./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:47:28,710 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:47:28,882 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:47:28,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:47:28,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:47:28,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:47:28,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:47:28,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:47:28,947 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:47:28,948 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:47:28,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:47:28,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:47:28,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:47:28,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:47:28,952 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:47:28,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:47:28,953 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:47:28,954 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:47:28,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:47:28,955 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:47:28,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:47:28,961 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:47:28,962 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:47:28,962 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:47:28,963 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:47:28,963 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:47:28,963 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:47:28,964 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:47:28,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:47:28,965 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:47:28,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:47:28,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:47:28,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:47:28,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:47:28,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:47:28,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:47:28,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:47:28,969 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:47:28,969 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:47:28,971 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:47:28,972 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:47:28,973 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:47:28,973 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_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 [2023-11-26 10:47:29,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:47:29,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:47:29,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:47:29,381 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:47:29,381 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:47:29,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2023-11-26 10:47:33,000 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:47:33,455 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:47:33,459 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2023-11-26 10:47:33,484 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/data/ff87b0094/846751857c2344baa4140bffb2b91cc3/FLAG257031c68 [2023-11-26 10:47:33,519 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/data/ff87b0094/846751857c2344baa4140bffb2b91cc3 [2023-11-26 10:47:33,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:47:33,533 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:47:33,535 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:47:33,535 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:47:33,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:47:33,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:47:33" (1/1) ... [2023-11-26 10:47:33,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487b5944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:33, skipping insertion in model container [2023-11-26 10:47:33,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:47:33" (1/1) ... [2023-11-26 10:47:33,593 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:47:33,998 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_04c3aca1-f6df-4a0e-8369-acc691029e8a/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2023-11-26 10:47:34,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:47:34,021 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:47:34,175 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_04c3aca1-f6df-4a0e-8369-acc691029e8a/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2023-11-26 10:47:34,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:47:34,208 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:47:34,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:34 WrapperNode [2023-11-26 10:47:34,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:47:34,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:47:34,215 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:47:34,215 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:47:34,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:34" (1/1) ... [2023-11-26 10:47:34,250 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:34" (1/1) ... [2023-11-26 10:47:34,318 INFO L138 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 501 [2023-11-26 10:47:34,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:47:34,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:47:34,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:47:34,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:47:34,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:34" (1/1) ... [2023-11-26 10:47:34,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:34" (1/1) ... [2023-11-26 10:47:34,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:34" (1/1) ... [2023-11-26 10:47:34,382 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]. [2023-11-26 10:47:34,390 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:34" (1/1) ... [2023-11-26 10:47:34,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:34" (1/1) ... [2023-11-26 10:47:34,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:34" (1/1) ... [2023-11-26 10:47:34,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:34" (1/1) ... [2023-11-26 10:47:34,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:34" (1/1) ... [2023-11-26 10:47:34,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:34" (1/1) ... [2023-11-26 10:47:34,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:47:34,472 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:47:34,473 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:47:34,473 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:47:34,474 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:34" (1/1) ... [2023-11-26 10:47:34,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:47:34,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:34,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:34,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:47:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2023-11-26 10:47:34,595 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2023-11-26 10:47:34,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:47:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2023-11-26 10:47:34,597 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2023-11-26 10:47:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-26 10:47:34,597 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-26 10:47:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:47:34,599 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:47:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:47:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2023-11-26 10:47:34,601 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2023-11-26 10:47:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:47:34,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:47:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2023-11-26 10:47:34,601 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2023-11-26 10:47:34,730 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:47:34,735 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:47:35,529 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:47:35,616 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:47:35,616 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:47:35,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:47:35 BoogieIcfgContainer [2023-11-26 10:47:35,617 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:47:35,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:47:35,621 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:47:35,626 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:47:35,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:47:33" (1/3) ... [2023-11-26 10:47:35,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4939cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:47:35, skipping insertion in model container [2023-11-26 10:47:35,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:34" (2/3) ... [2023-11-26 10:47:35,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4939cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:47:35, skipping insertion in model container [2023-11-26 10:47:35,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:47:35" (3/3) ... [2023-11-26 10:47:35,630 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2023-11-26 10:47:35,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:47:35,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:47:35,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:47:35,737 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;@4005fe35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:47:35,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:47:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 127 states have (on average 1.6062992125984252) internal successors, (204), 128 states have internal predecessors, (204), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-26 10:47:35,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 10:47:35,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:35,758 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] [2023-11-26 10:47:35,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:35,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:35,767 INFO L85 PathProgramCache]: Analyzing trace with hash 416796339, now seen corresponding path program 1 times [2023-11-26 10:47:35,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:35,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306950314] [2023-11-26 10:47:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:35,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:36,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:36,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:36,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306950314] [2023-11-26 10:47:36,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306950314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:36,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:36,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:47:36,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158540318] [2023-11-26 10:47:36,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:36,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:47:36,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:36,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:47:36,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:47:36,127 INFO L87 Difference]: Start difference. First operand has 164 states, 127 states have (on average 1.6062992125984252) internal successors, (204), 128 states have internal predecessors, (204), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:47:36,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:36,256 INFO L93 Difference]: Finished difference Result 313 states and 525 transitions. [2023-11-26 10:47:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:47:36,263 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-26 10:47:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:36,277 INFO L225 Difference]: With dead ends: 313 [2023-11-26 10:47:36,277 INFO L226 Difference]: Without dead ends: 162 [2023-11-26 10:47:36,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:47:36,289 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:36,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 253 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:47:36,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-26 10:47:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-11-26 10:47:36,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 126 states have (on average 1.5793650793650793) internal successors, (199), 126 states have internal predecessors, (199), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-26 10:47:36,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 257 transitions. [2023-11-26 10:47:36,366 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 257 transitions. Word has length 23 [2023-11-26 10:47:36,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:36,367 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 257 transitions. [2023-11-26 10:47:36,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:47:36,368 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 257 transitions. [2023-11-26 10:47:36,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 10:47:36,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:36,371 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] [2023-11-26 10:47:36,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:47:36,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:36,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:36,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1577348367, now seen corresponding path program 1 times [2023-11-26 10:47:36,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:36,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640938224] [2023-11-26 10:47:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:36,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:36,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:36,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:36,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640938224] [2023-11-26 10:47:36,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640938224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:36,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:36,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:47:36,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574143638] [2023-11-26 10:47:36,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:36,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:47:36,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:36,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:47:36,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:47:36,830 INFO L87 Difference]: Start difference. First operand 162 states and 257 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:47:37,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:37,066 INFO L93 Difference]: Finished difference Result 415 states and 665 transitions. [2023-11-26 10:47:37,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:47:37,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-26 10:47:37,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:37,072 INFO L225 Difference]: With dead ends: 415 [2023-11-26 10:47:37,073 INFO L226 Difference]: Without dead ends: 266 [2023-11-26 10:47:37,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:47:37,078 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 130 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:37,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1213 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:47:37,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-26 10:47:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 162. [2023-11-26 10:47:37,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 126 states have (on average 1.4841269841269842) internal successors, (187), 126 states have internal predecessors, (187), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-26 10:47:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 245 transitions. [2023-11-26 10:47:37,126 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 245 transitions. Word has length 23 [2023-11-26 10:47:37,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:37,127 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 245 transitions. [2023-11-26 10:47:37,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:47:37,127 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 245 transitions. [2023-11-26 10:47:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 10:47:37,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:37,129 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] [2023-11-26 10:47:37,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:47:37,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:37,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:37,130 INFO L85 PathProgramCache]: Analyzing trace with hash -2120967277, now seen corresponding path program 1 times [2023-11-26 10:47:37,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:37,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595404251] [2023-11-26 10:47:37,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:37,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:37,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:37,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:37,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595404251] [2023-11-26 10:47:37,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595404251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:37,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:37,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:47:37,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704726507] [2023-11-26 10:47:37,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:37,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:37,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:37,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:37,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:37,569 INFO L87 Difference]: Start difference. First operand 162 states and 245 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:47:37,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:37,718 INFO L93 Difference]: Finished difference Result 312 states and 481 transitions. [2023-11-26 10:47:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:47:37,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2023-11-26 10:47:37,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:37,725 INFO L225 Difference]: With dead ends: 312 [2023-11-26 10:47:37,726 INFO L226 Difference]: Without dead ends: 166 [2023-11-26 10:47:37,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:37,734 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 5 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:37,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 692 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:47:37,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-26 10:47:37,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-11-26 10:47:37,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 129 states have (on average 1.4728682170542635) internal successors, (190), 129 states have internal predecessors, (190), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-26 10:47:37,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 248 transitions. [2023-11-26 10:47:37,806 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 248 transitions. Word has length 34 [2023-11-26 10:47:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:37,808 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 248 transitions. [2023-11-26 10:47:37,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:47:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 248 transitions. [2023-11-26 10:47:37,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-26 10:47:37,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:37,816 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:47:37,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:47:37,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:37,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1787555156, now seen corresponding path program 1 times [2023-11-26 10:47:37,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:37,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841608344] [2023-11-26 10:47:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:37,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:37,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:37,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:37,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-26 10:47:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:47:38,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:38,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841608344] [2023-11-26 10:47:38,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841608344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:38,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:38,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:47:38,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261514963] [2023-11-26 10:47:38,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:38,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:47:38,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:38,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:47:38,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:38,015 INFO L87 Difference]: Start difference. First operand 166 states and 248 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:47:38,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:38,141 INFO L93 Difference]: Finished difference Result 458 states and 695 transitions. [2023-11-26 10:47:38,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:47:38,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2023-11-26 10:47:38,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:38,155 INFO L225 Difference]: With dead ends: 458 [2023-11-26 10:47:38,157 INFO L226 Difference]: Without dead ends: 308 [2023-11-26 10:47:38,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:38,166 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 206 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:38,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 476 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:47:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-26 10:47:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2023-11-26 10:47:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 232 states have (on average 1.4913793103448276) internal successors, (346), 233 states have internal predecessors, (346), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-26 