./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya --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 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:46:44,015 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:46:44,087 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:46:44,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:46:44,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:46:44,115 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:46:44,116 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:46:44,117 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:46:44,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:46:44,118 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:46:44,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:46:44,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:46:44,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:46:44,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:46:44,120 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:46:44,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:46:44,122 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:46:44,122 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:46:44,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:46:44,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:46:44,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:46:44,124 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:46:44,125 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:46:44,125 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:46:44,125 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:46:44,126 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:46:44,126 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:46:44,127 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:46:44,127 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:46:44,127 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:46:44,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:46:44,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:46:44,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:46:44,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:46:44,129 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:46:44,129 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:46:44,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:46:44,130 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:46:44,130 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:46:44,130 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:46:44,130 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:46:44,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:46:44,131 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_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2023-11-29 03:46:44,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:46:44,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:46:44,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:46:44,407 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:46:44,408 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:46:44,408 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-2.i [2023-11-29 03:46:47,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:46:47,352 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:46:47,353 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-2.i [2023-11-29 03:46:47,371 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/data/5186a138c/6e46422e669d468ab1e606910b2204a6/FLAGaff9d7057 [2023-11-29 03:46:47,385 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/data/5186a138c/6e46422e669d468ab1e606910b2204a6 [2023-11-29 03:46:47,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:46:47,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:46:47,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:46:47,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:46:47,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:46:47,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:46:47" (1/1) ... [2023-11-29 03:46:47,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@375eefed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:47, skipping insertion in model container [2023-11-29 03:46:47,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:46:47" (1/1) ... [2023-11-29 03:46:47,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:46:47,858 WARN L240 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_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-2.i[33519,33532] [2023-11-29 03:46:47,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:46:47,943 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:46:47,973 WARN L240 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_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-2.i[33519,33532] [2023-11-29 03:46:48,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:46:48,050 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:46:48,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:48 WrapperNode [2023-11-29 03:46:48,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:46:48,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:46:48,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:46:48,052 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:46:48,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:48" (1/1) ... [2023-11-29 03:46:48,083 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:48" (1/1) ... [2023-11-29 03:46:48,129 INFO L138 Inliner]: procedures = 177, calls = 227, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 916 [2023-11-29 03:46:48,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:46:48,130 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:46:48,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:46:48,131 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:46:48,142 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:48" (1/1) ... [2023-11-29 03:46:48,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:48" (1/1) ... [2023-11-29 03:46:48,153 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:48" (1/1) ... [2023-11-29 03:46:48,228 INFO L175 MemorySlicer]: Split 211 memory accesses to 3 slices as follows [2, 204, 5]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 51 writes are split as follows [0, 50, 1]. [2023-11-29 03:46:48,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:48" (1/1) ... [2023-11-29 03:46:48,229 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:48" (1/1) ... [2023-11-29 03:46:48,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:48" (1/1) ... [2023-11-29 03:46:48,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:48" (1/1) ... [2023-11-29 03:46:48,286 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:48" (1/1) ... [2023-11-29 03:46:48,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:48" (1/1) ... [2023-11-29 03:46:48,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:46:48,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:46:48,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:46:48,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:46:48,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:48" (1/1) ... [2023-11-29 03:46:48,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:46:48,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:48,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:46:48,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:46:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:46:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:46:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:46:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:46:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:46:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:46:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 03:46:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 03:46:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 03:46:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 03:46:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 03:46:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 03:46:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:46:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:46:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:46:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 03:46:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 03:46:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 03:46:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 03:46:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 03:46:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 03:46:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:46:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:46:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:46:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:46:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:46:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:46:48,585 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:46:48,587 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:46:49,565 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:46:49,606 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:46:49,606 INFO L309 CfgBuilder]: Removed 40 assume(true) statements. [2023-11-29 03:46:49,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:46:49 BoogieIcfgContainer [2023-11-29 03:46:49,607 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:46:49,609 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:46:49,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:46:49,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:46:49,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:46:47" (1/3) ... [2023-11-29 