./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX --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 43c551c05c986c34609f999e25a13e0dbb4f692e7b1d3b7f2939ec615c71d0d0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:19:51,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:19:51,151 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:19:51,164 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:19:51,165 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:19:51,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:19:51,215 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:19:51,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:19:51,217 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:19:51,218 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:19:51,219 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:19:51,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:19:51,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:19:51,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:19:51,221 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:19:51,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:19:51,223 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:19:51,224 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:19:51,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:19:51,225 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:19:51,225 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:19:51,229 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:19:51,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:19:51,230 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:19:51,231 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:19:51,231 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:19:51,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:19:51,232 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:19:51,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:19:51,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:19:51,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:19:51,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:19:51,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:19:51,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:19:51,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:19:51,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:19:51,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:19:51,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:19:51,238 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:19:51,240 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:19:51,240 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:19:51,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:19:51,241 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_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c551c05c986c34609f999e25a13e0dbb4f692e7b1d3b7f2939ec615c71d0d0 [2024-11-08 18:19:51,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:19:51,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:19:51,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:19:51,627 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:19:51,627 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:19:51,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i Unable to find full path for "g++" [2024-11-08 18:19:53,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:19:54,452 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:19:54,455 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i [2024-11-08 18:19:54,484 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/data/980d72f52/9321eb4886444b95bb695d8fd0adf93a/FLAG341351741 [2024-11-08 18:19:54,499 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/data/980d72f52/9321eb4886444b95bb695d8fd0adf93a [2024-11-08 18:19:54,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:19:54,504 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:19:54,505 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:19:54,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:19:54,514 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:19:54,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:19:54" (1/1) ... [2024-11-08 18:19:54,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a3d289a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:54, skipping insertion in model container [2024-11-08 18:19:54,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:19:54" (1/1) ... [2024-11-08 18:19:54,613 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:19:55,293 WARN L250 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_bc8b4f91-31bf-49fc-9036-d19dcf46b402/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i[33022,33035] [2024-11-08 18:19:55,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:19:55,624 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:19:55,664 WARN L250 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_bc8b4f91-31bf-49fc-9036-d19dcf46b402/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i[33022,33035] [2024-11-08 18:19:55,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:19:55,966 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:19:55,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:55 WrapperNode [2024-11-08 18:19:55,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:19:55,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:19:55,969 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:19:55,969 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:19:55,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:55" (1/1) ... [2024-11-08 18:19:56,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:55" (1/1) ... [2024-11-08 18:19:56,175 INFO L138 Inliner]: procedures = 177, calls = 506, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3329 [2024-11-08 18:19:56,176 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:19:56,177 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:19:56,177 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:19:56,177 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:19:56,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:55" (1/1) ... [2024-11-08 18:19:56,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:55" (1/1) ... [2024-11-08 18:19:56,214 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:55" (1/1) ... [2024-11-08 18:19:56,442 INFO L175 MemorySlicer]: Split 480 memory accesses to 3 slices as follows [2, 106, 372]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 86 writes are split as follows [0, 4, 82]. [2024-11-08 18:19:56,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:55" (1/1) ... [2024-11-08 18:19:56,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:55" (1/1) ... [2024-11-08 18:19:56,528 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:55" (1/1) ... [2024-11-08 18:19:56,559 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:55" (1/1) ... [2024-11-08 18:19:56,567 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:55" (1/1) ... [2024-11-08 18:19:56,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:55" (1/1) ... [2024-11-08 18:19:56,633 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:19:56,634 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:19:56,634 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:19:56,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:19:56,635 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:55" (1/1) ... [2024-11-08 18:19:56,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:19:56,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:56,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:19:56,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:19:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-08 18:19:56,746 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-08 18:19:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:19:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:19:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 18:19:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 18:19:56,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 18:19:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:19:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:19:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 18:19:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-08 18:19:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-08 18:19:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-08 18:19:56,749 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-08 18:19:56,749 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-08 18:19:56,749 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-08 18:19:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 18:19:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:19:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 18:19:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 18:19:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 18:19:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 18:19:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 18:19:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 18:19:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 18:19:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 18:19:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:19:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:19:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 18:19:56,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:19:56,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:19:57,249 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:19:57,252 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:20:01,614 INFO L? ?]: Removed 784 outVars from TransFormulas that were not future-live. [2024-11-08 18:20:01,614 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:20:01,692 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:20:01,692 INFO L316 CfgBuilder]: Removed 139 assume(true) statements. [2024-11-08 18:20:01,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:20:01 BoogieIcfgContainer [2024-11-08 18:20:01,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:20:01,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:20:01,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:20:01,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:20:01,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:19:54" (1/3) ... [2024-11-08 18:20:01,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7b2037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:20:01, skipping insertion in model container [2024-11-08 18:20:01,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:55" (2/3) ... [2024-11-08 18:20:01,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7b2037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:20:01, skipping insertion in model container [2024-11-08 18:20:01,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:20:01" (3/3) ... [2024-11-08 18:20:01,714 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-1.i [2024-11-08 18:20:01,731 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:20:01,732 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:20:01,880 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:20:01,890 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;@5a7908cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:20:01,890 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:20:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 1042 states, 1023 states have (on average 1.6207233626588464) internal successors, (1658), 1028 states have internal predecessors, (1658), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-08 18:20:01,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 18:20:01,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:01,919 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:01,920 