./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_dekker.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_dekker.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu --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 ee7ff83d9ca4f9baaadd009c98a7dd30697b6140296199117a6b05757b5b9f74 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:13,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:13,852 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:36:13,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:13,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:13,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:13,900 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:13,901 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:13,902 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:13,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:13,908 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:13,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:13,909 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:13,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:13,912 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:36:13,912 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:13,912 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:13,913 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:13,913 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:13,914 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:36:13,914 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:13,915 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:36:13,915 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:13,916 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:36:13,916 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:13,917 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:13,918 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:13,918 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:13,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:13,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:13,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:13,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:36:13,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:13,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:13,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:13,922 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:36:13,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:13,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:13,923 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:13,923 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_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee7ff83d9ca4f9baaadd009c98a7dd30697b6140296199117a6b05757b5b9f74 [2023-11-19 07:36:14,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:14,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:14,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:14,264 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:14,265 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:14,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/seq-pthread/cs_dekker.i [2023-11-19 07:36:17,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:17,535 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:17,535 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/sv-benchmarks/c/seq-pthread/cs_dekker.i [2023-11-19 07:36:17,561 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/data/f4c5f128f/c12c4b22dab54c5f993b7e015304dddc/FLAGe8d8a0014 [2023-11-19 07:36:17,577 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/data/f4c5f128f/c12c4b22dab54c5f993b7e015304dddc [2023-11-19 07:36:17,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:17,584 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:17,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:17,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:17,591 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:17,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:17" (1/1) ... [2023-11-19 07:36:17,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3268b05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:17, skipping insertion in model container [2023-11-19 07:36:17,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:17" (1/1) ... [2023-11-19 07:36:17,665 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:18,009 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_92138e10-9369-41eb-9f86-01a238ef49a1/sv-benchmarks/c/seq-pthread/cs_dekker.i[23603,23616] [2023-11-19 07:36:18,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:18,155 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:18,184 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_92138e10-9369-41eb-9f86-01a238ef49a1/sv-benchmarks/c/seq-pthread/cs_dekker.i[23603,23616] [2023-11-19 07:36:18,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:18,296 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:18,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:18 WrapperNode [2023-11-19 07:36:18,296 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:18,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:18,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:18,298 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:18,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:18" (1/1) ... [2023-11-19 07:36:18,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:18" (1/1) ... [2023-11-19 07:36:18,377 INFO L138 Inliner]: procedures = 145, calls = 300, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 455 [2023-11-19 07:36:18,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:18,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:18,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:18,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:18,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:18" (1/1) ... [2023-11-19 07:36:18,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:18" (1/1) ... [2023-11-19 07:36:18,406 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:18" (1/1) ... [2023-11-19 07:36:18,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:18" (1/1) ... [2023-11-19 07:36:18,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:18" (1/1) ... [2023-11-19 07:36:18,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:18" (1/1) ... [2023-11-19 07:36:18,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:18" (1/1) ... [2023-11-19 07:36:18,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:18" (1/1) ... [2023-11-19 07:36:18,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:18,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:18,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:18,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:18,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:18" (1/1) ... [2023-11-19 07:36:18,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:18,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:18,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:18,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:36:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:36:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:36:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:36:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:36:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:36:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2023-11-19 07:36:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2023-11-19 07:36:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:36:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2023-11-19 07:36:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2023-11-19 07:36:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-11-19 07:36:18,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-11-19 07:36:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:36:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:36:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2023-11-19 07:36:18,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2023-11-19 07:36:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:36:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:18,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:18,774 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:18,776 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:21,718 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:21,728 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:21,728 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:36:21,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:21 BoogieIcfgContainer [2023-11-19 07:36:21,733 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:21,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:21,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:21,740 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:21,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:17" (1/3) ... [2023-11-19 07:36:21,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5ed092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:21, skipping insertion in model container [2023-11-19 07:36:21,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:18" (2/3) ... [2023-11-19 07:36:21,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5ed092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:21, skipping insertion in model container [2023-11-19 07:36:21,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:21" (3/3) ... [2023-11-19 07:36:21,746 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_dekker.i [2023-11-19 07:36:21,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:21,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:36:21,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:21,838 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;@d3c6564, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:21,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:36:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 78 states have internal predecessors, (103), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 07:36:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 07:36:21,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:21,880 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:21,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:21,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:21,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1894795283, now seen corresponding path program 1 times [2023-11-19 07:36:21,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:21,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674219070] [2023-11-19 07:36:21,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:21,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:36:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:36:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 07:36:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-19 07:36:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:36:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-19 07:36:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-19 07:36:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-19 07:36:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-19 07:36:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-19 07:36:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-19 07:36:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-19 07:36:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-19 07:36:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-19 07:36:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-19 07:36:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:36:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-19 07:36:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-19 07:36:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-19 07:36:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:36:23,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:23,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674219070] [2023-11-19 07:36:23,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674219070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:23,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:23,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:23,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124623892] [2023-11-19 07:36:23,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:23,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:23,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:23,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:23,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:23,111 INFO L87 Difference]: Start difference. First operand has 119 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 78 states have internal predecessors, (103), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:36:23,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:23,237 INFO L93 Difference]: Finished difference Result 240 states and 385 transitions. [2023-11-19 07:36:23,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:23,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 132 [2023-11-19 07:36:23,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:23,253 INFO L225 Difference]: With dead ends: 240 [2023-11-19 07:36:23,253 INFO L226 Difference]: Without dead ends: 119 [2023-11-19 07:36:23,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:23,268 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 4 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:23,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 329 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-19 07:36:23,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2023-11-19 07:36:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 07:36:23,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 166 transitions. [2023-11-19 07:36:23,353 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 166 transitions. Word has length 132 [2023-11-19 07:36:23,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:23,354 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 166 transitions. [2023-11-19 07:36:23,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:36:23,354 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 166 transitions. [2023-11-19 07:36:23,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-19 07:36:23,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:23,361 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:23,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:23,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:23,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:23,362 INFO L85 PathProgramCache]: Analyzing trace with hash 670602041, now seen corresponding path program 1 times [2023-11-19 07:36:23,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:23,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145589500] [2023-11-19 07:36:23,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:23,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 07:36:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 07:36:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:36:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-19 07:36:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 07:36:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:36:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-19 07:36:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-19 07:36:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-19 07:36:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-19 07:36:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-19 07:36:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-19 07:36:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:36:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-19 07:36:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-19 07:36:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-19 07:36:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-19 07:36:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-19 07:36:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-19 07:36:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-19 07:36:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:36:24,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:24,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145589500] [2023-11-19 07:36:24,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145589500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:24,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:24,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:24,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391769162] [2023-11-19 07:36:24,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:24,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:24,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:24,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:24,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:24,101 INFO L87 Difference]: Start difference. First operand 116 states and 166 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:36:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:24,139 INFO L93 Difference]: Finished difference Result 231 states and 332 transitions. [2023-11-19 07:36:24,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:24,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 135 [2023-11-19 07:36:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:24,143 INFO L225 Difference]: With dead ends: 231 [2023-11-19 07:36:24,143 INFO L226 Difference]: Without dead ends: 118 [2023-11-19 07:36:24,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:24,145 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:24,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 323 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-19 07:36:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2023-11-19 07:36:24,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 76 states have internal predecessors, (97), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 07:36:24,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 167 transitions. [2023-11-19 07:36:24,161 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 167 transitions. Word has length 135 [2023-11-19 07:36:24,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:24,162 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 167 transitions. [2023-11-19 07:36:24,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:36:24,162 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 167 transitions. [2023-11-19 07:36:24,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-19 07:36:24,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:24,166 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:24,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:36:24,166 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:24,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1901362565, now seen corresponding path program 1 times [2023-11-19 07:36:24,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:24,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835656069] [2023-11-19 07:36:24,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-19 07:36:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:36:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:36:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:36:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-19 07:36:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-19 07:36:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 07:36:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-19 07:36:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 07:36:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-19 07:36:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-19 07:36:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-19 07:36:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-19 07:36:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-19 07:36:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-19 07:36:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-19 07:36:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-19 07:36:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-19 07:36:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-19 07:36:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-19 07:36:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:36:24,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:24,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835656069] [2023-11-19 07:36:24,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835656069] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:24,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834503205] [2023-11-19 07:36:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:24,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:24,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:24,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:24,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:36:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:25,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:25,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:36:25,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:36:25,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834503205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:25,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:25,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-19 07:36:25,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537463612] [2023-11-19 07:36:25,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:25,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:25,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:25,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:25,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:25,501 INFO L87 Difference]: Start difference. First operand 117 states and 167 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-11-19 07:36:25,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:25,567 INFO L93 Difference]: Finished difference Result 235 states and 337 transitions. [2023-11-19 07:36:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:25,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 137 [2023-11-19 07:36:25,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:25,570 INFO L225 Difference]: With dead ends: 235 [2023-11-19 07:36:25,570 INFO L226 Difference]: Without dead ends: 121 [2023-11-19 07:36:25,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:25,573 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:25,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 643 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-19 07:36:25,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-11-19 07:36:25,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 80 states have (on average 1.2625) internal successors, (101), 80 states have internal predecessors, (101), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 07:36:25,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 171 transitions. [2023-11-19 07:36:25,588 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 171 transitions. Word has length 137 [2023-11-19 07:36:25,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:25,589 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 171 transitions. [2023-11-19 07:36:25,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-11-19 07:36:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 171 transitions. [2023-11-19 07:36:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-19 07:36:25,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:25,592 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:25,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:25,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:25,812 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:25,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:25,813 INFO L85 PathProgramCache]: Analyzing trace with hash -39508097, now seen corresponding path program 2 times [2023-11-19 07:36:25,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:25,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384216667] [2023-11-19 07:36:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:25,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 07:36:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:36:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-19 07:36:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 07:36:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:36:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-19 07:36:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-19 07:36:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-19 07:36:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-19 07:36:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-19 07:36:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-19 07:36:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:36:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-19 07:36:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-19 07:36:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-19 07:36:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-19 07:36:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-19 07:36:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-19 07:36:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-19 07:36:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-19 07:36:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2023-11-19 07:36:26,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:26,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384216667] [2023-11-19 07:36:26,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384216667] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:26,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366337766] [2023-11-19 07:36:26,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:36:26,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:26,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:26,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:26,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:36:26,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:36:26,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:36:26,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:36:26,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-11-19 07:36:27,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:27,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366337766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:27,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:27,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-19 07:36:27,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129887446] [2023-11-19 07:36:27,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:27,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:27,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:27,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:27,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:27,287 INFO L87 Difference]: Start difference. First operand 121 states and 171 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:36:27,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:27,331 INFO L93 Difference]: Finished difference Result 227 states and 328 transitions. [2023-11-19 07:36:27,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:27,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2023-11-19 07:36:27,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:27,336 INFO L225 Difference]: With dead ends: 227 [2023-11-19 07:36:27,337 INFO L226 Difference]: Without dead ends: 181 [2023-11-19 07:36:27,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:27,339 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 84 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:27,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 508 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:27,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-19 07:36:27,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-11-19 07:36:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 121 states have internal predecessors, (158), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (53), 49 states have call predecessors, (53), 49 states have call successors, (53) [2023-11-19 07:36:27,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 260 transitions. [2023-11-19 07:36:27,372 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 260 transitions. Word has length 141 [2023-11-19 07:36:27,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:27,373 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 260 transitions. [2023-11-19 07:36:27,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:36:27,373 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 260 transitions. [2023-11-19 07:36:27,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-19 07:36:27,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:27,385 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:27,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:27,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:27,606 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:27,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:27,607 INFO L85 PathProgramCache]: Analyzing trace with hash 717469878, now seen corresponding path program 1 times [2023-11-19 07:36:27,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:27,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712243047] [2023-11-19 07:36:27,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:27,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:36:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:36:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:36:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:36:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-19 07:36:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:36:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-19 07:36:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-19 07:36:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-19 07:36:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-19 07:36:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-19 07:36:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-19 07:36:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-19 07:36:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-19 07:36:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-19 07:36:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-19 07:36:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-19 07:36:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-19 07:36:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-19 07:36:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-11-19 07:36:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-19 07:36:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-19 07:36:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-19 07:36:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-11-19 07:36:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-11-19 07:36:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-11-19 07:36:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-19 07:36:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-19 07:36:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2023-11-19 07:36:28,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:28,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712243047] [2023-11-19 07:36:28,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712243047] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:28,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937127373] [2023-11-19 07:36:28,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:28,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:28,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:28,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:28,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:36:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:29,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:29,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:29,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2023-11-19 07:36:29,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2023-11-19 07:36:29,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937127373] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:29,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:29,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2023-11-19 07:36:29,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099885385] [2023-11-19 07:36:29,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:29,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:36:29,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:29,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:36:29,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:36:29,530 INFO L87 Difference]: Start difference. First operand 181 states and 260 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 6 states have internal predecessors, (110), 2 states have call successors, (69), 6 states have call predecessors, (69), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2023-11-19 07:36:31,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:36:33,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:36:34,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:34,500 INFO L93 Difference]: Finished difference Result 378 states and 542 transitions. [2023-11-19 07:36:34,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:36:34,501 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 6 states have internal predecessors, (110), 2 states have call successors, (69), 6 states have call predecessors, (69), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 225 [2023-11-19 07:36:34,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:34,504 INFO L225 Difference]: With dead ends: 378 [2023-11-19 07:36:34,504 INFO L226 Difference]: Without dead ends: 209 [2023-11-19 07:36:34,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 512 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:36:34,506 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 69 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 108 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:34,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 355 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 317 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2023-11-19 07:36:34,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-19 07:36:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 204. [2023-11-19 07:36:34,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 142 states have (on average 1.2746478873239437) internal successors, (181), 144 states have internal predecessors, (181), 49 states have call successors, (49), 10 states have call predecessors, (49), 12 states have return successors, (57), 49 states have call predecessors, (57), 49 states have call successors, (57) [2023-11-19 07:36:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 287 transitions. [2023-11-19 07:36:34,535 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 287 transitions. Word has length 225 [2023-11-19 07:36:34,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:34,535 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 287 transitions. [2023-11-19 07:36:34,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 6 states have internal predecessors, (110), 2 states have call successors, (69), 6 states have call predecessors, (69), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2023-11-19 07:36:34,536 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 287 transitions. [2023-11-19 07:36:34,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-11-19 07:36:34,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:34,541 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:34,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:34,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:34,763 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:34,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:34,763 INFO L85 PathProgramCache]: Analyzing trace with hash -405683658, now seen corresponding path program 2 times [2023-11-19 07:36:34,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:34,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024299884] [2023-11-19 07:36:34,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:34,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:48,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 07:36:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:50,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:50,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:36:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:50,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:36:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:50,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:36:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:50,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-19 07:36:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:36:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-19 07:36:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-19 07:36:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-19 07:36:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-19 07:36:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-19 07:36:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-19 07:36:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-19 07:36:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-19 07:36:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-19 07:36:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-19 07:36:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-11-19 07:36:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-19 07:36:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-19 07:36:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-19 07:36:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-11-19 07:36:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-11-19 07:36:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-11-19 07:36:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-19 07:36:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-19 07:36:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-11-19 07:36:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-11-19 07:36:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-11-19 07:36:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1362 trivial. 0 not checked. [2023-11-19 07:36:51,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:51,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024299884] [2023-11-19 07:36:51,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024299884] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:51,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884147063] [2023-11-19 07:36:51,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:36:51,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:51,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:51,692 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:51,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:36:52,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:36:52,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:36:52,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:36:53,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2023-11-19 07:36:53,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:53,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884147063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:53,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:53,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [21] total 22 [2023-11-19 07:36:53,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101791415] [2023-11-19 07:36:53,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:53,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:53,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:53,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:53,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2023-11-19 07:36:53,076 INFO L87 Difference]: Start difference. First operand 204 states and 287 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-19 07:36:53,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:53,103 INFO L93 Difference]: Finished difference Result 368 states and 522 transitions. [2023-11-19 07:36:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:53,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 243 [2023-11-19 07:36:53,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:53,106 INFO L225 Difference]: With dead ends: 368 [2023-11-19 07:36:53,106 INFO L226 Difference]: Without dead ends: 204 [2023-11-19 07:36:53,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2023-11-19 07:36:53,109 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 324 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 [2023-11-19 07:36:53,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 324 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-19 07:36:53,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2023-11-19 07:36:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 142 states have (on average 1.267605633802817) internal successors, (180), 144 states have internal predecessors, (180), 49 states have call successors, (49), 10 states have call predecessors, (49), 12 states have return successors, (57), 49 states have call predecessors, (57), 49 states have call successors, (57) [2023-11-19 07:36:53,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 286 transitions. [2023-11-19 07:36:53,160 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 286 transitions. Word has length 243 [2023-11-19 07:36:53,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:53,161 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 286 transitions. [2023-11-19 07:36:53,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-19 07:36:53,161 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 286 transitions. [2023-11-19 07:36:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-11-19 07:36:53,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:53,166 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 9, 9, 6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:53,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:53,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92138e10-9369-41eb-9f86-01a238ef49a1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:53,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:53,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1759343662, now seen corresponding path program 1 times [2023-11-19 07:36:53,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:53,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710904075] [2023-11-19 07:36:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat