./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU --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 067fe51884f92ae3774f211cf9d4291369df85b7690d3eee54cd23a70c2ea301 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:05:13,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:05:13,120 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:05:13,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:05:13,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:05:13,173 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:05:13,174 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:05:13,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:05:13,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:05:13,178 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:05:13,179 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:05:13,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:05:13,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:05:13,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:05:13,180 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:05:13,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:05:13,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:05:13,184 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:05:13,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:05:13,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:05:13,188 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:05:13,189 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:05:13,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:05:13,189 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:05:13,190 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:05:13,190 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:05:13,190 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:05:13,190 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:05:13,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:05:13,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:05:13,191 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:05:13,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:05:13,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:13,192 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:05:13,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:05:13,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:05:13,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:05:13,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:05:13,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:05:13,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:05:13,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:05:13,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:05:13,198 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 067fe51884f92ae3774f211cf9d4291369df85b7690d3eee54cd23a70c2ea301 [2024-10-31 22:05:13,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:05:13,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:05:13,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:05:13,517 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:05:13,518 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:05:13,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c Unable to find full path for "g++" [2024-10-31 22:05:15,482 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:05:15,766 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:05:15,767 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c [2024-10-31 22:05:15,788 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/data/bf322a28d/acc1e063e16c4eaf8413e3429b2f532a/FLAG1c5cf902b [2024-10-31 22:05:15,810 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/data/bf322a28d/acc1e063e16c4eaf8413e3429b2f532a [2024-10-31 22:05:15,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:05:15,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:05:15,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:15,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:05:15,821 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:05:15,822 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:15" (1/1) ... [2024-10-31 22:05:15,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23391911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:15, skipping insertion in model container [2024-10-31 22:05:15,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:15" (1/1) ... [2024-10-31 22:05:15,890 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:05:16,121 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c[646,659] [2024-10-31 22:05:16,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:16,253 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:05:16,270 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c[646,659] [2024-10-31 22:05:16,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:16,376 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:05:16,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:16 WrapperNode [2024-10-31 22:05:16,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:16,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:16,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:05:16,379 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:05:16,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:16" (1/1) ... [2024-10-31 22:05:16,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:16" (1/1) ... [2024-10-31 22:05:16,466 INFO L138 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 867 [2024-10-31 22:05:16,467 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:16,467 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:05:16,468 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:05:16,468 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:05:16,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:16" (1/1) ... [2024-10-31 22:05:16,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:16" (1/1) ... [2024-10-31 22:05:16,498 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:16" (1/1) ... [2024-10-31 22:05:16,527 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]. [2024-10-31 22:05:16,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:16" (1/1) ... [2024-10-31 22:05:16,528 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:16" (1/1) ... [2024-10-31 22:05:16,548 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:16" (1/1) ... [2024-10-31 22:05:16,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:16" (1/1) ... [2024-10-31 22:05:16,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:16" (1/1) ... [2024-10-31 22:05:16,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:16" (1/1) ... [2024-10-31 22:05:16,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:05:16,607 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:05:16,608 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:05:16,608 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:05:16,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:16" (1/1) ... [2024-10-31 22:05:16,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:16,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:16,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:05:16,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:05:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:05:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:05:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-10-31 22:05:16,681 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-10-31 22:05:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:05:16,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:05:16,789 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:05:16,794 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:05:17,888 INFO L? ?]: Removed 96 outVars from TransFormulas that were not future-live. [2024-10-31 22:05:17,889 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:05:17,917 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:05:17,918 INFO L316 CfgBuilder]: Removed 13 assume(true) statements. [2024-10-31 22:05:17,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:17 BoogieIcfgContainer [2024-10-31 22:05:17,921 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:05:17,925 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:05:17,925 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:05:17,928 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:05:17,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:05:15" (1/3) ... [2024-10-31 22:05:17,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2bf78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:17, skipping insertion in model container [2024-10-31 22:05:17,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:16" (2/3) ... [2024-10-31 22:05:17,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2bf78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:17, skipping insertion in model container [2024-10-31 22:05:17,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:17" (3/3) ... [2024-10-31 22:05:17,931 INFO L112 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.5.cil.c [2024-10-31 22:05:17,952 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:05:17,952 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:05:18,037 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:05:18,044 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;@158f0eaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:05:18,044 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:05:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 271 states have (on average 1.8560885608856088) internal successors, (503), 277 states have internal predecessors, (503), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-31 22:05:18,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-31 22:05:18,066 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:18,066 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] [2024-10-31 22:05:18,067 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:18,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:18,072 INFO L85 PathProgramCache]: Analyzing trace with hash 193087859, now seen corresponding path program 1 times [2024-10-31 22:05:18,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:18,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95740712] [2024-10-31 22:05:18,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:18,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:18,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:18,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:18,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95740712] [2024-10-31 22:05:18,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95740712] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:18,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:18,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:18,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782052320] [2024-10-31 22:05:18,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:18,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:18,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:18,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:18,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:18,398 INFO L87 Difference]: Start difference. First operand has 279 states, 271 states have (on average 1.8560885608856088) internal successors, (503), 277 states have internal predecessors, (503), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:18,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:18,965 INFO L93 Difference]: Finished difference Result 736 states and 1353 transitions. [2024-10-31 22:05:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:18,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-31 22:05:18,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:18,986 INFO L225 Difference]: With dead ends: 736 [2024-10-31 22:05:18,987 INFO L226 Difference]: Without dead ends: 454 [2024-10-31 22:05:18,992 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 [2024-10-31 22:05:18,998 INFO L432 NwaCegarLoop]: 483 mSDtfsCounter, 271 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:19,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 797 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:05:19,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-10-31 22:05:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 441. [2024-10-31 22:05:19,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 435 states have (on average 1.6045977011494252) internal successors, (698), 439 states have internal predecessors, (698), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:19,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 703 transitions. [2024-10-31 22:05:19,090 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 703 transitions. Word has length 29 [2024-10-31 22:05:19,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:19,092 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 703 transitions. [2024-10-31 22:05:19,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:19,093 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 703 transitions. [2024-10-31 22:05:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-31 22:05:19,097 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:19,097 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] [2024-10-31 22:05:19,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:05:19,098 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:19,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:19,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1865699697, now seen corresponding path program 1 times [2024-10-31 22:05:19,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:19,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535521353] [2024-10-31 22:05:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:19,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:19,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:19,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535521353] [2024-10-31 22:05:19,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535521353] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:19,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:19,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:19,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336230848] [2024-10-31 22:05:19,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:19,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:19,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:19,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:19,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:19,259 INFO L87 Difference]: Start difference. First operand 441 states and 703 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:19,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:19,425 INFO L93 Difference]: Finished difference Result 1161 states and 1877 transitions. [2024-10-31 22:05:19,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:19,426 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-10-31 22:05:19,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:19,431 INFO L225 Difference]: With dead ends: 1161 [2024-10-31 22:05:19,431 INFO L226 Difference]: Without dead ends: 734 [2024-10-31 22:05:19,434 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 [2024-10-31 22:05:19,436 INFO L432 NwaCegarLoop]: 654 mSDtfsCounter, 334 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:19,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1040 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:05:19,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2024-10-31 22:05:19,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 721. [2024-10-31 22:05:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 715 states have (on average 1.6391608391608392) internal successors, (1172), 719 states have internal predecessors, (1172), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1177 transitions. [2024-10-31 22:05:19,495 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1177 transitions. Word has length 41 [2024-10-31 22:05:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:19,496 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1177 transitions. [2024-10-31 22:05:19,497 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:19,497 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1177 transitions. [2024-10-31 22:05:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-31 22:05:19,502 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:19,502 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] [2024-10-31 22:05:19,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:05:19,503 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:19,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:19,503 INFO L85 PathProgramCache]: Analyzing trace with hash 614817242, now seen corresponding path program 1 times [2024-10-31 22:05:19,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:19,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363858279] [2024-10-31 22:05:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:19,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:19,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:19,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:19,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363858279] [2024-10-31 22:05:19,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363858279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:19,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:19,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:19,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911188557] [2024-10-31 22:05:19,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:19,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:19,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:19,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:19,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:19,616 INFO L87 Difference]: Start difference. First operand 721 states and 1177 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:19,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:19,689 INFO L93 Difference]: Finished difference Result 1809 states and 2948 transitions. [2024-10-31 22:05:19,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:19,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-10-31 22:05:19,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:19,695 INFO L225 Difference]: With dead ends: 1809 [2024-10-31 22:05:19,697 INFO L226 Difference]: Without dead ends: 1113 [2024-10-31 22:05:19,700 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 [2024-10-31 22:05:19,703 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 361 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:19,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 821 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:05:19,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2024-10-31 22:05:19,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1102. [2024-10-31 22:05:19,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1096 states have (on average 1.6259124087591241) internal successors, (1782), 1100 states have internal predecessors, (1782), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1787 transitions. [2024-10-31 22:05:19,752 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1787 transitions. Word has length 42 [2024-10-31 22:05:19,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:19,753 INFO L471 AbstractCegarLoop]: Abstraction has 1102 states and 1787 transitions. [2024-10-31 22:05:19,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1787 transitions. [2024-10-31 22:05:19,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-31 22:05:19,755 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:19,757 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:19,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:05:19,758 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:19,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:19,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2063798548, now seen corresponding path program 1 times [2024-10-31 22:05:19,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:19,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214067895] [2024-10-31 22:05:19,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:19,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:19,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:19,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:19,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214067895] [2024-10-31 22:05:19,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214067895] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:19,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:19,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:19,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45788923] [2024-10-31 22:05:19,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:19,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:19,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:19,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:19,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:19,880 INFO L87 Difference]: Start difference. First operand 1102 states and 1787 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:20,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:20,439 INFO L93 Difference]: Finished difference Result 3042 states and 4911 transitions. [2024-10-31 22:05:20,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:05:20,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-10-31 22:05:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:20,450 INFO L225 Difference]: With dead ends: 3042 [2024-10-31 22:05:20,450 INFO L226 Difference]: Without dead ends: 1965 [2024-10-31 22:05:20,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:05:20,479 INFO L432 NwaCegarLoop]: 710 mSDtfsCounter, 592 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:20,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 1606 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:05:20,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2024-10-31 22:05:20,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1732. [2024-10-31 22:05:20,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1726 states have (on average 1.6025492468134415) internal successors, (2766), 1730 states have internal predecessors, (2766), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:20,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2771 transitions. [2024-10-31 22:05:20,547 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2771 transitions. Word has length 48 [2024-10-31 22:05:20,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:20,547 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2771 transitions. [2024-10-31 22:05:20,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:20,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2771 transitions. [2024-10-31 22:05:20,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-31 22:05:20,550 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:20,550 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] [2024-10-31 22:05:20,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:05:20,551 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:20,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:20,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1086798560, now seen corresponding path program 1 times [2024-10-31 22:05:20,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:20,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109760817] [2024-10-31 22:05:20,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:20,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:20,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:20,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109760817] [2024-10-31 22:05:20,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109760817] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:20,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:20,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:20,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747110964] [2024-10-31 22:05:20,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:20,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:20,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:20,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:20,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:20,711 INFO L87 Difference]: Start difference. First operand 1732 states and 2771 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:21,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:21,389 INFO L93 Difference]: Finished difference Result 5153 states and 8152 transitions. [2024-10-31 22:05:21,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:05:21,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-31 22:05:21,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:21,403 INFO L225 Difference]: With dead ends: 5153 [2024-10-31 22:05:21,404 INFO L226 Difference]: Without dead ends: 3440 [2024-10-31 22:05:21,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:05:21,409 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 758 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:21,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1088 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:05:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3440 states. [2024-10-31 22:05:21,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3440 to 3058. [2024-10-31 22:05:21,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3058 states, 3052 states have (on average 1.577653997378768) internal successors, (4815), 3056 states have internal predecessors, (4815), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 4820 transitions. [2024-10-31 22:05:21,547 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 4820 transitions. Word has length 53 [2024-10-31 22:05:21,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:21,548 INFO L471 AbstractCegarLoop]: Abstraction has 3058 states and 4820 transitions. [2024-10-31 22:05:21,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:21,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 4820 transitions. [2024-10-31 22:05:21,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-31 22:05:21,550 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:21,551 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] [2024-10-31 22:05:21,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:05:21,551 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:21,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:21,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1057985577, now seen corresponding path program 1 times [2024-10-31 22:05:21,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:21,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067157221] [2024-10-31 22:05:21,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:21,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:21,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:21,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067157221] [2024-10-31 22:05:21,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067157221] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:21,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:21,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:21,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251595373] [2024-10-31 22:05:21,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:21,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:21,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:21,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:21,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:21,633 INFO L87 Difference]: Start difference. First operand 3058 states and 4820 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:21,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:21,787 INFO L93 Difference]: Finished difference Result 7193 states and 11301 transitions. [2024-10-31 22:05:21,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:21,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-31 22:05:21,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:21,807 INFO L225 Difference]: With dead ends: 7193 [2024-10-31 22:05:21,807 INFO L226 Difference]: Without dead ends: 4158 [2024-10-31 22:05:21,814 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 [2024-10-31 22:05:21,816 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 376 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:21,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 728 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:05:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2024-10-31 22:05:22,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 3974. [2024-10-31 22:05:22,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3974 states, 3968 states have (on average 1.5597278225806452) internal successors, (6189), 3972 states have internal predecessors, (6189), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 6194 transitions. [2024-10-31 22:05:22,060 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 6194 transitions. Word has length 53 [2024-10-31 22:05:22,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:22,061 INFO L471 AbstractCegarLoop]: Abstraction has 3974 states and 6194 transitions. [2024-10-31 22:05:22,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:22,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 6194 transitions. [2024-10-31 22:05:22,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-31 22:05:22,064 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:22,065 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] [2024-10-31 22:05:22,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:05:22,065 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:22,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:22,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1920778764, now seen corresponding path program 1 times [2024-10-31 22:05:22,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:22,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369145245] [2024-10-31 22:05:22,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:22,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:22,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369145245] [2024-10-31 22:05:22,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369145245] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:22,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:22,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:22,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054211571] [2024-10-31 22:05:22,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:22,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:22,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:22,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:22,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:22,147 INFO L87 Difference]: Start difference. First operand 3974 states and 6194 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:22,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:22,636 INFO L93 Difference]: Finished difference Result 9562 states and 15028 transitions. [2024-10-31 22:05:22,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:22,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-31 22:05:22,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:22,657 INFO L225 Difference]: With dead ends: 9562 [2024-10-31 22:05:22,657 INFO L226 Difference]: Without dead ends: 5611 [2024-10-31 22:05:22,663 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 [2024-10-31 22:05:22,664 INFO L432 NwaCegarLoop]: 597 mSDtfsCounter, 258 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:22,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 897 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:05:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2024-10-31 22:05:22,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 4818. [2024-10-31 22:05:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4818 states, 4812 states have (on average 1.5045719035743974) internal successors, (7240), 4816 states have internal predecessors, (7240), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 7245 transitions. [2024-10-31 22:05:22,883 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 7245 transitions. Word has length 62 [2024-10-31 22:05:22,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:22,884 INFO L471 AbstractCegarLoop]: Abstraction has 4818 states and 7245 transitions. [2024-10-31 22:05:22,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:22,884 