03:46:49,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81b0b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:46:49, skipping insertion in model container [2023-11-29 03:46:49,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:48" (2/3) ... [2023-11-29 03:46:49,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81b0b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:46:49, skipping insertion in model container [2023-11-29 03:46:49,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:46:49" (3/3) ... [2023-11-29 03:46:49,615 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test1-2.i [2023-11-29 03:46:49,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:46:49,634 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:46:49,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:46:49,694 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@608ce13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:46:49,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:46:49,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 217 states, 211 states have (on average 1.6919431279620853) internal successors, (357), 212 states have internal predecessors, (357), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:46:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 03:46:49,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:49,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:49,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:46:49,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:49,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1953270413, now seen corresponding path program 1 times [2023-11-29 03:46:49,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:49,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056574753] [2023-11-29 03:46:49,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:49,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:49,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:49,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056574753] [2023-11-29 03:46:49,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056574753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:49,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:49,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:46:49,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971599639] [2023-11-29 03:46:49,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:49,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:46:49,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:49,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:46:49,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:46:49,959 INFO L87 Difference]: Start difference. First operand has 217 states, 211 states have (on average 1.6919431279620853) internal successors, (357), 212 states have internal predecessors, (357), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:50,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:50,055 INFO L93 Difference]: Finished difference Result 605 states and 1019 transitions. [2023-11-29 03:46:50,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:46:50,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 03:46:50,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:50,069 INFO L225 Difference]: With dead ends: 605 [2023-11-29 03:46:50,069 INFO L226 Difference]: Without dead ends: 354 [2023-11-29 03:46:50,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:46:50,076 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 252 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:50,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 659 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:46:50,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-29 03:46:50,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 183. [2023-11-29 03:46:50,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.4887640449438202) internal successors, (265), 178 states have internal predecessors, (265), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:46:50,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 271 transitions. [2023-11-29 03:46:50,134 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 271 transitions. Word has length 7 [2023-11-29 03:46:50,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:50,134 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 271 transitions. [2023-11-29 03:46:50,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:50,135 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 271 transitions. [2023-11-29 03:46:50,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 03:46:50,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:50,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:50,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:46:50,141 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:46:50,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash -344098266, now seen corresponding path program 1 times [2023-11-29 03:46:50,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:50,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247538514] [2023-11-29 03:46:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:50,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:50,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:50,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247538514] [2023-11-29 03:46:50,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247538514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:50,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:50,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:46:50,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594788748] [2023-11-29 03:46:50,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:50,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:46:50,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:46:50,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:46:50,559 INFO L87 Difference]: Start difference. First operand 183 states and 271 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:50,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:50,658 INFO L93 Difference]: Finished difference Result 368 states and 544 transitions. [2023-11-29 03:46:50,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:46:50,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-11-29 03:46:50,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:50,660 INFO L225 Difference]: With dead ends: 368 [2023-11-29 03:46:50,661 INFO L226 Difference]: Without dead ends: 187 [2023-11-29 03:46:50,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:46:50,663 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 165 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:50,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 568 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:46:50,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-29 03:46:50,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2023-11-29 03:46:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.449438202247191) internal successors, (258), 178 states have internal predecessors, (258), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:46:50,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 264 transitions. [2023-11-29 03:46:50,677 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 264 transitions. Word has length 82 [2023-11-29 03:46:50,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:50,678 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 264 transitions. [2023-11-29 03:46:50,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:50,678 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 264 transitions. [2023-11-29 03:46:50,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 03:46:50,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:50,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:50,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:46:50,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:46:50,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:50,683 INFO L85 PathProgramCache]: Analyzing trace with hash 437847858, now seen corresponding path program 1 times [2023-11-29 03:46:50,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:50,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143285194] [2023-11-29 03:46:50,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:50,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:50,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:50,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143285194] [2023-11-29 03:46:50,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143285194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:50,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:50,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:46:50,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544338225] [2023-11-29 03:46:50,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:50,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:46:50,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:50,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:46:50,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:46:50,880 INFO L87 Difference]: Start difference. First operand 183 states and 264 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:50,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:50,950 INFO L93 Difference]: Finished difference Result 475 states and 697 transitions. [2023-11-29 03:46:50,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:46:50,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-11-29 03:46:50,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:50,955 INFO L225 Difference]: With dead ends: 475 [2023-11-29 03:46:50,955 INFO L226 Difference]: Without dead ends: 294 [2023-11-29 03:46:50,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:46:50,957 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 123 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:50,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 503 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:46:50,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-29 03:46:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-11-29 03:46:50,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 289 states have (on average 1.480968858131488) internal successors, (428), 289 states have internal predecessors, (428), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:46:50,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 434 transitions. [2023-11-29 03:46:50,975 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 434 transitions. Word has length 82 [2023-11-29 03:46:50,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:50,976 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 434 transitions. [2023-11-29 03:46:50,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:50,976 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 434 transitions. [2023-11-29 03:46:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 03:46:50,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:50,979 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 03:46:50,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:46:50,979 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:46:50,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:50,980 INFO L85 PathProgramCache]: Analyzing trace with hash -341145251, now seen corresponding path program 1 times [2023-11-29 03:46:50,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:50,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171705751] [2023-11-29 03:46:50,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:50,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:51,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 03:46:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:51,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 03:46:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 03:46:51,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:51,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171705751] [2023-11-29 03:46:51,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171705751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:46:51,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317690062] [2023-11-29 03:46:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:51,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:51,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:51,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:46:51,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:46:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:51,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:46:51,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 03:46:51,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:46:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 03:46:51,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317690062] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:46:51,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:46:51,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2023-11-29 03:46:51,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355025627] [2023-11-29 03:46:51,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:46:51,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:46:51,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:51,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:46:51,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:46:51,967 INFO L87 Difference]: Start difference. First operand 294 states and 434 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 6 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:46:52,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:52,292 INFO L93 Difference]: Finished difference Result 705 states and 1040 transitions. [2023-11-29 03:46:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:46:52,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 6 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 95 [2023-11-29 03:46:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:52,299 INFO L225 Difference]: With dead ends: 705 [2023-11-29 03:46:52,300 INFO L226 Difference]: Without dead ends: 699 [2023-11-29 03:46:52,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:46:52,301 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 1241 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:52,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 1258 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:46:52,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-11-29 03:46:52,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 697. [2023-11-29 03:46:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 683 states have (on average 1.4538799414348462) internal successors, (993), 683 states have internal predecessors, (993), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 03:46:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1017 transitions. [2023-11-29 03:46:52,335 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1017 transitions. Word has length 95 [2023-11-29 03:46:52,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:52,335 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1017 transitions. [2023-11-29 03:46:52,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 6 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:46:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1017 transitions. [2023-11-29 03:46:52,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-11-29 03:46:52,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:52,341 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:52,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:46:52,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:52,543 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:46:52,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:52,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1023306216, now seen corresponding path program 1 times [2023-11-29 03:46:52,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:52,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705667376] [2023-11-29 03:46:52,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:52,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:53,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 03:46:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:53,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 03:46:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 4 proven. 327 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-29 03:46:53,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:53,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705667376] [2023-11-29 03:46:53,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705667376] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:46:53,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647096328] [2023-11-29 03:46:53,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:53,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:53,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:53,665 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:46:53,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:46:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:54,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:46:54,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 03:46:54,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:46:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 03:46:55,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647096328] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:46:55,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:46:55,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-29 03:46:55,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892417724] [2023-11-29 03:46:55,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:46:55,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 03:46:55,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:55,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 03:46:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:46:55,248 INFO L87 Difference]: Start difference. First operand 697 states and 1017 transitions. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 16 states have internal predecessors, (836), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 03:46:56,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:56,963 INFO L93 Difference]: Finished difference Result 2063 states and 3045 transitions. [2023-11-29 03:46:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:46:56,964 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 16 states have internal predecessors, (836), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 320 [2023-11-29 03:46:56,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:56,976 INFO L225 Difference]: With dead ends: 2063 [2023-11-29 03:46:56,976 INFO L226 Difference]: Without dead ends: 1651 [2023-11-29 03:46:56,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=677, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:46:56,979 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 8970 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8970 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:56,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8970 Valid, 2997 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 03:46:56,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2023-11-29 03:46:57,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1649. [2023-11-29 03:46:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1635 states have (on average 1.4666666666666666) internal successors, (2398), 1635 states have internal predecessors, (2398), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 03:46:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2422 transitions. [2023-11-29 03:46:57,052 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2422 transitions. Word has length 320 [2023-11-29 03:46:57,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:57,053 INFO L495 AbstractCegarLoop]: Abstraction has 1649 states and 2422 transitions. [2023-11-29 03:46:57,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 16 states have internal predecessors, (836), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 03:46:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2422 transitions. [2023-11-29 03:46:57,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-11-29 03:46:57,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:57,078 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:57,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:46:57,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:57,279 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:46:57,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:57,279 INFO L85 PathProgramCache]: Analyzing trace with hash -46096441, now seen corresponding path program 1 times [2023-11-29 03:46:57,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:57,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769723438] [2023-11-29 03:46:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:57,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:49:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:29,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 03:49:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:29,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 03:49:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 496 proven. 2 refuted. 0 times theorem prover too weak. 2873 trivial. 0 not checked. [2023-11-29 03:49:29,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:49:29,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769723438] [2023-11-29 03:49:29,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769723438] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:49:29,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831145547] [2023-11-29 03:49:29,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:49:29,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:49:29,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:49:29,115 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:49:29,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:51:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:07,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 3805 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 03:51:07,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:51:07,351 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 18 treesize of output 7 [2023-11-29 03:51:07,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:51:07,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 24 [2023-11-29 03:51:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 1347 proven. 137 refuted. 0 times theorem prover too weak. 1887 trivial. 0 not checked. [2023-11-29 03:51:07,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:51:08,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:51:08,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 24 [2023-11-29 03:51:14,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831145547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:51:14,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:51:14,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14] total 17 [2023-11-29 03:51:14,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798086861] [2023-11-29 03:51:14,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:51:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 03:51:14,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:51:14,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 03:51:14,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:51:14,468 INFO L87 Difference]: Start difference. First operand 1649 states and 2422 transitions. Second operand has 17 states, 16 states have (on average 21.125) internal successors, (338), 16 states have internal predecessors, (338), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:51:19,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:51:19,152 INFO L93 Difference]: Finished difference Result 3233 states and 4745 transitions. [2023-11-29 03:51:19,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:51:19,152 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 21.125) internal successors, (338), 16 states have internal predecessors, (338), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 771 [2023-11-29 03:51:19,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:51:19,162 INFO L225 Difference]: With dead ends: 3233 [2023-11-29 03:51:19,163 INFO L226 Difference]: Without dead ends: 1700 [2023-11-29 03:51:19,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1497 GetRequests, 1461 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 03:51:19,166 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 1132 mSDsluCounter, 6225 mSDsCounter, 0 mSdLazyCounter, 4151 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 6971 SdHoareTripleChecker+Invalid, 4164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:51:19,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 6971 Invalid, 4164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4151 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 03:51:19,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2023-11-29 03:51:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1681. [2023-11-29 03:51:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1666 states have (on average 1.4627851140456183) internal successors, (2437), 1667 states have internal predecessors, (2437), 12 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-29 03:51:19,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2471 transitions. [2023-11-29 03:51:19,233 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2471 transitions. Word has length 771 [2023-11-29 03:51:19,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:51:19,234 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2471 transitions. [2023-11-29 03:51:19,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 21.125) internal successors, (338), 16 states have internal predecessors, (338), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:51:19,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2471 transitions. [2023-11-29 03:51:19,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-11-29 03:51:19,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:51:19,262 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:51:19,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:51:19,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 03:51:19,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:51:19,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:51:19,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1320413825, now seen corresponding path program 1 times [2023-11-29 03:51:19,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:51:19,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749657275] [2023-11-29 03:51:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:51:19,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:51:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:20,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 03:51:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:20,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:51:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3376 backedges. 1336 proven. 0 refuted. 0 times theorem prover too weak. 2040 trivial. 0 not checked. [2023-11-29 03:51:20,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:51:20,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749657275] [2023-11-29 03:51:20,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749657275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:51:20,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:51:20,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:51:20,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664530442] [2023-11-29 03:51:20,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:51:20,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:51:20,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:51:20,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:51:20,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:51:20,387 INFO L87 Difference]: Start difference. First operand 1681 states and 2471 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:51:20,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:51:20,608 INFO L93 Difference]: Finished difference Result 3369 states and 4950 transitions. [2023-11-29 03:51:20,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:51:20,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 773 [2023-11-29 03:51:20,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:51:20,619 INFO L225 Difference]: With dead ends: 3369 [2023-11-29 03:51:20,620 INFO L226 Difference]: Without dead ends: 1753 [2023-11-29 03:51:20,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:51:20,623 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 4 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:51:20,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 697 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:51:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2023-11-29 03:51:20,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1743. [2023-11-29 03:51:20,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1743 states, 1728 states have (on average 1.4450231481481481) internal successors, (2497), 1729 states have internal predecessors, (2497), 12 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-29 03:51:20,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2531 transitions. [2023-11-29 03:51:20,721 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2531 transitions. Word has length 773 [2023-11-29 03:51:20,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:51:20,722 INFO L495 AbstractCegarLoop]: Abstraction has 1743 states and 2531 transitions. [2023-11-29 03:51:20,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:51:20,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2531 transitions. [2023-11-29 03:51:20,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-11-29 03:51:20,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:51:20,733 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:51:20,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:51:20,734 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:51:20,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:51:20,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2017520639, now seen corresponding path program 1 times [2023-11-29 03:51:20,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:51:20,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450862450] [2023-11-29 03:51:20,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:51:20,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:51:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:21,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 03:51:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:21,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:51:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3376 backedges. 1336 proven. 0 refuted. 0 times theorem prover too weak. 2040 trivial. 0 not checked. [2023-11-29 03:51:21,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:51:21,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450862450] [2023-11-29 03:51:21,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450862450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:51:21,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:51:21,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:51:21,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33498732] [2023-11-29 03:51:21,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:51:21,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:51:21,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:51:21,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:51:21,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:51:21,799 INFO L87 Difference]: Start difference. First operand 1743 states and 2531 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:51:22,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:51:22,076 INFO L93 Difference]: Finished difference Result 2997 states and 4267 transitions. [2023-11-29 03:51:22,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:51:22,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 773 [2023-11-29 03:51:22,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:51:22,084 INFO L225 Difference]: With dead ends: 2997 [2023-11-29 03:51:22,084 INFO L226 Difference]: Without dead ends: 1261 [2023-11-29 03:51:22,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:51:22,086 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 80 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:51:22,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 566 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:51:22,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2023-11-29 03:51:22,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1261. [2023-11-29 03:51:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1246 states have (on average 1.35553772070626) internal successors, (1689), 1247 states have internal predecessors, (1689), 12 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-29 03:51:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1723 transitions. [2023-11-29 03:51:22,121 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1723 transitions. Word has length 773 [2023-11-29 03:51:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:51:22,121 INFO L495 AbstractCegarLoop]: Abstraction has 1261 states and 1723 transitions. [2023-11-29 03:51:22,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:51:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1723 transitions. [2023-11-29 03:51:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-11-29 03:51:22,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:51:22,128 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 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] [2023-11-29 03:51:22,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:51:22,129 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:51:22,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:51:22,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1737017997, now seen corresponding path program 1 times [2023-11-29 03:51:22,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:51:22,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201902782] [2023-11-29 03:51:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:51:22,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:53:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:29,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 03:53:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:29,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:53:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3376 backedges. 559 proven. 7 refuted. 0 times theorem prover too weak. 2810 trivial. 0 not checked. [2023-11-29 03:53:29,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:53:29,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201902782] [2023-11-29 03:53:29,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201902782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:53:29,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049285854] [2023-11-29 03:53:29,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:53:29,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:53:29,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:53:29,753 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:53:29,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:53:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:41,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 3836 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 03:53:42,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:53:42,180 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 18 treesize of output 7 [2023-11-29 03:53:42,578 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:53:42,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 24 [2023-11-29 03:53:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3376 backedges. 883 proven. 32 refuted. 0 times theorem prover too weak. 2461 trivial. 0 not checked. [2023-11-29 03:53:42,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:53:43,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:53:43,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 24 [2023-11-29 03:53:44,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049285854] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:53:44,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:53:44,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 31 [2023-11-29 03:53:44,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512525307] [2023-11-29 03:53:44,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:53:44,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 03:53:44,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:53:44,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 03:53:44,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1507, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 03:53:44,996 INFO L87 Difference]: Start difference. First operand 1261 states and 1723 transitions. Second operand has 31 states, 28 states have (on average 9.857142857142858) internal successors, (276), 30 states have internal predecessors, (276), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:53:50,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:53:50,223 INFO L93 Difference]: Finished difference Result 2538 states and 3447 transitions. [2023-11-29 03:53:50,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 03:53:50,223 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 9.857142857142858) internal successors, (276), 30 states have internal predecessors, (276), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 774 [2023-11-29 03:53:50,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:53:50,230 INFO L225 Difference]: With dead ends: 2538 [2023-11-29 03:53:50,230 INFO L226 Difference]: Without dead ends: 1354 [2023-11-29 03:53:50,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1523 GetRequests, 1466 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=333, Invalid=2973, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 03:53:50,234 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 965 mSDsluCounter, 5525 mSDsCounter, 0 mSdLazyCounter, 3332 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 5840 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:53:50,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 5840 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3332 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-29 03:53:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2023-11-29 03:53:50,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1262. [2023-11-29 03:53:50,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1247 