./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI --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 d4710f8f3a918a0191222414f5c33a367ff98c09c2e8598fa3213223c4c35dba --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:41:52,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:41:52,523 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:41:52,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:41:52,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:41:52,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:41:52,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:41:52,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:41:52,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:41:52,593 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:41:52,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:41:52,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:41:52,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:41:52,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:41:52,596 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:41:52,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:41:52,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:41:52,598 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:41:52,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:41:52,599 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:41:52,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:41:52,600 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:41:52,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:41:52,601 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:41:52,602 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:41:52,602 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:41:52,603 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:41:52,603 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:41:52,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:41:52,604 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:41:52,604 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:41:52,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:41:52,605 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:41:52,605 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:41:52,606 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:41:52,606 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:41:52,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:41:52,606 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:41:52,607 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:41:52,607 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:41:52,607 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:41:52,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:41:52,608 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_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4710f8f3a918a0191222414f5c33a367ff98c09c2e8598fa3213223c4c35dba [2023-11-24 21:41:52,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:41:52,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:41:52,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:41:52,901 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:41:52,901 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:41:52,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/systemc/token_ring.04.cil-1.c [2023-11-24 21:41:56,038 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:41:56,266 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:41:56,267 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/sv-benchmarks/c/systemc/token_ring.04.cil-1.c [2023-11-24 21:41:56,281 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/data/b6b35832a/3f9450438d2243c18b539263b4cf8955/FLAG028999907 [2023-11-24 21:41:56,298 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/data/b6b35832a/3f9450438d2243c18b539263b4cf8955 [2023-11-24 21:41:56,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:41:56,303 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:41:56,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:41:56,306 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:41:56,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:41:56,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:41:56" (1/1) ... [2023-11-24 21:41:56,318 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450f1270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56, skipping insertion in model container [2023-11-24 21:41:56,318 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:41:56" (1/1) ... [2023-11-24 21:41:56,370 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:41:56,546 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_98f3da55-61d8-4991-86ad-ce0f9c4f879c/sv-benchmarks/c/systemc/token_ring.04.cil-1.c[671,684] [2023-11-24 21:41:56,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:41:56,657 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:41:56,671 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_98f3da55-61d8-4991-86ad-ce0f9c4f879c/sv-benchmarks/c/systemc/token_ring.04.cil-1.c[671,684] [2023-11-24 21:41:56,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:41:56,742 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:41:56,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56 WrapperNode [2023-11-24 21:41:56,743 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:41:56,744 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:41:56,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:41:56,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:41:56,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56" (1/1) ... [2023-11-24 21:41:56,766 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56" (1/1) ... [2023-11-24 21:41:56,804 INFO L138 Inliner]: procedures = 36, calls = 43, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 399 [2023-11-24 21:41:56,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:41:56,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:41:56,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:41:56,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:41:56,820 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56" (1/1) ... [2023-11-24 21:41:56,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56" (1/1) ... [2023-11-24 21:41:56,825 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56" (1/1) ... [2023-11-24 21:41:56,844 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-24 21:41:56,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56" (1/1) ... [2023-11-24 21:41:56,845 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56" (1/1) ... [2023-11-24 21:41:56,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56" (1/1) ... [2023-11-24 21:41:56,864 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56" (1/1) ... [2023-11-24 21:41:56,868 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56" (1/1) ... [2023-11-24 21:41:56,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56" (1/1) ... [2023-11-24 21:41:56,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:41:56,877 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:41:56,877 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:41:56,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:41:56,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56" (1/1) ... [2023-11-24 21:41:56,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:41:56,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:41:56,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:41:56,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:41:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:41:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-24 21:41:56,983 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-24 21:41:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-24 21:41:56,984 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-24 21:41:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-24 21:41:56,984 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-24 21:41:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-24 21:41:56,987 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-24 21:41:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-24 21:41:56,988 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-24 21:41:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:41:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-24 21:41:56,989 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-24 21:41:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:41:56,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:41:57,127 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:41:57,130 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:41:57,690 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:41:57,773 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:41:57,773 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-24 21:41:57,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:41:57 BoogieIcfgContainer [2023-11-24 21:41:57,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:41:57,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:41:57,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:41:57,816 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:41:57,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:41:56" (1/3) ... [2023-11-24 21:41:57,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4aab9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:41:57, skipping insertion in model container [2023-11-24 21:41:57,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:56" (2/3) ... [2023-11-24 21:41:57,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4aab9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:41:57, skipping insertion in model container [2023-11-24 21:41:57,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:41:57" (3/3) ... [2023-11-24 21:41:57,820 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.04.cil-1.c [2023-11-24 21:41:57,875 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:41:57,875 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:41:57,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:41:57,954 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;@4a2a1cb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:41:57,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:41:57,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 138 states have (on average 1.6884057971014492) internal successors, (233), 140 states have internal predecessors, (233), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-24 21:41:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-24 21:41:57,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:41:57,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:57,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:41:57,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:57,983 INFO L85 PathProgramCache]: Analyzing trace with hash -350002983, now seen corresponding path program 1 times [2023-11-24 21:41:57,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:57,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208972999] [2023-11-24 21:41:57,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:57,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:58,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:41:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:41:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:58,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-24 21:41:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:58,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-24 21:41:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:58,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-24 21:41:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:58,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:58,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208972999] [2023-11-24 21:41:58,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208972999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:58,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:58,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:41:58,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729155812] [2023-11-24 21:41:58,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:58,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:41:58,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:58,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:41:58,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:41:58,560 INFO L87 Difference]: Start difference. First operand has 164 states, 138 states have (on average 1.6884057971014492) internal successors, (233), 140 states have internal predecessors, (233), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:41:59,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:41:59,672 INFO L93 Difference]: Finished difference Result 370 states and 613 transitions. [2023-11-24 21:41:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:41:59,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-11-24 21:41:59,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:41:59,688 INFO L225 Difference]: With dead ends: 370 [2023-11-24 21:41:59,688 INFO L226 Difference]: Without dead ends: 212 [2023-11-24 21:41:59,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:41:59,697 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 407 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:41:59,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 297 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:41:59,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-24 21:41:59,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 162. [2023-11-24 21:41:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 137 states have (on average 1.5693430656934306) internal successors, (215), 138 states have internal predecessors, (215), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-24 21:41:59,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 251 transitions. [2023-11-24 21:41:59,769 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 251 transitions. Word has length 80 [2023-11-24 21:41:59,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:41:59,769 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 251 transitions. [2023-11-24 21:41:59,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:41:59,770 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 251 transitions. [2023-11-24 21:41:59,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-24 21:41:59,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:41:59,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:59,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:41:59,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:41:59,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash 617347671, now seen corresponding path program 1 times [2023-11-24 21:41:59,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:59,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081018524] [2023-11-24 21:41:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:59,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:59,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:41:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:59,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:41:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:00,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-24 21:42:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:00,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-24 21:42:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:00,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-24 21:42:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:00,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081018524] [2023-11-24 21:42:00,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081018524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:00,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:00,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:42:00,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536065000] [2023-11-24 21:42:00,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:00,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:42:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:00,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:42:00,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:42:00,096 INFO L87 Difference]: Start difference. First operand 162 states and 251 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:01,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:01,564 INFO L93 Difference]: Finished difference Result 569 states and 905 transitions. [2023-11-24 21:42:01,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:42:01,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-11-24 21:42:01,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:01,578 INFO L225 Difference]: With dead ends: 569 [2023-11-24 21:42:01,578 INFO L226 Difference]: Without dead ends: 417 [2023-11-24 21:42:01,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:42:01,585 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 605 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:01,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 491 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 21:42:01,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-11-24 21:42:01,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 318. [2023-11-24 21:42:01,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 273 states have (on average 1.5787545787545787) internal successors, (431), 275 states have internal predecessors, (431), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-11-24 21:42:01,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 496 transitions. [2023-11-24 21:42:01,685 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 496 transitions. Word has length 80 [2023-11-24 21:42:01,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:01,685 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 496 transitions. [2023-11-24 21:42:01,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:01,686 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 496 transitions. [2023-11-24 21:42:01,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-24 21:42:01,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:01,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:01,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:42:01,690 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:01,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:01,690 INFO L85 PathProgramCache]: Analyzing trace with hash -800451433, now seen corresponding path program 1 times [2023-11-24 21:42:01,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:01,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467975497] [2023-11-24 21:42:01,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:01,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:01,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:42:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:01,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:01,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-24 21:42:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:01,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-24 21:42:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:01,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-24 21:42:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:01,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:01,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467975497] [2023-11-24 21:42:01,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467975497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:01,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:01,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:42:01,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428935961] [2023-11-24 21:42:01,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:01,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:01,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:01,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:01,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:01,974 INFO L87 Difference]: Start difference. First operand 318 states and 496 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:04,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:04,106 INFO L93 Difference]: Finished difference Result 934 states and 1479 transitions. [2023-11-24 21:42:04,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:42:04,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-11-24 21:42:04,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:04,113 INFO L225 Difference]: With dead ends: 934 [2023-11-24 21:42:04,113 INFO L226 Difference]: Without dead ends: 626 [2023-11-24 21:42:04,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:42:04,116 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 610 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:04,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 916 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-24 21:42:04,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-11-24 21:42:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 463. [2023-11-24 21:42:04,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 398 states have (on average 1.57035175879397) internal successors, (625), 401 states have internal predecessors, (625), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-11-24 21:42:04,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 718 transitions. [2023-11-24 21:42:04,164 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 718 transitions. Word has length 80 [2023-11-24 21:42:04,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:04,165 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 718 transitions. [2023-11-24 21:42:04,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 718 transitions. [2023-11-24 21:42:04,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-24 21:42:04,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:04,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:04,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:42:04,169 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:04,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:04,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2016605159, now seen corresponding path program 1 times [2023-11-24 21:42:04,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:04,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552133123] [2023-11-24 21:42:04,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:04,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:04,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:42:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:04,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:04,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-24 21:42:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:04,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-24 21:42:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:04,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-24 21:42:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:04,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:04,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552133123] [2023-11-24 21:42:04,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552133123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:04,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:04,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:42:04,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518699036] [2023-11-24 21:42:04,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:04,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:04,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:04,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:04,399 INFO L87 Difference]: Start difference. First operand 463 states and 718 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:06,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:06,216 INFO L93 Difference]: Finished difference Result 1468 states and 2317 transitions. [2023-11-24 21:42:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:42:06,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-11-24 21:42:06,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:06,225 INFO L225 Difference]: With dead ends: 1468 [2023-11-24 21:42:06,225 INFO L226 Difference]: Without dead ends: 1015 [2023-11-24 21:42:06,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:42:06,228 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 656 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:06,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 612 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-24 21:42:06,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2023-11-24 21:42:06,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 754. [2023-11-24 21:42:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 649 states have (on average 1.5624036979969183) internal successors, (1014), 654 states have internal predecessors, (1014), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-11-24 21:42:06,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1167 transitions. [2023-11-24 21:42:06,290 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1167 transitions. Word has length 80 [2023-11-24 21:42:06,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:06,290 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1167 transitions. [2023-11-24 21:42:06,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:06,291 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1167 transitions. [2023-11-24 21:42:06,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-24 21:42:06,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:06,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:06,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:42:06,294 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:06,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:06,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1546394711, now seen corresponding path program 1 times [2023-11-24 21:42:06,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:06,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047502328] [2023-11-24 21:42:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:06,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:06,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:42:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:06,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:06,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-24 21:42:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:06,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-24 21:42:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:06,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-24 21:42:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:06,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:06,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047502328] [2023-11-24 21:42:06,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047502328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:06,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:06,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:42:06,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329405750] [2023-11-24 21:42:06,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:06,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:06,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:06,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:06,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:06,464 INFO L87 Difference]: Start difference. First operand 754 states and 1167 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:07,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:07,427 INFO L93 Difference]: Finished difference Result 1749 states and 2759 transitions. [2023-11-24 21:42:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:42:07,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-11-24 21:42:07,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:07,435 INFO L225 Difference]: With dead ends: 1749 [2023-11-24 21:42:07,435 INFO L226 Difference]: Without dead ends: 1005 [2023-11-24 21:42:07,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:42:07,439 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 454 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:07,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 460 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 21:42:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2023-11-24 21:42:07,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 754. [2023-11-24 21:42:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 649 states have (on average 1.5546995377503852) internal successors, (1009), 654 states have internal predecessors, (1009), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-11-24 21:42:07,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1162 transitions. [2023-11-24 21:42:07,540 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1162 transitions. Word has length 80 [2023-11-24 21:42:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:07,541 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1162 transitions. [2023-11-24 21:42:07,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:07,541 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1162 transitions. [2023-11-24 21:42:07,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-24 21:42:07,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:07,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:07,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:42:07,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:07,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash -139785127, now seen corresponding path program 1 times [2023-11-24 21:42:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:07,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718857841] [2023-11-24 21:42:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:07,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:07,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:42:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:07,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:07,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-24 21:42:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-24 21:42:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:07,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-24 21:42:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:07,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:07,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718857841] [2023-11-24 21:42:07,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718857841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:07,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:07,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:42:07,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144274564] [2023-11-24 21:42:07,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:07,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:07,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:07,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:07,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:07,750 INFO L87 Difference]: Start difference. First operand 754 states and 1162 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:08,637 INFO L93 Difference]: Finished difference Result 1743 states and 2733 transitions. [2023-11-24 21:42:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:42:08,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-11-24 21:42:08,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:08,646 INFO L225 Difference]: With dead ends: 1743 [2023-11-24 21:42:08,646 INFO L226 Difference]: Without dead ends: 999 [2023-11-24 21:42:08,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:42:08,655 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 516 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:08,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 385 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 21:42:08,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2023-11-24 21:42:08,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 754. [2023-11-24 21:42:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 649 states have (on average 1.546995377503852) internal successors, (1004), 654 states have internal predecessors, (1004), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-11-24 21:42:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1157 transitions. [2023-11-24 21:42:08,735 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1157 transitions. Word has length 80 [2023-11-24 21:42:08,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:08,736 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1157 transitions. [2023-11-24 21:42:08,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:08,737 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1157 transitions. [2023-11-24 21:42:08,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-24 21:42:08,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:08,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:08,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:42:08,739 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:08,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:08,740 INFO L85 PathProgramCache]: Analyzing trace with hash -194178025, now seen corresponding path program 1 times [2023-11-24 21:42:08,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:08,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109831202] [2023-11-24 21:42:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:08,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:08,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:42:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:08,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:08,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-24 21:42:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:08,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-24 21:42:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:08,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-24 21:42:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:08,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:08,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109831202] [2023-11-24 21:42:08,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109831202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:08,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:08,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:42:08,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87713972] [2023-11-24 21:42:08,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:08,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:08,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:08,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:08,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:08,951 INFO L87 Difference]: Start difference. First operand 754 states and 1157 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:10,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:10,985 INFO L93 Difference]: Finished difference Result 2704 states and 4202 transitions. [2023-11-24 21:42:10,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 21:42:10,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-11-24 21:42:10,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:11,001 INFO L225 Difference]: With dead ends: 2704 [2023-11-24 21:42:11,001 INFO L226 Difference]: Without dead ends: 1960 [2023-11-24 21:42:11,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:42:11,008 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 740 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:11,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 907 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 21:42:11,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2023-11-24 21:42:11,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1337. [2023-11-24 21:42:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1156 states have (on average 1.5397923875432526) internal successors, (1780), 1165 states have internal predecessors, (1780), 118 states have call successors, (118), 54 states have call predecessors, (118), 62 states have return successors, (153), 125 states have call predecessors, (153), 118 states have call successors, (153) [2023-11-24 21:42:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2051 transitions. [2023-11-24 21:42:11,135 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2051 transitions. Word has length 80 [2023-11-24 21:42:11,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:11,136 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 2051 transitions. [2023-11-24 21:42:11,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2051 transitions. [2023-11-24 21:42:11,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-24 21:42:11,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:11,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:11,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:42:11,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:11,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:11,140 INFO L85 PathProgramCache]: Analyzing trace with hash -611574631, now seen corresponding path program 1 times [2023-11-24 21:42:11,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:11,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987916626] [2023-11-24 21:42:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:11,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:11,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:42:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:11,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:11,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-24 21:42:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:11,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-24 21:42:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:11,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-24 21:42:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:11,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:11,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:11,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987916626] [2023-11-24 21:42:11,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987916626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:11,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:11,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:42:11,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827286969] [2023-11-24 21:42:11,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:11,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:11,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:11,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:11,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:11,369 INFO L87 Difference]: Start difference. First operand 1337 states and 2051 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:13,589 INFO L93 Difference]: Finished difference Result 4867 states and 7558 transitions. [2023-11-24 21:42:13,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 21:42:13,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-11-24 21:42:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:13,618 INFO L225 Difference]: With dead ends: 4867 [2023-11-24 21:42:13,619 INFO L226 Difference]: Without dead ends: 3540 [2023-11-24 21:42:13,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:42:13,626 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 616 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:13,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 903 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1695 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-24 21:42:13,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2023-11-24 21:42:13,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 2457. [2023-11-24 21:42:13,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 2128 states have (on average 1.5338345864661653) internal successors, (3264), 2145 states have internal predecessors, (3264), 210 states have call successors, (210), 102 states have call predecessors, (210), 118 states have return successors, (307), 225 states have call predecessors, (307), 210 states have call successors, (307) [2023-11-24 21:42:13,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 3781 transitions. [2023-11-24 21:42:13,878 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 3781 transitions. Word has length 80 [2023-11-24 21:42:13,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:13,880 INFO L495 AbstractCegarLoop]: Abstraction has 2457 states and 3781 transitions. [2023-11-24 21:42:13,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:13,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 3781 transitions. [2023-11-24 21:42:13,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-24 21:42:13,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:13,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:13,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:42:13,885 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:13,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:13,886 INFO L85 PathProgramCache]: Analyzing trace with hash 67697623, now seen corresponding path program 1 times [2023-11-24 21:42:13,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:13,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34040254] [2023-11-24 21:42:13,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:13,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:13,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:42:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:13,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:14,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-24 21:42:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-24 21:42:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:14,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-24 21:42:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:14,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:14,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34040254] [2023-11-24 21:42:14,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34040254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:14,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:14,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:42:14,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663421920] [2023-11-24 21:42:14,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:14,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:14,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:14,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:14,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:14,073 INFO L87 Difference]: Start difference. First operand 2457 states and 3781 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:16,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:16,074 INFO L93 Difference]: Finished difference Result 8749 states and 13616 transitions. [2023-11-24 21:42:16,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 21:42:16,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-11-24 21:42:16,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:16,125 INFO L225 Difference]: With dead ends: 8749 [2023-11-24 21:42:16,125 INFO L226 Difference]: Without dead ends: 6302 [2023-11-24 21:42:16,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:42:16,139 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 633 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:16,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 907 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-24 21:42:16,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6302 states. [2023-11-24 21:42:16,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6302 to 4752. [2023-11-24 21:42:16,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 4135 states have (on average 1.5337363966142685) internal successors, (6342), 4168 states have internal predecessors, (6342), 386 states have call successors, (386), 198 states have call predecessors, (386), 230 states have return successors, (661), 417 states have call predecessors, (661), 386 states have call successors, (661) [2023-11-24 21:42:16,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 7389 transitions. [2023-11-24 21:42:16,623 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 7389 transitions. Word has length 80 [2023-11-24 21:42:16,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:16,624 INFO L495 AbstractCegarLoop]: Abstraction has 4752 states and 7389 transitions. [2023-11-24 21:42:16,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:16,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 7389 transitions. [2023-11-24 21:42:16,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-24 21:42:16,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:16,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:16,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:42:16,631 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:16,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:16,632 INFO L85 PathProgramCache]: Analyzing trace with hash 269521557, now seen corresponding path program 1 times [2023-11-24 21:42:16,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:16,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928385843] [2023-11-24 21:42:16,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:16,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:16,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:42:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:16,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:16,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-24 21:42:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:16,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-24 21:42:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:16,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-24 21:42:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:16,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:16,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928385843] [2023-11-24 21:42:16,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928385843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:16,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:16,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:42:16,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3763190] [2023-11-24 21:42:16,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:16,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:16,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:16,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:16,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:16,833 INFO L87 Difference]: Start difference. First operand 4752 states and 7389 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:19,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:19,371 INFO L93 Difference]: Finished difference Result 16604 states and 26062 transitions. [2023-11-24 21:42:19,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 21:42:19,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-11-24 21:42:19,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:19,460 INFO L225 Difference]: With dead ends: 16604 [2023-11-24 21:42:19,461 INFO L226 Difference]: Without dead ends: 11862 [2023-11-24 21:42:19,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:42:19,483 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 582 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:19,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 907 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-24 21:42:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11862 states. [2023-11-24 21:42:20,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11862 to 9339. [2023-11-24 21:42:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9339 states, 8162 states have (on average 1.5344278363146289) internal successors, (12524), 8227 states have internal predecessors, (12524), 722 states have call successors, (722), 390 states have call predecessors, (722), 454 states have return successors, (1515), 785 states have call predecessors, (1515), 722 states have call successors, (1515) [2023-11-24 21:42:20,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9339 states to 9339 states and 14761 transitions. [2023-11-24 21:42:20,480 INFO L78 Accepts]: Start accepts. Automaton has 9339 states and 14761 transitions. Word has length 80 [2023-11-24 21:42:20,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:20,480 INFO L495 AbstractCegarLoop]: Abstraction has 9339 states and 14761 transitions. [2023-11-24 21:42:20,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:20,481 INFO L276 IsEmpty]: Start isEmpty. Operand 9339 states and 14761 transitions. [2023-11-24 21:42:20,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-24 21:42:20,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:20,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:20,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:42:20,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:20,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:20,495 INFO L85 PathProgramCache]: Analyzing trace with hash 830221335, now seen corresponding path program 1 times [2023-11-24 21:42:20,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:20,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204326192] [2023-11-24 21:42:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:20,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:20,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:42:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:20,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-24 21:42:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:20,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-24 21:42:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:20,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-24 21:42:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:20,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:20,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204326192] [2023-11-24 21:42:20,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204326192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:20,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:20,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:42:20,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071172017] [2023-11-24 21:42:20,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:20,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:42:20,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:20,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:42:20,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:42:20,618 INFO L87 Difference]: Start difference. First operand 9339 states and 14761 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:23,061 INFO L93 Difference]: Finished difference Result 26478 states and 41848 transitions. [2023-11-24 21:42:23,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:42:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-11-24 21:42:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:23,147 INFO L225 Difference]: With dead ends: 26478 [2023-11-24 21:42:23,148 INFO L226 Difference]: Without dead ends: 17150 [2023-11-24 21:42:23,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:42:23,183 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 782 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:23,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 694 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-24 21:42:23,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17150 states. [2023-11-24 21:42:24,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17150 to 13994. [2023-11-24 21:42:24,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13994 states, 12205 states have (on average 1.5231462515362557) internal successors, (18590), 12335 states have internal predecessors, (18590), 1104 states have call successors, (1104), 588 states have call predecessors, (1104), 684 states have return successors, (2141), 1134 states have call predecessors, (2141), 1104 states have call successors, (2141) [2023-11-24 21:42:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13994 states to 13994 states and 21835 transitions. [2023-11-24 21:42:24,719 INFO L78 Accepts]: Start accepts. Automaton has 13994 states and 21835 transitions. Word has length 80 [2023-11-24 21:42:24,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:24,722 INFO L495 AbstractCegarLoop]: Abstraction has 13994 states and 21835 transitions. [2023-11-24 21:42:24,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:24,722 INFO L276 IsEmpty]: Start isEmpty. Operand 13994 states and 21835 transitions. [2023-11-24 21:42:24,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-24 21:42:24,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:24,781 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-24 21:42:24,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:42:24,781 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:24,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:24,782 INFO L85 PathProgramCache]: Analyzing trace with hash 119505889, now seen corresponding path program 1 times [2023-11-24 21:42:24,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:24,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739375924] [2023-11-24 21:42:24,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:24,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:24,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:42:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:24,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:24,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-24 21:42:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:25,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-24 21:42:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:25,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-24 21:42:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-24 21:42:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:25,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 21:42:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:25,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-24 21:42:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 21:42:25,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:25,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739375924] [2023-11-24 21:42:25,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739375924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:42:25,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942987469] [2023-11-24 21:42:25,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:25,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:42:25,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:42:25,062 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:42:25,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:42:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:25,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:42:25,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:42:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-24 21:42:25,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:42:25,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942987469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:25,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 21:42:25,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-24 21:42:25,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021663733] [2023-11-24 21:42:25,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:25,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:42:25,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:25,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:42:25,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:25,348 INFO L87 Difference]: Start difference. First operand 13994 states and 21835 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 21:42:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:27,098 INFO L93 Difference]: Finished difference Result 41663 states and 65423 transitions. [2023-11-24 21:42:27,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:42:27,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2023-11-24 21:42:27,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:27,207 INFO L225 Difference]: With dead ends: 41663 [2023-11-24 21:42:27,208 INFO L226 Difference]: Without dead ends: 27680 [2023-11-24 21:42:27,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:27,254 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 204 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:27,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 432 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:42:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27680 states. [2023-11-24 21:42:29,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27680 to 27580. [2023-11-24 21:42:29,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27580 states, 24057 states have (on average 1.5184353826329136) internal successors, (36529), 24316 states have internal predecessors, (36529), 2154 states have call successors, (2154), 1176 states have call predecessors, (2154), 1368 states have return successors, (4165), 2151 states have call predecessors, (4165), 2154 states have call successors, (4165) [2023-11-24 21:42:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27580 states to 27580 states and 42848 transitions. [2023-11-24 21:42:29,195 INFO L78 Accepts]: Start accepts. Automaton has 27580 states and 42848 transitions. Word has length 130 [2023-11-24 21:42:29,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:29,196 INFO L495 AbstractCegarLoop]: Abstraction has 27580 states and 42848 transitions. [2023-11-24 21:42:29,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 21:42:29,196 INFO L276 IsEmpty]: Start isEmpty. Operand 27580 states and 42848 transitions. [2023-11-24 21:42:29,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-24 21:42:29,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:29,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-24 21:42:29,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:42:29,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 21:42:29,495 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:29,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:29,495 INFO L85 PathProgramCache]: Analyzing trace with hash -564427071, now seen corresponding path program 1 times [2023-11-24 21:42:29,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:29,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634944163] [2023-11-24 21:42:29,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:29,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:29,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:42:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:29,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:29,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-24 21:42:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:29,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-24 21:42:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:29,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-24 21:42:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:29,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-24 21:42:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:29,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 21:42:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:29,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-24 21:42:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 21:42:29,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:29,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634944163] [2023-11-24 21:42:29,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634944163] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:42:29,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49121797] [2023-11-24 21:42:29,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:29,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:42:29,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:42:29,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:42:29,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98f3da55-61d8-4991-86ad-ce0f9c4f879c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:42:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:29,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:42:29,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:42:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-24 21:42:29,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:42:29,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49121797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:29,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 21:42:29,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-24 21:42:29,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4148269] [2023-11-24 21:42:29,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:29,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:42:29,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:29,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:42:29,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:29,954 INFO L87 Difference]: Start difference. First operand 27580 states and 42848 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 21:42:33,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:33,237 INFO L93 Difference]: Finished difference Result 82125 states and 128430 transitions. [2023-11-24 21:42:33,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:42:33,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2023-11-24 21:42:33,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:33,611 INFO L225 Difference]: With dead ends: 82125 [2023-11-24 21:42:33,611 INFO L226 Difference]: Without dead ends: 54556 [2023-11-24 21:42:33,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:33,673 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 199 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:33,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 432 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:42:33,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54556 states.