./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/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_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/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_e914d99d-397b-48bd-b778-d8510b1da32e/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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:44:42,511 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:44:42,611 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:44:42,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:44:42,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:44:42,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:44:42,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:44:42,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:44:42,654 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:44:42,658 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:44:42,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:44:42,659 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:44:42,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:44:42,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:44:42,661 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:44:42,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:44:42,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:44:42,664 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:44:42,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:44:42,665 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:44:42,665 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:44:42,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:44:42,669 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:44:42,669 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:44:42,670 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:44:42,670 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:44:42,670 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:44:42,670 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:44:42,671 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:44:42,671 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:44:42,671 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:44:42,672 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:44:42,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:44:42,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:44:42,675 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:44:42,675 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:44:42,676 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:44:42,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:44:42,676 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:44:42,676 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:44:42,677 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:44:42,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:44:42,678 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_e914d99d-397b-48bd-b778-d8510b1da32e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2024-11-08 17:44:42,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:44:43,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:44:43,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:44:43,024 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:44:43,024 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:44:43,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i Unable to find full path for "g++" [2024-11-08 17:44:45,097 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:44:45,363 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:44:45,364 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i [2024-11-08 17:44:45,393 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/data/a8497784d/606bf22de7a342e3aa347d7d36278355/FLAG8126289e0 [2024-11-08 17:44:45,420 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/data/a8497784d/606bf22de7a342e3aa347d7d36278355 [2024-11-08 17:44:45,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:44:45,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:44:45,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:44:45,427 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:44:45,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:44:45,433 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:44:45" (1/1) ... [2024-11-08 17:44:45,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d247c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:45, skipping insertion in model container [2024-11-08 17:44:45,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:44:45" (1/1) ... [2024-11-08 17:44:45,509 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:44:46,065 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_e914d99d-397b-48bd-b778-d8510b1da32e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i[33519,33532] [2024-11-08 17:44:46,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:44:46,255 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:44:46,312 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_e914d99d-397b-48bd-b778-d8510b1da32e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i[33519,33532] [2024-11-08 17:44:46,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:44:46,495 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:44:46,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:46 WrapperNode [2024-11-08 17:44:46,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:44:46,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:44:46,501 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:44:46,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:44:46,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:46" (1/1) ... [2024-11-08 17:44:46,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:46" (1/1) ... [2024-11-08 17:44:46,706 INFO L138 Inliner]: procedures = 177, calls = 273, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1396 [2024-11-08 17:44:46,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:44:46,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:44:46,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:44:46,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:44:46,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:46" (1/1) ... [2024-11-08 17:44:46,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:46" (1/1) ... [2024-11-08 17:44:46,740 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:46" (1/1) ... [2024-11-08 17:44:46,851 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 218, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2024-11-08 17:44:46,856 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:46" (1/1) ... [2024-11-08 17:44:46,856 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:46" (1/1) ... [2024-11-08 17:44:46,914 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:46" (1/1) ... [2024-11-08 17:44:46,975 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:46" (1/1) ... [2024-11-08 17:44:46,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:46" (1/1) ... [2024-11-08 17:44:46,994 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:46" (1/1) ... [2024-11-08 17:44:47,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:44:47,009 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:44:47,009 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:44:47,010 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:44:47,011 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:46" (1/1) ... [2024-11-08 17:44:47,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:44:47,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:44:47,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:44:47,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:44:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:44:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:44:47,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 17:44:47,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 17:44:47,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 17:44:47,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:44:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:44:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 17:44:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-08 17:44:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-08 17:44:47,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-08 17:44:47,095 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-08 17:44:47,095 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-08 17:44:47,096 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-08 17:44:47,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:44:47,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:44:47,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 17:44:47,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 17:44:47,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 17:44:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 17:44:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 17:44:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 17:44:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 17:44:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 17:44:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:44:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:44:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 17:44:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:44:47,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:44:47,412 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:44:47,414 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:44:49,352 INFO L? ?]: Removed 317 outVars from TransFormulas that were not future-live. [2024-11-08 17:44:49,353 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:44:49,388 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:44:49,388 INFO L316 CfgBuilder]: Removed 58 assume(true) statements. [2024-11-08 17:44:49,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:44:49 BoogieIcfgContainer [2024-11-08 17:44:49,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:44:49,391 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:44:49,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:44:49,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:44:49,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:44:45" (1/3) ... [2024-11-08 17:44:49,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4a803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:44:49, skipping insertion in model container [2024-11-08 17:44:49,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:44:46" (2/3) ... [2024-11-08 17:44:49,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4a803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:44:49, skipping insertion in model container [2024-11-08 17:44:49,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:44:49" (3/3) ... [2024-11-08 17:44:49,402 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test3-1.i [2024-11-08 17:44:49,419 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:44:49,419 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:44:49,522 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:44:49,532 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;@4f9387d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:44:49,532 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 17:44:49,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 406 states, 397 states have (on average 1.614609571788413) internal successors, (641), 399 states have internal predecessors, (641), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:44:49,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 17:44:49,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:49,552 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:44:49,552 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:49,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:49,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1667603384, now seen corresponding path program 1 times [2024-11-08 17:44:49,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:44:49,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505687864] [2024-11-08 17:44:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:49,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:44:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:49,804 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 17:44:49,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:44:49,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505687864] [2024-11-08 17:44:49,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505687864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:44:49,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:44:49,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:44:49,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426557718] [2024-11-08 17:44:49,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:44:49,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:44:49,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:44:49,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:44:49,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:44:49,859 INFO L87 Difference]: Start difference. First operand has 406 states, 397 states have (on average 1.614609571788413) internal successors, (641), 399 states have internal predecessors, (641), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:44:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:44:49,943 INFO L93 Difference]: Finished difference Result 809 states and 1300 transitions. [2024-11-08 17:44:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:44:49,949 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-08 17:44:49,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:44:49,969 INFO L225 Difference]: With dead ends: 809 [2024-11-08 17:44:49,969 INFO L226 Difference]: Without dead ends: 402 [2024-11-08 17:44:49,976 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 17:44:49,984 INFO L432 NwaCegarLoop]: 588 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, 588 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 17:44:49,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:44:50,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-11-08 17:44:50,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2024-11-08 17:44:50,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 394 states have (on average 1.4517766497461928) internal successors, (572), 395 states have internal predecessors, (572), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:44:50,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 582 transitions. [2024-11-08 17:44:50,056 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 582 transitions. Word has length 13 [2024-11-08 17:44:50,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:44:50,057 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 582 transitions. [2024-11-08 17:44:50,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:44:50,057 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 582 transitions. [2024-11-08 17:44:50,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 17:44:50,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:50,059 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:44:50,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:44:50,059 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:50,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:50,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1989725826, now seen corresponding path program 1 times [2024-11-08 17:44:50,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:44:50,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753344520] [2024-11-08 17:44:50,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:50,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:44:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:50,395 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 17:44:50,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:44:50,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753344520] [2024-11-08 17:44:50,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753344520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:44:50,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:44:50,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:44:50,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358619249] [2024-11-08 17:44:50,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:44:50,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:44:50,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:44:50,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:44:50,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:44:50,403 INFO L87 Difference]: Start difference. First operand 402 states and 582 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:44:50,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:44:50,923 INFO L93 Difference]: Finished difference Result 1099 states and 1609 transitions. [2024-11-08 17:44:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:44:50,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-08 17:44:50,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:44:50,931 INFO L225 Difference]: With dead ends: 1099 [2024-11-08 17:44:50,931 INFO L226 Difference]: Without dead ends: 698 [2024-11-08 17:44:50,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 17:44:50,939 INFO L432 NwaCegarLoop]: 571 mSDtfsCounter, 434 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:44:50,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1665 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:44:50,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-08 17:44:50,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 697. [2024-11-08 17:44:51,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 688 states have (on average 1.4709302325581395) internal successors, (1012), 690 states have internal predecessors, (1012), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:44:51,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1024 transitions. [2024-11-08 17:44:51,005 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1024 transitions. Word has length 15 [2024-11-08 17:44:51,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:44:51,006 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1024 transitions. [2024-11-08 17:44:51,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:44:51,007 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1024 transitions. [2024-11-08 17:44:51,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 17:44:51,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:51,012 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 17:44:51,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:44:51,013 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:51,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:51,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1731658954, now seen corresponding path program 1 times [2024-11-08 17:44:51,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:44:51,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970099597] [2024-11-08 17:44:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:51,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:44:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:51,478 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 17:44:51,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:44:51,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970099597] [2024-11-08 17:44:51,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970099597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:44:51,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:44:51,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:44:51,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836250621] [2024-11-08 17:44:51,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:44:51,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:44:51,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:44:51,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:44:51,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:44:51,485 INFO L87 Difference]: Start difference. First operand 697 states and 1024 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:44:51,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:44:51,626 INFO L93 Difference]: Finished difference Result 970 states and 1416 transitions. [2024-11-08 17:44:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:44:51,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-08 17:44:51,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:44:51,631 INFO L225 Difference]: With dead ends: 970 [2024-11-08 17:44:51,631 INFO L226 Difference]: Without dead ends: 611 [2024-11-08 17:44:51,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:44:51,634 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 27 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:44:51,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1413 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:44:51,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-11-08 17:44:51,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2024-11-08 17:44:51,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 602 states have (on average 1.4186046511627908) internal successors, (854), 604 states have internal predecessors, (854), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:44:51,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 866 transitions. [2024-11-08 17:44:51,659 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 866 transitions. Word has length 68 [2024-11-08 17:44:51,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:44:51,660 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 866 transitions. [2024-11-08 17:44:51,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:44:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 866 transitions. [2024-11-08 17:44:51,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 17:44:51,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:51,666 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 17:44:51,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:44:51,667 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:51,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:51,668 INFO L85 PathProgramCache]: Analyzing trace with hash -237896636, now seen corresponding path program 1 times [2024-11-08 17:44:51,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:44:51,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987875751] [2024-11-08 17:44:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:51,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:44:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:51,847 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 17:44:51,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:44:51,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987875751] [2024-11-08 17:44:51,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987875751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:44:51,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:44:51,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:44:51,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778275724] [2024-11-08 17:44:51,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:44:51,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:44:51,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:44:51,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:44:51,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:44:51,851 INFO L87 Difference]: Start difference. First operand 611 states and 866 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:44:51,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:44:51,924 INFO L93 Difference]: Finished difference Result 884 states and 1236 transitions. [2024-11-08 17:44:51,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:44:51,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-08 17:44:51,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:44:51,929 INFO L225 Difference]: With dead ends: 884 [2024-11-08 17:44:51,929 INFO L226 Difference]: Without dead ends: 611 [2024-11-08 17:44:51,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 17:44:51,933 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 1 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:44:51,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 960 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:44:51,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-11-08 17:44:51,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2024-11-08 17:44:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 602 states have (on average 1.4086378737541527) internal successors, (848), 604 states have internal predecessors, (848), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:44:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 860 transitions. [2024-11-08 17:44:51,959 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 860 transitions. Word has length 68 [2024-11-08 17:44:51,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:44:51,960 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 860 transitions. [2024-11-08 17:44:51,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:44:51,960 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 860 transitions. [2024-11-08 17:44:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 17:44:51,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:51,965 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 17:44:51,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:44:51,965 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:51,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:51,966 INFO L85 PathProgramCache]: Analyzing trace with hash -53422656, now seen corresponding path program 1 times [2024-11-08 17:44:51,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:44:51,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14863210] [2024-11-08 17:44:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:51,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:44:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:52,510 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 17:44:52,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:44:52,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14863210] [2024-11-08 17:44:52,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14863210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:44:52,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:44:52,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:44:52,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574185101] [2024-11-08 17:44:52,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:44:52,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:44:52,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:44:52,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:44:52,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:44:52,515 INFO L87 Difference]: Start difference. First operand 611 states and 860 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:44:52,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:44:52,807 INFO L93 Difference]: Finished difference Result 1129 states and 1554 transitions. [2024-11-08 17:44:52,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:44:52,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-08 17:44:52,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:44:52,812 INFO L225 Difference]: With dead ends: 1129 [2024-11-08 17:44:52,812 INFO L226 Difference]: Without dead ends: 853 [2024-11-08 17:44:52,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:44:52,814 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 469 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:44:52,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 2401 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:44:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2024-11-08 17:44:52,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 610. [2024-11-08 17:44:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 601 states have (on average 1.4076539101497505) internal successors, (846), 603 states have internal predecessors, (846), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:44:52,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 858 transitions. [2024-11-08 17:44:52,846 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 858 transitions. Word has length 68 [2024-11-08 17:44:52,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:44:52,848 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 858 transitions. [2024-11-08 17:44:52,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:44:52,849 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 858 transitions. [2024-11-08 17:44:52,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-08 17:44:52,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:52,851 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] [2024-11-08 17:44:52,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:44:52,852 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:52,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:52,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1270794709, now seen corresponding path program 1 times [2024-11-08 17:44:52,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:44:52,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665962323] [2024-11-08 17:44:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:52,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:44:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:53,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 17:44:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:53,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 17:44:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:53,256 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 17:44:53,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:44:53,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665962323] [2024-11-08 