./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fee2fbeec3a60e447cd74345d2f8a46dc28fcea89eab2880c2a2ccd5802bfaa0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 04:03:12,071 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 04:03:12,152 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 04:03:12,159 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 04:03:12,161 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 04:03:12,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 04:03:12,187 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 04:03:12,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 04:03:12,188 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 04:03:12,188 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 04:03:12,192 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 04:03:12,192 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 04:03:12,193 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 04:03:12,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 04:03:12,193 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 04:03:12,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 04:03:12,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 04:03:12,194 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 04:03:12,194 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 04:03:12,196 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 04:03:12,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 04:03:12,199 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 04:03:12,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 04:03:12,199 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 04:03:12,200 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 04:03:12,200 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 04:03:12,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 04:03:12,200 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 04:03:12,200 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 04:03:12,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 04:03:12,200 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 04:03:12,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 04:03:12,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:03:12,201 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 04:03:12,201 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 04:03:12,201 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 04:03:12,201 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 04:03:12,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 04:03:12,202 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 04:03:12,202 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 04:03:12,202 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 04:03:12,204 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 04:03:12,204 INFO L153 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fee2fbeec3a60e447cd74345d2f8a46dc28fcea89eab2880c2a2ccd5802bfaa0 [2024-11-22 04:03:12,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 04:03:12,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 04:03:12,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 04:03:12,612 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 04:03:12,612 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 04:03:12,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c [2024-11-22 04:03:14,351 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 04:03:14,597 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 04:03:14,597 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c [2024-11-22 04:03:14,621 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c9e315b0/f24a3eba5770473a81dc362c37db9bbd/FLAGb2e659bdd [2024-11-22 04:03:14,657 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c9e315b0/f24a3eba5770473a81dc362c37db9bbd [2024-11-22 04:03:14,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 04:03:14,664 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 04:03:14,666 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 04:03:14,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 04:03:14,679 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 04:03:14,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:03:14" (1/1) ... [2024-11-22 04:03:14,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1fd025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:14, skipping insertion in model container [2024-11-22 04:03:14,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:03:14" (1/1) ... [2024-11-22 04:03:14,751 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 04:03:15,045 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[913,926] [2024-11-22 04:03:15,144 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[5977,5990] [2024-11-22 04:03:15,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:03:15,357 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 04:03:15,380 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[913,926] [2024-11-22 04:03:15,402 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[5977,5990] [2024-11-22 04:03:15,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:03:15,515 INFO L204 MainTranslator]: Completed translation [2024-11-22 04:03:15,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:15 WrapperNode [2024-11-22 04:03:15,519 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 04:03:15,519 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 04:03:15,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 04:03:15,523 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 04:03:15,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:15" (1/1) ... [2024-11-22 04:03:15,557 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:15" (1/1) ... [2024-11-22 04:03:15,644 INFO L138 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 723 [2024-11-22 04:03:15,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 04:03:15,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 04:03:15,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 04:03:15,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 04:03:15,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:15" (1/1) ... [2024-11-22 04:03:15,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:15" (1/1) ... [2024-11-22 04:03:15,672 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:15" (1/1) ... [2024-11-22 04:03:15,709 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 04:03:15,709 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:15" (1/1) ... [2024-11-22 04:03:15,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:15" (1/1) ... [2024-11-22 04:03:15,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:15" (1/1) ... [2024-11-22 04:03:15,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:15" (1/1) ... [2024-11-22 04:03:15,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:15" (1/1) ... [2024-11-22 04:03:15,759 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:15" (1/1) ... [2024-11-22 04:03:15,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 04:03:15,776 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 04:03:15,776 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 04:03:15,776 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 04:03:15,777 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:15" (1/1) ... [2024-11-22 04:03:15,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:03:15,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:15,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 04:03:15,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 04:03:15,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 04:03:15,900 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-22 04:03:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-22 04:03:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-22 04:03:15,902 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-22 04:03:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-22 04:03:15,903 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-22 04:03:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-22 04:03:15,903 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-22 04:03:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-22 04:03:15,903 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-22 04:03:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-22 04:03:15,905 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-22 04:03:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-22 04:03:15,907 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-22 04:03:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 04:03:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-22 04:03:15,907 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-22 04:03:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 04:03:15,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 04:03:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-22 04:03:15,908 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-22 04:03:16,014 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 04:03:16,017 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 04:03:16,689 INFO L? ?]: Removed 91 outVars from TransFormulas that were not future-live. [2024-11-22 04:03:16,690 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 04:03:16,720 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 04:03:16,721 INFO L316 CfgBuilder]: Removed 13 assume(true) statements. [2024-11-22 04:03:16,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:03:16 BoogieIcfgContainer [2024-11-22 04:03:16,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 04:03:16,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 04:03:16,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 04:03:16,731 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 04:03:16,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:03:14" (1/3) ... [2024-11-22 04:03:16,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106ebd36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:03:16, skipping insertion in model container [2024-11-22 04:03:16,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:15" (2/3) ... [2024-11-22 04:03:16,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106ebd36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:03:16, skipping