./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC --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 b073cc2eb0b196ef0c05471292790dfe61756b839736ddb49ad92ee60513afd2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:07:06,345 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:07:06,425 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:07:06,433 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:07:06,433 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:07:06,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:07:06,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:07:06,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:07:06,475 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:07:06,475 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:07:06,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:07:06,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:07:06,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:07:06,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:07:06,477 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:07:06,478 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:07:06,478 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:07:06,478 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:07:06,479 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:07:06,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:07:06,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:07:06,479 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:07:06,480 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:07:06,480 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:07:06,480 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:07:06,480 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:07:06,480 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:07:06,481 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:07:06,481 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:07:06,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:07:06,482 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:07:06,482 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:07:06,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:07:06,482 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:07:06,482 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:07:06,482 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:07:06,482 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:07:06,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:07:06,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:07:06,483 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:07:06,483 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:07:06,483 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:07:06,483 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:07:06,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:07:06,483 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:07:06,483 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:07:06,483 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:07:06,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:07:06,483 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC 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 -> b073cc2eb0b196ef0c05471292790dfe61756b839736ddb49ad92ee60513afd2 [2024-11-23 23:07:06,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:07:06,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:07:06,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:07:06,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:07:06,855 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:07:06,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i [2024-11-23 23:07:10,300 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/data/220691438/432ac280406f4a24aa1006dab62d734c/FLAG595721306 [2024-11-23 23:07:10,670 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:07:10,676 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i [2024-11-23 23:07:10,699 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/data/220691438/432ac280406f4a24aa1006dab62d734c/FLAG595721306 [2024-11-23 23:07:10,751 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/data/220691438/432ac280406f4a24aa1006dab62d734c [2024-11-23 23:07:10,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:07:10,759 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:07:10,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:07:10,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:07:10,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:07:10,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:07:10" (1/1) ... [2024-11-23 23:07:10,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ce855b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:10, skipping insertion in model container [2024-11-23 23:07:10,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:07:10" (1/1) ... [2024-11-23 23:07:10,796 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:07:11,006 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i[821,834] [2024-11-23 23:07:11,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:07:11,048 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:07:11,063 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i[821,834] [2024-11-23 23:07:11,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:07:11,092 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:07:11,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11 WrapperNode [2024-11-23 23:07:11,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:07:11,094 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:07:11,094 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:07:11,094 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:07:11,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11" (1/1) ... [2024-11-23 23:07:11,111 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11" (1/1) ... [2024-11-23 23:07:11,132 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2024-11-23 23:07:11,133 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:07:11,134 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:07:11,134 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:07:11,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:07:11,145 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11" (1/1) ... [2024-11-23 23:07:11,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11" (1/1) ... [2024-11-23 23:07:11,147 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11" (1/1) ... [2024-11-23 23:07:11,161 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 3, 1]. [2024-11-23 23:07:11,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11" (1/1) ... [2024-11-23 23:07:11,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11" (1/1) ... [2024-11-23 23:07:11,168 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11" (1/1) ... [2024-11-23 23:07:11,173 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11" (1/1) ... [2024-11-23 23:07:11,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11" (1/1) ... [2024-11-23 23:07:11,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11" (1/1) ... [2024-11-23 23:07:11,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11" (1/1) ... [2024-11-23 23:07:11,187 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:07:11,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:07:11,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:07:11,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:07:11,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11" (1/1) ... [2024-11-23 23:07:11,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:07:11,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:11,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:07:11,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:07:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:07:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:07:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:07:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:07:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:07:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:07:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:07:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:07:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:07:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:07:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:07:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:07:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:07:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:07:11,361 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:07:11,363 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:07:11,599 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-23 23:07:11,599 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:07:11,618 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:07:11,618 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:07:11,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:07:11 BoogieIcfgContainer [2024-11-23 23:07:11,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:07:11,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:07:11,624 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:07:11,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:07:11,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:07:10" (1/3) ... [2024-11-23 23:07:11,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55381c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:07:11, skipping insertion in model container [2024-11-23 23:07:11,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:11" (2/3) ... [2024-11-23 23:07:11,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55381c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:07:11, skipping insertion in model container [2024-11-23 23:07:11,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:07:11" (3/3) ... [2024-11-23 23:07:11,637 INFO L128 eAbstractionObserver]: Analyzing ICFG array_ptr_single_elem_init-2.i [2024-11-23 23:07:11,658 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:07:11,660 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_ptr_single_elem_init-2.i that has 1 procedures, 21 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-23 23:07:11,741 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:07:11,756 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c29bb00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:07:11,756 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:07:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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) [2024-11-23 23:07:11,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-23 23:07:11,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:11,767 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:11,767 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:11,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:11,773 INFO L85 PathProgramCache]: Analyzing trace with hash 975489773, now seen corresponding path program 1 times [2024-11-23 23:07:11,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:11,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729562734] [2024-11-23 23:07:11,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:11,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:11,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:11,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729562734] [2024-11-23 23:07:11,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729562734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:11,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:11,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:07:11,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638822331] [2024-11-23 23:07:11,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:11,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:07:11,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:11,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:07:11,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:07:11,987 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-23 23:07:12,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:12,004 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2024-11-23 23:07:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:07:12,006 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-11-23 23:07:12,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:12,015 INFO L225 Difference]: With dead ends: 33 [2024-11-23 23:07:12,017 INFO L226 Difference]: Without dead ends: 17 [2024-11-23 23:07:12,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:07:12,026 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:12,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:07:12,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-23 23:07:12,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-23 23:07:12,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2024-11-23 23:07:12,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-11-23 23:07:12,071 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 8 [2024-11-23 23:07:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:12,072 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-23 23:07:12,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-23 23:07:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-11-23 23:07:12,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-23 23:07:12,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:12,073 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:12,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:07:12,073 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:12,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:12,074 INFO L85 PathProgramCache]: Analyzing trace with hash 288390149, now seen corresponding path program 1 times [2024-11-23 23:07:12,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:12,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413392756] [2024-11-23 23:07:12,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:12,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:12,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:12,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413392756] [2024-11-23 23:07:12,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413392756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:12,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:12,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:07:12,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122966934] [2024-11-23 23:07:12,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:12,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:07:12,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:12,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:07:12,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:07:12,251 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-23 23:07:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:12,320 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-11-23 23:07:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:07:12,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-23 23:07:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:12,321 INFO L225 Difference]: With dead ends: 35 [2024-11-23 23:07:12,321 INFO L226 Difference]: Without dead ends: 27 [2024-11-23 23:07:12,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:07:12,323 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:12,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:07:12,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-23 23:07:12,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2024-11-23 23:07:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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) [2024-11-23 23:07:12,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-23 23:07:12,329 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 8 [2024-11-23 23:07:12,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:12,330 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-23 23:07:12,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-23 23:07:12,330 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-11-23 23:07:12,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-23 23:07:12,331 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:12,331 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:12,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:07:12,332 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:12,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:12,332 INFO L85 PathProgramCache]: Analyzing trace with hash -808397521, now seen corresponding path program 1 times [2024-11-23 23:07:12,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:12,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521669488] [2024-11-23 23:07:12,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:12,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:07:12,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:12,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521669488] [2024-11-23 23:07:12,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521669488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:12,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597806892] [2024-11-23 23:07:12,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:12,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:12,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:12,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:12,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:07:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:12,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:07:12,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:07:12,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:07:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:07:12,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597806892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:07:12,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:07:12,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-23 23:07:12,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090722015] [2024-11-23 23:07:12,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:07:12,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:07:12,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:12,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:07:12,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:07:12,846 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2024-11-23 23:07:13,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:13,046 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2024-11-23 23:07:13,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:07:13,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 17 [2024-11-23 23:07:13,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:13,048 INFO L225 Difference]: With dead ends: 59 [2024-11-23 23:07:13,048 INFO L226 Difference]: Without dead ends: 49 [2024-11-23 23:07:13,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:07:13,050 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 51 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:13,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 27 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:07:13,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-23 23:07:13,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2024-11-23 23:07:13,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 states have internal predecessors, (58), 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) [2024-11-23 23:07:13,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2024-11-23 23:07:13,067 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 17 [2024-11-23 23:07:13,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:13,067 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2024-11-23 23:07:13,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2024-11-23 23:07:13,068 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2024-11-23 23:07:13,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 23:07:13,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:13,069 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:13,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:07:13,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-23 23:07:13,274 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:13,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:13,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1913112731, now seen corresponding path program 2 times [2024-11-23 23:07:13,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:13,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912340340] [2024-11-23 23:07:13,275 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:07:13,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:13,342 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:07:13,347 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 23:07:13,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:13,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912340340] [2024-11-23 23:07:13,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912340340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:13,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684197214] [2024-11-23 23:07:13,643 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:07:13,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:13,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:13,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:13,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:07:13,756 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:07:13,756 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:13,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:07:13,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 23:07:13,839 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:07:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 23:07:14,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684197214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:07:14,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:07:14,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-23 23:07:14,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826671508] [2024-11-23 23:07:14,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:07:14,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:07:14,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:14,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:07:14,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:07:14,053 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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) [2024-11-23 23:07:14,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:14,440 INFO L93 Difference]: Finished difference Result 122 states and 168 transitions. [2024-11-23 23:07:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:07:14,440 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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 38 [2024-11-23 23:07:14,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:14,444 INFO L225 Difference]: With dead ends: 122 [2024-11-23 23:07:14,445 INFO L226 Difference]: Without dead ends: 109 [2024-11-23 23:07:14,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:07:14,447 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 123 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:14,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 47 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:07:14,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-23 23:07:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 95. [2024-11-23 23:07:14,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.351063829787234) internal successors, (127), 94 states have internal predecessors, (127), 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) [2024-11-23 23:07:14,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 127 transitions. [2024-11-23 23:07:14,477 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 127 transitions. Word has length 38 [2024-11-23 23:07:14,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:14,477 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 127 transitions. [2024-11-23 23:07:14,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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) [2024-11-23 23:07:14,477 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 127 transitions. [2024-11-23 23:07:14,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-23 23:07:14,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:14,483 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:14,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:07:14,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:14,688 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:14,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:14,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1323187385, now seen corresponding path program 3 times [2024-11-23 23:07:14,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:14,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850444475] [2024-11-23 23:07:14,689 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:07:14,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:14,783 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-23 23:07:14,788 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-23 23:07:15,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:15,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850444475] [2024-11-23 23:07:15,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850444475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:15,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836567962] [2024-11-23 23:07:15,127 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:07:15,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:15,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:15,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:15,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:07:15,258 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-23 23:07:15,258 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:15,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:07:15,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-23 23:07:15,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:07:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-23 23:07:15,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836567962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:07:15,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:07:15,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-23 23:07:15,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077061613] [2024-11-23 23:07:15,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:07:15,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:07:15,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:15,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:07:15,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:07:15,523 INFO L87 Difference]: Start difference. First operand 95 states and 127 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 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) [2024-11-23 23:07:15,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:15,945 INFO L93 Difference]: Finished difference Result 159 states and 210 transitions. [2024-11-23 23:07:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:07:15,946 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 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 83 [2024-11-23 23:07:15,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:15,948 INFO L225 Difference]: With dead ends: 159 [2024-11-23 23:07:15,950 INFO L226 Difference]: Without dead ends: 137 [2024-11-23 23:07:15,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:07:15,952 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 380 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:15,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 42 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:07:15,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-23 23:07:15,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 130. [2024-11-23 23:07:15,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.302325581395349) internal successors, (168), 129 states have internal predecessors, (168), 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) [2024-11-23 23:07:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 168 transitions. [2024-11-23 23:07:15,977 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 168 transitions. Word has length 83 [2024-11-23 23:07:15,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:15,978 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 168 transitions. [2024-11-23 23:07:15,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 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) [2024-11-23 23:07:15,978 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 168 transitions. [2024-11-23 23:07:15,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-23 23:07:15,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:15,980 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:15,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:07:16,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:16,181 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:16,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:16,182 INFO L85 PathProgramCache]: Analyzing trace with hash 275360357, now seen corresponding path program 4 times [2024-11-23 23:07:16,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:16,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004047377] [2024-11-23 23:07:16,182 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:07:16,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:16,235 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:07:16,235 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:16,921 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-23 23:07:16,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:16,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004047377] [2024-11-23 23:07:16,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004047377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:16,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228446015] [2024-11-23 23:07:16,922 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:07:16,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:16,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:16,929 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:16,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:07:17,099 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:07:17,099 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:17,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 23:07:17,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-23 23:07:17,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:07:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-23 23:07:17,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228446015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:07:17,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:07:17,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 28 [2024-11-23 23:07:17,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765282625] [2024-11-23 23:07:17,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:07:17,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-23 23:07:17,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:17,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-23 23:07:17,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2024-11-23 23:07:17,939 INFO L87 Difference]: Start difference. First operand 130 states and 168 transitions. Second operand has 28 states, 28 states have (on average 5.571428571428571) internal successors, (156), 28 states have internal predecessors, (156), 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) [2024-11-23 23:07:18,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:18,711 INFO L93 Difference]: Finished difference Result 312 states and 420 transitions. [2024-11-23 23:07:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-23 23:07:18,712 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.571428571428571) internal successors, (156), 28 states have internal predecessors, (156), 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 116 [2024-11-23 23:07:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:18,715 INFO L225 Difference]: With dead ends: 312 [2024-11-23 23:07:18,715 INFO L226 Difference]: Without dead ends: 269 [2024-11-23 23:07:18,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2024-11-23 23:07:18,717 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 387 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:18,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 75 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:07:18,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-23 23:07:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 231. [2024-11-23 23:07:18,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.3521739130434782) internal successors, (311), 230 states have internal predecessors, (311), 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) [2024-11-23 23:07:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 311 transitions. [2024-11-23 23:07:18,743 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 311 transitions. Word has length 116 [2024-11-23 23:07:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:18,744 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 311 transitions. [2024-11-23 23:07:18,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.571428571428571) internal successors, (156), 28 states have internal predecessors, (156), 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) [2024-11-23 23:07:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 311 transitions. [2024-11-23 23:07:18,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-23 23:07:18,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:18,751 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:18,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:07:18,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:18,952 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:18,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:18,952 INFO L85 PathProgramCache]: Analyzing trace with hash 5494215, now seen corresponding path program 5 times [2024-11-23 23:07:18,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:18,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069225515] [2024-11-23 23:07:18,953 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:07:18,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:19,162 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2024-11-23 23:07:19,162 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 0 proven. 1976 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-23 23:07:21,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:21,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069225515] [2024-11-23 23:07:21,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069225515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:21,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035241735] [2024-11-23 23:07:21,015 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:07:21,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:21,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:21,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:21,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:07:22,698 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2024-11-23 23:07:22,698 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:22,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 23:07:22,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 1976 trivial. 0 not checked. [2024-11-23 23:07:22,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:07:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 1976 trivial. 0 not checked. [2024-11-23 23:07:23,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035241735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:07:23,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:07:23,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 16, 16] total 43 [2024-11-23 23:07:23,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974539322] [2024-11-23 23:07:23,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:07:23,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-23 23:07:23,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:23,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-23 23:07:23,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-23 23:07:23,731 INFO L87 Difference]: Start difference. First operand 231 states and 311 transitions. Second operand has 43 states, 43 states have (on average 6.0) internal successors, (258), 43 states have internal predecessors, (258), 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) [2024-11-23 23:07:25,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:25,057 INFO L93 Difference]: Finished difference Result 473 states and 645 transitions. [2024-11-23 23:07:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-23 23:07:25,058 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.0) internal successors, (258), 43 states have internal predecessors, (258), 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 203 [2024-11-23 23:07:25,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:25,062 INFO L225 Difference]: With dead ends: 473 [2024-11-23 23:07:25,062 INFO L226 Difference]: Without dead ends: 427 [2024-11-23 23:07:25,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-23 23:07:25,065 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 791 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:25,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 108 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:07:25,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-23 23:07:25,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 420. [2024-11-23 23:07:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.3007159904534606) internal successors, (545), 419 states have internal predecessors, (545), 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) [2024-11-23 23:07:25,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 545 transitions. [2024-11-23 23:07:25,096 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 545 transitions. Word has length 203 [2024-11-23 23:07:25,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:25,097 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 545 transitions. [2024-11-23 23:07:25,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.0) internal successors, (258), 43 states have internal predecessors, (258), 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) [2024-11-23 23:07:25,098 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 545 transitions. [2024-11-23 23:07:25,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-23 23:07:25,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:25,105 INFO L218 NwaCegarLoop]: trace histogram [42, 41, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:25,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:07:25,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:25,310 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:25,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:25,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1571090449, now seen corresponding path program 6 times [2024-11-23 23:07:25,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:25,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881992452] [2024-11-23 23:07:25,313 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 23:07:25,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:25,728 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2024-11-23 23:07:25,728 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 4961 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2024-11-23 23:07:29,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:29,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881992452] [2024-11-23 23:07:29,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881992452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:29,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132951840] [2024-11-23 23:07:29,118 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 23:07:29,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:29,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:29,120 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:29,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:09:56,451 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2024-11-23 23:09:56,451 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:09:56,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-23 23:09:56,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 4961 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2024-11-23 23:09:57,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:10:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 4961 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2024-11-23 23:10:01,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132951840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:10:01,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:10:01,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 87 [2024-11-23 23:10:01,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568460352] [2024-11-23 23:10:01,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:10:01,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-11-23 23:10:01,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:10:01,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-11-23 23:10:01,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2024-11-23 23:10:01,056 INFO L87 Difference]: Start difference. First operand 420 states and 545 transitions. Second operand has 87 states, 87 states have (on average 5.873563218390805) internal successors, (511), 87 states have internal predecessors, (511), 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) [2024-11-23 23:10:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:10:05,924 INFO L93 Difference]: Finished difference Result 979 states and 1319 transitions. [2024-11-23 23:10:05,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-23 23:10:05,925 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 5.873563218390805) internal successors, (511), 87 states have internal predecessors, (511), 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 377 [2024-11-23 23:10:05,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:10:05,931 INFO L225 Difference]: With dead ends: 979 [2024-11-23 23:10:05,931 INFO L226 Difference]: Without dead ends: 849 [2024-11-23 23:10:05,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2024-11-23 23:10:05,935 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 1797 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:10:05,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 201 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 23:10:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-23 23:10:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 724. [2024-11-23 23:10:05,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 1.3526970954356847) internal successors, (978), 723 states have internal predecessors, (978), 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) [2024-11-23 23:10:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 978 transitions. [2024-11-23 23:10:05,973 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 978 transitions. Word has length 377 [2024-11-23 23:10:05,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:10:05,974 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 978 transitions. [2024-11-23 23:10:05,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.873563218390805) internal successors, (511), 87 states have internal predecessors, (511), 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) [2024-11-23 23:10:05,975 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 978 transitions. [2024-11-23 23:10:06,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2024-11-23 23:10:06,005 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:10:06,005 INFO L218 NwaCegarLoop]: trace histogram [84, 84, 84, 84, 84, 84, 43, 42, 42, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:10:06,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:10:06,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:10:06,206 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:10:06,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:10:06,207 INFO L85 PathProgramCache]: Analyzing trace with hash -306111771, now seen corresponding path program 7 times [2024-11-23 23:10:06,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:10:06,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532384576] [2024-11-23 23:10:06,207 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 23:10:06,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:10:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:10:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 23667 backedges. 0 proven. 21000 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2024-11-23 23:10:16,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:10:16,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532384576] [2024-11-23 23:10:16,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532384576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:10:16,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224257771] [2024-11-23 23:10:16,848 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 23:10:16,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:10:16,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:10:16,851 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:10:16,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:10:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:10:17,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-23 23:10:17,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:10:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 23667 backedges. 0 proven. 21000 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2024-11-23 23:10:18,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:10:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 23667 backedges. 0 proven. 21000 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2024-11-23 23:10:30,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224257771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:10:30,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:10:30,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 173 [2024-11-23 23:10:30,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816820680] [2024-11-23 23:10:30,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:10:30,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2024-11-23 23:10:30,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:10:30,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2024-11-23 23:10:30,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2024-11-23 23:10:30,108 INFO L87 Difference]: Start difference. First operand 724 states and 978 transitions. Second operand has 173 states, 173 states have (on average 5.936416184971098) internal successors, (1027), 173 states have internal predecessors, (1027), 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) [2024-11-23 23:11:06,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:06,216 INFO L93 Difference]: Finished difference Result 1842 states and 2568 transitions. [2024-11-23 23:11:06,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2024-11-23 23:11:06,217 INFO L78 Accepts]: Start accepts. Automaton has has 173 states, 173 states have (on average 5.936416184971098) internal successors, (1027), 173 states have internal predecessors, (1027), 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 638 [2024-11-23 23:11:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:06,225 INFO L225 Difference]: With dead ends: 1842 [2024-11-23 23:11:06,225 INFO L226 Difference]: Without dead ends: 1709 [2024-11-23 23:11:06,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1361 GetRequests, 1190 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2024-11-23 23:11:06,235 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 4290 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 1111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 2998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1111 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:06,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4290 Valid, 386 Invalid, 2998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1111 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-23 23:11:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2024-11-23 23:11:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1455. [2024-11-23 23:11:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 1.3528198074277855) internal successors, (1967), 1454 states have internal predecessors, (1967), 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) [2024-11-23 23:11:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1967 transitions. [2024-11-23 23:11:06,285 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1967 transitions. Word has length 638 [2024-11-23 23:11:06,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:06,286 INFO L471 AbstractCegarLoop]: Abstraction has 1455 states and 1967 transitions. [2024-11-23 23:11:06,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 173 states, 173 states have (on average 5.936416184971098) internal successors, (1027), 173 states have internal predecessors, (1027), 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) [2024-11-23 23:11:06,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1967 transitions. [2024-11-23 23:11:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1284 [2024-11-23 23:11:06,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:06,347 INFO L218 NwaCegarLoop]: trace histogram [170, 170, 170, 170, 170, 170, 86, 85, 85, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:06,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:11:06,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:11:06,548 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:06,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:06,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1597211577, now seen corresponding path program 8 times [2024-11-23 23:11:06,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:06,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79966826] [2024-11-23 23:11:06,550 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:11:06,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:06,963 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:11:06,963 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:11:44,726 INFO L134 CoverageAnalysis]: Checked inductivity of 97240 backedges. 