17:44:53,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665962323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:44:53,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:44:53,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:44:53,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575504599] [2024-11-08 17:44:53,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:44:53,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:44:53,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:44:53,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:44:53,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:44:53,263 INFO L87 Difference]: Start difference. First operand 610 states and 858 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:44:53,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:44:53,673 INFO L93 Difference]: Finished difference Result 1127 states and 1576 transitions. [2024-11-08 17:44:53,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:44:53,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2024-11-08 17:44:53,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:44:53,677 INFO L225 Difference]: With dead ends: 1127 [2024-11-08 17:44:53,677 INFO L226 Difference]: Without dead ends: 527 [2024-11-08 17:44:53,679 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 17:44:53,679 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 38 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:44:53,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1448 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:44:53,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-08 17:44:53,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 524. [2024-11-08 17:44:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 515 states have (on average 1.3359223300970873) internal successors, (688), 517 states have internal predecessors, (688), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:44:53,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 700 transitions. [2024-11-08 17:44:53,700 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 700 transitions. Word has length 106 [2024-11-08 17:44:53,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:44:53,700 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 700 transitions. [2024-11-08 17:44:53,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:44:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 700 transitions. [2024-11-08 17:44:53,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-08 17:44:53,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:53,703 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] [2024-11-08 17:44:53,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:44:53,704 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:53,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:53,704 INFO L85 PathProgramCache]: Analyzing trace with hash 16619423, now seen corresponding path program 1 times [2024-11-08 17:44:53,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:44:53,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306402700] [2024-11-08 17:44:53,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:53,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:44:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:54,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 17:44:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:54,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 17:44:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:54,075 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 17:44:54,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:44:54,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306402700] [2024-11-08 17:44:54,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306402700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:44:54,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:44:54,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:44:54,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365673793] [2024-11-08 17:44:54,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:44:54,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:44:54,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:44:54,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:44:54,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:44:54,080 INFO L87 Difference]: Start difference. First operand 524 states and 700 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:44:54,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:44:54,526 INFO L93 Difference]: Finished difference Result 1016 states and 1367 transitions. [2024-11-08 17:44:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:44:54,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2024-11-08 17:44:54,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:44:54,529 INFO L225 Difference]: With dead ends: 1016 [2024-11-08 17:44:54,530 INFO L226 Difference]: Without dead ends: 527 [2024-11-08 17:44:54,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 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 17:44:54,531 INFO L432 NwaCegarLoop]: 400 mSDtfsCounter, 8 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:44:54,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1102 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:44:54,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-08 17:44:54,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 524. [2024-11-08 17:44:54,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 515 states have (on average 1.3242718446601942) internal successors, (682), 517 states have internal predecessors, (682), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:44:54,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 694 transitions. [2024-11-08 17:44:54,551 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 694 transitions. Word has length 106 [2024-11-08 17:44:54,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:44:54,552 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 694 transitions. [2024-11-08 17:44:54,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:44:54,553 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 694 transitions. [2024-11-08 17:44:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-08 17:44:54,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:54,554 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] [2024-11-08 17:44:54,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:44:54,554 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:54,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:54,555 INFO L85 PathProgramCache]: Analyzing trace with hash -870603423, now seen corresponding path program 1 times [2024-11-08 17:44:54,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:44:54,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673530692] [2024-11-08 17:44:54,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:54,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:44:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:55,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 17:44:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:55,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 17:44:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:44:55,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:44:55,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673530692] [2024-11-08 17:44:55,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673530692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:44:55,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945123837] [2024-11-08 17:44:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:55,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:55,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:44:55,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:44:55,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:44:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:55,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 17:44:55,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:44:55,812 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 17:44:55,848 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 16 treesize of output 17 [2024-11-08 17:44:57,097 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 17:44:57,097 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:44:57,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945123837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:44:57,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:44:57,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-08 17:44:57,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278771175] [2024-11-08 17:44:57,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:44:57,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:44:57,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:44:57,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:44:57,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:44:57,101 INFO L87 Difference]: Start difference. First operand 524 states and 694 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:44:58,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:44:58,918 INFO L93 Difference]: Finished difference Result 1248 states and 1669 transitions. [2024-11-08 17:44:58,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:44:58,920 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2024-11-08 17:44:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:44:58,927 INFO L225 Difference]: With dead ends: 1248 [2024-11-08 17:44:58,928 INFO L226 Difference]: Without dead ends: 769 [2024-11-08 17:44:58,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-08 17:44:58,931 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 503 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:44:58,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 2325 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 17:44:58,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2024-11-08 17:44:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 524. [2024-11-08 17:44:58,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 515 states have (on average 1.3223300970873786) internal successors, (681), 517 states have internal predecessors, (681), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:44:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 693 transitions. [2024-11-08 17:44:58,955 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 693 transitions. Word has length 106 [2024-11-08 17:44:58,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:44:58,955 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 693 transitions. [2024-11-08 17:44:58,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:44:58,956 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 693 transitions. [2024-11-08 17:44:58,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 17:44:58,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:58,957 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] [2024-11-08 17:44:58,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:44:59,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:59,161 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:59,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:59,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2139017985, now seen corresponding path program 1 times [2024-11-08 17:44:59,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:44:59,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263879427] [2024-11-08 17:44:59,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:59,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:44:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:59,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:44:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:59,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-08 17:44:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:44:59,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:44:59,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263879427] [2024-11-08 17:44:59,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263879427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:44:59,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653254670] [2024-11-08 17:44:59,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:59,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:59,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:44:59,765 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:44:59,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:45:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:00,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:45:00,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:45:00,215 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 17:45:00,232 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 7 treesize of output 3 [2024-11-08 17:45:00,562 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 17:45:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:45:00,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:45:01,026 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 17:45:01,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653254670] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:45:01,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:45:01,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 7] total 12 [2024-11-08 17:45:01,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145110029] [2024-11-08 17:45:01,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:45:01,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:45:01,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:45:01,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:45:01,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:45:01,029 INFO L87 Difference]: Start difference. First operand 524 states and 693 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:01,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:45:01,170 INFO L93 Difference]: Finished difference Result 710 states and 942 transitions. [2024-11-08 17:45:01,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:45:01,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 107 [2024-11-08 17:45:01,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:45:01,177 INFO L225 Difference]: With dead ends: 710 [2024-11-08 17:45:01,177 INFO L226 Difference]: Without dead ends: 699 [2024-11-08 17:45:01,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 206 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:45:01,180 INFO L432 NwaCegarLoop]: 403 mSDtfsCounter, 675 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:45:01,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1170 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:45:01,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-08 17:45:01,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 526. [2024-11-08 17:45:01,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 517 states have (on average 1.321083172147002) internal successors, (683), 519 states have internal predecessors, (683), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:45:01,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 695 transitions. [2024-11-08 17:45:01,206 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 695 transitions. Word has length 107 [2024-11-08 17:45:01,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:45:01,207 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 695 transitions. [2024-11-08 17:45:01,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:01,207 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 695 transitions. [2024-11-08 17:45:01,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-08 17:45:01,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:45:01,210 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] [2024-11-08 17:45:01,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:45:01,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:01,412 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:45:01,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:01,413 INFO L85 PathProgramCache]: Analyzing trace with hash 424223393, now seen corresponding path program 1 times [2024-11-08 17:45:01,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:45:01,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409634107] [2024-11-08 17:45:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:01,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:45:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:01,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:45:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:01,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-08 17:45:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:01,798 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 17:45:01,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:45:01,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409634107] [2024-11-08 17:45:01,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409634107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:45:01,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:45:01,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:45:01,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676211304] [2024-11-08 17:45:01,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:45:01,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:45:01,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:45:01,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:45:01,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:45:01,801 INFO L87 Difference]: Start difference. First operand 526 states and 695 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:02,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:45:02,673 INFO L93 Difference]: Finished difference Result 1312 states and 1750 transitions. [2024-11-08 17:45:02,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:45:02,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 160 [2024-11-08 17:45:02,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:45:02,680 INFO L225 Difference]: With dead ends: 1312 [2024-11-08 17:45:02,680 INFO L226 Difference]: Without dead ends: 878 [2024-11-08 17:45:02,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 17:45:02,683 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 1069 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:45:02,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1600 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 17:45:02,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2024-11-08 17:45:02,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 667. [2024-11-08 17:45:02,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 657 states have (on average 1.32572298325723) internal successors, (871), 660 states have internal predecessors, (871), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 17:45:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 885 transitions. [2024-11-08 17:45:02,725 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 885 transitions. Word has length 160 [2024-11-08 17:45:02,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:45:02,727 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 885 transitions. [2024-11-08 17:45:02,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:02,728 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 885 transitions. [2024-11-08 17:45:02,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-08 17:45:02,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:45:02,730 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] [2024-11-08 17:45:02,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:45:02,730 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:45:02,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:02,731 INFO L85 PathProgramCache]: Analyzing trace with hash 808545110, now seen corresponding path program 1 times [2024-11-08 17:45:02,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:45:02,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642565247] [2024-11-08 17:45:02,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:02,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:45:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:03,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:45:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:03,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-08 17:45:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:45:03,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:45:03,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642565247] [2024-11-08 17:45:03,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642565247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:45:03,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367724589] [2024-11-08 17:45:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:03,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:03,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:45:03,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:45:03,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:45:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:03,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 17:45:03,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:45:03,884 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 17:45:03,884 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:45:03,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367724589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:45:03,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:45:03,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-08 17:45:03,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803042376] [2024-11-08 17:45:03,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:45:03,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:45:03,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:45:03,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:45:03,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:45:03,888 INFO L87 Difference]: Start difference. First operand 667 states and 885 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:04,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:45:04,069 INFO L93 Difference]: Finished difference Result 1289 states and 1722 transitions. [2024-11-08 17:45:04,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:45:04,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2024-11-08 17:45:04,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:45:04,073 INFO L225 Difference]: With dead ends: 1289 [2024-11-08 17:45:04,073 INFO L226 Difference]: Without dead ends: 667 [2024-11-08 17:45:04,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:45:04,075 INFO L432 NwaCegarLoop]: 402 mSDtfsCounter, 17 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:45:04,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1077 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:45:04,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-08 17:45:04,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2024-11-08 17:45:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 657 states have (on average 1.3226788432267884) internal successors, (869), 660 states have internal predecessors, (869), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 17:45:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 883 transitions. [2024-11-08 17:45:04,112 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 883 transitions. Word has length 170 [2024-11-08 17:45:04,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:45:04,113 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 883 transitions. [2024-11-08 17:45:04,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:04,113 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 883 transitions. [2024-11-08 17:45:04,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-08 17:45:04,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:45:04,116 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] [2024-11-08 17:45:04,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 17:45:04,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:04,326 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:45:04,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:04,326 INFO L85 PathProgramCache]: Analyzing trace with hash 441656337, now seen corresponding path program 1 times [2024-11-08 17:45:04,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:45:04,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044474289] [2024-11-08 17:45:04,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:04,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:45:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:04,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-08 17:45:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:04,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 17:45:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:04,899 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 17:45:04,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:45:04,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044474289] [2024-11-08 17:45:04,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044474289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:45:04,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:45:04,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:45:04,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066408851] [2024-11-08 17:45:04,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:45:04,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:45:04,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:45:04,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:45:04,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:45:04,901 INFO L87 Difference]: Start difference. First operand 667 states and 883 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:05,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:45:05,583 INFO L93 Difference]: Finished difference Result 1295 states and 1730 transitions. [2024-11-08 17:45:05,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:45:05,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-08 17:45:05,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:45:05,587 INFO L225 Difference]: With dead ends: 1295 [2024-11-08 17:45:05,587 INFO L226 Difference]: Without dead ends: 676 [2024-11-08 17:45:05,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:45:05,589 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 16 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:45:05,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1989 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:45:05,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2024-11-08 17:45:05,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 673. [2024-11-08 17:45:05,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 663 states have (on average 1.3197586726998491) internal successors, (875), 666 states have internal predecessors, (875), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 17:45:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 889 transitions. [2024-11-08 17:45:05,660 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 889 transitions. Word has length 171 [2024-11-08 17:45:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:45:05,660 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 889 transitions. [2024-11-08 17:45:05,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 889 transitions. [2024-11-08 17:45:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-08 17:45:05,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:45:05,664 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] [2024-11-08 17:45:05,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 17:45:05,664 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:45:05,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash 288649903, now seen corresponding path program 1 times [2024-11-08 17:45:05,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:45:05,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761469723] [2024-11-08 17:45:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:05,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:45:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:06,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 17:45:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:06,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 17:45:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:06,212 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 17:45:06,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:45:06,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761469723] [2024-11-08 17:45:06,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761469723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:45:06,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:45:06,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:45:06,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777028012] [2024-11-08 17:45:06,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:45:06,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:45:06,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:45:06,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:45:06,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:45:06,218 INFO L87 Difference]: Start difference. First operand 673 states and 889 transitions. Second operand has 8 states, 8 states have (on average 20.5) internal successors, (164), 7 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:07,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:45:07,031 INFO L93 Difference]: Finished difference Result 1301 states and 1734 transitions. [2024-11-08 17:45:07,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:45:07,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 7 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2024-11-08 17:45:07,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:45:07,036 INFO L225 Difference]: With dead ends: 1301 [2024-11-08 17:45:07,036 INFO L226 Difference]: Without dead ends: 686 [2024-11-08 17:45:07,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:45:07,038 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 20 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:45:07,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2288 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:45:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-11-08 17:45:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 681. [2024-11-08 17:45:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 671 states have (on average 1.3189269746646797) internal successors, (885), 674 states have internal predecessors, (885), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 17:45:07,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 899 transitions. [2024-11-08 17:45:07,097 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 899 transitions. Word has length 172 [2024-11-08 17:45:07,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:45:07,097 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 899 transitions. [2024-11-08 17:45:07,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 7 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 899 transitions. [2024-11-08 17:45:07,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-08 17:45:07,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:45:07,100 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] [2024-11-08 17:45:07,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:45:07,100 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:45:07,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:07,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1674329235, now seen corresponding path program 1 times [2024-11-08 17:45:07,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:45:07,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225867083] [2024-11-08 17:45:07,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:07,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:45:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:07,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 17:45:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:07,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 17:45:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:45:07,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:45:07,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225867083] [2024-11-08 17:45:07,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225867083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:45:07,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696620464] [2024-11-08 17:45:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:07,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:07,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:45:07,849 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:45:07,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:45:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:08,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 17:45:08,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:45:08,385 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 17:45:08,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:45:08,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2024-11-08 17:45:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:45:09,219 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:45:09,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696620464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:45:09,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:45:09,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-11-08 17:45:09,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664515422] [2024-11-08 17:45:09,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:45:09,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:45:09,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:45:09,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:45:09,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:45:09,222 INFO L87 Difference]: Start difference. First operand 681 states and 899 transitions. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:10,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:45:10,753 INFO L93 Difference]: Finished difference Result 1317 states and 1750 transitions. [2024-11-08 17:45:10,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:45:10,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2024-11-08 17:45:10,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:45:10,758 INFO L225 Difference]: With dead ends: 1317 [2024-11-08 17:45:10,758 INFO L226 Difference]: Without dead ends: 903 [2024-11-08 17:45:10,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:45:10,760 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 389 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:45:10,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 2692 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 17:45:10,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2024-11-08 17:45:10,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 716. [2024-11-08 17:45:10,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 706 states have (on average 1.3045325779036827) internal successors, (921), 709 states have internal predecessors, (921), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 17:45:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 935 transitions. [2024-11-08 17:45:10,797 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 935 transitions. Word has length 172 [2024-11-08 17:45:10,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:45:10,797 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 935 transitions. [2024-11-08 17:45:10,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 935 transitions. [2024-11-08 17:45:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-08 17:45:10,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:45:10,800 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] [2024-11-08 17:45:10,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 17:45:11,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:11,004 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:45:11,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:11,005 INFO L85 PathProgramCache]: Analyzing trace with hash 711519950, now seen corresponding path program 1 times [2024-11-08 17:45:11,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:45:11,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644796744] [2024-11-08 17:45:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:11,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:45:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:11,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 17:45:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:11,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 17:45:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:45:11,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:45:11,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644796744] [2024-11-08 17:45:11,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644796744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:45:11,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089163638] [2024-11-08 17:45:11,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:11,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:11,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:45:11,725 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:45:11,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:45:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:12,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 17:45:12,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:45:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:45:12,415 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:45:12,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089163638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:45:12,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:45:12,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-08 17:45:12,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470906657] [2024-11-08 17:45:12,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:45:12,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:45:12,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:45:12,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:45:12,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:45:12,419 INFO L87 Difference]: Start difference. First operand 716 states and 935 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:12,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:45:12,782 INFO L93 Difference]: Finished difference Result 1130 states and 1490 transitions. [2024-11-08 17:45:12,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:45:12,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2024-11-08 17:45:12,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:45:12,786 INFO L225 Difference]: With dead ends: 1130 [2024-11-08 17:45:12,787 INFO L226 Difference]: Without dead ends: 716 [2024-11-08 17:45:12,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:45:12,790 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 34 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:45:12,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1702 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:45:12,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-08 17:45:12,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2024-11-08 17:45:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 706 states have (on average 1.3002832861189801) internal successors, (918), 709 states have internal predecessors, (918), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 17:45:12,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 932 transitions. [2024-11-08 17:45:12,830 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 932 transitions. Word has length 173 [2024-11-08 17:45:12,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:45:12,830 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 932 transitions. [2024-11-08 17:45:12,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:12,831 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 932 transitions. [2024-11-08 17:45:12,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-08 17:45:12,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:45:12,834 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] [2024-11-08 17:45:12,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 17:45:13,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 17:45:13,035 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:45:13,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:13,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1549569422, now seen corresponding path program 1 times [2024-11-08 17:45:13,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:45:13,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597832909] [2024-11-08 17:45:13,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:13,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:45:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:13,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 17:45:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:13,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 17:45:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:45:13,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:45:13,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597832909] [2024-11-08 17:45:13,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597832909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:45:13,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:45:13,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:45:13,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726758752] [2024-11-08 17:45:13,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:45:13,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:45:13,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:45:13,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:45:13,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:45:13,643 INFO L87 Difference]: Start difference. First operand 716 states and 932 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:14,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:45:14,358 INFO L93 Difference]: Finished difference Result 1150 states and 1513 transitions. [2024-11-08 17:45:14,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:45:14,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2024-11-08 17:45:14,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:45:14,365 INFO L225 Difference]: With dead ends: 1150 [2024-11-08 17:45:14,365 INFO L226 Difference]: Without dead ends: 736 [2024-11-08 17:45:14,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:45:14,366 INFO L432 NwaCegarLoop]: 397 mSDtfsCounter, 20 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:45:14,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1989 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:45:14,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-11-08 17:45:14,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 725. [2024-11-08 17:45:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 715 states have (on average 1.2965034965034965) internal successors, (927), 718 states have internal predecessors, (927), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 17:45:14,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 941 transitions. [2024-11-08 17:45:14,404 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 941 transitions. Word has length 174 [2024-11-08 17:45:14,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:45:14,405 INFO L471 AbstractCegarLoop]: Abstraction has 725 states and 941 transitions. [2024-11-08 17:45:14,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 941 transitions. [2024-11-08 17:45:14,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-08 17:45:14,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:45:14,408 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] [2024-11-08 17:45:14,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 17:45:14,409 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:45:14,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:14,409 INFO L85 PathProgramCache]: Analyzing trace with hash 906657351, now seen corresponding path program 1 times [2024-11-08 17:45:14,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:45:14,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009955462] [2024-11-08 17:45:14,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:14,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:45:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:15,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 17:45:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:15,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 17:45:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:45:15,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:45:15,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009955462] [2024-11-08 17:45:15,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009955462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:45:15,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:45:15,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 17:45:15,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429295164] [2024-11-08 17:45:15,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:45:15,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:45:15,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:45:15,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:45:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:45:15,039 INFO L87 Difference]: Start difference. First operand 725 states and 941 transitions. Second operand has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:15,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:45:15,912 INFO L93 Difference]: Finished difference Result 1187 states and 1559 transitions. [2024-11-08 17:45:15,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:45:15,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2024-11-08 17:45:15,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:45:15,917 INFO L225 Difference]: With dead ends: 1187 [2024-11-08 17:45:15,917 INFO L226 Difference]: Without dead ends: 764 [2024-11-08 17:45:15,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:45:15,919 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 27 mSDsluCounter, 2202 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:45:15,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2589 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 17:45:15,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2024-11-08 17:45:15,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 737. [2024-11-08 17:45:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 727 states have (on average 1.295735900962861) internal successors, (942), 730 states have internal predecessors, (942), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 17:45:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 956 transitions. [2024-11-08 17:45:15,954 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 956 transitions. Word has length 175 [2024-11-08 17:45:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:45:15,955 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 956 transitions. [2024-11-08 17:45:15,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:45:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 956 transitions. [2024-11-08 17:45:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-08 17:45:15,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:45:15,958 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] [2024-11-08 17:45:15,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 17:45:15,958 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:45:15,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:15,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2131519019, now seen corresponding path program 1 times [2024-11-08 17:45:15,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:45:15,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189381219] [2024-11-08 17:45:15,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:15,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:45:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:16,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 17:45:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:16,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 17:45:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:45:16,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:45:16,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189381219] [2024-11-08 17:45:16,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189381219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:45:16,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302433814] [2024-11-08 17:45:16,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:16,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:16,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:45:16,430 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:45:16,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e914d99d-397b-48bd-b778-d8510b1da32e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:45:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:17,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-08 17:45:17,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:45:17,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:45:17,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 17:45:17,857 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-08 17:45:17,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-11-08 17:45:17,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 17:45:17,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-08 17:45:17,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-08 17:46:10,688 INFO L224 Elim1Store]: Index analysis took 2154 ms