 5413 transitions. [2022-11-20 12:23:45,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:23:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5413 transitions. [2022-11-20 12:23:45,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 12:23:45,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:45,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:45,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:23:45,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:45,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:45,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1221976934, now seen corresponding path program 1 times [2022-11-20 12:23:45,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:45,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983071148] [2022-11-20 12:23:45,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:45,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:23:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:45,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:23:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:46,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:23:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:46,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:23:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:46,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 12:23:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:46,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:46,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983071148] [2022-11-20 12:23:46,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983071148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:46,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:46,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:23:46,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696139218] [2022-11-20 12:23:46,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:46,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:23:46,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:46,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:23:46,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:23:46,127 INFO L87 Difference]: Start difference. First operand 3428 states and 5413 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:23:52,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:52,415 INFO L93 Difference]: Finished difference Result 12236 states and 19589 transitions. [2022-11-20 12:23:52,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:23:52,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2022-11-20 12:23:52,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:52,469 INFO L225 Difference]: With dead ends: 12236 [2022-11-20 12:23:52,469 INFO L226 Difference]: Without dead ends: 8829 [2022-11-20 12:23:52,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:23:52,486 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1715 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3799 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 3866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:52,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 2585 Invalid, 3866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3799 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-20 12:23:52,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8829 states. [2022-11-20 12:23:53,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8829 to 6437. [2022-11-20 12:23:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6437 states, 5939 states have (on average 1.5696245159117697) internal successors, (9322), 5956 states have internal predecessors, (9322), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-11-20 12:23:53,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6437 states to 6437 states and 10177 transitions. [2022-11-20 12:23:53,555 INFO L78 Accepts]: Start accepts. Automaton has 6437 states and 10177 transitions. Word has length 188 [2022-11-20 12:23:53,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:53,555 INFO L495 AbstractCegarLoop]: Abstraction has 6437 states and 10177 transitions. [2022-11-20 12:23:53,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:23:53,556 INFO L276 IsEmpty]: Start isEmpty. Operand 6437 states and 10177 transitions. [2022-11-20 12:23:53,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 12:23:53,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:53,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:53,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:23:53,562 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:53,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:53,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2007974824, now seen corresponding path program 1 times [2022-11-20 12:23:53,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:53,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584387238] [2022-11-20 12:23:53,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:53,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:53,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:23:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:53,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:23:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:53,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:23:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:23:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:53,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 12:23:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:53,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:53,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:53,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584387238] [2022-11-20 12:23:53,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584387238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:53,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:53,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:23:53,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833039879] [2022-11-20 12:23:53,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:53,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:23:53,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:53,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:23:53,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:23:53,891 INFO L87 Difference]: Start difference. First operand 6437 states and 10177 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:24:01,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:01,155 INFO L93 Difference]: Finished difference Result 23339 states and 37383 transitions. [2022-11-20 12:24:01,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:24:01,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2022-11-20 12:24:01,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:01,230 INFO L225 Difference]: With dead ends: 23339 [2022-11-20 12:24:01,230 INFO L226 Difference]: Without dead ends: 16923 [2022-11-20 12:24:01,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:24:01,255 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1826 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 3376 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 3479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:01,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 1691 Invalid, 3479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3376 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-20 12:24:01,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16923 states. [2022-11-20 12:24:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16923 to 12470. [2022-11-20 12:24:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12470 states, 11508 states have (on average 1.5679527285366701) internal successors, (18044), 11541 states have internal predecessors, (18044), 731 states have call successors, (731), 198 states have call predecessors, (731), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-11-20 12:24:03,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12470 states to 12470 states and 19781 transitions. [2022-11-20 12:24:03,188 INFO L78 Accepts]: Start accepts. Automaton has 12470 states and 19781 transitions. Word has length 188 [2022-11-20 12:24:03,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:03,188 INFO L495 AbstractCegarLoop]: Abstraction has 12470 states and 19781 transitions. [2022-11-20 12:24:03,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:24:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 12470 states and 19781 transitions. [2022-11-20 12:24:03,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 12:24:03,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:03,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:03,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:24:03,200 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:03,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:03,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1340592934, now seen corresponding path program 1 times [2022-11-20 12:24:03,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:03,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649766236] [2022-11-20 12:24:03,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:03,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:03,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:24:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:03,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:24:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:03,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:24:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:03,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:24:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:03,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 12:24:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:03,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:03,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649766236] [2022-11-20 12:24:03,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649766236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:03,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:03,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:24:03,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660876232] [2022-11-20 12:24:03,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:03,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:24:03,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:03,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:24:03,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:24:03,511 INFO L87 Difference]: Start difference. First operand 12470 states and 19781 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:24:14,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:14,144 INFO L93 Difference]: Finished difference Result 45546 states and 73165 transitions. [2022-11-20 12:24:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:24:14,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2022-11-20 12:24:14,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:14,280 INFO L225 Difference]: With dead ends: 45546 [2022-11-20 12:24:14,280 INFO L226 Difference]: Without dead ends: 33097 [2022-11-20 12:24:14,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:24:14,332 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1713 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3773 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 3840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:14,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 2585 Invalid, 3840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3773 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 12:24:14,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33097 states. [2022-11-20 12:24:17,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33097 to 24567. [2022-11-20 12:24:17,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24567 states, 22677 states have (on average 1.5669621202099042) internal successors, (35534), 22742 states have internal predecessors, (35534), 1435 states have call successors, (1435), 390 states have call predecessors, (1435), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-11-20 12:24:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24567 states to 24567 states and 39197 transitions. [2022-11-20 12:24:17,715 INFO L78 Accepts]: Start accepts. Automaton has 24567 states and 39197 transitions. Word has length 188 [2022-11-20 12:24:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:17,715 INFO L495 AbstractCegarLoop]: Abstraction has 24567 states and 39197 transitions. [2022-11-20 12:24:17,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:24:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 24567 states and 39197 transitions. [2022-11-20 12:24:17,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 12:24:17,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:17,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:17,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:24:17,732 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:17,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:17,733 INFO L85 PathProgramCache]: Analyzing trace with hash 759145496, now seen corresponding path program 1 times [2022-11-20 12:24:17,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:17,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762489101] [2022-11-20 12:24:17,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:17,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:17,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:24:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:17,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:24:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:17,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:24:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:24:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:18,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 12:24:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:18,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:18,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762489101] [2022-11-20 12:24:18,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762489101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:18,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:18,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:24:18,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435091534] [2022-11-20 12:24:18,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:18,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:24:18,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:18,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:24:18,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:24:18,027 INFO L87 Difference]: Start difference. First operand 24567 states and 39197 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:24:33,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:33,489 INFO L93 Difference]: Finished difference Result 89961 states and 145331 transitions. [2022-11-20 12:24:33,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:24:33,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2022-11-20 12:24:33,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:33,836 INFO L225 Difference]: With dead ends: 89961 [2022-11-20 12:24:33,836 INFO L226 Difference]: Without dead ends: 65415 [2022-11-20 12:24:33,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:24:33,957 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1712 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3760 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 3827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:33,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 2585 Invalid, 3827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3760 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 12:24:34,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65415 states. [2022-11-20 12:24:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65415 to 48824. [2022-11-20 12:24:41,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48824 states, 45078 states have (on average 1.5663516571276455) internal successors, (70608), 45207 states have internal predecessors, (70608), 2843 states have call successors, (2843), 774 states have call predecessors, (2843), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-11-20 12:24:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48824 states to 48824 states and 78609 transitions. [2022-11-20 12:24:41,376 INFO L78 Accepts]: Start accepts. Automaton has 48824 states and 78609 transitions. Word has length 188 [2022-11-20 12:24:41,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:41,376 INFO L495 AbstractCegarLoop]: Abstraction has 48824 states and 78609 transitions. [2022-11-20 12:24:41,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:24:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 48824 states and 78609 transitions. [2022-11-20 12:24:41,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 12:24:41,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:41,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:41,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:24:41,408 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:24:41,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:41,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1103973658, now seen corresponding path program 1 times [2022-11-20 12:24:41,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:41,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533819816] [2022-11-20 12:24:41,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:41,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:41,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:24:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:41,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:24:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:41,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:24:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:41,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:24:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:41,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 12:24:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:41,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:42,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533819816] [2022-11-20 12:24:42,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533819816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:42,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:42,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:24:42,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049735056] [2022-11-20 12:24:42,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:42,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:24:42,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:42,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:24:42,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:24:42,010 INFO L87 Difference]: Start difference. First operand 48824 states and 78609 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)