0 proven. 86360 refuted. 0 times theorem prover too weak. 10880 trivial. 0 not checked. [2024-11-23 23:11:44,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:44,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79966826] [2024-11-23 23:11:44,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79966826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:11:44,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648305764] [2024-11-23 23:11:44,727 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:11:44,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:11:44,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:11:44,731 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:11:44,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:11:45,548 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:11:45,549 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:11:45,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 2780 conjuncts, 172 conjuncts are in the unsatisfiable core [2024-11-23 23:11:45,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:11:47,216 INFO L134 CoverageAnalysis]: Checked inductivity of 97240 backedges. 0 proven. 86360 refuted. 0 times theorem prover too weak. 10880 trivial. 0 not checked. [2024-11-23 23:11:47,216 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:12:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 97240 backedges. 0 proven. 86360 refuted. 0 times theorem prover too weak. 10880 trivial. 0 not checked. [2024-11-23 23:12:31,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648305764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:12:31,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:12:31,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [173, 173, 173] total 345 [2024-11-23 23:12:31,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419515508] [2024-11-23 23:12:31,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:12:31,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 345 states [2024-11-23 23:12:31,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:31,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 345 interpolants. [2024-11-23 23:12:31,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59340, Invalid=59340, Unknown=0, NotChecked=0, Total=118680 [2024-11-23 23:12:31,854 INFO L87 Difference]: Start difference. First operand 1455 states and 1967 transitions. Second operand has 345 states, 345 states have (on average 5.9681159420289855) internal successors, (2059), 345 states have internal predecessors, (2059), 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) [2024-11-23 23:20:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:19,520 INFO L93 Difference]: Finished difference Result 3691 states and 5148 transitions. [2024-11-23 23:20:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 344 states. [2024-11-23 23:20:19,522 INFO L78 Accepts]: Start accepts. Automaton has has 345 states, 345 states have (on average 5.9681159420289855) internal successors, (2059), 345 states have internal predecessors, (2059), 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 1283 [2024-11-23 23:20:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:19,534 INFO L225 Difference]: With dead ends: 3691 [2024-11-23 23:20:19,534 INFO L226 Difference]: Without dead ends: 3429 [2024-11-23 23:20:19,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2737 GetRequests, 2394 SyntacticMatches, 0 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 57.9s TimeCoverageRelationStatistics Valid=59340, Invalid=59340, Unknown=0, NotChecked=0, Total=118680 [2024-11-23 23:20:19,542 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9297 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 3791 mSolverCounterSat, 2233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9297 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 6024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2233 IncrementalHoareTripleChecker+Valid, 3791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:19,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9297 Valid, 736 Invalid, 6024 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2233 Valid, 3791 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-23 23:20:19,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2024-11-23 23:20:19,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2917. [2024-11-23 23:20:19,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2916 states have (on average 1.352880658436214) internal successors, (3945), 2916 states have internal predecessors, (3945), 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) [2024-11-23 23:20:19,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3945 transitions. [2024-11-23 23:20:19,617 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3945 transitions. Word has length 1283 [2024-11-23 23:20:19,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:19,618 INFO L471 AbstractCegarLoop]: Abstraction has 2917 states and 3945 transitions. [2024-11-23 23:20:19,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 345 states, 345 states have (on average 5.9681159420289855) internal successors, (2059), 345 states have internal predecessors, (2059), 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) [2024-11-23 23:20:19,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3945 transitions. [2024-11-23 23:20:19,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2574 [2024-11-23 23:20:19,665 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:19,666 INFO L218 NwaCegarLoop]: trace histogram [342, 342, 342, 342, 342, 342, 172, 171, 171, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:19,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 23:20:19,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 23:20:19,870 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:19,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:19,871 INFO L85 PathProgramCache]: Analyzing trace with hash 602043175, now seen corresponding path program 9 times [2024-11-23 23:20:19,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:19,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651065152] [2024-11-23 23:20:19,871 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:20:19,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:22,456 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 172 check-sat command(s) [2024-11-23 23:20:22,456 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:20:56,641 INFO L134 CoverageAnalysis]: Checked inductivity of 394155 backedges. 0 proven. 43947 refuted. 0 times theorem prover too weak. 350208 trivial. 0 not checked. [2024-11-23 23:20:56,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:56,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651065152] [2024-11-23 23:20:56,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651065152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:20:56,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98272434] [2024-11-23 23:20:56,642 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:20:56,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:56,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:56,644 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:20:56,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f60cbc6-3974-4bb8-bc77-cc2894cd722a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process