insertion in model container [2024-11-22 04:03:16,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:03:16" (3/3) ... [2024-11-22 04:03:16,734 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.06.cil-2.c [2024-11-22 04:03:16,751 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 04:03:16,751 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 04:03:16,836 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 04:03:16,842 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b703275, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 04:03:16,843 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 04:03:16,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 311 states, 273 states have (on average 1.6007326007326008) internal successors, (437), 278 states have internal predecessors, (437), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-22 04:03:16,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-22 04:03:16,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:16,866 INFO L215 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] [2024-11-22 04:03:16,868 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:16,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:16,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1020117344, now seen corresponding path program 1 times [2024-11-22 04:03:16,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:16,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321340546] [2024-11-22 04:03:16,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:16,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:17,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:17,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321340546] [2024-11-22 04:03:17,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321340546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:17,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:17,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:17,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440883273] [2024-11-22 04:03:17,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:17,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:17,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:17,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:17,256 INFO L87 Difference]: Start difference. First operand has 311 states, 273 states have (on average 1.6007326007326008) internal successors, (437), 278 states have internal predecessors, (437), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 04:03:17,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:17,361 INFO L93 Difference]: Finished difference Result 662 states and 1042 transitions. [2024-11-22 04:03:17,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:17,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-22 04:03:17,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:17,376 INFO L225 Difference]: With dead ends: 662 [2024-11-22 04:03:17,376 INFO L226 Difference]: Without dead ends: 360 [2024-11-22 04:03:17,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:17,385 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 436 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:17,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 557 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:17,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-22 04:03:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 356. [2024-11-22 04:03:17,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 314 states have (on average 1.480891719745223) internal successors, (465), 317 states have internal predecessors, (465), 30 states have call successors, (30), 11 states have call predecessors, (30), 10 states have return successors, (32), 28 states have call predecessors, (32), 28 states have call successors, (32) [2024-11-22 04:03:17,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 527 transitions. [2024-11-22 04:03:17,533 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 527 transitions. Word has length 44 [2024-11-22 04:03:17,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:17,533 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 527 transitions. [2024-11-22 04:03:17,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 04:03:17,534 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 527 transitions. [2024-11-22 04:03:17,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-22 04:03:17,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:17,543 INFO L215 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] [2024-11-22 04:03:17,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 04:03:17,543 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:17,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:17,544 INFO L85 PathProgramCache]: Analyzing trace with hash -300926777, now seen corresponding path program 1 times [2024-11-22 04:03:17,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:17,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727337509] [2024-11-22 04:03:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:17,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:17,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:17,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727337509] [2024-11-22 04:03:17,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727337509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:17,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:17,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:17,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973087322] [2024-11-22 04:03:17,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:17,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:17,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:17,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:17,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:17,700 INFO L87 Difference]: Start difference. First operand 356 states and 527 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 04:03:17,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:17,775 INFO L93 Difference]: Finished difference Result 564 states and 815 transitions. [2024-11-22 04:03:17,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:17,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-22 04:03:17,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:17,782 INFO L225 Difference]: With dead ends: 564 [2024-11-22 04:03:17,782 INFO L226 Difference]: Without dead ends: 449 [2024-11-22 04:03:17,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:17,792 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 67 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:17,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 899 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:17,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-11-22 04:03:17,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 423. [2024-11-22 04:03:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 375 states have (on average 1.464) internal successors, (549), 378 states have internal predecessors, (549), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (36), 31 states have call predecessors, (36), 31 states have call successors, (36) [2024-11-22 04:03:17,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 618 transitions. [2024-11-22 04:03:17,852 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 618 transitions. Word has length 45 [2024-11-22 04:03:17,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:17,852 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 618 transitions. [2024-11-22 04:03:17,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 04:03:17,852 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 618 transitions. [2024-11-22 04:03:17,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-22 04:03:17,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:17,854 INFO L215 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] [2024-11-22 04:03:17,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 04:03:17,855 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:17,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1585284238, now seen corresponding path program 1 times [2024-11-22 04:03:17,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:17,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964014209] [2024-11-22 04:03:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:17,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:17,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:17,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964014209] [2024-11-22 04:03:17,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964014209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:17,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:17,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:17,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264204843] [2024-11-22 04:03:17,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:17,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:17,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:17,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:17,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:17,918 INFO L87 Difference]: Start difference. First operand 423 states and 618 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 04:03:17,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:17,952 INFO L93 Difference]: Finished difference Result 776 states and 1106 transitions. [2024-11-22 04:03:17,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:17,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-22 04:03:17,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:17,956 INFO L225 Difference]: With dead ends: 776 [2024-11-22 04:03:17,956 INFO L226 Difference]: Without dead ends: 594 [2024-11-22 04:03:17,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:17,958 INFO L432 NwaCegarLoop]: 458 mSDtfsCounter, 424 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:17,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 536 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:17,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-22 04:03:17,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 580. [2024-11-22 04:03:17,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 514 states have (on average 1.4221789883268483) internal successors, (731), 519 states have internal predecessors, (731), 44 states have call successors, (44), 21 states have call predecessors, (44), 20 states have return successors, (52), 40 states have call predecessors, (52), 42 states have call successors, (52) [2024-11-22 04:03:17,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 827 transitions. [2024-11-22 04:03:17,987 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 827 transitions. Word has length 45 [2024-11-22 04:03:17,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:17,988 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 827 transitions. [2024-11-22 04:03:17,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 04:03:17,988 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 827 transitions. [2024-11-22 04:03:17,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-22 04:03:17,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:17,991 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:03:17,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 04:03:17,991 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:17,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:17,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2108015824, now seen corresponding path program 1 times [2024-11-22 04:03:17,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:17,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641990199] [2024-11-22 04:03:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:17,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 04:03:18,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641990199] [2024-11-22 04:03:18,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641990199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:18,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:18,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:18,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703215173] [2024-11-22 04:03:18,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:18,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:18,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:18,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:18,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:18,105 INFO L87 Difference]: Start difference. First operand 580 states and 827 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 04:03:18,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:18,194 INFO L93 Difference]: Finished difference Result 1092 states and 1524 transitions. [2024-11-22 04:03:18,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:18,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2024-11-22 04:03:18,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:18,201 INFO L225 Difference]: With dead ends: 1092 [2024-11-22 04:03:18,201 INFO L226 Difference]: Without dead ends: 753 [2024-11-22 04:03:18,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:18,203 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 55 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:18,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 946 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-11-22 04:03:18,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2024-11-22 04:03:18,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 665 states have (on average 1.3714285714285714) internal successors, (912), 670 states have internal predecessors, (912), 58 states have call successors, (58), 29 states have call predecessors, (58), 28 states have return successors, (74), 54 states have call predecessors, (74), 56 states have call successors, (74) [2024-11-22 04:03:18,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1044 transitions. [2024-11-22 04:03:18,246 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1044 transitions. Word has length 62 [2024-11-22 04:03:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:18,247 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 1044 transitions. [2024-11-22 04:03:18,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 04:03:18,247 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1044 transitions. [2024-11-22 04:03:18,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 04:03:18,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:18,249 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:03:18,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 04:03:18,250 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:18,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:18,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1042963189, now seen corresponding path program 1 times [2024-11-22 04:03:18,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:18,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327085016] [2024-11-22 04:03:18,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:18,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:18,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-22 04:03:18,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:18,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327085016] [2024-11-22 04:03:18,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327085016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:18,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:18,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:18,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256469945] [2024-11-22 04:03:18,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:18,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:18,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:18,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:18,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:18,292 INFO L87 Difference]: Start difference. First operand 753 states and 1044 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 04:03:18,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:18,340 INFO L93 Difference]: Finished difference Result 1300 states and 1765 transitions. [2024-11-22 04:03:18,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:18,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2024-11-22 04:03:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:18,346 INFO L225 Difference]: With dead ends: 1300 [2024-11-22 04:03:18,346 INFO L226 Difference]: Without dead ends: 880 [2024-11-22 04:03:18,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:18,349 INFO L432 NwaCegarLoop]: 454 mSDtfsCounter, 411 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:18,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 532 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:18,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2024-11-22 04:03:18,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2024-11-22 04:03:18,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 778 states have (on average 1.3419023136246786) internal successors, (1044), 783 states have internal predecessors, (1044), 66 states have call successors, (66), 35 states have call predecessors, (66), 34 states have return successors, (86), 62 states have call predecessors, (86), 64 states have call successors, (86) [2024-11-22 04:03:18,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1196 transitions. [2024-11-22 04:03:18,389 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1196 transitions. Word has length 67 [2024-11-22 04:03:18,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:18,389 INFO L471 AbstractCegarLoop]: Abstraction has 880 states and 1196 transitions. [2024-11-22 04:03:18,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 04:03:18,389 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1196 transitions. [2024-11-22 04:03:18,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 04:03:18,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:18,392 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:03:18,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 04:03:18,392 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:18,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:18,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2053976574, now seen corresponding path program 1 times [2024-11-22 04:03:18,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:18,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037088951] [2024-11-22 04:03:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:18,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 04:03:18,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:18,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037088951] [2024-11-22 04:03:18,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037088951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:18,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325439196] [2024-11-22 04:03:18,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:18,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:03:18,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:18,535 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 04:03:18,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 04:03:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:18,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 04:03:18,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:03:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:18,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 04:03:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 04:03:18,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325439196] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:18,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 04:03:18,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2024-11-22 04:03:18,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981037038] [2024-11-22 04:03:18,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:18,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:03:18,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:18,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:03:18,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 04:03:18,960 INFO L87 Difference]: Start difference. First operand 880 states and 1196 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 04:03:19,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:19,181 INFO L93 Difference]: Finished difference Result 936 states and 1264 transitions. [2024-11-22 04:03:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:03:19,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2024-11-22 04:03:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:19,186 INFO L225 Difference]: With dead ends: 936 [2024-11-22 04:03:19,187 INFO L226 Difference]: Without dead ends: 933 [2024-11-22 04:03:19,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 04:03:19,188 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 805 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:19,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 540 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:03:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2024-11-22 04:03:19,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 879. [2024-11-22 04:03:19,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 778 states have (on average 1.339331619537275) internal successors, (1042), 782 states have internal predecessors, (1042), 65 states have call successors, (65), 35 states have call predecessors, (65), 34 states have return successors, (86), 62 states have call predecessors, (86), 64 states have call successors, (86) [2024-11-22 04:03:19,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1193 transitions. [2024-11-22 04:03:19,236 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1193 transitions. Word has length 68 [2024-11-22 04:03:19,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:19,236 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1193 transitions. [2024-11-22 04:03:19,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 04:03:19,237 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1193 transitions. [2024-11-22 04:03:19,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-22 04:03:19,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:19,239 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:03:19,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 04:03:19,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-22 04:03:19,440 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:19,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash 750276014, now seen corresponding path program 1 times [2024-11-22 04:03:19,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:19,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549312394] [2024-11-22 04:03:19,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:19,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:19,520 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 04:03:19,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:19,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549312394] [2024-11-22 04:03:19,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549312394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:19,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982918452] [2024-11-22 04:03:19,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:19,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:03:19,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:19,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 04:03:19,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 04:03:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:19,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 04:03:19,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:03:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:19,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 04:03:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 04:03:20,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982918452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 04:03:20,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 04:03:20,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-22 04:03:20,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815071290] [2024-11-22 04:03:20,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 04:03:20,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 04:03:20,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:20,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 04:03:20,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-22 04:03:20,110 INFO L87 Difference]: Start difference. First operand 879 states and 1193 transitions. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-22 04:03:20,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:20,402 INFO L93 Difference]: Finished difference Result 2223 states and 2977 transitions. [2024-11-22 04:03:20,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 04:03:20,403 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2024-11-22 04:03:20,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:20,409 INFO L225 Difference]: With dead ends: 2223 [2024-11-22 04:03:20,409 INFO L226 Difference]: Without dead ends: 1730 [2024-11-22 04:03:20,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2024-11-22 04:03:20,411 INFO L432 NwaCegarLoop]: 538 mSDtfsCounter, 626 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:20,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 3303 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 04:03:20,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2024-11-22 04:03:20,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1236. [2024-11-22 04:03:20,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1099 states have (on average 1.3093721565059144) internal successors, (1439), 1108 states have internal predecessors, (1439), 85 states have call successors, (85), 49 states have call predecessors, (85), 50 states have return successors, (117), 79 states have call predecessors, (117), 84 states have call successors, (117) [2024-11-22 04:03:20,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1641 transitions. [2024-11-22 04:03:20,464 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1641 transitions. Word has length 69 [2024-11-22 04:03:20,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:20,465 INFO L471 AbstractCegarLoop]: Abstraction has 1236 states and 1641 transitions. [2024-11-22 04:03:20,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-22 04:03:20,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1641 transitions. [2024-11-22 04:03:20,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-22 04:03:20,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:20,467 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:03:20,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 04:03:20,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-22 04:03:20,668 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:20,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1614104128, now seen corresponding path program 1 times [2024-11-22 04:03:20,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676410806] [2024-11-22 04:03:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:20,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:20,769 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-22 04:03:20,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:20,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676410806] [2024-11-22 04:03:20,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676410806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:20,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538626004] [2024-11-22 04:03:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:20,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:03:20,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:20,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 04:03:20,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 04:03:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:20,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 04:03:20,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:03:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 04:03:20,893 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 04:03:20,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538626004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:20,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 04:03:20,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-22 04:03:20,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478960520] [2024-11-22 04:03:20,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:20,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:20,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:20,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:20,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:20,902 INFO L87 Difference]: Start difference. First operand 1236 states and 1641 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 04:03:20,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:20,978 INFO L93 Difference]: Finished difference Result 1882 states and 2482 transitions. [2024-11-22 04:03:20,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:20,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2024-11-22 04:03:20,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:20,989 INFO L225 Difference]: With dead ends: 1882 [2024-11-22 04:03:20,989 INFO L226 Difference]: Without dead ends: 1118 [2024-11-22 04:03:20,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:20,994 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 409 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:20,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 554 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:20,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2024-11-22 04:03:21,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1103. [2024-11-22 04:03:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 980 states have (on average 1.3091836734693878) internal successors, (1283), 990 states have internal predecessors, (1283), 77 states have call successors, (77), 43 states have call predecessors, (77), 44 states have return successors, (105), 70 states have call predecessors, (105), 76 states have call successors, (105) [2024-11-22 04:03:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1465 transitions. [2024-11-22 04:03:21,146 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1465 transitions. Word has length 88 [2024-11-22 04:03:21,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:21,146 INFO L471 AbstractCegarLoop]: Abstraction has 1103 states and 1465 transitions. [2024-11-22 04:03:21,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 04:03:21,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1465 transitions. [2024-11-22 04:03:21,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-22 04:03:21,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:21,173 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:03:21,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 04:03:21,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:03:21,375 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:21,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:21,377 INFO L85 PathProgramCache]: Analyzing trace with hash -999731169, now seen corresponding path program 1 times [2024-11-22 04:03:21,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:21,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090596074] [2024-11-22 04:03:21,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:21,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-22 04:03:21,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:21,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090596074] [2024-11-22 04:03:21,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090596074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:03:21,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98710889] [2024-11-22 04:03:21,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:21,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:03:21,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:03:21,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 04:03:21,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 04:03:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:21,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 04:03:21,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:03:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 04:03:21,661 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 04:03:21,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98710889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:21,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 04:03:21,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-22 04:03:21,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522800829] [2024-11-22 04:03:21,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:21,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:21,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:21,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:21,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:21,663 INFO L87 Difference]: Start difference. First operand 1103 states and 1465 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-22 04:03:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:21,775 INFO L93 Difference]: Finished difference Result 1480 states and 1931 transitions. [2024-11-22 04:03:21,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:21,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2024-11-22 04:03:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:21,778 INFO L225 Difference]: With dead ends: 1480 [2024-11-22 04:03:21,778 INFO L226 Difference]: Without dead ends: 235 [2024-11-22 04:03:21,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:21,783 INFO L432 NwaCegarLoop]: 494 mSDtfsCounter, 62 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:21,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 918 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:21,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-22 04:03:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2024-11-22 04:03:21,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 208 states have (on average 1.5240384615384615) internal successors, (317), 209 states have internal predecessors, (317), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-22 04:03:21,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 357 transitions. [2024-11-22 04:03:21,800 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 357 transitions. Word has length 103 [2024-11-22 04:03:21,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:21,801 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 357 transitions. [2024-11-22 04:03:21,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-22 04:03:21,802 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 357 transitions. [2024-11-22 04:03:21,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-22 04:03:21,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:21,806 INFO L215 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] [2024-11-22 04:03:21,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 04:03:22,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:03:22,009 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:22,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:22,013 INFO L85 PathProgramCache]: Analyzing trace with hash -917328685, now seen corresponding path program 1 times [2024-11-22 04:03:22,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:22,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668430361] [2024-11-22 04:03:22,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:22,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:22,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:22,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668430361] [2024-11-22 04:03:22,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668430361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:22,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:22,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:03:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358111440] [2024-11-22 04:03:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:22,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:03:22,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:22,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:03:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:22,164 INFO L87 Difference]: Start difference. First operand 235 states and 357 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:22,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:22,174 INFO L93 Difference]: Finished difference Result 460 states and 699 transitions. [2024-11-22 04:03:22,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:03:22,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-22 04:03:22,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:22,176 INFO L225 Difference]: With dead ends: 460 [2024-11-22 04:03:22,176 INFO L226 Difference]: Without dead ends: 235 [2024-11-22 04:03:22,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:03:22,178 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 347 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:22,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 356 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:03:22,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-22 04:03:22,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2024-11-22 04:03:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 208 states have (on average 1.5192307692307692) internal successors, (316), 209 states have internal predecessors, (316), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-22 04:03:22,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 356 transitions. [2024-11-22 04:03:22,187 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 356 transitions. Word has length 112 [2024-11-22 04:03:22,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:22,187 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 356 transitions. [2024-11-22 04:03:22,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:22,187 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 356 transitions. [2024-11-22 04:03:22,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-22 04:03:22,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:22,188 INFO L215 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] [2024-11-22 04:03:22,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 04:03:22,189 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:22,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:22,189 INFO L85 PathProgramCache]: Analyzing trace with hash 389813713, now seen corresponding path program 1 times [2024-11-22 04:03:22,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:22,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203815531] [2024-11-22 04:03:22,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:22,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:22,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:22,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203815531] [2024-11-22 04:03:22,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203815531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:22,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:22,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:03:22,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103006200] [2024-11-22 04:03:22,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:22,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:03:22,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:22,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:03:22,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:03:22,287 INFO L87 Difference]: Start difference. First operand 235 states and 356 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:22,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:22,608 INFO L93 Difference]: Finished difference Result 699 states and 1072 transitions. [2024-11-22 04:03:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:03:22,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-22 04:03:22,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:22,611 INFO L225 Difference]: With dead ends: 699 [2024-11-22 04:03:22,612 INFO L226 Difference]: Without dead ends: 479 [2024-11-22 04:03:22,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:22,613 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 648 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:22,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 974 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:03:22,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-22 04:03:22,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 462. [2024-11-22 04:03:22,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 413 states have (on average 1.5326876513317191) internal successors, (633), 415 states have internal predecessors, (633), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2024-11-22 04:03:22,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 704 transitions. [2024-11-22 04:03:22,631 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 704 transitions. Word has length 112 [2024-11-22 04:03:22,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:22,631 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 704 transitions. [2024-11-22 04:03:22,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:22,632 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 704 transitions. [2024-11-22 04:03:22,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-22 04:03:22,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:22,633 INFO L215 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] [2024-11-22 04:03:22,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 04:03:22,633 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:22,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:22,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1741198931, now seen corresponding path program 1 times [2024-11-22 04:03:22,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:22,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758004212] [2024-11-22 04:03:22,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:22,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:22,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:22,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758004212] [2024-11-22 04:03:22,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758004212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:22,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:22,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:22,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589003806] [2024-11-22 04:03:22,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:22,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:22,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:22,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:22,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:22,741 INFO L87 Difference]: Start difference. First operand 462 states and 704 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:23,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:23,184 INFO L93 Difference]: Finished difference Result 1194 states and 1841 transitions. [2024-11-22 04:03:23,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:23,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-22 04:03:23,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:23,188 INFO L225 Difference]: With dead ends: 1194 [2024-11-22 04:03:23,188 INFO L226 Difference]: Without dead ends: 747 [2024-11-22 04:03:23,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:23,190 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 646 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:23,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 1861 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:03:23,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2024-11-22 04:03:23,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 674. [2024-11-22 04:03:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 603 states have (on average 1.5257048092868988) internal successors, (920), 606 states have internal predecessors, (920), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (54), 51 states have call predecessors, (54), 50 states have call successors, (54) [2024-11-22 04:03:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1024 transitions. [2024-11-22 04:03:23,219 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1024 transitions. Word has length 112 [2024-11-22 04:03:23,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:23,219 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1024 transitions. [2024-11-22 04:03:23,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1024 transitions. [2024-11-22 04:03:23,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-22 04:03:23,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:23,220 INFO L215 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] [2024-11-22 04:03:23,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 04:03:23,221 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:23,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:23,226 INFO L85 PathProgramCache]: Analyzing trace with hash 122224017, now seen corresponding path program 1 times [2024-11-22 04:03:23,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:23,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384450741] [2024-11-22 04:03:23,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:23,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:23,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:23,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:23,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384450741] [2024-11-22 04:03:23,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384450741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:23,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:23,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:23,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495320883] [2024-11-22 04:03:23,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:23,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:23,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:23,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:23,396 INFO L87 Difference]: Start difference. First operand 674 states and 1024 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:24,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:24,090 INFO L93 Difference]: Finished difference Result 1856 states and 2852 transitions. [2024-11-22 04:03:24,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:24,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-22 04:03:24,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:24,098 INFO L225 Difference]: With dead ends: 1856 [2024-11-22 04:03:24,098 INFO L226 Difference]: Without dead ends: 1197 [2024-11-22 04:03:24,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:24,101 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 638 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:24,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1831 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:03:24,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2024-11-22 04:03:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1120. [2024-11-22 04:03:24,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1003 states have (on average 1.5264207377866401) internal successors, (1531), 1010 states have internal predecessors, (1531), 80 states have call successors, (80), 30 states have call predecessors, (80), 36 states have return successors, (96), 83 states have call predecessors, (96), 80 states have call successors, (96) [2024-11-22 04:03:24,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1707 transitions. [2024-11-22 04:03:24,170 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1707 transitions. Word has length 112 [2024-11-22 04:03:24,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:24,170 INFO L471 AbstractCegarLoop]: Abstraction has 1120 states and 1707 transitions. [2024-11-22 04:03:24,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:24,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1707 transitions. [2024-11-22 04:03:24,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-22 04:03:24,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:24,172 INFO L215 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] [2024-11-22 04:03:24,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 04:03:24,173 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:24,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:24,173 INFO L85 PathProgramCache]: Analyzing trace with hash 93723727, now seen corresponding path program 1 times [2024-11-22 04:03:24,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:24,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258813770] [2024-11-22 04:03:24,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:24,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:24,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:24,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258813770] [2024-11-22 04:03:24,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258813770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:24,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:24,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:24,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758245775] [2024-11-22 04:03:24,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:24,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:24,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:24,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:24,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:24,299 INFO L87 Difference]: Start difference. First operand 1120 states and 1707 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:25,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:25,038 INFO L93 Difference]: Finished difference Result 3274 states and 5065 transitions. [2024-11-22 04:03:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:25,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-22 04:03:25,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:25,051 INFO L225 Difference]: With dead ends: 3274 [2024-11-22 04:03:25,051 INFO L226 Difference]: Without dead ends: 2169 [2024-11-22 04:03:25,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:25,055 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 633 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:25,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1819 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:03:25,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2024-11-22 04:03:25,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 2075. [2024-11-22 04:03:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 1860 states have (on average 1.5370967741935484) internal successors, (2859), 1881 states have internal predecessors, (2859), 140 states have call successors, (140), 54 states have call predecessors, (140), 74 states have return successors, (204), 147 states have call predecessors, (204), 140 states have call successors, (204) [2024-11-22 04:03:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 3203 transitions. [2024-11-22 04:03:25,183 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 3203 transitions. Word has length 112 [2024-11-22 04:03:25,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:25,184 INFO L471 AbstractCegarLoop]: Abstraction has 2075 states and 3203 transitions. [2024-11-22 04:03:25,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 3203 transitions. [2024-11-22 04:03:25,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-22 04:03:25,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:25,188 INFO L215 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] [2024-11-22 04:03:25,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 04:03:25,189 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:25,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:25,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1846858287, now seen corresponding path program 1 times [2024-11-22 04:03:25,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:25,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524955162] [2024-11-22 04:03:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:25,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:25,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524955162] [2024-11-22 04:03:25,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524955162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:25,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:25,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:25,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013835418] [2024-11-22 04:03:25,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:25,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:25,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:25,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:25,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:25,342 INFO L87 Difference]: Start difference. First operand 2075 states and 3203 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:26,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:26,041 INFO L93 Difference]: Finished difference Result 6343 states and 9999 transitions. [2024-11-22 04:03:26,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:26,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-22 04:03:26,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:26,062 INFO L225 Difference]: With dead ends: 6343 [2024-11-22 04:03:26,063 INFO L226 Difference]: Without dead ends: 4283 [2024-11-22 04:03:26,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:26,072 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 628 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:26,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 1807 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:03:26,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2024-11-22 04:03:26,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 4156. [2024-11-22 04:03:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4156 states, 3727 states have (on average 1.5559431177891065) internal successors, (5799), 3794 states have internal predecessors, (5799), 260 states have call successors, (260), 102 states have call predecessors, (260), 168 states have return successors, (516), 275 states have call predecessors, (516), 260 states have call successors, (516) [2024-11-22 04:03:26,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4156 states to 4156 states and 6575 transitions. [2024-11-22 04:03:26,365 INFO L78 Accepts]: Start accepts. Automaton has 4156 states and 6575 transitions. Word has length 112 [2024-11-22 04:03:26,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:26,365 INFO L471 AbstractCegarLoop]: Abstraction has 4156 states and 6575 transitions. [2024-11-22 04:03:26,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:26,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4156 states and 6575 transitions. [2024-11-22 04:03:26,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-22 04:03:26,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:26,369 INFO L215 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] [2024-11-22 04:03:26,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 04:03:26,370 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:26,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:26,370 INFO L85 PathProgramCache]: Analyzing trace with hash 30204943, now seen corresponding path program 1 times [2024-11-22 04:03:26,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:26,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344924320] [2024-11-22 04:03:26,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:26,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:26,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:26,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:26,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344924320] [2024-11-22 04:03:26,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344924320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:26,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:26,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:26,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868814569] [2024-11-22 04:03:26,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:26,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:26,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:26,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:26,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:26,521 INFO L87 Difference]: Start difference. First operand 4156 states and 6575 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:27,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:27,345 INFO L93 Difference]: Finished difference Result 13106 states and 21369 transitions. [2024-11-22 04:03:27,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:27,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-22 04:03:27,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:27,397 INFO L225 Difference]: With dead ends: 13106 [2024-11-22 04:03:27,397 INFO L226 Difference]: Without dead ends: 8965 [2024-11-22 04:03:27,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:27,455 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 623 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:27,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1795 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:03:27,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8965 states. [2024-11-22 04:03:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8965 to 8777. [2024-11-22 04:03:27,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8777 states, 7866 states have (on average 1.5798372743452835) internal successors, (12427), 8079 states have internal predecessors, (12427), 500 states have call successors, (500), 198 states have call predecessors, (500), 410 states have return successors, (1524), 531 states have call predecessors, (1524), 500 states have call successors, (1524) [2024-11-22 04:03:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8777 states to 8777 states and 14451 transitions. [2024-11-22 04:03:27,955 INFO L78 Accepts]: Start accepts. Automaton has 8777 states and 14451 transitions. Word has length 112 [2024-11-22 04:03:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:27,955 INFO L471 AbstractCegarLoop]: Abstraction has 8777 states and 14451 transitions. [2024-11-22 04:03:27,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:27,956 INFO L276 IsEmpty]: Start isEmpty. Operand 8777 states and 14451 transitions. [2024-11-22 04:03:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-22 04:03:27,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:27,962 INFO L215 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] [2024-11-22 04:03:27,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 04:03:27,962 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:27,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:27,963 INFO L85 PathProgramCache]: Analyzing trace with hash -740528623, now seen corresponding path program 1 times [2024-11-22 04:03:27,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:27,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159113565] [2024-11-22 04:03:27,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:27,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:28,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:28,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159113565] [2024-11-22 04:03:28,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159113565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:28,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:28,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:28,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617631559] [2024-11-22 04:03:28,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:28,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:28,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:28,180 INFO L87 Difference]: Start difference. First operand 8777 states and 14451 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:29,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:29,997 INFO L93 Difference]: Finished difference Result 29797 states and 50952 transitions. [2024-11-22 04:03:29,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:29,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-22 04:03:29,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:30,105 INFO L225 Difference]: With dead ends: 29797 [2024-11-22 04:03:30,106 INFO L226 Difference]: Without dead ends: 21035 [2024-11-22 04:03:30,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:30,133 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 681 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:30,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 1770 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 04:03:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21035 states. [2024-11-22 04:03:31,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21035 to 19138. [2024-11-22 04:03:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19138 states, 17133 states have (on average 1.607832837214732) internal successors, (27547), 17800 states have internal predecessors, (27547), 948 states have call successors, (948), 390 states have call predecessors, (948), 1056 states have return successors, (5044), 1011 states have call predecessors, (5044), 948 states have call successors, (5044) [2024-11-22 04:03:31,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19138 states to 19138 states and 33539 transitions. [2024-11-22 04:03:31,835 INFO L78 Accepts]: Start accepts. Automaton has 19138 states and 33539 transitions. Word has length 112 [2024-11-22 04:03:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:31,835 INFO L471 AbstractCegarLoop]: Abstraction has 19138 states and 33539 transitions. [2024-11-22 04:03:31,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 19138 states and 33539 transitions. [2024-11-22 04:03:31,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-22 04:03:31,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:31,868 INFO L215 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] [2024-11-22 04:03:31,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 04:03:31,868 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:31,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:31,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1735222321, now seen corresponding path program 1 times [2024-11-22 04:03:31,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:31,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615185929] [2024-11-22 04:03:31,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:31,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:32,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:32,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615185929] [2024-11-22 04:03:32,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615185929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:32,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:32,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:32,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372365037] [2024-11-22 04:03:32,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:32,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:32,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:32,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:32,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:32,052 INFO L87 Difference]: Start difference. First operand 19138 states and 33539 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:34,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:34,813 INFO L93 Difference]: Finished difference Result 65220 states and 121102 transitions. [2024-11-22 04:03:34,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:34,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-22 04:03:34,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:35,023 INFO L225 Difference]: With dead ends: 65220 [2024-11-22 04:03:35,023 INFO L226 Difference]: Without dead ends: 46097 [2024-11-22 04:03:35,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:35,096 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 805 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:35,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1271 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:03:35,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46097 states. [2024-11-22 04:03:38,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46097 to 42603. [2024-11-22 04:03:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42603 states, 37956 states have (on average 1.6344978396037517) internal successors, (62039), 40017 states have internal predecessors, (62039), 1812 states have call successors, (1812), 774 states have call predecessors, (1812), 2834 states have return successors, (18196), 1939 states have call predecessors, (18196), 1812 states have call successors, (18196) [2024-11-22 04:03:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42603 states to 42603 states and 82047 transitions. [2024-11-22 04:03:38,445 INFO L78 Accepts]: Start accepts. Automaton has 42603 states and 82047 transitions. Word has length 112 [2024-11-22 04:03:38,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:38,445 INFO L471 AbstractCegarLoop]: Abstraction has 42603 states and 82047 transitions. [2024-11-22 04:03:38,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:38,445 INFO L276 IsEmpty]: Start isEmpty. Operand 42603 states and 82047 transitions. [2024-11-22 04:03:38,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-22 04:03:38,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:38,462 INFO L215 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] [2024-11-22 04:03:38,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 04:03:38,463 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:38,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:38,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1973468753, now seen corresponding path program 1 times [2024-11-22 04:03:38,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:38,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277996072] [2024-11-22 04:03:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:38,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:38,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:38,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277996072] [2024-11-22 04:03:38,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277996072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:38,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:38,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:38,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136673124] [2024-11-22 04:03:38,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:38,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:38,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:38,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:38,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:38,627 INFO L87 Difference]: Start difference. First operand 42603 states and 82047 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:44,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:03:44,929 INFO L93 Difference]: Finished difference Result 145679 states and 306028 transitions. [2024-11-22 04:03:44,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:03:44,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-22 04:03:44,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:03:45,944 INFO L225 Difference]: With dead ends: 145679 [2024-11-22 04:03:45,944 INFO L226 Difference]: Without dead ends: 103091 [2024-11-22 04:03:46,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:03:46,068 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 742 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 04:03:46,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1746 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 04:03:46,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103091 states. [2024-11-22 04:03:54,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103091 to 97680. [2024-11-22 04:03:54,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97680 states, 86355 states have (on average 1.6560361299287822) internal successors, (143007), 92662 states have internal predecessors, (143007), 3476 states have call successors, (3476), 1542 states have call predecessors, (3476), 7848 states have return successors, (69012), 3731 states have call predecessors, (69012), 3476 states have call successors, (69012) [2024-11-22 04:03:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97680 states to 97680 states and 215495 transitions. [2024-11-22 04:03:55,147 INFO L78 Accepts]: Start accepts. Automaton has 97680 states and 215495 transitions. Word has length 112 [2024-11-22 04:03:55,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:03:55,148 INFO L471 AbstractCegarLoop]: Abstraction has 97680 states and 215495 transitions. [2024-11-22 04:03:55,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:03:55,148 INFO L276 IsEmpty]: Start isEmpty. Operand 97680 states and 215495 transitions. [2024-11-22 04:03:55,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-22 04:03:55,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:03:55,178 INFO L215 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] [2024-11-22 04:03:55,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 04:03:55,180 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:03:55,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:03:55,180 INFO L85 PathProgramCache]: Analyzing trace with hash 14893967, now seen corresponding path program 1 times [2024-11-22 04:03:55,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:03:55,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019869989] [2024-11-22 04:03:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:03:55,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:03:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:03:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:03:55,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:03:55,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019869989] [2024-11-22 04:03:55,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019869989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:03:55,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:03:55,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:03:55,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404070594] [2024-11-22 04:03:55,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:03:55,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:03:55,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:03:55,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:03:55,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:03:55,266 INFO L87 Difference]: Start difference. First operand 97680 states and 215495 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)