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:01,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:01,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1214958655, now seen corresponding path program 1 times [2024-11-08 18:20:01,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:01,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406640665] [2024-11-08 18:20:01,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:01,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:02,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:02,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406640665] [2024-11-08 18:20:02,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406640665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:02,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:02,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:20:02,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712386957] [2024-11-08 18:20:02,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:02,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 18:20:02,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:02,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 18:20:02,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:20:02,296 INFO L87 Difference]: Start difference. First operand has 1042 states, 1023 states have (on average 1.6207233626588464) internal successors, (1658), 1028 states have internal predecessors, (1658), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:02,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:02,455 INFO L93 Difference]: Finished difference Result 2082 states and 3378 transitions. [2024-11-08 18:20:02,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 18:20:02,458 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-08 18:20:02,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:02,495 INFO L225 Difference]: With dead ends: 2082 [2024-11-08 18:20:02,497 INFO L226 Difference]: Without dead ends: 1038 [2024-11-08 18:20:02,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:20:02,518 INFO L432 NwaCegarLoop]: 1539 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:02,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:20:02,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2024-11-08 18:20:02,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1038. [2024-11-08 18:20:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1020 states have (on average 1.4784313725490197) internal successors, (1508), 1025 states have internal predecessors, (1508), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-08 18:20:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1535 transitions. [2024-11-08 18:20:02,680 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1535 transitions. Word has length 13 [2024-11-08 18:20:02,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:02,682 INFO L471 AbstractCegarLoop]: Abstraction has 1038 states and 1535 transitions. [2024-11-08 18:20:02,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1535 transitions. [2024-11-08 18:20:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 18:20:02,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:02,746 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] [2024-11-08 18:20:02,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:20:02,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:02,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:02,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1795031996, now seen corresponding path program 1 times [2024-11-08 18:20:02,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:02,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93887847] [2024-11-08 18:20:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:02,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:03,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:03,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93887847] [2024-11-08 18:20:03,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93887847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:03,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:03,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:20:03,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867802389] [2024-11-08 18:20:03,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:03,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:20:03,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:03,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:20:03,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:20:03,567 INFO L87 Difference]: Start difference. First operand 1038 states and 1535 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:03,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:03,890 INFO L93 Difference]: Finished difference Result 2070 states and 3064 transitions. [2024-11-08 18:20:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:20:03,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-08 18:20:03,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:03,905 INFO L225 Difference]: With dead ends: 2070 [2024-11-08 18:20:03,906 INFO L226 Difference]: Without dead ends: 1428 [2024-11-08 18:20:03,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:20:03,912 INFO L432 NwaCegarLoop]: 1621 mSDtfsCounter, 556 mSDsluCounter, 3086 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 4707 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:03,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 4707 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:20:03,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2024-11-08 18:20:03,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1040. [2024-11-08 18:20:03,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1022 states have (on average 1.477495107632094) internal successors, (1510), 1027 states have internal predecessors, (1510), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-08 18:20:03,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1537 transitions. [2024-11-08 18:20:03,967 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1537 transitions. Word has length 68 [2024-11-08 18:20:03,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:03,967 INFO L471 AbstractCegarLoop]: Abstraction has 1040 states and 1537 transitions. [2024-11-08 18:20:03,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:03,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1537 transitions. [2024-11-08 18:20:03,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-08 18:20:03,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:03,977 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:03,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:20:03,978 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:03,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:03,982 INFO L85 PathProgramCache]: Analyzing trace with hash -495659350, now seen corresponding path program 1 times [2024-11-08 18:20:03,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:03,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276218912] [2024-11-08 18:20:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:03,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:05,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:05,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:05,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276218912] [2024-11-08 18:20:05,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276218912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:05,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:05,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:20:05,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294844119] [2024-11-08 18:20:05,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:05,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:20:05,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:05,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:20:05,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:20:05,095 INFO L87 Difference]: Start difference. First operand 1040 states and 1537 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:05,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:05,512 INFO L93 Difference]: Finished difference Result 2464 states and 3637 transitions. [2024-11-08 18:20:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:20:05,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-08 18:20:05,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:05,521 INFO L225 Difference]: With dead ends: 2464 [2024-11-08 18:20:05,521 INFO L226 Difference]: Without dead ends: 1428 [2024-11-08 18:20:05,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:20:05,526 INFO L432 NwaCegarLoop]: 1624 mSDtfsCounter, 554 mSDsluCounter, 5107 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 6731 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:05,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 6731 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:20:05,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2024-11-08 18:20:05,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1043. [2024-11-08 18:20:05,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1025 states have (on average 1.4760975609756097) internal successors, (1513), 1030 states have internal predecessors, (1513), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-08 18:20:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1540 transitions. [2024-11-08 18:20:05,570 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1540 transitions. Word has length 145 [2024-11-08 18:20:05,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:05,571 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1540 transitions. [2024-11-08 18:20:05,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:05,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1540 transitions. [2024-11-08 18:20:05,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-08 18:20:05,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:05,576 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:05,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:20:05,577 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:05,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:05,578 INFO L85 PathProgramCache]: Analyzing trace with hash 639037487, now seen corresponding path program 1 times [2024-11-08 18:20:05,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:05,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427289884] [2024-11-08 18:20:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:05,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:06,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:06,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427289884] [2024-11-08 18:20:06,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427289884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:06,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:06,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:20:06,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21462103] [2024-11-08 18:20:06,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:06,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:20:06,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:06,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:20:06,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:20:06,245 INFO L87 Difference]: Start difference. First operand 1043 states and 1540 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:06,394 INFO L93 Difference]: Finished difference Result 2036 states and 3005 transitions. [2024-11-08 18:20:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:20:06,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-08 18:20:06,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:06,400 INFO L225 Difference]: With dead ends: 2036 [2024-11-08 18:20:06,400 INFO L226 Difference]: Without dead ends: 1000 [2024-11-08 18:20:06,402 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 [2024-11-08 18:20:06,404 INFO L432 NwaCegarLoop]: 1431 mSDtfsCounter, 30 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4274 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:06,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4274 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:20:06,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2024-11-08 18:20:06,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 1000. [2024-11-08 18:20:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 982 states have (on average 1.460285132382892) internal successors, (1434), 987 states have internal predecessors, (1434), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-08 18:20:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1461 transitions. [2024-11-08 18:20:06,433 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1461 transitions. Word has length 216 [2024-11-08 18:20:06,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:06,434 INFO L471 AbstractCegarLoop]: Abstraction has 1000 states and 1461 transitions. [2024-11-08 18:20:06,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1461 transitions. [2024-11-08 18:20:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-08 18:20:06,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:06,439 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:06,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:20:06,439 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:06,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:06,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1890271267, now seen corresponding path program 1 times [2024-11-08 18:20:06,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:06,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168688746] [2024-11-08 18:20:06,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:06,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:06,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:06,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168688746] [2024-11-08 18:20:06,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168688746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:06,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:06,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:20:06,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519218552] [2024-11-08 18:20:06,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:06,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:20:06,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:06,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:20:06,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:20:06,931 INFO L87 Difference]: Start difference. First operand 1000 states and 1461 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:07,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:07,106 INFO L93 Difference]: Finished difference Result 2529 states and 3708 transitions. [2024-11-08 18:20:07,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:20:07,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-08 18:20:07,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:07,116 INFO L225 Difference]: With dead ends: 2529 [2024-11-08 18:20:07,117 INFO L226 Difference]: Without dead ends: 1536 [2024-11-08 18:20:07,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:20:07,121 INFO L432 NwaCegarLoop]: 1448 mSDtfsCounter, 726 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:07,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 2878 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:20:07,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2024-11-08 18:20:07,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1375. [2024-11-08 18:20:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1355 states have (on average 1.462730627306273) internal successors, (1982), 1360 states have internal predecessors, (1982), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-08 18:20:07,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 2013 transitions. [2024-11-08 18:20:07,171 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 2013 transitions. Word has length 216 [2024-11-08 18:20:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:07,172 INFO L471 AbstractCegarLoop]: Abstraction has 1375 states and 2013 transitions. [2024-11-08 18:20:07,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 2013 transitions. [2024-11-08 18:20:07,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-08 18:20:07,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:07,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:07,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:20:07,179 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:07,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:07,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1833875196, now seen corresponding path program 1 times [2024-11-08 18:20:07,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:07,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117034031] [2024-11-08 18:20:07,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:07,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:07,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:20:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:07,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:20:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:20:07,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:07,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117034031] [2024-11-08 18:20:07,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117034031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:07,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:07,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:20:07,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784706329] [2024-11-08 18:20:07,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:07,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:20:07,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:07,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:20:07,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:20:07,984 INFO L87 Difference]: Start difference. First operand 1375 states and 2013 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 18:20:09,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:09,141 INFO L93 Difference]: Finished difference Result 2618 states and 3844 transitions. [2024-11-08 18:20:09,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:20:09,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-08 18:20:09,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:09,150 INFO L225 Difference]: With dead ends: 2618 [2024-11-08 18:20:09,150 INFO L226 Difference]: Without dead ends: 1335 [2024-11-08 18:20:09,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:20:09,153 INFO L432 NwaCegarLoop]: 1318 mSDtfsCounter, 59 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 5125 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:09,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 5125 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 18:20:09,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2024-11-08 18:20:09,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1332. [2024-11-08 18:20:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1312 states have (on average 1.4504573170731707) internal successors, (1903), 1317 states have internal predecessors, (1903), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-08 18:20:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1934 transitions. [2024-11-08 18:20:09,199 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1934 transitions. Word has length 231 [2024-11-08 18:20:09,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:09,200 INFO L471 AbstractCegarLoop]: Abstraction has 1332 states and 1934 transitions. [2024-11-08 18:20:09,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 18:20:09,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1934 transitions. [2024-11-08 18:20:09,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-08 18:20:09,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:09,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:09,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:20:09,206 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:09,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:09,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1447697136, now seen corresponding path program 1 times [2024-11-08 18:20:09,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:09,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771663721] [2024-11-08 18:20:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:09,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:09,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:20:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:09,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:20:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:20:09,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:09,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771663721] [2024-11-08 18:20:09,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771663721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:09,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:09,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:20:09,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240914092] [2024-11-08 18:20:09,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:09,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:20:09,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:09,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:20:09,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:20:09,836 INFO L87 Difference]: Start difference. First operand 1332 states and 1934 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 18:20:10,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:10,684 INFO L93 Difference]: Finished difference Result 2569 states and 3748 transitions. [2024-11-08 18:20:10,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:20:10,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-08 18:20:10,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:10,691 INFO L225 Difference]: With dead ends: 2569 [2024-11-08 18:20:10,691 INFO L226 Difference]: Without dead ends: 1329 [2024-11-08 18:20:10,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:20:10,694 INFO L432 NwaCegarLoop]: 1320 mSDtfsCounter, 32 mSDsluCounter, 3812 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 5132 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:10,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 5132 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:20:10,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2024-11-08 18:20:10,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1326. [2024-11-08 18:20:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1306 states have (on average 1.4494640122511486) internal successors, (1893), 1311 states have internal predecessors, (1893), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-08 18:20:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1924 transitions. [2024-11-08 18:20:10,732 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1924 transitions. Word has length 231 [2024-11-08 18:20:10,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:10,733 INFO L471 AbstractCegarLoop]: Abstraction has 1326 states and 1924 transitions. [2024-11-08 18:20:10,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 18:20:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1924 transitions. [2024-11-08 18:20:10,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-08 18:20:10,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:10,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:10,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:20:10,737 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:10,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:10,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2099599352, now seen corresponding path program 1 times [2024-11-08 18:20:10,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:10,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490399901] [2024-11-08 18:20:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:10,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:11,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:20:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:11,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:20:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:20:11,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:11,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490399901] [2024-11-08 18:20:11,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490399901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:11,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:11,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:20:11,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383363672] [2024-11-08 18:20:11,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:11,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:20:11,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:11,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:20:11,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:20:11,187 INFO L87 Difference]: Start difference. First operand 1326 states and 1924 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 18:20:11,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:11,956 INFO L93 Difference]: Finished difference Result 3133 states and 4571 transitions. [2024-11-08 18:20:11,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:20:11,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-08 18:20:11,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:11,965 INFO L225 Difference]: With dead ends: 3133 [2024-11-08 18:20:11,966 INFO L226 Difference]: Without dead ends: 1899 [2024-11-08 18:20:11,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:20:11,969 INFO L432 NwaCegarLoop]: 1568 mSDtfsCounter, 624 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 4314 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:11,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 4314 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:20:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2024-11-08 18:20:12,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1891. [2024-11-08 18:20:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1865 states have (on average 1.4520107238605897) internal successors, (2708), 1870 states have internal predecessors, (2708), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-08 18:20:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2751 transitions. [2024-11-08 18:20:12,028 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2751 transitions. Word has length 231 [2024-11-08 18:20:12,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:12,029 INFO L471 AbstractCegarLoop]: Abstraction has 1891 states and 2751 transitions. [2024-11-08 18:20:12,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 18:20:12,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2751 transitions. [2024-11-08 18:20:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-08 18:20:12,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:12,035 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:12,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:20:12,035 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:12,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:12,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1713824384, now seen corresponding path program 1 times [2024-11-08 18:20:12,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:12,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143204457] [2024-11-08 18:20:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:12,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:12,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:20:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:12,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:20:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:12,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-08 18:20:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:12,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-08 18:20:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:12,656 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 18:20:12,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:12,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143204457] [2024-11-08 18:20:12,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143204457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:12,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:12,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:20:12,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667095482] [2024-11-08 18:20:12,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:12,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:20:12,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:12,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:20:12,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:20:12,660 INFO L87 Difference]: Start difference. First operand 1891 states and 2751 transitions. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 18:20:14,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:14,224 INFO L93 Difference]: Finished difference Result 4098 states and 6012 transitions. [2024-11-08 18:20:14,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:20:14,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 246 [2024-11-08 18:20:14,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:14,243 INFO L225 Difference]: With dead ends: 4098 [2024-11-08 18:20:14,243 INFO L226 Difference]: Without dead ends: 2440 [2024-11-08 18:20:14,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:20:14,249 INFO L432 NwaCegarLoop]: 1374 mSDtfsCounter, 5740 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5751 SdHoareTripleChecker+Valid, 4060 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:14,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5751 Valid, 4060 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 18:20:14,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2024-11-08 18:20:14,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 1458. [2024-11-08 18:20:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1437 states have (on average 1.4370215727209463) internal successors, (2065), 1442 states have internal predecessors, (2065), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-08 18:20:14,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 2098 transitions. [2024-11-08 18:20:14,358 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 2098 transitions. Word has length 246 [2024-11-08 18:20:14,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:14,359 INFO L471 AbstractCegarLoop]: Abstraction has 1458 states and 2098 transitions. [2024-11-08 18:20:14,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 18:20:14,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 2098 transitions. [2024-11-08 18:20:14,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-08 18:20:14,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:14,366 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:14,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:20:14,366 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:14,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:14,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1960967467, now seen corresponding path program 1 times [2024-11-08 18:20:14,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:14,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685145092] [2024-11-08 18:20:14,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:14,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:15,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:20:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:15,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:20:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:15,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-08 18:20:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:15,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-08 18:20:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 18:20:15,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:15,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685145092] [2024-11-08 18:20:15,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685145092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:15,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:15,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:20:15,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368119842] [2024-11-08 18:20:15,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:15,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:20:15,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:15,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:20:15,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:20:15,124 INFO L87 Difference]: Start difference. First operand 1458 states and 2098 transitions. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:20:16,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:16,077 INFO L93 Difference]: Finished difference Result 2346 states and 3428 transitions. [2024-11-08 18:20:16,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:20:16,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 256 [2024-11-08 18:20:16,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:16,085 INFO L225 Difference]: With dead ends: 2346 [2024-11-08 18:20:16,086 INFO L226 Difference]: Without dead ends: 1418 [2024-11-08 18:20:16,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:20:16,089 INFO L432 NwaCegarLoop]: 1230 mSDtfsCounter, 53 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 4768 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:16,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 4768 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:20:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2024-11-08 18:20:16,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1415. [2024-11-08 18:20:16,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1394 states have (on average 1.42467718794835) internal successors, (1986), 1399 states have internal predecessors, (1986), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-08 18:20:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2019 transitions. [2024-11-08 18:20:16,159 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2019 transitions. Word has length 256 [2024-11-08 18:20:16,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:16,160 INFO L471 AbstractCegarLoop]: Abstraction has 1415 states and 2019 transitions. [2024-11-08 18:20:16,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:20:16,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2019 transitions. [2024-11-08 18:20:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-08 18:20:16,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:16,166 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:16,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:20:16,167 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:16,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:16,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1244649057, now seen corresponding path program 1 times [2024-11-08 18:20:16,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:16,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298551321] [2024-11-08 18:20:16,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:16,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:17,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:20:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:17,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:20:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:17,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-08 18:20:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:17,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-08 18:20:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 18:20:17,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:17,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298551321] [2024-11-08 18:20:17,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298551321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:20:17,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945377729] [2024-11-08 18:20:17,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:17,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:17,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:20:17,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:20:17,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:20:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:18,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 18:20:18,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:20:19,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:20:19,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 18:20:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 18:20:19,664 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:20:19,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945377729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:19,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:20:19,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-08 18:20:19,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994787029] [2024-11-08 18:20:19,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:19,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:20:19,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:19,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:20:19,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:20:19,667 INFO L87 Difference]: Start difference. First operand 1415 states and 2019 transitions. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:20:20,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:20,345 INFO L93 Difference]: Finished difference Result 2619 states and 3753 transitions. [2024-11-08 18:20:20,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:20:20,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 256 [2024-11-08 18:20:20,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:20,353 INFO L225 Difference]: With dead ends: 2619 [2024-11-08 18:20:20,353 INFO L226 Difference]: Without dead ends: 1730 [2024-11-08 18:20:20,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 252 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:20:20,356 INFO L432 NwaCegarLoop]: 1214 mSDtfsCounter, 1884 mSDsluCounter, 3938 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 5152 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:20,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 5152 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:20:20,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2024-11-08 18:20:20,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1581. [2024-11-08 18:20:20,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1550 states have (on average 1.415483870967742) internal successors, (2194), 1559 states have internal predecessors, (2194), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (23), 17 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-08 18:20:20,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2241 transitions. [2024-11-08 18:20:20,436 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2241 transitions. Word has length 256 [2024-11-08 18:20:20,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:20,437 INFO L471 AbstractCegarLoop]: Abstraction has 1581 states and 2241 transitions. [2024-11-08 18:20:20,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:20:20,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2241 transitions. [2024-11-08 18:20:20,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-08 18:20:20,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:20,444 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:20,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 18:20:20,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 18:20:20,649 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:20,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:20,650 INFO L85 PathProgramCache]: Analyzing trace with hash -337161711, now seen corresponding path program 1 times [2024-11-08 18:20:20,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:20,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264254045] [2024-11-08 18:20:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:20,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:22,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:20:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:22,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:20:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:22,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-08 18:20:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:22,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-08 18:20:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 18:20:22,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264254045] [2024-11-08 18:20:22,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264254045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:20:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400955659] [2024-11-08 18:20:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:22,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:22,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:20:22,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:20:22,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:20:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:24,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 18:20:24,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:20:24,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:20:24,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:20:24,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 18:20:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 18:20:24,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:20:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 18:20:25,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400955659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:20:25,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:20:25,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 13 [2024-11-08 18:20:25,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256553348] [2024-11-08 18:20:25,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:20:25,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 18:20:25,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:25,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 18:20:25,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:20:25,286 INFO L87 Difference]: Start difference. First operand 1581 states and 2241 transitions. Second operand has 13 states, 13 states have (on average 37.46153846153846) internal successors, (487), 12 states have internal predecessors, (487), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 18:20:27,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:27,031 INFO L93 Difference]: Finished difference Result 3872 states and 5459 transitions. [2024-11-08 18:20:27,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:20:27,034 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 37.46153846153846) internal successors, (487), 12 states have internal predecessors, (487), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 333 [2024-11-08 18:20:27,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:27,046 INFO L225 Difference]: With dead ends: 3872 [2024-11-08 18:20:27,046 INFO L226 Difference]: Without dead ends: 2524 [2024-11-08 18:20:27,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 663 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-11-08 18:20:27,050 INFO L432 NwaCegarLoop]: 1217 mSDtfsCounter, 2141 mSDsluCounter, 9167 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 10384 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:27,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2179 Valid, 10384 Invalid, 733 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 18:20:27,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2524 states. [2024-11-08 18:20:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2524 to 2231. [2024-11-08 18:20:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2188 states have (on average 1.389853747714808) internal successors, (3041), 2197 states have internal predecessors, (3041), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (34), 28 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-08 18:20:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 3110 transitions. [2024-11-08 18:20:27,179 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 3110 transitions. Word has length 333 [2024-11-08 18:20:27,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:27,179 INFO L471 AbstractCegarLoop]: Abstraction has 2231 states and 3110 transitions. [2024-11-08 18:20:27,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.46153846153846) internal successors, (487), 12 states have internal predecessors, (487), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 18:20:27,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 3110 transitions. [2024-11-08 18:20:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2024-11-08 18:20:27,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:27,209 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:27,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 18:20:27,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:27,414 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:27,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:27,415 INFO L85 PathProgramCache]: Analyzing trace with hash -29580776, now seen corresponding path program 1 times [2024-11-08 18:20:27,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:27,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525471368] [2024-11-08 18:20:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:27,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:37,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:20:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:37,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:20:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:37,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-08 18:20:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:37,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-08 18:20:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 18:20:37,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525471368] [2024-11-08 18:20:37,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525471368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:20:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316630954] [2024-11-08 18:20:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:37,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:37,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:20:37,734 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:20:37,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:20:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:39,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 3736 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 18:20:39,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:20:39,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:20:40,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:20:40,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:20:40,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:20:41,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:20:41,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 18:20:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 18:20:41,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:20:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 18:20:42,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316630954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:20:42,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:20:42,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 8] total 22 [2024-11-08 18:20:42,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915618819] [2024-11-08 18:20:42,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:20:42,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 18:20:42,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:42,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 18:20:42,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-11-08 18:20:42,558 INFO L87 Difference]: Start difference. First operand 2231 states and 3110 transitions. Second operand has 22 states, 22 states have (on average 62.77272727272727) internal successors, (1381), 21 states have internal predecessors, (1381), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 18:20:44,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:44,774 INFO L93 Difference]: Finished difference Result 5606 states and 7814 transitions. [2024-11-08 18:20:44,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 18:20:44,776 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 62.77272727272727) internal successors, (1381), 21 states have internal predecessors, (1381), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 777 [2024-11-08 18:20:44,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:44,793 INFO L225 Difference]: With dead ends: 5606 [2024-11-08 18:20:44,793 INFO L226 Difference]: Without dead ends: 4258 [2024-11-08 18:20:44,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1587 GetRequests, 1549 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=292, Invalid=764, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 18:20:44,798 INFO L432 NwaCegarLoop]: 1217 mSDtfsCounter, 5612 mSDsluCounter, 13441 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5698 SdHoareTripleChecker+Valid, 14658 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:44,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5698 Valid, 14658 Invalid, 1044 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 18:20:44,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4258 states. [2024-11-08 18:20:44,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4258 to 3965. [2024-11-08 18:20:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3965 states, 3898 states have (on average 1.3650590046177526) internal successors, (5321), 3907 states have internal predecessors, (5321), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-08 18:20:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 5438 transitions. [2024-11-08 18:20:44,964 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 5438 transitions. Word has length 777 [2024-11-08 18:20:44,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:44,965 INFO L471 AbstractCegarLoop]: Abstraction has 3965 states and 5438 transitions. [2024-11-08 18:20:44,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 62.77272727272727) internal successors, (1381), 21 states have internal predecessors, (1381), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 18:20:44,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 5438 transitions. [2024-11-08 18:20:45,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2024-11-08 18:20:45,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:45,088 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:45,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 18:20:45,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:45,289 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:45,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:45,290 INFO L85 PathProgramCache]: Analyzing trace with hash 253508774, now seen corresponding path program 2 times [2024-11-08 18:20:45,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:45,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472257907] [2024-11-08 18:20:45,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:45,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:54,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:20:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:54,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:20:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:54,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-08 18:20:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:54,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-08 18:20:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 2015 proven. 76 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-08 18:20:54,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:54,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472257907] [2024-11-08 18:20:54,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472257907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:20:54,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749111194] [2024-11-08 18:20:54,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:20:54,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:54,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:20:54,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:20:54,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:20:55,770 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 18:20:55,771 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:20:55,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 18:20:55,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:20:55,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 18:20:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7438 trivial. 0 not checked. [2024-11-08 18:20:56,764 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:20:56,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749111194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:56,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:20:56,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-11-08 18:20:56,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526358955] [2024-11-08 18:20:56,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:56,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:20:56,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:20:56,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-08 18:20:56,770 INFO L87 Difference]: Start difference. First operand 3965 states and 5438 transitions. Second operand has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:20:58,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:58,309 INFO L93 Difference]: Finished difference Result 4849 states and 6749 transitions. [2024-11-08 18:20:58,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:20:58,310 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1665 [2024-11-08 18:20:58,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:58,327 INFO L225 Difference]: With dead ends: 4849 [2024-11-08 18:20:58,328 INFO L226 Difference]: Without dead ends: 3983 [2024-11-08 18:20:58,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1689 GetRequests, 1666 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-11-08 18:20:58,331 INFO L432 NwaCegarLoop]: 1262 mSDtfsCounter, 408 mSDsluCounter, 6662 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 7924 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:58,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 7924 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 18:20:58,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2024-11-08 18:20:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3968. [2024-11-08 18:20:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3901 states have (on average 1.3647782619841067) internal successors, (5324), 3910 states have internal predecessors, (5324), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-08 18:20:58,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5441 transitions. [2024-11-08 18:20:58,474 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5441 transitions. Word has length 1665 [2024-11-08 18:20:58,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:58,476 INFO L471 AbstractCegarLoop]: Abstraction has 3968 states and 5441 transitions. [2024-11-08 18:20:58,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:20:58,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5441 transitions. [2024-11-08 18:20:58,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2024-11-08 18:20:58,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:58,590 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:58,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:20:58,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 18:20:58,793 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:58,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:58,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2102296476, now seen corresponding path program 1 times [2024-11-08 18:20:58,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:58,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56595715] [2024-11-08 18:20:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:58,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:01,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:21:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:01,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:21:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:01,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-08 18:21:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:01,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-08 18:21:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7438 trivial. 0 not checked. [2024-11-08 18:21:01,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:21:01,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56595715] [2024-11-08 18:21:01,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56595715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:21:01,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:21:01,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:21:01,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761308943] [2024-11-08 18:21:01,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:21:01,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:21:01,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:21:01,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:21:01,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:21:01,440 INFO L87 Difference]: Start difference. First operand 3968 states and 5441 transitions. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:21:02,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:21:02,081 INFO L93 Difference]: Finished difference Result 4853 states and 6798 transitions. [2024-11-08 18:21:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:21:02,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1665 [2024-11-08 18:21:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:21:02,099 INFO L225 Difference]: With dead ends: 4853 [2024-11-08 18:21:02,099 INFO L226 Difference]: Without dead ends: 3977 [2024-11-08 18:21:02,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:21:02,104 INFO L432 NwaCegarLoop]: 1243 mSDtfsCounter, 24 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:21:02,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3577 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:21:02,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2024-11-08 18:21:02,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3968. [2024-11-08 18:21:02,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3901 states have (on average 1.3640092284029737) internal successors, (5321), 3910 states have internal predecessors, (5321), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-08 18:21:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5438 transitions. [2024-11-08 18:21:02,244 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5438 transitions. Word has length 1665 [2024-11-08 18:21:02,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:21:02,246 INFO L471 AbstractCegarLoop]: Abstraction has 3968 states and 5438 transitions. [2024-11-08 18:21:02,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:21:02,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5438 transitions. [2024-11-08 18:21:02,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2024-11-08 18:21:02,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:21:02,272 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:21:02,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:21:02,273 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:21:02,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:21:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash -169017698, now seen corresponding path program 1 times [2024-11-08 18:21:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:21:02,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603924025] [2024-11-08 18:21:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:21:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:21:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:05,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:21:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:05,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:21:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:05,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-08 18:21:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:05,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-08 18:21:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7438 trivial. 0 not checked. [2024-11-08 18:21:05,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:21:05,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603924025] [2024-11-08 18:21:05,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603924025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:21:05,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:21:05,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:21:05,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105260848] [2024-11-08 18:21:05,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:21:05,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:21:05,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:21:05,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:21:05,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:21:05,530 INFO L87 Difference]: Start difference. First operand 3968 states and 5438 transitions. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:21:06,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:21:06,222 INFO L93 Difference]: Finished difference Result 4846 states and 6787 transitions. [2024-11-08 18:21:06,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:21:06,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1665 [2024-11-08 18:21:06,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:21:06,237 INFO L225 Difference]: With dead ends: 4846 [2024-11-08 18:21:06,237 INFO L226 Difference]: Without dead ends: 3968 [2024-11-08 18:21:06,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:21:06,240 INFO L432 NwaCegarLoop]: 1228 mSDtfsCounter, 32 mSDsluCounter, 3532 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 4760 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:21:06,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 4760 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 18:21:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2024-11-08 18:21:06,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3959. [2024-11-08 18:21:06,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3959 states, 3892 states have (on average 1.3643371017471737) internal successors, (5310), 3901 states have internal predecessors, (5310), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-08 18:21:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3959 states to 3959 states and 5427 transitions. [2024-11-08 18:21:06,386 INFO L78 Accepts]: Start accepts. Automaton has 3959 states and 5427 transitions. Word has length 1665 [2024-11-08 18:21:06,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:21:06,389 INFO L471 AbstractCegarLoop]: Abstraction has 3959 states and 5427 transitions. [2024-11-08 18:21:06,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:21:06,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3959 states and 5427 transitions. [2024-11-08 18:21:06,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1667 [2024-11-08 18:21:06,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:21:06,417 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:21:06,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 18:21:06,417 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:21:06,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:21:06,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1861928177, now seen corresponding path program 1 times [2024-11-08 18:21:06,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:21:06,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387111020] [2024-11-08 18:21:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:21:06,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:21:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:15,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:21:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:15,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:21:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:15,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-08 18:21:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:15,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-08 18:21:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 2015 proven. 76 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-08 18:21:15,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:21:15,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387111020] [2024-11-08 18:21:15,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387111020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:21:15,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224765983] [2024-11-08 18:21:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:21:15,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:21:15,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:21:15,678 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:21:15,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:21:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:19,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 7937 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-08 18:21:19,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:21:19,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:21:20,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:21:20,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:21:20,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:21:20,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:21:21,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:21:21,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:21:21,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:21:21,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:21:22,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:21:22,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-08 18:21:22,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 18:21:22,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 42 proven. 7372 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 18:21:22,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:21:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 42 proven. 7372 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 18:21:25,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224765983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:21:25,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:21:25,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 16] total 35 [2024-11-08 18:21:25,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928236385] [2024-11-08 18:21:25,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:21:25,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 18:21:25,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:21:25,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 18:21:25,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=801, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:21:25,635 INFO L87 Difference]: Start difference. First operand 3959 states and 5427 transitions. Second operand has 35 states, 35 states have (on average 96.88571428571429) internal successors, (3391), 34 states have internal predecessors, (3391), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-08 18:21:29,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:21:29,075 INFO L93 Difference]: Finished difference Result 8147 states and 11273 transitions. [2024-11-08 18:21:29,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-08 18:21:29,077 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 96.88571428571429) internal successors, (3391), 34 states have internal predecessors, (3391), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1666 [2024-11-08 18:21:29,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:21:29,096 INFO L225 Difference]: With dead ends: 8147 [2024-11-08 18:21:29,097 INFO L226 Difference]: Without dead ends: 7248 [2024-11-08 18:21:29,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3397 GetRequests, 3309 SyntacticMatches, 7 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1463 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1737, Invalid=5069, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 18:21:29,101 INFO L432 NwaCegarLoop]: 1180 mSDtfsCounter, 15197 mSDsluCounter, 12139 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15342 SdHoareTripleChecker+Valid, 13319 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:21:29,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15342 Valid, 13319 Invalid, 1255 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [205 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 18:21:29,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7248 states. [2024-11-08 18:21:29,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7248 to 7237. [2024-11-08 18:21:29,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7237 states, 7104 states have (on average 1.3451576576576576) internal successors, (9556), 7113 states have internal predecessors, (9556), 125 states have call successors, (125), 7 states have call predecessors, (125), 7 states have return successors, (124), 118 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-08 18:21:29,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7237 states to 7237 states and 9805 transitions. [2024-11-08 18:21:29,327 INFO L78 Accepts]: Start accepts. Automaton has 7237 states and 9805 transitions. Word has length 1666 [2024-11-08 18:21:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:21:29,330 INFO L471 AbstractCegarLoop]: Abstraction has 7237 states and 9805 transitions. [2024-11-08 18:21:29,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 96.88571428571429) internal successors, (3391), 34 states have internal predecessors, (3391), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-08 18:21:29,331 INFO L276 IsEmpty]: Start isEmpty. Operand 7237 states and 9805 transitions. [2024-11-08 18:21:29,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3361 [2024-11-08 18:21:29,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:21:29,418 INFO L215 NwaCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 32, 32, 32, 23, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:21:29,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 18:21:29,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 18:21:29,620 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:21:29,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:21:29,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1191132047, now seen corresponding path program 2 times [2024-11-08 18:21:29,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:21:29,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501597625] [2024-11-08 18:21:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:21:29,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:21:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:18,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:24:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:18,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:24:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:18,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-08 18:24:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:18,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-08 18:24:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:18,248 INFO L134 CoverageAnalysis]: Checked inductivity of 43859 backedges. 0 proven. 43835 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 18:24:18,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:18,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501597625] [2024-11-08 18:24:18,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501597625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:24:18,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096183646] [2024-11-08 18:24:18,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:24:18,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:24:18,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:24:18,251 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:24:18,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:24:21,627 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 18:24:21,628 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:24:21,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 18:24:21,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:24:21,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 18:24:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 43859 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43859 trivial. 0 not checked. [2024-11-08 18:24:22,988 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:24:22,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096183646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:24:22,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:24:22,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [72] total 81 [2024-11-08 18:24:22,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478060489] [2024-11-08 18:24:22,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:24:22,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 18:24:22,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:22,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 18:24:22,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1941, Invalid=4539, Unknown=0, NotChecked=0, Total=6480 [2024-11-08 18:24:22,995 INFO L87 Difference]: Start difference. First operand 7237 states and 9805 transitions. Second operand has 11 states, 11 states have (on average 22.181818181818183) internal successors, (244), 11 states have internal predecessors, (244), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:24:25,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:25,097 INFO L93 Difference]: Finished difference Result 8103 states and 11095 transitions. [2024-11-08 18:24:25,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:24:25,097 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.181818181818183) internal successors, (244), 11 states have internal predecessors, (244), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 3360 [2024-11-08 18:24:25,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:25,121 INFO L225 Difference]: With dead ends: 8103 [2024-11-08 18:24:25,121 INFO L226 Difference]: Without dead ends: 7242 [2024-11-08 18:24:25,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3464 GetRequests, 3377 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3399 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2185, Invalid=5647, Unknown=0, NotChecked=0, Total=7832 [2024-11-08 18:24:25,128 INFO L432 NwaCegarLoop]: 1236 mSDtfsCounter, 381 mSDsluCounter, 8953 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 10189 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:25,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 10189 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 18:24:25,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7242 states. [2024-11-08 18:24:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7242 to 7241. [2024-11-08 18:24:25,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7241 states, 7108 states have (on average 1.3451041080472708) internal successors, (9561), 7117 states have internal predecessors, (9561), 125 states have call successors, (125), 7 states have call predecessors, (125), 7 states have return successors, (124), 118 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-08 18:24:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7241 states to 7241 states and 9810 transitions. [2024-11-08 18:24:25,358 INFO L78 Accepts]: Start accepts. Automaton has 7241 states and 9810 transitions. Word has length 3360 [2024-11-08 18:24:25,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:25,361 INFO L471 AbstractCegarLoop]: Abstraction has 7241 states and 9810 transitions. [2024-11-08 18:24:25,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.181818181818183) internal successors, (244), 11 states have internal predecessors, (244), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:24:25,362 INFO L276 IsEmpty]: Start isEmpty. Operand 7241 states and 9810 transitions. [2024-11-08 18:24:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3362 [2024-11-08 18:24:25,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:25,453 INFO L215 NwaCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 32, 32, 32, 23, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:25,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 18:24:25,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc8b4f91-31bf-49fc-9036-d19dcf46b402/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 18:24:25,658 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:25,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:25,658 INFO L85 PathProgramCache]: Analyzing trace with hash 901762994, now seen corresponding path program 1 times [2024-11-08 18:24:25,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:25,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115808491] [2024-11-08 18:24:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:25,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:41,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:24:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:41,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:24:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:41,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-08 18:24:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:41,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-08 18:24:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:24:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 43859 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43859 trivial. 0 not checked. [2024-11-08 18:24:41,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:24:41,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115808491] [2024-11-08 18:24:41,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115808491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:24:41,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:24:41,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:24:41,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940020303] [2024-11-08 18:24:41,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:24:41,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 18:24:41,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:24:41,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 18:24:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:24:41,326 INFO L87 Difference]: Start difference. First operand 7241 states and 9810 transitions. Second operand has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 8 states have internal predecessors, (245), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:24:42,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:24:42,584 INFO L93 Difference]: Finished difference Result 8111 states and 11212 transitions. [2024-11-08 18:24:42,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:24:42,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 8 states have internal predecessors, (245), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 3361 [2024-11-08 18:24:42,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:24:42,606 INFO L225 Difference]: With dead ends: 8111 [2024-11-08 18:24:42,606 INFO L226 Difference]: Without dead ends: 7255 [2024-11-08 18:24:42,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:24:42,610 INFO L432 NwaCegarLoop]: 1223 mSDtfsCounter, 32 mSDsluCounter, 8014 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 9237 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:24:42,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 9237 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 18:24:42,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7255 states. [2024-11-08 18:24:42,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7255 to 7245. [2024-11-08 18:24:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7245 states, 7112 states have (on average 1.3450506186726658) internal successors, (9566), 7121 states have internal predecessors, (9566), 125 states have call successors, (125), 7 states have call predecessors, (125), 7 states have return successors, (124), 118 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-08 18:24:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7245 states to 7245 states and 9815 transitions. [2024-11-08 18:24:42,848 INFO L78 Accepts]: Start accepts. Automaton has 7245 states and 9815 transitions. Word has length 3361 [2024-11-08 18:24:42,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:24:42,850 INFO L471 AbstractCegarLoop]: Abstraction has 7245 states and 9815 transitions. [2024-11-08 18:24:42,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 8 states have internal predecessors, (245), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:24:42,851 INFO L276 IsEmpty]: Start isEmpty. Operand 7245 states and 9815 transitions. [2024-11-08 18:24:43,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3362 [2024-11-08 18:24:43,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:24:43,033 INFO L215 NwaCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 32, 32, 32, 23, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:24:43,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 18:24:43,034 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:24:43,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:24:43,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1520821707, now seen corresponding path program 1 times [2024-11-08 18:24:43,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:24:43,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230366032] [2024-11-08 18:24:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:24:43,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:24:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat