./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.08.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS --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 19daebdfafed51668fa57cd9e9dbb1892c2070de71da48d425d8df389215d260 --- 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-4e7fbc6 [2022-11-23 03:08:40,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:08:40,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:08:40,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:08:40,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:08:40,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:08:40,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:08:40,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:08:40,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:08:40,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:08:40,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:08:40,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:08:40,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:08:40,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:08:40,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:08:40,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:08:40,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:08:40,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:08:40,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:08:40,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:08:40,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:08:40,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:08:40,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:08:40,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:08:40,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:08:40,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:08:40,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:08:40,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:08:40,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:08:40,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:08:40,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:08:40,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:08:40,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:08:40,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:08:40,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:08:40,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:08:40,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:08:40,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:08:40,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:08:40,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:08:40,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:08:40,600 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:08:40,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:08:40,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:08:40,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:08:40,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:08:40,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:08:40,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:08:40,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:08:40,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:08:40,622 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:08:40,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:08:40,623 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:08:40,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:08:40,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:08:40,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:08:40,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:08:40,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:08:40,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:08:40,624 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:08:40,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:08:40,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:08:40,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:08:40,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:08:40,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:08:40,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:08:40,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:08:40,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:08:40,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:08:40,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:08:40,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:08:40,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:08:40,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:08:40,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:08:40,628 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:08:40,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:08:40,628 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19daebdfafed51668fa57cd9e9dbb1892c2070de71da48d425d8df389215d260 [2022-11-23 03:08:40,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:08:40,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:08:40,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:08:40,930 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:08:40,930 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:08:40,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/systemc/token_ring.08.cil-2.c [2022-11-23 03:08:44,202 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:08:44,439 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:08:44,440 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc4a3a8-f102-42ce-9871-5e48c2f81431/sv-benchmarks/c/systemc/token_ring.08.cil-2.c [2022-11-23 03:08:44,473 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS/data/e919cff2f/3c46b123c5074b2ea82e9784a520fc50/FLAGd7d56d24d [2022-11-23 03:08:44,493 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS/data/e919cff2f/3c46b123c5074b2ea82e9784a520fc50 [2022-11-23 03:08:44,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:08:44,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:08:44,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:08:44,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:08:44,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:08:44,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:08:44" (1/1) ... [2022-11-23 03:08:44,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4196e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:44, skipping insertion in model container [2022-11-23 03:08:44,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:08:44" (1/1) ... [2022-11-23 03:08:44,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:08:44,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:08:44,735 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_8cc4a3a8-f102-42ce-9871-5e48c2f81431/sv-benchmarks/c/systemc/token_ring.08.cil-2.c[671,684] [2022-11-23 03:08:44,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:08:44,924 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:08:44,937 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_8cc4a3a8-f102-42ce-9871-5e48c2f81431/sv-benchmarks/c/systemc/token_ring.08.cil-2.c[671,684] [2022-11-23 03:08:45,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:08:45,023 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:08:45,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:45 WrapperNode [2022-11-23 03:08:45,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:08:45,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:08:45,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:08:45,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:08:45,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:45" (1/1) ... [2022-11-23 03:08:45,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:45" (1/1) ... [2022-11-23 03:08:45,105 INFO L138 Inliner]: procedures = 44, calls = 56, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 626 [2022-11-23 03:08:45,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:08:45,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:08:45,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:08:45,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:08:45,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:45" (1/1) ... [2022-11-23 03:08:45,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:45" (1/1) ... [2022-11-23 03:08:45,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:45" (1/1) ... [2022-11-23 03:08:45,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:45" (1/1) ... [2022-11-23 03:08:45,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:45" (1/1) ... [2022-11-23 03:08:45,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:45" (1/1) ... [2022-11-23 03:08:45,170 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:45" (1/1) ... [2022-11-23 03:08:45,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:45" (1/1) ... [2022-11-23 03:08:45,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:08:45,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:08:45,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:08:45,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:08:45,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:45" (1/1) ... [2022-11-23 03:08:45,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:08:45,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:08:45,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:08:45,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc4a3a8-f102-42ce-9871-5e48c2f81431/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:08:45,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:08:45,293 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-23 03:08:45,294 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-23 03:08:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-23 03:08:45,294 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-23 03:08:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-23 03:08:45,294 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-23 03:08:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-23 03:08:45,295 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-23 03:08:45,295 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-23 03:08:45,296 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-23 03:08:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-23 03:08:45,296 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-23 03:08:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:08:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-23 03:08:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-23 03:08:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:08:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:08:45,468 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:08:45,470 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:08:46,434 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:08:46,448 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:08:46,456 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-23 03:08:46,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:46 BoogieIcfgContainer [2022-11-23 03:08:46,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:08:46,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:08:46,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:08:46,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:08:46,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:08:44" (1/3) ... [2022-11-23 03:08:46,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724d7c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:08:46, skipping insertion in model container [2022-11-23 03:08:46,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:45" (2/3) ... [2022-11-23 03:08:46,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724d7c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:08:46, skipping insertion in model container [2022-11-23 03:08:46,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:46" (3/3) ... [2022-11-23 03:08:46,470 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.08.cil-2.c [2022-11-23 03:08:46,491 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:08:46,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:08:46,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:08:46,579 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;@11a365c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:08:46,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:08:46,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 290 states, 257 states have (on average 1.6536964980544746) internal successors, (425), 261 states have internal predecessors, (425), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-23 03:08:46,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 03:08:46,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:46,601 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] [2022-11-23 03:08:46,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:46,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:46,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1719211472, now seen corresponding path program 1 times [2022-11-23 03:08:46,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:46,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412831046] [2022-11-23 03:08:46,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:46,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:47,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:08:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:47,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:08:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:47,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 03:08:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:47,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 03:08:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:47,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 03:08:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:47,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:47,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412831046] [2022-11-23 03:08:47,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412831046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:08:47,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:08:47,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:08:47,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650377148] [2022-11-23 03:08:47,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:08:47,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:08:47,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:08:47,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:08:47,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:08:47,297 INFO L87 Difference]: Start difference. First operand has 290 states, 257 states have (on average 1.6536964980544746) internal successors, (425), 261 states have internal predecessors, (425), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:08:49,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:08:49,235 INFO L93 Difference]: Finished difference Result 666 states and 1098 transitions. [2022-11-23 03:08:49,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:08:49,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 03:08:49,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:08:49,253 INFO L225 Difference]: With dead ends: 666 [2022-11-23 03:08:49,253 INFO L226 Difference]: Without dead ends: 382 [2022-11-23 03:08:49,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 03:08:49,263 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 748 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:08:49,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 581 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 03:08:49,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-23 03:08:49,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 284. [2022-11-23 03:08:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 253 states have (on average 1.565217391304348) internal successors, (396), 255 states have internal predecessors, (396), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-23 03:08:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 442 transitions. [2022-11-23 03:08:49,383 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 442 transitions. Word has length 134 [2022-11-23 03:08:49,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:08:49,384 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 442 transitions. [2022-11-23 03:08:49,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:08:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 442 transitions. [2022-11-23 03:08:49,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 03:08:49,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:49,396 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] [2022-11-23 03:08:49,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:08:49,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:49,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:49,398 INFO L85 PathProgramCache]: Analyzing trace with hash 857377870, now seen corresponding path program 1 times [2022-11-23 03:08:49,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:49,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939878395] [2022-11-23 03:08:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:49,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:49,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:08:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:49,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:08:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:49,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 03:08:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 03:08:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:49,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 03:08:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:49,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:49,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939878395] [2022-11-23 03:08:49,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939878395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:08:49,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:08:49,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 03:08:49,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231678495] [2022-11-23 03:08:49,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:08:49,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:08:49,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:08:49,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:08:49,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:08:49,818 INFO L87 Difference]: Start difference. First operand 284 states and 442 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:08:52,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:08:52,746 INFO L93 Difference]: Finished difference Result 1026 states and 1633 transitions. [2022-11-23 03:08:52,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 03:08:52,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 03:08:52,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:08:52,752 INFO L225 Difference]: With dead ends: 1026 [2022-11-23 03:08:52,753 INFO L226 Difference]: Without dead ends: 758 [2022-11-23 03:08:52,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:08:52,757 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1117 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:08:52,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 1001 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-23 03:08:52,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-11-23 03:08:52,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 561. [2022-11-23 03:08:52,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 506 states have (on average 1.5770750988142292) internal successors, (798), 509 states have internal predecessors, (798), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-11-23 03:08:52,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 881 transitions. [2022-11-23 03:08:52,839 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 881 transitions. Word has length 134 [2022-11-23 03:08:52,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:08:52,839 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 881 transitions. [2022-11-23 03:08:52,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:08:52,840 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 881 transitions. [2022-11-23 03:08:52,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 03:08:52,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:52,843 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] [2022-11-23 03:08:52,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:08:52,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:52,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:52,844 INFO L85 PathProgramCache]: Analyzing trace with hash -504624566, now seen corresponding path program 1 times [2022-11-23 03:08:52,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:52,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945285389] [2022-11-23 03:08:52,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:52,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:53,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:08:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:53,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:08:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:53,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 03:08:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:53,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 03:08:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 03:08:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:53,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:53,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945285389] [2022-11-23 03:08:53,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945285389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:08:53,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:08:53,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:08:53,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134895548] [2022-11-23 03:08:53,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:08:53,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:08:53,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:08:53,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:08:53,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:08:53,269 INFO L87 Difference]: Start difference. First operand 561 states and 881 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:08:56,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:08:56,801 INFO L93 Difference]: Finished difference Result 1689 states and 2691 transitions. [2022-11-23 03:08:56,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:08:56,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 03:08:56,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:08:56,811 INFO L225 Difference]: With dead ends: 1689 [2022-11-23 03:08:56,812 INFO L226 Difference]: Without dead ends: 1144 [2022-11-23 03:08:56,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:08:56,821 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 1134 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 03:08:56,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 1872 Invalid, 2605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2546 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 03:08:56,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2022-11-23 03:08:56,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 819. [2022-11-23 03:08:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 740 states have (on average 1.5702702702702702) internal successors, (1162), 744 states have internal predecessors, (1162), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-11-23 03:08:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1281 transitions. [2022-11-23 03:08:56,932 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1281 transitions. Word has length 134 [2022-11-23 03:08:56,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:08:56,933 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1281 transitions. [2022-11-23 03:08:56,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:08:56,933 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1281 transitions. [2022-11-23 03:08:56,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 03:08:56,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:56,935 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] [2022-11-23 03:08:56,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:08:56,936 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1424307660, now seen corresponding path program 1 times [2022-11-23 03:08:56,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:56,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463285283] [2022-11-23 03:08:56,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:56,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:57,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:08:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:57,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:08:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:57,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 03:08:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:57,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 03:08:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:57,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 03:08:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:57,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:57,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463285283] [2022-11-23 03:08:57,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463285283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:08:57,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:08:57,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:08:57,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129206328] [2022-11-23 03:08:57,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:08:57,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:08:57,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:08:57,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:08:57,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:08:57,269 INFO L87 Difference]: Start difference. First operand 819 states and 1281 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:09:00,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:00,464 INFO L93 Difference]: Finished difference Result 2666 states and 4239 transitions. [2022-11-23 03:09:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:09:00,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 03:09:00,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:00,477 INFO L225 Difference]: With dead ends: 2666 [2022-11-23 03:09:00,477 INFO L226 Difference]: Without dead ends: 1863 [2022-11-23 03:09:00,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:09:00,480 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 1216 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:00,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 1229 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 03:09:00,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2022-11-23 03:09:00,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1336. [2022-11-23 03:09:00,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1209 states have (on average 1.564102564102564) internal successors, (1891), 1215 states have internal predecessors, (1891), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-11-23 03:09:00,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 2086 transitions. [2022-11-23 03:09:00,625 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 2086 transitions. Word has length 134 [2022-11-23 03:09:00,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:00,625 INFO L495 AbstractCegarLoop]: Abstraction has 1336 states and 2086 transitions. [2022-11-23 03:09:00,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:09:00,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 2086 transitions. [2022-11-23 03:09:00,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 03:09:00,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:00,629 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] [2022-11-23 03:09:00,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:09:00,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:00,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:00,630 INFO L85 PathProgramCache]: Analyzing trace with hash -868773366, now seen corresponding path program 1 times [2022-11-23 03:09:00,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:00,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976067458] [2022-11-23 03:09:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:00,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:00,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:09:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:00,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:09:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:00,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 03:09:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:00,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 03:09:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:00,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 03:09:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:00,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:00,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976067458] [2022-11-23 03:09:00,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976067458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:00,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:00,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:09:00,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102424052] [2022-11-23 03:09:00,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:00,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:09:00,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:09:00,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:00,875 INFO L87 Difference]: Start difference. First operand 1336 states and 2086 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:09:04,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:04,314 INFO L93 Difference]: Finished difference Result 4547 states and 7204 transitions. [2022-11-23 03:09:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:09:04,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 03:09:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:04,331 INFO L225 Difference]: With dead ends: 4547 [2022-11-23 03:09:04,332 INFO L226 Difference]: Without dead ends: 3227 [2022-11-23 03:09:04,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:09:04,337 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1126 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2540 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 2601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:04,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 1870 Invalid, 2601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2540 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 03:09:04,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2022-11-23 03:09:04,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2371. [2022-11-23 03:09:04,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2148 states have (on average 1.559124767225326) internal successors, (3349), 2158 states have internal predecessors, (3349), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-11-23 03:09:04,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3702 transitions. [2022-11-23 03:09:04,648 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3702 transitions. Word has length 134 [2022-11-23 03:09:04,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:04,648 INFO L495 AbstractCegarLoop]: Abstraction has 2371 states and 3702 transitions. [2022-11-23 03:09:04,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:09:04,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3702 transitions. [2022-11-23 03:09:04,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 03:09:04,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:04,651 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] [2022-11-23 03:09:04,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:09:04,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:04,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:04,652 INFO L85 PathProgramCache]: Analyzing trace with hash 858371596, now seen corresponding path program 1 times [2022-11-23 03:09:04,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:04,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470186257] [2022-11-23 03:09:04,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:04,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:04,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:09:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:04,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:09:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:04,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 03:09:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:04,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 03:09:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:04,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 03:09:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:04,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:04,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470186257] [2022-11-23 03:09:04,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470186257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:04,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:04,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:09:04,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416913309] [2022-11-23 03:09:04,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:04,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:09:04,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:04,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:09:04,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:04,907 INFO L87 Difference]: Start difference. First operand 2371 states and 3702 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:09:08,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:08,668 INFO L93 Difference]: Finished difference Result 8308 states and 13150 transitions. [2022-11-23 03:09:08,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:09:08,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 03:09:08,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:08,695 INFO L225 Difference]: With dead ends: 8308 [2022-11-23 03:09:08,695 INFO L226 Difference]: Without dead ends: 5953 [2022-11-23 03:09:08,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:09:08,704 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1122 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 2592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:08,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 1870 Invalid, 2592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 03:09:08,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5953 states. [2022-11-23 03:09:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5953 to 4446. [2022-11-23 03:09:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4031 states have (on average 1.555693376333416) internal successors, (6271), 4049 states have internal predecessors, (6271), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-11-23 03:09:09,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 6958 transitions. [2022-11-23 03:09:09,271 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 6958 transitions. Word has length 134 [2022-11-23 03:09:09,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:09,271 INFO L495 AbstractCegarLoop]: Abstraction has 4446 states and 6958 transitions. [2022-11-23 03:09:09,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:09:09,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 6958 transitions. [2022-11-23 03:09:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 03:09:09,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:09,276 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] [2022-11-23 03:09:09,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:09:09,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:09,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:09,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1329727946, now seen corresponding path program 1 times [2022-11-23 03:09:09,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:09,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211725944] [2022-11-23 03:09:09,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:09,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:09,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:09:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:09:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:09,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 03:09:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:09,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 03:09:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:09,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 03:09:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:09,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:09,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211725944] [2022-11-23 03:09:09,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211725944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:09,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:09,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:09:09,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733517217] [2022-11-23 03:09:09,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:09,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:09:09,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:09,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:09:09,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:09,510 INFO L87 Difference]: Start difference. First operand 4446 states and 6958 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:09:13,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:13,666 INFO L93 Difference]: Finished difference Result 15829 states and 25100 transitions. [2022-11-23 03:09:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:09:13,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 03:09:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:13,721 INFO L225 Difference]: With dead ends: 15829 [2022-11-23 03:09:13,721 INFO L226 Difference]: Without dead ends: 11399 [2022-11-23 03:09:13,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:09:13,738 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1118 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:13,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 1870 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 03:09:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11399 states. [2022-11-23 03:09:15,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11399 to 8609. [2022-11-23 03:09:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8609 states, 7810 states have (on average 1.5535211267605633) internal successors, (12133), 7844 states have internal predecessors, (12133), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-11-23 03:09:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8609 states to 8609 states and 13542 transitions. [2022-11-23 03:09:15,076 INFO L78 Accepts]: Start accepts. Automaton has 8609 states and 13542 transitions. Word has length 134 [2022-11-23 03:09:15,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:15,077 INFO L495 AbstractCegarLoop]: Abstraction has 8609 states and 13542 transitions. [2022-11-23 03:09:15,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:09:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 8609 states and 13542 transitions. [2022-11-23 03:09:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 03:09:15,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:15,088 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] [2022-11-23 03:09:15,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:09:15,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:15,089 INFO L85 PathProgramCache]: Analyzing trace with hash -317634996, now seen corresponding path program 1 times [2022-11-23 03:09:15,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:15,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471096569] [2022-11-23 03:09:15,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:15,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:15,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:09:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:09:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:15,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 03:09:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 03:09:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:15,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 03:09:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:15,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:15,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471096569] [2022-11-23 03:09:15,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471096569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:15,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:15,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:09:15,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717977975] [2022-11-23 03:09:15,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:15,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:09:15,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:15,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:09:15,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:15,424 INFO L87 Difference]: Start difference. First operand 8609 states and 13542 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:09:20,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:20,878 INFO L93 Difference]: Finished difference Result 30870 states and 49190 transitions. [2022-11-23 03:09:20,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:09:20,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 03:09:20,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:20,990 INFO L225 Difference]: With dead ends: 30870 [2022-11-23 03:09:20,990 INFO L226 Difference]: Without dead ends: 22277 [2022-11-23 03:09:21,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:09:21,025 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1120 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 2569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:21,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 1870 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 03:09:21,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22277 states. [2022-11-23 03:09:23,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22277 to 16964. [2022-11-23 03:09:23,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16964 states, 15397 states have (on average 1.5521854906800026) internal successors, (23899), 15463 states have internal predecessors, (23899), 1112 states have call successors, (1112), 391 states have call predecessors, (1112), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2022-11-23 03:09:23,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16964 states to 16964 states and 26914 transitions. [2022-11-23 03:09:23,109 INFO L78 Accepts]: Start accepts. Automaton has 16964 states and 26914 transitions. Word has length 134 [2022-11-23 03:09:23,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:23,109 INFO L495 AbstractCegarLoop]: Abstraction has 16964 states and 26914 transitions. [2022-11-23 03:09:23,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:09:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand 16964 states and 26914 transitions. [2022-11-23 03:09:23,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 03:09:23,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:23,126 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] [2022-11-23 03:09:23,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:09:23,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:23,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:23,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1845981578, now seen corresponding path program 1 times [2022-11-23 03:09:23,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:23,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492770530] [2022-11-23 03:09:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:23,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:23,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:09:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:23,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:09:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:23,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 03:09:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:23,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 03:09:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:23,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 03:09:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:23,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:23,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492770530] [2022-11-23 03:09:23,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492770530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:23,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:23,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:09:23,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767178585] [2022-11-23 03:09:23,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:23,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:09:23,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:23,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:09:23,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:23,400 INFO L87 Difference]: Start difference. First operand 16964 states and 26914 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:09:31,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:31,806 INFO L93 Difference]: Finished difference Result 60888 states and 97844 transitions. [2022-11-23 03:09:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:09:31,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 03:09:31,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:32,051 INFO L225 Difference]: With dead ends: 60888 [2022-11-23 03:09:32,052 INFO L226 Difference]: Without dead ends: 43940 [2022-11-23 03:09:32,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:09:32,133 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1116 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:32,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 1870 Invalid, 2541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 03:09:32,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43940 states. [2022-11-23 03:09:36,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43940 to 33800. [2022-11-23 03:09:36,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33800 states, 30697 states have (on average 1.5523015278365964) internal successors, (47651), 30827 states have internal predecessors, (47651), 2200 states have call successors, (2200), 775 states have call predecessors, (2200), 902 states have return successors, (4513), 2325 states have call predecessors, (4513), 2198 states have call successors, (4513) [2022-11-23 03:09:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33800 states to 33800 states and 54364 transitions. [2022-11-23 03:09:36,776 INFO L78 Accepts]: Start accepts. Automaton has 33800 states and 54364 transitions. Word has length 134 [2022-11-23 03:09:36,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:36,777 INFO L495 AbstractCegarLoop]: Abstraction has 33800 states and 54364 transitions. [2022-11-23 03:09:36,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:09:36,777 INFO L276 IsEmpty]: Start isEmpty. Operand 33800 states and 54364 transitions. [2022-11-23 03:09:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 03:09:36,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:36,800 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] [2022-11-23 03:09:36,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:09:36,800 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:36,801 INFO L85 PathProgramCache]: Analyzing trace with hash -127183800, now seen corresponding path program 1 times [2022-11-23 03:09:36,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:36,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213845349] [2022-11-23 03:09:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:36,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:36,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:09:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:36,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:09:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:37,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 03:09:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:37,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 03:09:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:37,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 03:09:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:37,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:37,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213845349] [2022-11-23 03:09:37,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213845349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:09:37,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:09:37,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:09:37,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839564535] [2022-11-23 03:09:37,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:09:37,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:09:37,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:37,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:09:37,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:09:37,034 INFO L87 Difference]: Start difference. First operand 33800 states and 54364 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:09:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:54,071 INFO L93 Difference]: Finished difference Result 136542 states and 220810 transitions. [2022-11-23 03:09:54,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 03:09:54,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 03:09:54,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:54,694 INFO L225 Difference]: With dead ends: 136542 [2022-11-23 03:09:54,694 INFO L226 Difference]: Without dead ends: 102758 [2022-11-23 03:09:54,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:09:54,850 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1445 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:54,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 1860 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-23 03:09:54,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102758 states. [2022-11-23 03:10:03,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102758 to 67213. [2022-11-23 03:10:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67213 states, 61166 states have (on average 1.554540103979335) internal successors, (95085), 61424 states have internal predecessors, (95085), 4248 states have call successors, (4248), 1543 states have call predecessors, (4248), 1798 states have return successors, (11063), 4501 states have call predecessors, (11063), 4246 states have call successors, (11063) [2022-11-23 03:10:03,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67213 states to 67213 states and 110396 transitions. [2022-11-23 03:10:03,499 INFO L78 Accepts]: Start accepts. Automaton has 67213 states and 110396 transitions. Word has length 134 [2022-11-23 03:10:03,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:10:03,500 INFO L495 AbstractCegarLoop]: Abstraction has 67213 states and 110396 transitions. [2022-11-23 03:10:03,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:10:03,500 INFO L276 IsEmpty]: Start isEmpty. Operand 67213 states and 110396 transitions. [2022-11-23 03:10:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 03:10:03,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:10:03,546 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] [2022-11-23 03:10:03,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:10:03,546 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:10:03,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:10:03,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2025923018, now seen corresponding path program 1 times [2022-11-23 03:10:03,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:10:03,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557713882] [2022-11-23 03:10:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:10:03,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:10:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:10:03,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 03:10:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:10:03,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 03:10:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:10:03,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 03:10:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:10:03,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 03:10:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:10:03,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 03:10:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:10:03,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:10:03,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:10:03,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557713882] [2022-11-23 03:10:03,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557713882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:10:03,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:10:03,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:10:03,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269207320] [2022-11-23 03:10:03,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:10:03,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:10:03,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:10:03,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:10:03,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:10:03,773 INFO L87 Difference]: Start difference. First operand 67213 states and 110396 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)