states have (on average 1.355252606255012) internal successors, (1690), 1248 states have internal predecessors, (1690), 12 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-29 03:53:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1724 transitions. [2023-11-29 03:53:50,291 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1724 transitions. Word has length 774 [2023-11-29 03:53:50,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:53:50,292 INFO L495 AbstractCegarLoop]: Abstraction has 1262 states and 1724 transitions. [2023-11-29 03:53:50,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 9.857142857142858) internal successors, (276), 30 states have internal predecessors, (276), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:53:50,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1724 transitions. [2023-11-29 03:53:50,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2023-11-29 03:53:50,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:53:50,302 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:53:50,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:53:50,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 03:53:50,504 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:53:50,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:53:50,504 INFO L85 PathProgramCache]: Analyzing trace with hash 933183689, now seen corresponding path program 2 times [2023-11-29 03:53:50,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:53:50,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981059591] [2023-11-29 03:53:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:53:50,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:15,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 03:55:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:15,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 03:55:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:15,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3386 backedges. 496 proven. 13 refuted. 0 times theorem prover too weak. 2877 trivial. 0 not checked. [2023-11-29 03:55:15,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:15,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981059591] [2023-11-29 03:55:15,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981059591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:15,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010690706] [2023-11-29 03:55:15,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:55:15,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:15,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:15,220 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:15,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:56:02,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:56:02,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:56:02,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 3867 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 03:56:02,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:02,605 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 18 treesize of output 7 [2023-11-29 03:56:02,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:56:02,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 24 [2023-11-29 03:56:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3386 backedges. 1825 proven. 573 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2023-11-29 03:56:03,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:56:03,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:56:03,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 24 [2023-11-29 03:56:18,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010690706] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:56:18,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:56:18,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 17] total 22 [2023-11-29 03:56:18,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735609432] [2023-11-29 03:56:18,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:56:18,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 03:56:18,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:18,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 03:56:18,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 03:56:18,404 INFO L87 Difference]: Start difference. First operand 1262 states and 1724 transitions. Second operand has 22 states, 21 states have (on average 23.571428571428573) internal successors, (495), 21 states have internal predecessors, (495), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:56:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:24,730 INFO L93 Difference]: Finished difference Result 2450 states and 3367 transitions. [2023-11-29 03:56:24,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 03:56:24,731 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 23.571428571428573) internal successors, (495), 21 states have internal predecessors, (495), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 777 [2023-11-29 03:56:24,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:24,737 INFO L225 Difference]: With dead ends: 2450 [2023-11-29 03:56:24,737 INFO L226 Difference]: Without dead ends: 1265 [2023-11-29 03:56:24,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1504 GetRequests, 1460 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=286, Invalid=1784, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 03:56:24,740 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 704 mSDsluCounter, 10366 mSDsCounter, 0 mSdLazyCounter, 4900 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 11149 SdHoareTripleChecker+Invalid, 4910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 4900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:24,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 11149 Invalid, 4910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 4900 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-29 03:56:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2023-11-29 03:56:24,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1263. [2023-11-29 03:56:24,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1248 states have (on average 1.3549679487179487) internal successors, (1691), 1249 states have internal predecessors, (1691), 12 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-29 03:56:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1725 transitions. [2023-11-29 03:56:24,780 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1725 transitions. Word has length 777 [2023-11-29 03:56:24,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:24,780 INFO L495 AbstractCegarLoop]: Abstraction has 1263 states and 1725 transitions. [2023-11-29 03:56:24,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 23.571428571428573) internal successors, (495), 21 states have internal predecessors, (495), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:56:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1725 transitions. [2023-11-29 03:56:24,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-11-29 03:56:24,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:24,788 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 6, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:56:24,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:56:24,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 03:56:24,988 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:56:24,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:24,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1027211381, now seen corresponding path program 3 times [2023-11-29 03:56:24,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:24,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055938088] [2023-11-29 03:56:24,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:24,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:03,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 03:59:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:03,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 03:59:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3401 backedges. 496 proven. 23 refuted. 0 times theorem prover too weak. 2882 trivial. 0 not checked. [2023-11-29 03:59:04,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:04,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055938088] [2023-11-29 03:59:04,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055938088] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:59:04,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338212987] [2023-11-29 03:59:04,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:59:04,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:04,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:59:04,007 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:59:04,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:59:05,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 03:59:05,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:59:05,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 03:59:05,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:28,204 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_y_46 Int) (v_z_48 Int) (v_y_48 Int)) (let ((.cse0 (* v_y_48 4294967296))) (and (= (+ 1099511627776 (* v_z_48 4294967039) .cse0 (* v_y_46 4294967296)) (* (mod (+ (* 4294967295 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) 4276993779) 4294967296) 256)) (<= 0 v_z_48) (= (+ (mod (+ 2690382803 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) 4294967296) (* v_z_48 4294967295) .cse0) 4294967296) (<= v_z_48 4294967295)))) is different from false [2023-11-29 03:59:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3401 backedges. 629 proven. 0 refuted. 0 times theorem prover too weak. 2772 trivial. 0 not checked. [2023-11-29 03:59:28,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:59:28,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338212987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:28,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:59:28,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-29 03:59:28,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854954122] [2023-11-29 03:59:28,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:28,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:59:28,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:28,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:59:28,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=110, Unknown=1, NotChecked=20, Total=156 [2023-11-29 03:59:28,226 INFO L87 Difference]: Start difference. First operand 1263 states and 1725 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:59:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:28,546 INFO L93 Difference]: Finished difference Result 2511 states and 3442 transitions. [2023-11-29 03:59:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:59:28,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 780 [2023-11-29 03:59:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:28,553 INFO L225 Difference]: With dead ends: 2511 [2023-11-29 03:59:28,553 INFO L226 Difference]: Without dead ends: 1283 [2023-11-29 03:59:28,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 778 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=29, Invalid=130, Unknown=1, NotChecked=22, Total=182 [2023-11-29 03:59:28,556 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 10 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:28,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 727 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 87 Unchecked, 0.3s Time] [2023-11-29 03:59:28,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2023-11-29 03:59:28,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1283. [2023-11-29 03:59:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1268 states have (on average 1.3414826498422714) internal successors, (1701), 1269 states have internal predecessors, (1701), 12 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-29 03:59:28,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1735 transitions. [2023-11-29 03:59:28,612 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1735 transitions. Word has length 780 [2023-11-29 03:59:28,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:28,613 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1735 transitions. [2023-11-29 03:59:28,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:59:28,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1735 transitions. [2023-11-29 03:59:28,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-11-29 03:59:28,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:28,623 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:59:28,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:59:28,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5389dc4-7902-4eba-86f9-cf6a712ed3b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:59:28,823 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:28,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:28,824 INFO L85 PathProgramCache]: Analyzing trace with hash 516346806, now seen corresponding path program 1 times [2023-11-29 03:59:28,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:28,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953616435] [2023-11-29 03:59:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:28,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:30,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 03:59:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:30,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 03:59:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3449 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 3142 trivial. 0 not checked. [2023-11-29 03:59:30,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:30,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953616435] [2023-11-29 03:59:30,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953616435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:30,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:59:30,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:59:30,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798613614] [2023-11-29 03:59:30,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:30,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:59:30,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:30,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:59:30,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:59:30,640 INFO L87 Difference]: Start difference. First operand 1283 states and 1735 transitions. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 6 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:59:31,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:31,070 INFO L93 Difference]: Finished difference Result 2563 states and 3492 transitions. [2023-11-29 03:59:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:59:31,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 6 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 793 [2023-11-29 03:59:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:31,075 INFO L225 Difference]: With dead ends: 2563 [2023-11-29 03:59:31,076 INFO L226 Difference]: Without dead ends: 1319 [2023-11-29 03:59:31,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:59:31,077 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 11 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:31,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 750 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:59:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-11-29 03:59:31,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1311. [2023-11-29 03:59:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1296 states have (on average 1.3395061728395061) internal successors, (1736), 1297 states have internal predecessors, (1736), 12 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-29 03:59:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1770 transitions. [2023-11-29 03:59:31,123 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1770 transitions. Word has length 793 [2023-11-29 03:59:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:31,123 INFO L495 AbstractCegarLoop]: Abstraction has 1311 states and 1770 transitions. [2023-11-29 03:59:31,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 6 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:59:31,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1770 transitions. [2023-11-29 03:59:31,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-11-29 03:59:31,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:31,131 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 7, 7, 7, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:59:31,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 03:59:31,131 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:31,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:31,131 INFO L85 PathProgramCache]: Analyzing trace with hash 311662463, now seen corresponding path program 1 times [2023-11-29 03:59:31,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:31,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290198447] [2023-11-29 03:59:31,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:31,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:32,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 03:59:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 03:59:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3428 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 3097 trivial. 0 not checked. [2023-11-29 03:59:32,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:32,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290198447] [2023-11-29 03:59:32,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290198447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:32,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:59:32,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:59:32,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954610681] [2023-11-29 03:59:32,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:32,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:59:32,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:59:32,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:59:32,625 INFO L87 Difference]: Start difference. First operand 1311 states and 1770 transitions. Second operand has 8 states, 8 states have (on average 17.25) internal successors, (138), 7 states have internal predecessors, (138), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:59:33,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:33,106 INFO L93 Difference]: Finished difference Result 2624 states and 3572 transitions. [2023-11-29 03:59:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:59:33,107 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.25) internal successors, (138), 7 states have internal predecessors, (138), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 793 [2023-11-29 03:59:33,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:33,113 INFO L225 Difference]: With dead ends: 2624 [2023-11-29 03:59:33,113 INFO L226 Difference]: Without dead ends: 1362 [2023-11-29 03:59:33,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:59:33,115 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 15 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:33,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 869 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:59:33,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2023-11-29 03:59:33,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1351. [2023-11-29 03:59:33,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1336 states have (on average 1.3368263473053892) internal successors, (1786), 1337 states have internal predecessors, (1786), 12 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-29 03:59:33,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1820 transitions. [2023-11-29 03:59:33,156 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 1820 transitions. Word has length 793 [2023-11-29 03:59:33,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:33,156 INFO L495 AbstractCegarLoop]: Abstraction has 1351 states and 1820 transitions. [2023-11-29 03:59:33,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.25) internal successors, (138), 7 states have internal predecessors, (138), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:59:33,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 1820 transitions. [2023-11-29 03:59:33,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2023-11-29 03:59:33,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:33,163 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 7, 7, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:59:33,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 03:59:33,164 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:33,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:33,164 INFO L85 PathProgramCache]: Analyzing trace with hash -219333871, now seen corresponding path program 1 times [2023-11-29 03:59:33,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:33,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933522450] [2023-11-29 03:59:33,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:33,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:35,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:59:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:35,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 03:59:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3470 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 3112 trivial. 0 not checked. [2023-11-29 03:59:35,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:35,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933522450] [2023-11-29 03:59:35,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933522450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:35,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:59:35,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 03:59:35,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954181008] [2023-11-29 03:59:35,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:35,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:59:35,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:35,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:59:35,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:59:35,329 INFO L87 Difference]: Start difference. First operand 1351 states and 1820 transitions. Second operand has 10 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:59:36,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:36,013 INFO L93 Difference]: Finished difference Result 2724 states and 3704 transitions. [2023-11-29 03:59:36,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:59:36,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 800 [2023-11-29 03:59:36,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:36,020 INFO L225 Difference]: With dead ends: 2724 [2023-11-29 03:59:36,020 INFO L226 Difference]: Without dead ends: 1422 [2023-11-29 03:59:36,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:59:36,022 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 30 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:36,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1163 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:59:36,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2023-11-29 03:59:36,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1400. [2023-11-29 03:59:36,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1385 states have (on average 1.3350180505415163) internal successors, (1849), 1386 states have internal predecessors, (1849), 12 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-29 03:59:36,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1883 transitions. [2023-11-29 03:59:36,061 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1883 transitions. Word has length 800 [2023-11-29 03:59:36,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:36,062 INFO L495 AbstractCegarLoop]: Abstraction has 1400 states and 1883 transitions. [2023-11-29 03:59:36,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:59:36,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1883 transitions. [2023-11-29 03:59:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2023-11-29 03:59:36,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:36,070 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 7, 7, 7, 7, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:59:36,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 03:59:36,070 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:36,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:36,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1368978571, now seen corresponding path program 1 times [2023-11-29 03:59:36,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:36,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679545659] [2023-11-29 03:59:36,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:36,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:59:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:37,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:59:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:37,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 03:59:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:59:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3449 backedges. 941 proven. 0 refuted. 0 times theorem prover too weak. 2508 trivial. 0 not checked. [2023-11-29 03:59:37,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:59:37,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679545659] [2023-11-29 03:59:37,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679545659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:59:37,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:59:37,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:59:37,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033544449] [2023-11-29 03:59:37,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:59:37,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:59:37,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:59:37,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:59:37,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:59:37,546 INFO L87 Difference]: Start difference. First operand 1400 states and 1883 transitions. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 6 states have internal predecessors, (207), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:59:37,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:37,903 INFO L93 Difference]: Finished difference Result 2788 states and 3775 transitions. [2023-11-29 03:59:37,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:59:37,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 6 states have internal predecessors, (207), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 800 [2023-11-29 03:59:37,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:37,910 INFO L225 Difference]: With dead ends: 2788 [2023-11-29 03:59:37,911 INFO L226 Difference]: Without dead ends: 1441 [2023-11-29 03:59:37,912 INFO L412 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 [2023-11-29 03:59:37,913 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 6 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:37,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 677 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:59:37,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2023-11-29 03:59:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1430. [2023-11-29 03:59:37,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1415 states have (on average 1.3279151943462897) internal successors, (1879), 1416 states have internal predecessors, (1879), 12 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-29 03:59:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1913 transitions. [2023-11-29 03:59:37,972 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1913 transitions. Word has length 800 [2023-11-29 03:59:37,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:37,973 INFO L495 AbstractCegarLoop]: Abstraction has 1430 states and 1913 transitions. [2023-11-29 03:59:37,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 6 states have internal predecessors, (207), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:59:37,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1913 transitions. [2023-11-29 03:59:37,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2023-11-29 03:59:37,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:37,982 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 7, 7, 7, 7, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:59:37,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 03:59:37,982 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:59:37,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1037741709, now seen corresponding path program 1 times [2023-11-29 03:59:37,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:59:37,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891416961] [2023-11-29 03:59:37,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:59:37,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms