./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme --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 08a64b64599ceefef00723a17bd9cad66dbb7d4e6f08f1e5c61a19e368f8af19 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:44:16,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:44:16,245 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:44:16,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:44:16,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:44:16,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:44:16,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:44:16,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:44:16,288 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:44:16,289 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:44:16,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:44:16,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:44:16,292 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:44:16,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:44:16,293 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:44:16,294 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:44:16,294 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:44:16,295 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:44:16,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:44:16,296 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:44:16,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:44:16,298 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:44:16,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:44:16,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:44:16,299 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:44:16,300 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:44:16,300 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:44:16,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:44:16,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:44:16,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:44:16,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:44:16,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:16,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:44:16,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:44:16,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:44:16,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:44:16,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:44:16,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:44:16,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:44:16,306 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:44:16,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:44:16,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:44:16,307 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08a64b64599ceefef00723a17bd9cad66dbb7d4e6f08f1e5c61a19e368f8af19 [2023-11-26 10:44:16,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:44:16,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:44:16,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:44:16,684 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:44:16,685 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:44:16,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-1.i [2023-11-26 10:44:20,258 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:44:20,586 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:44:20,587 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-1.i [2023-11-26 10:44:20,598 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/data/925145499/d60653fce3a54f96a142e29ec4dc3c50/FLAG3c8008e6b [2023-11-26 10:44:20,615 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/data/925145499/d60653fce3a54f96a142e29ec4dc3c50 [2023-11-26 10:44:20,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:44:20,620 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:44:20,622 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:20,622 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:44:20,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:44:20,632 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:20" (1/1) ... [2023-11-26 10:44:20,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3bbdc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20, skipping insertion in model container [2023-11-26 10:44:20,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:20" (1/1) ... [2023-11-26 10:44:20,666 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:44:20,850 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-1.i[998,1011] [2023-11-26 10:44:20,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:20,893 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:44:20,909 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-1.i[998,1011] [2023-11-26 10:44:20,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:20,941 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:44:20,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20 WrapperNode [2023-11-26 10:44:20,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:20,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:20,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:44:20,945 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:44:20,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20" (1/1) ... [2023-11-26 10:44:20,964 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20" (1/1) ... [2023-11-26 10:44:20,993 INFO L138 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2023-11-26 10:44:20,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:20,994 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:44:20,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:44:20,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:44:21,010 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20" (1/1) ... [2023-11-26 10:44:21,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20" (1/1) ... [2023-11-26 10:44:21,027 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20" (1/1) ... [2023-11-26 10:44:21,051 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 4, 6]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 3, 3]. [2023-11-26 10:44:21,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20" (1/1) ... [2023-11-26 10:44:21,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20" (1/1) ... [2023-11-26 10:44:21,061 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20" (1/1) ... [2023-11-26 10:44:21,066 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20" (1/1) ... [2023-11-26 10:44:21,069 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20" (1/1) ... [2023-11-26 10:44:21,070 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20" (1/1) ... [2023-11-26 10:44:21,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:44:21,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:44:21,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:44:21,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:44:21,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20" (1/1) ... [2023-11-26 10:44:21,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:21,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:21,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:21,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:44:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 10:44:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 10:44:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 10:44:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:44:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:44:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:44:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:44:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 10:44:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 10:44:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 10:44:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:44:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:44:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:44:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:44:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:44:21,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:44:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:44:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:44:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:44:21,325 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:44:21,327 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:44:21,568 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:44:21,602 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:44:21,603 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 10:44:21,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:21 BoogieIcfgContainer [2023-11-26 10:44:21,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:44:21,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:44:21,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:44:21,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:44:21,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:44:20" (1/3) ... [2023-11-26 10:44:21,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618a434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:21, skipping insertion in model container [2023-11-26 10:44:21,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:20" (2/3) ... [2023-11-26 10:44:21,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618a434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:21, skipping insertion in model container [2023-11-26 10:44:21,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:21" (3/3) ... [2023-11-26 10:44:21,616 INFO L112 eAbstractionObserver]: Analyzing ICFG array_ptr_single_elem_init-1.i [2023-11-26 10:44:21,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:44:21,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:44:21,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:44:21,709 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@110993c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:44:21,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:44:21,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 10:44:21,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:21,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:21,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:21,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:21,731 INFO L85 PathProgramCache]: Analyzing trace with hash 320365573, now seen corresponding path program 1 times [2023-11-26 10:44:21,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:21,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661492593] [2023-11-26 10:44:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:21,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:22,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:22,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661492593] [2023-11-26 10:44:22,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661492593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:22,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:22,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:44:22,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750264016] [2023-11-26 10:44:22,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:22,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:44:22,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:22,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:44:22,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:44:22,091 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 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) [2023-11-26 10:44:22,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:22,163 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2023-11-26 10:44:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:44:22,167 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 [2023-11-26 10:44:22,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:22,177 INFO L225 Difference]: With dead ends: 28 [2023-11-26 10:44:22,178 INFO L226 Difference]: Without dead ends: 15 [2023-11-26 10:44:22,181 INFO L412 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 [2023-11-26 10:44:22,186 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:22,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-26 10:44:22,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-26 10:44:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2023-11-26 10:44:22,234 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 21 transitions. Word has length 8 [2023-11-26 10:44:22,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:22,235 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 21 transitions. [2023-11-26 10:44:22,236 INFO L496 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) [2023-11-26 10:44:22,236 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 21 transitions. [2023-11-26 10:44:22,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 10:44:22,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:22,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:22,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:44:22,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:22,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:22,242 INFO L85 PathProgramCache]: Analyzing trace with hash -392389972, now seen corresponding path program 1 times [2023-11-26 10:44:22,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:22,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137770927] [2023-11-26 10:44:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:22,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:22,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:22,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137770927] [2023-11-26 10:44:22,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137770927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:22,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:22,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:44:22,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601620567] [2023-11-26 10:44:22,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:22,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:22,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:22,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:22,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:22,480 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) 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) [2023-11-26 10:44:22,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:22,531 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2023-11-26 10:44:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:22,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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 [2023-11-26 10:44:22,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:22,536 INFO L225 Difference]: With dead ends: 37 [2023-11-26 10:44:22,537 INFO L226 Difference]: Without dead ends: 28 [2023-11-26 10:44:22,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:22,540 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:22,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:22,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-26 10:44:22,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 16. [2023-11-26 10:44:22,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 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) [2023-11-26 10:44:22,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2023-11-26 10:44:22,575 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 8 [2023-11-26 10:44:22,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:22,575 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2023-11-26 10:44:22,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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) [2023-11-26 10:44:22,576 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2023-11-26 10:44:22,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 10:44:22,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:22,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:22,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:44:22,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:22,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:22,581 INFO L85 PathProgramCache]: Analyzing trace with hash 797601271, now seen corresponding path program 1 times [2023-11-26 10:44:22,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:22,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786196880] [2023-11-26 10:44:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:22,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:22,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:22,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786196880] [2023-11-26 10:44:22,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786196880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:22,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:22,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:22,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461913559] [2023-11-26 10:44:22,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:22,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:22,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:22,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:22,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:22,795 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:22,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:22,852 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2023-11-26 10:44:22,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:22,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2023-11-26 10:44:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:22,854 INFO L225 Difference]: With dead ends: 35 [2023-11-26 10:44:22,854 INFO L226 Difference]: Without dead ends: 21 [2023-11-26 10:44:22,856 INFO L412 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 [2023-11-26 10:44:22,858 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:22,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 31 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-26 10:44:22,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2023-11-26 10:44:22,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:22,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2023-11-26 10:44:22,874 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 12 [2023-11-26 10:44:22,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:22,876 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2023-11-26 10:44:22,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:22,877 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2023-11-26 10:44:22,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 10:44:22,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:22,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:22,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:44:22,879 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:22,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:22,886 INFO L85 PathProgramCache]: Analyzing trace with hash 404574261, now seen corresponding path program 1 times [2023-11-26 10:44:22,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:22,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986517235] [2023-11-26 10:44:22,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:22,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:23,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:23,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986517235] [2023-11-26 10:44:23,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986517235] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:23,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357477920] [2023-11-26 10:44:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:23,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:23,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:23,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:23,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:44:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:23,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:44:23,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:44:23,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:23,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357477920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:23,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:44:23,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-26 10:44:23,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606970647] [2023-11-26 10:44:23,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:23,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:23,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:23,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:23,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:23,221 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:23,240 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2023-11-26 10:44:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:23,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2023-11-26 10:44:23,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:23,242 INFO L225 Difference]: With dead ends: 26 [2023-11-26 10:44:23,242 INFO L226 Difference]: Without dead ends: 18 [2023-11-26 10:44:23,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:23,245 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:23,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:23,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-26 10:44:23,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-26 10:44:23,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2023-11-26 10:44:23,251 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 12 [2023-11-26 10:44:23,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:23,251 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2023-11-26 10:44:23,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:23,252 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2023-11-26 10:44:23,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 10:44:23,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:23,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:23,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:23,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:23,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:23,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:23,462 INFO L85 PathProgramCache]: Analyzing trace with hash 404514679, now seen corresponding path program 1 times [2023-11-26 10:44:23,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:23,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751805125] [2023-11-26 10:44:23,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:23,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:23,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:23,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751805125] [2023-11-26 10:44:23,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751805125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:23,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841790196] [2023-11-26 10:44:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:23,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:23,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:23,556 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:23,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:44:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:23,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:44:23,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:23,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:23,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841790196] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:23,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:44:23,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-26 10:44:23,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264142547] [2023-11-26 10:44:23,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:23,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:44:23,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:23,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:44:23,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:23,781 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:23,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:23,859 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2023-11-26 10:44:23,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:44:23,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 12 [2023-11-26 10:44:23,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:23,861 INFO L225 Difference]: With dead ends: 74 [2023-11-26 10:44:23,862 INFO L226 Difference]: Without dead ends: 64 [2023-11-26 10:44:23,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:23,864 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 84 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:23,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 72 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:44:23,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-26 10:44:23,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 36. [2023-11-26 10:44:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.457142857142857) internal successors, (51), 35 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) [2023-11-26 10:44:23,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2023-11-26 10:44:23,874 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 12 [2023-11-26 10:44:23,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:23,874 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2023-11-26 10:44:23,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:23,875 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2023-11-26 10:44:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-26 10:44:23,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:23,881 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:23,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:24,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:24,082 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:24,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:24,083 INFO L85 PathProgramCache]: Analyzing trace with hash 664272146, now seen corresponding path program 2 times [2023-11-26 10:44:24,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:24,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738762136] [2023-11-26 10:44:24,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:24,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:24,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:24,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738762136] [2023-11-26 10:44:24,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738762136] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:24,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511106375] [2023-11-26 10:44:24,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:44:24,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:24,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:24,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:24,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:44:24,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:44:24,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:44:24,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:44:24,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:24,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:24,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511106375] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:24,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:44:24,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-26 10:44:24,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656169421] [2023-11-26 10:44:24,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:24,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 10:44:24,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 10:44:24,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:44:24,653 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:24,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:24,825 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2023-11-26 10:44:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:44:24,825 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 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 24 [2023-11-26 10:44:24,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:24,833 INFO L225 Difference]: With dead ends: 164 [2023-11-26 10:44:24,833 INFO L226 Difference]: Without dead ends: 154 [2023-11-26 10:44:24,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:44:24,835 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 279 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:24,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 142 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:44:24,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-26 10:44:24,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 72. [2023-11-26 10:44:24,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 71 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:24,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2023-11-26 10:44:24,859 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 24 [2023-11-26 10:44:24,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:24,860 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2023-11-26 10:44:24,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:24,860 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2023-11-26 10:44:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-26 10:44:24,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:24,862 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:24,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:25,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 10:44:25,071 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:25,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:25,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1220790584, now seen corresponding path program 3 times [2023-11-26 10:44:25,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:25,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72242349] [2023-11-26 10:44:25,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:25,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:25,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:25,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72242349] [2023-11-26 10:44:25,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72242349] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:25,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470669083] [2023-11-26 10:44:25,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 10:44:25,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:25,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:25,673 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:25,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:44:26,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-26 10:44:26,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:44:26,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:44:26,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:27,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:27,378 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:27,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470669083] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:27,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:44:27,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-26 10:44:27,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008977437] [2023-11-26 10:44:27,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:27,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-26 10:44:27,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:27,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-26 10:44:27,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-26 10:44:27,392 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand has 25 states, 25 states have (on average 3.8) internal successors, (95), 24 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:27,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:27,803 INFO L93 Difference]: Finished difference Result 344 states and 469 transitions. [2023-11-26 10:44:27,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-26 10:44:27,804 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 24 states have internal predecessors, (95), 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 48 [2023-11-26 10:44:27,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:27,807 INFO L225 Difference]: With dead ends: 344 [2023-11-26 10:44:27,807 INFO L226 Difference]: Without dead ends: 334 [2023-11-26 10:44:27,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-26 10:44:27,810 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 708 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:27,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 324 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:44:27,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-11-26 10:44:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 144. [2023-11-26 10:44:27,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4895104895104896) internal successors, (213), 143 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:27,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 213 transitions. [2023-11-26 10:44:27,827 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 213 transitions. Word has length 48 [2023-11-26 10:44:27,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:27,827 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 213 transitions. [2023-11-26 10:44:27,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 24 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:27,828 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 213 transitions. [2023-11-26 10:44:27,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-26 10:44:27,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:27,833 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:27,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:28,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:28,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:28,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:28,047 INFO L85 PathProgramCache]: Analyzing trace with hash -585243596, now seen corresponding path program 4 times [2023-11-26 10:44:28,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:28,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872094301] [2023-11-26 10:44:28,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:28,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:29,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:29,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872094301] [2023-11-26 10:44:29,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872094301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:29,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112943598] [2023-11-26 10:44:29,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 10:44:29,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:29,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:29,472 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:29,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:44:32,142 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 10:44:32,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:44:32,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-26 10:44:32,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:32,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:33,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112943598] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:33,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:44:33,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-11-26 10:44:33,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70891670] [2023-11-26 10:44:33,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:33,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-26 10:44:33,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:33,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-26 10:44:33,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-11-26 10:44:33,635 INFO L87 Difference]: Start difference. First operand 144 states and 213 transitions. Second operand has 49 states, 49 states have (on average 3.8979591836734695) internal successors, (191), 48 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:34,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:34,994 INFO L93 Difference]: Finished difference Result 704 states and 961 transitions. [2023-11-26 10:44:34,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-26 10:44:34,995 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.8979591836734695) internal successors, (191), 48 states have internal predecessors, (191), 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 96 [2023-11-26 10:44:34,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:35,001 INFO L225 Difference]: With dead ends: 704 [2023-11-26 10:44:35,001 INFO L226 Difference]: Without dead ends: 694 [2023-11-26 10:44:35,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-11-26 10:44:35,005 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 1865 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:35,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1865 Valid, 660 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:44:35,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2023-11-26 10:44:35,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 288. [2023-11-26 10:44:35,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.494773519163763) internal successors, (429), 287 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 429 transitions. [2023-11-26 10:44:35,027 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 429 transitions. Word has length 96 [2023-11-26 10:44:35,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:35,028 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 429 transitions. [2023-11-26 10:44:35,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.8979591836734695) internal successors, (191), 48 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 429 transitions. [2023-11-26 10:44:35,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-26 10:44:35,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:35,036 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:35,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:35,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:35,258 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:35,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:35,258 INFO L85 PathProgramCache]: Analyzing trace with hash -244439284, now seen corresponding path program 5 times [2023-11-26 10:44:35,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:35,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186585291] [2023-11-26 10:44:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:35,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:39,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:39,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186585291] [2023-11-26 10:44:39,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186585291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:39,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198826136] [2023-11-26 10:44:39,578 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-26 10:44:39,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:39,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:39,579 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:39,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66586f10-5074-43f3-9cae-83b8ee04f0df/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process