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 7245 transitions. [2024-10-31 22:05:22,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-31 22:05:22,887 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:22,887 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] [2024-10-31 22:05:22,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:05:22,887 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:22,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:22,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1239764768, now seen corresponding path program 1 times [2024-10-31 22:05:22,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:22,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172935176] [2024-10-31 22:05:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:22,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:23,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:23,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:23,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172935176] [2024-10-31 22:05:23,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172935176] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:23,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:23,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:23,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682696342] [2024-10-31 22:05:23,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:23,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:23,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:23,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:23,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:23,004 INFO L87 Difference]: Start difference. First operand 4818 states and 7245 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:23,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:23,228 INFO L93 Difference]: Finished difference Result 9479 states and 14267 transitions. [2024-10-31 22:05:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:23,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-31 22:05:23,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:23,244 INFO L225 Difference]: With dead ends: 9479 [2024-10-31 22:05:23,245 INFO L226 Difference]: Without dead ends: 4684 [2024-10-31 22:05:23,249 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 [2024-10-31 22:05:23,250 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 353 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:23,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 451 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:05:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2024-10-31 22:05:23,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 4684. [2024-10-31 22:05:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4684 states, 4678 states have (on average 1.4833262077811031) internal successors, (6939), 4682 states have internal predecessors, (6939), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4684 states to 4684 states and 6944 transitions. [2024-10-31 22:05:23,430 INFO L78 Accepts]: Start accepts. Automaton has 4684 states and 6944 transitions. Word has length 64 [2024-10-31 22:05:23,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:23,430 INFO L471 AbstractCegarLoop]: Abstraction has 4684 states and 6944 transitions. [2024-10-31 22:05:23,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:23,431 INFO L276 IsEmpty]: Start isEmpty. Operand 4684 states and 6944 transitions. [2024-10-31 22:05:23,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 22:05:23,433 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:23,433 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] [2024-10-31 22:05:23,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:05:23,434 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:23,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:23,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1801528906, now seen corresponding path program 1 times [2024-10-31 22:05:23,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:23,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121993689] [2024-10-31 22:05:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:23,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:23,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:23,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121993689] [2024-10-31 22:05:23,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121993689] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:23,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:23,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:23,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517153382] [2024-10-31 22:05:23,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:23,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:23,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:23,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:23,492 INFO L87 Difference]: Start difference. First operand 4684 states and 6944 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:23,698 INFO L93 Difference]: Finished difference Result 8890 states and 13267 transitions. [2024-10-31 22:05:23,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:23,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-31 22:05:23,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:23,722 INFO L225 Difference]: With dead ends: 8890 [2024-10-31 22:05:23,723 INFO L226 Difference]: Without dead ends: 4229 [2024-10-31 22:05:23,729 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 [2024-10-31 22:05:23,731 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 152 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:23,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 910 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:05:23,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4229 states. [2024-10-31 22:05:23,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4229 to 3586. [2024-10-31 22:05:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3580 states have (on average 1.497486033519553) internal successors, (5361), 3584 states have internal predecessors, (5361), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 5366 transitions. [2024-10-31 22:05:23,900 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 5366 transitions. Word has length 65 [2024-10-31 22:05:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:23,901 INFO L471 AbstractCegarLoop]: Abstraction has 3586 states and 5366 transitions. [2024-10-31 22:05:23,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 5366 transitions. [2024-10-31 22:05:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-31 22:05:23,903 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:23,903 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] [2024-10-31 22:05:23,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:05:23,903 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:23,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:23,904 INFO L85 PathProgramCache]: Analyzing trace with hash -106317501, now seen corresponding path program 1 times [2024-10-31 22:05:23,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:23,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983889354] [2024-10-31 22:05:23,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:23,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:24,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:24,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983889354] [2024-10-31 22:05:24,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983889354] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:24,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:24,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:05:24,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949600324] [2024-10-31 22:05:24,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:24,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:05:24,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:24,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:05:24,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:24,063 INFO L87 Difference]: Start difference. First operand 3586 states and 5366 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:24,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:24,849 INFO L93 Difference]: Finished difference Result 9781 states and 14534 transitions. [2024-10-31 22:05:24,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:05:24,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-31 22:05:24,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:24,869 INFO L225 Difference]: With dead ends: 9781 [2024-10-31 22:05:24,869 INFO L226 Difference]: Without dead ends: 6420 [2024-10-31 22:05:24,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:05:24,877 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 970 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:24,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 2461 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 22:05:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6420 states. [2024-10-31 22:05:25,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6420 to 4456. [2024-10-31 22:05:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 4450 states have (on average 1.4883146067415731) internal successors, (6623), 4454 states have internal predecessors, (6623), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:25,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 6628 transitions. [2024-10-31 22:05:25,122 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 6628 transitions. Word has length 67 [2024-10-31 22:05:25,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:25,122 INFO L471 AbstractCegarLoop]: Abstraction has 4456 states and 6628 transitions. [2024-10-31 22:05:25,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:25,123 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 6628 transitions. [2024-10-31 22:05:25,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-31 22:05:25,125 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:25,125 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] [2024-10-31 22:05:25,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:05:25,125 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:25,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:25,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1482385041, now seen corresponding path program 1 times [2024-10-31 22:05:25,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:25,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083225081] [2024-10-31 22:05:25,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:25,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:25,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:25,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083225081] [2024-10-31 22:05:25,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083225081] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:25,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:25,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:05:25,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884105433] [2024-10-31 22:05:25,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:25,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:05:25,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:25,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:05:25,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:05:25,244 INFO L87 Difference]: Start difference. First operand 4456 states and 6628 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:25,695 INFO L93 Difference]: Finished difference Result 10705 states and 15778 transitions. [2024-10-31 22:05:25,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:05:25,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-10-31 22:05:25,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:25,712 INFO L225 Difference]: With dead ends: 10705 [2024-10-31 22:05:25,713 INFO L226 Difference]: Without dead ends: 6474 [2024-10-31 22:05:25,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:05:25,718 INFO L432 NwaCegarLoop]: 551 mSDtfsCounter, 842 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:25,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 2994 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:05:25,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6474 states. [2024-10-31 22:05:25,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6474 to 4766. [2024-10-31 22:05:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4766 states, 4760 states have (on average 1.4779411764705883) internal successors, (7035), 4764 states have internal predecessors, (7035), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:25,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 7040 transitions. [2024-10-31 22:05:25,921 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 7040 transitions. Word has length 68 [2024-10-31 22:05:25,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:25,922 INFO L471 AbstractCegarLoop]: Abstraction has 4766 states and 7040 transitions. [2024-10-31 22:05:25,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 7040 transitions. [2024-10-31 22:05:25,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-31 22:05:25,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:25,925 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:25,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:05:25,925 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:25,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:25,926 INFO L85 PathProgramCache]: Analyzing trace with hash 810462579, now seen corresponding path program 1 times [2024-10-31 22:05:25,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:25,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503441029] [2024-10-31 22:05:25,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:25,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:25,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:25,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503441029] [2024-10-31 22:05:25,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503441029] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:25,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:25,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:25,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926028791] [2024-10-31 22:05:25,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:25,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:25,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:25,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:25,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:25,979 INFO L87 Difference]: Start difference. First operand 4766 states and 7040 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:26,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:26,236 INFO L93 Difference]: Finished difference Result 10055 states and 14832 transitions. [2024-10-31 22:05:26,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:26,237 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-31 22:05:26,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:26,250 INFO L225 Difference]: With dead ends: 10055 [2024-10-31 22:05:26,250 INFO L226 Difference]: Without dead ends: 5310 [2024-10-31 22:05:26,257 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 [2024-10-31 22:05:26,258 INFO L432 NwaCegarLoop]: 456 mSDtfsCounter, 143 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:26,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 834 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:05:26,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5310 states. [2024-10-31 22:05:26,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5310 to 5236. [2024-10-31 22:05:26,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5236 states, 5230 states have (on average 1.4747609942638624) internal successors, (7713), 5234 states have internal predecessors, (7713), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:26,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5236 states to 5236 states and 7718 transitions. [2024-10-31 22:05:26,457 INFO L78 Accepts]: Start accepts. Automaton has 5236 states and 7718 transitions. Word has length 79 [2024-10-31 22:05:26,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:26,457 INFO L471 AbstractCegarLoop]: Abstraction has 5236 states and 7718 transitions. [2024-10-31 22:05:26,458 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:26,458 INFO L276 IsEmpty]: Start isEmpty. Operand 5236 states and 7718 transitions. [2024-10-31 22:05:26,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-31 22:05:26,460 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:26,460 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:26,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:05:26,461 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:26,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:26,463 INFO L85 PathProgramCache]: Analyzing trace with hash -22506739, now seen corresponding path program 1 times [2024-10-31 22:05:26,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:26,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735163970] [2024-10-31 22:05:26,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:26,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:26,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:26,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735163970] [2024-10-31 22:05:26,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735163970] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:26,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:26,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:26,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020914589] [2024-10-31 22:05:26,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:26,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:26,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:26,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:26,577 INFO L87 Difference]: Start difference. First operand 5236 states and 7718 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:27,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:27,262 INFO L93 Difference]: Finished difference Result 14006 states and 20488 transitions. [2024-10-31 22:05:27,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:05:27,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-10-31 22:05:27,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:27,284 INFO L225 Difference]: With dead ends: 14006 [2024-10-31 22:05:27,285 INFO L226 Difference]: Without dead ends: 8669 [2024-10-31 22:05:27,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:05:27,294 INFO L432 NwaCegarLoop]: 579 mSDtfsCounter, 658 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:27,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1288 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:05:27,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8669 states. [2024-10-31 22:05:27,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8669 to 7699. [2024-10-31 22:05:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7699 states, 7693 states have (on average 1.443000129988301) internal successors, (11101), 7697 states have internal predecessors, (11101), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:27,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7699 states to 7699 states and 11106 transitions. [2024-10-31 22:05:27,628 INFO L78 Accepts]: Start accepts. Automaton has 7699 states and 11106 transitions. Word has length 91 [2024-10-31 22:05:27,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:27,629 INFO L471 AbstractCegarLoop]: Abstraction has 7699 states and 11106 transitions. [2024-10-31 22:05:27,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:27,629 INFO L276 IsEmpty]: Start isEmpty. Operand 7699 states and 11106 transitions. [2024-10-31 22:05:27,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-31 22:05:27,632 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:27,632 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:27,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:05:27,633 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:27,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:27,634 INFO L85 PathProgramCache]: Analyzing trace with hash 713103324, now seen corresponding path program 1 times [2024-10-31 22:05:27,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:27,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798595829] [2024-10-31 22:05:27,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:27,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:27,709 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:27,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:27,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798595829] [2024-10-31 22:05:27,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798595829] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:27,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:27,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:27,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623988068] [2024-10-31 22:05:27,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:27,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:27,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:27,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:27,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:27,711 INFO L87 Difference]: Start difference. First operand 7699 states and 11106 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:27,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:27,944 INFO L93 Difference]: Finished difference Result 11093 states and 16026 transitions. [2024-10-31 22:05:27,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:27,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-10-31 22:05:27,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:27,964 INFO L225 Difference]: With dead ends: 11093 [2024-10-31 22:05:27,964 INFO L226 Difference]: Without dead ends: 3397 [2024-10-31 22:05:27,971 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 [2024-10-31 22:05:27,972 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 347 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:27,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 529 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:05:27,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2024-10-31 22:05:28,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3344. [2024-10-31 22:05:28,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 3338 states have (on average 1.3523067705212701) internal successors, (4514), 3342 states have internal predecessors, (4514), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:28,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 4519 transitions. [2024-10-31 22:05:28,100 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 4519 transitions. Word has length 99 [2024-10-31 22:05:28,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:28,101 INFO L471 AbstractCegarLoop]: Abstraction has 3344 states and 4519 transitions. [2024-10-31 22:05:28,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:28,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 4519 transitions. [2024-10-31 22:05:28,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-10-31 22:05:28,104 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:28,104 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:28,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:05:28,105 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:28,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:28,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1037594014, now seen corresponding path program 1 times [2024-10-31 22:05:28,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:28,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694478609] [2024-10-31 22:05:28,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:28,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:28,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:28,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694478609] [2024-10-31 22:05:28,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694478609] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:28,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:28,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:05:28,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575176233] [2024-10-31 22:05:28,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:28,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:05:28,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:28,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:05:28,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:05:28,205 INFO L87 Difference]: Start difference. First operand 3344 states and 4519 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:28,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:28,466 INFO L93 Difference]: Finished difference Result 7627 states and 10298 transitions. [2024-10-31 22:05:28,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:05:28,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-10-31 22:05:28,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:28,479 INFO L225 Difference]: With dead ends: 7627 [2024-10-31 22:05:28,479 INFO L226 Difference]: Without dead ends: 4460 [2024-10-31 22:05:28,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:05:28,486 INFO L432 NwaCegarLoop]: 723 mSDtfsCounter, 555 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:28,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 2412 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:05:28,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4460 states. [2024-10-31 22:05:28,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4460 to 3346. [2024-10-31 22:05:28,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3346 states, 3340 states have (on average 1.3502994011976048) internal successors, (4510), 3344 states have internal predecessors, (4510), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3346 states to 3346 states and 4515 transitions. [2024-10-31 22:05:28,662 INFO L78 Accepts]: Start accepts. Automaton has 3346 states and 4515 transitions. Word has length 101 [2024-10-31 22:05:28,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:28,662 INFO L471 AbstractCegarLoop]: Abstraction has 3346 states and 4515 transitions. [2024-10-31 22:05:28,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:28,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3346 states and 4515 transitions. [2024-10-31 22:05:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-31 22:05:28,664 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:28,665 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:28,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 22:05:28,668 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:28,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:28,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1285693593, now seen corresponding path program 1 times [2024-10-31 22:05:28,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:28,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197888329] [2024-10-31 22:05:28,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:28,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:28,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:28,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197888329] [2024-10-31 22:05:28,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197888329] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:28,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526395826] [2024-10-31 22:05:28,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:28,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:28,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:28,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:28,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:05:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:28,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:05:28,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:05:29,076 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:29,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526395826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:29,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:05:29,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-31 22:05:29,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317585637] [2024-10-31 22:05:29,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:29,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:29,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:29,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:29,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:29,078 INFO L87 Difference]: Start difference. First operand 3346 states and 4515 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:29,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:29,243 INFO L93 Difference]: Finished difference Result 3993 states and 5384 transitions. [2024-10-31 22:05:29,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:29,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-10-31 22:05:29,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:29,255 INFO L225 Difference]: With dead ends: 3993 [2024-10-31 22:05:29,255 INFO L226 Difference]: Without dead ends: 3989 [2024-10-31 22:05:29,257 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 [2024-10-31 22:05:29,258 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 241 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:29,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 819 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:05:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3989 states. [2024-10-31 22:05:29,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3989 to 3939. [2024-10-31 22:05:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3933 states have (on average 1.3478260869565217) internal successors, (5301), 3937 states have internal predecessors, (5301), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:29,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5306 transitions. [2024-10-31 22:05:29,513 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5306 transitions. Word has length 103 [2024-10-31 22:05:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:29,514 INFO L471 AbstractCegarLoop]: Abstraction has 3939 states and 5306 transitions. [2024-10-31 22:05:29,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5306 transitions. [2024-10-31 22:05:29,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-10-31 22:05:29,519 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:29,520 INFO L215 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:29,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:05:29,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-31 22:05:29,721 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:29,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:29,722 INFO L85 PathProgramCache]: Analyzing trace with hash -219637223, now seen corresponding path program 1 times [2024-10-31 22:05:29,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:29,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745021714] [2024-10-31 22:05:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:29,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:29,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:29,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745021714] [2024-10-31 22:05:29,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745021714] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:29,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626510343] [2024-10-31 22:05:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:29,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:29,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:29,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:29,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:05:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:30,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:05:30,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:05:30,228 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:30,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626510343] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:30,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:05:30,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-31 22:05:30,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147945702] [2024-10-31 22:05:30,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:30,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:30,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:30,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:30,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:30,231 INFO L87 Difference]: Start difference. First operand 3939 states and 5306 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:30,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:30,439 INFO L93 Difference]: Finished difference Result 7022 states and 9512 transitions. [2024-10-31 22:05:30,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:30,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2024-10-31 22:05:30,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:30,449 INFO L225 Difference]: With dead ends: 7022 [2024-10-31 22:05:30,450 INFO L226 Difference]: Without dead ends: 3088 [2024-10-31 22:05:30,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:30,455 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 272 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:30,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 430 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:05:30,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3088 states. [2024-10-31 22:05:30,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3088 to 2866. [2024-10-31 22:05:30,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2860 states have (on average 1.3297202797202796) internal successors, (3803), 2864 states have internal predecessors, (3803), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 3808 transitions. [2024-10-31 22:05:30,574 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 3808 transitions. Word has length 160 [2024-10-31 22:05:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:30,575 INFO L471 AbstractCegarLoop]: Abstraction has 2866 states and 3808 transitions. [2024-10-31 22:05:30,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:30,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 3808 transitions. [2024-10-31 22:05:30,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-31 22:05:30,578 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:30,579 INFO L215 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:30,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:05:30,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-31 22:05:30,780 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:30,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:30,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1280711905, now seen corresponding path program 1 times [2024-10-31 22:05:30,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:30,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677362214] [2024-10-31 22:05:30,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:30,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:05:31,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:31,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677362214] [2024-10-31 22:05:31,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677362214] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:31,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088595079] [2024-10-31 22:05:31,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:31,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:31,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:31,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:31,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:05:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:31,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:05:31,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-31 22:05:31,288 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:31,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088595079] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:31,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:05:31,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-31 22:05:31,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463019591] [2024-10-31 22:05:31,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:31,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:31,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:31,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:31,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:31,290 INFO L87 Difference]: Start difference. First operand 2866 states and 3808 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:31,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:31,449 INFO L93 Difference]: Finished difference Result 5560 states and 7429 transitions. [2024-10-31 22:05:31,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:31,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2024-10-31 22:05:31,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:31,458 INFO L225 Difference]: With dead ends: 5560 [2024-10-31 22:05:31,458 INFO L226 Difference]: Without dead ends: 2866 [2024-10-31 22:05:31,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:31,462 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 282 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:31,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 402 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:05:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2024-10-31 22:05:31,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2866. [2024-10-31 22:05:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2860 states have (on average 1.2961538461538462) internal successors, (3707), 2864 states have internal predecessors, (3707), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 3712 transitions. [2024-10-31 22:05:31,591 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 3712 transitions. Word has length 163 [2024-10-31 22:05:31,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:31,593 INFO L471 AbstractCegarLoop]: Abstraction has 2866 states and 3712 transitions. [2024-10-31 22:05:31,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 3712 transitions. [2024-10-31 22:05:31,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-31 22:05:31,596 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:31,596 INFO L215 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:31,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:05:31,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-31 22:05:31,798 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:31,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:31,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1156524976, now seen corresponding path program 1 times [2024-10-31 22:05:31,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:31,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081421215] [2024-10-31 22:05:31,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:31,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:05:31,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:31,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081421215] [2024-10-31 22:05:31,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081421215] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:31,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013860522] [2024-10-31 22:05:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:31,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:31,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:31,968 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:31,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:05:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:32,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:05:32,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:05:32,147 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:32,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013860522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:32,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:05:32,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-31 22:05:32,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843827028] [2024-10-31 22:05:32,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:32,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:32,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:32,150 INFO L87 Difference]: Start difference. First operand 2866 states and 3712 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:32,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:32,628 INFO L93 Difference]: Finished difference Result 6487 states and 8570 transitions. [2024-10-31 22:05:32,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:32,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-10-31 22:05:32,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:32,640 INFO L225 Difference]: With dead ends: 6487 [2024-10-31 22:05:32,640 INFO L226 Difference]: Without dead ends: 3793 [2024-10-31 22:05:32,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:32,645 INFO L432 NwaCegarLoop]: 457 mSDtfsCounter, 213 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:32,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 684 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:05:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2024-10-31 22:05:32,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3705. [2024-10-31 22:05:32,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 3699 states have (on average 1.2660178426601785) internal successors, (4683), 3703 states have internal predecessors, (4683), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:32,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 4688 transitions. [2024-10-31 22:05:32,818 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 4688 transitions. Word has length 164 [2024-10-31 22:05:32,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:32,819 INFO L471 AbstractCegarLoop]: Abstraction has 3705 states and 4688 transitions. [2024-10-31 22:05:32,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 4688 transitions. [2024-10-31 22:05:32,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-31 22:05:32,822 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:32,822 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:32,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:05:33,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:33,036 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:33,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:33,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1102689509, now seen corresponding path program 1 times [2024-10-31 22:05:33,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:33,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7983318] [2024-10-31 22:05:33,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:33,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:33,388 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:05:33,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:33,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7983318] [2024-10-31 22:05:33,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7983318] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:33,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060103811] [2024-10-31 22:05:33,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:33,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:33,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:33,391 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:33,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:05:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:33,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-31 22:05:33,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:05:33,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:05:33,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060103811] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:05:33,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:05:33,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-10-31 22:05:33,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846891503] [2024-10-31 22:05:33,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:05:33,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:05:33,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:33,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:05:33,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:05:33,986 INFO L87 Difference]: Start difference. First operand 3705 states and 4688 transitions. Second operand has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:34,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:34,687 INFO L93 Difference]: Finished difference Result 9953 states and 12608 transitions. [2024-10-31 22:05:34,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-31 22:05:34,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2024-10-31 22:05:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:34,702 INFO L225 Difference]: With dead ends: 9953 [2024-10-31 22:05:34,703 INFO L226 Difference]: Without dead ends: 6420 [2024-10-31 22:05:34,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-10-31 22:05:34,709 INFO L432 NwaCegarLoop]: 560 mSDtfsCounter, 931 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 3955 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:34,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 3955 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:05:34,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6420 states. [2024-10-31 22:05:34,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6420 to 5254. [2024-10-31 22:05:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5248 states have (on average 1.271341463414634) internal successors, (6672), 5252 states have internal predecessors, (6672), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 6677 transitions. [2024-10-31 22:05:34,959 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 6677 transitions. Word has length 166 [2024-10-31 22:05:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:34,960 INFO L471 AbstractCegarLoop]: Abstraction has 5254 states and 6677 transitions. [2024-10-31 22:05:34,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 6677 transitions. [2024-10-31 22:05:34,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-10-31 22:05:34,965 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:34,965 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2024-10-31 22:05:34,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:05:35,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:35,170 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:35,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:35,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1782230669, now seen corresponding path program 1 times [2024-10-31 22:05:35,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:35,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919298161] [2024-10-31 22:05:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:35,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 10 proven. 196 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 22:05:35,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:35,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919298161] [2024-10-31 22:05:35,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919298161] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:35,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62870624] [2024-10-31 22:05:35,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:35,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:35,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:35,698 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:35,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:05:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:35,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-31 22:05:35,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 10 proven. 196 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 22:05:36,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 10 proven. 196 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 22:05:36,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62870624] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:05:36,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:05:36,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 11 [2024-10-31 22:05:36,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576035098] [2024-10-31 22:05:36,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:05:36,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:05:36,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:36,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:05:36,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:05:36,767 INFO L87 Difference]: Start difference. First operand 5254 states and 6677 transitions. Second operand has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:37,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:37,841 INFO L93 Difference]: Finished difference Result 13646 states and 17272 transitions. [2024-10-31 22:05:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 22:05:37,842 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2024-10-31 22:05:37,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:37,863 INFO L225 Difference]: With dead ends: 13646 [2024-10-31 22:05:37,863 INFO L226 Difference]: Without dead ends: 8564 [2024-10-31 22:05:37,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-10-31 22:05:37,871 INFO L432 NwaCegarLoop]: 1048 mSDtfsCounter, 1563 mSDsluCounter, 7613 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 8661 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:37,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 8661 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:05:37,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8564 states. [2024-10-31 22:05:38,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8564 to 6677. [2024-10-31 22:05:38,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6677 states, 6671 states have (on average 1.272822665267576) internal successors, (8491), 6675 states have internal predecessors, (8491), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:38,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6677 states to 6677 states and 8496 transitions. [2024-10-31 22:05:38,307 INFO L78 Accepts]: Start accepts. Automaton has 6677 states and 8496 transitions. Word has length 266 [2024-10-31 22:05:38,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:38,308 INFO L471 AbstractCegarLoop]: Abstraction has 6677 states and 8496 transitions. [2024-10-31 22:05:38,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:38,308 INFO L276 IsEmpty]: Start isEmpty. Operand 6677 states and 8496 transitions. [2024-10-31 22:05:38,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-10-31 22:05:38,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:38,316 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-31 22:05:38,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-31 22:05:38,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-31 22:05:38,518 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:05:38,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:38,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1036581045, now seen corresponding path program 1 times [2024-10-31 22:05:38,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:38,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632307101] [2024-10-31 22:05:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:38,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 15 proven. 457 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-31 22:05:39,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:39,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632307101] [2024-10-31 22:05:39,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632307101] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:39,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066978521] [2024-10-31 22:05:39,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:39,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:39,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:39,401 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:39,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fb08d69-fa3a-4f11-81fa-ecfdc03c7366/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:05:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:39,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-31 22:05:39,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:40,224 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 15 proven. 457 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-31 22:05:40,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 15 proven. 457 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-31 22:05:40,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066978521] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:05:40,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:05:40,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2024-10-31 22:05:40,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770801633] [2024-10-31 22:05:40,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:05:40,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:05:40,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:40,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:05:40,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:05:40,955 INFO L87 Difference]: Start difference. First operand 6677 states and 8496 transitions. Second operand has 13 states, 13 states have (on average 27.615384615384617) internal successors, (359), 13 states have internal predecessors, (359), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)