10:47:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 460 transitions. [2023-11-26 10:47:38,238 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 460 transitions. Word has length 48 [2023-11-26 10:47:38,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:38,238 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 460 transitions. [2023-11-26 10:47:38,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:47:38,239 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 460 transitions. [2023-11-26 10:47:38,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 10:47:38,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:38,242 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:47:38,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:47:38,243 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:38,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:38,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1878750554, now seen corresponding path program 1 times [2023-11-26 10:47:38,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:38,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001147945] [2023-11-26 10:47:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:38,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:38,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 10:47:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:47:38,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:38,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001147945] [2023-11-26 10:47:38,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001147945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:38,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:38,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:47:38,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650615666] [2023-11-26 10:47:38,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:38,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:47:38,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:38,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:47:38,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:38,400 INFO L87 Difference]: Start difference. First operand 304 states and 460 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:47:38,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:38,525 INFO L93 Difference]: Finished difference Result 860 states and 1310 transitions. [2023-11-26 10:47:38,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:47:38,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2023-11-26 10:47:38,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:38,536 INFO L225 Difference]: With dead ends: 860 [2023-11-26 10:47:38,537 INFO L226 Difference]: Without dead ends: 572 [2023-11-26 10:47:38,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:38,543 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 202 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:38,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 491 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:47:38,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-11-26 10:47:38,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 559. [2023-11-26 10:47:38,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 417 states have (on average 1.4916067146282974) internal successors, (622), 420 states have internal predecessors, (622), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2023-11-26 10:47:38,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 848 transitions. [2023-11-26 10:47:38,624 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 848 transitions. Word has length 49 [2023-11-26 10:47:38,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:38,626 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 848 transitions. [2023-11-26 10:47:38,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:47:38,628 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 848 transitions. [2023-11-26 10:47:38,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 10:47:38,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:38,641 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:47:38,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:47:38,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:38,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash 598886876, now seen corresponding path program 1 times [2023-11-26 10:47:38,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:38,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40615296] [2023-11-26 10:47:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:38,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:38,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:38,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 10:47:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:47:38,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:38,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40615296] [2023-11-26 10:47:38,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40615296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:38,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:38,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:47:38,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907471456] [2023-11-26 10:47:38,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:38,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:47:38,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:38,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:47:38,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:38,832 INFO L87 Difference]: Start difference. First operand 559 states and 848 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:47:39,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:39,129 INFO L93 Difference]: Finished difference Result 1180 states and 1795 transitions. [2023-11-26 10:47:39,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:47:39,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2023-11-26 10:47:39,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:39,140 INFO L225 Difference]: With dead ends: 1180 [2023-11-26 10:47:39,140 INFO L226 Difference]: Without dead ends: 637 [2023-11-26 10:47:39,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:47:39,144 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 333 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:39,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 619 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:47:39,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-11-26 10:47:39,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 629. [2023-11-26 10:47:39,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 479 states have (on average 1.4822546972860124) internal successors, (710), 482 states have internal predecessors, (710), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-11-26 10:47:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 944 transitions. [2023-11-26 10:47:39,250 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 944 transitions. Word has length 49 [2023-11-26 10:47:39,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:39,251 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 944 transitions. [2023-11-26 10:47:39,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:47:39,252 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 944 transitions. [2023-11-26 10:47:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 10:47:39,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:39,256 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:47:39,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:47:39,257 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:39,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:39,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1052158445, now seen corresponding path program 1 times [2023-11-26 10:47:39,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:39,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949495928] [2023-11-26 10:47:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:39,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:39,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:47:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:47:39,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:39,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949495928] [2023-11-26 10:47:39,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949495928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:39,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:39,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:47:39,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737457105] [2023-11-26 10:47:39,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:39,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:47:39,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:39,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:47:39,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:39,428 INFO L87 Difference]: Start difference. First operand 629 states and 944 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:47:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:39,671 INFO L93 Difference]: Finished difference Result 1184 states and 1795 transitions. [2023-11-26 10:47:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:47:39,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2023-11-26 10:47:39,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:39,677 INFO L225 Difference]: With dead ends: 1184 [2023-11-26 10:47:39,677 INFO L226 Difference]: Without dead ends: 641 [2023-11-26 10:47:39,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:47:39,684 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 330 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:39,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 621 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:47:39,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-11-26 10:47:39,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 637. [2023-11-26 10:47:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 487 states have (on average 1.4743326488706365) internal successors, (718), 490 states have internal predecessors, (718), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-11-26 10:47:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 952 transitions. [2023-11-26 10:47:39,761 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 952 transitions. Word has length 50 [2023-11-26 10:47:39,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:39,763 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 952 transitions. [2023-11-26 10:47:39,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:47:39,764 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 952 transitions. [2023-11-26 10:47:39,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 10:47:39,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:39,765 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:47:39,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:47:39,766 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:39,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:39,767 INFO L85 PathProgramCache]: Analyzing trace with hash -130272225, now seen corresponding path program 1 times [2023-11-26 10:47:39,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:39,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113586351] [2023-11-26 10:47:39,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:39,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:40,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 10:47:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:47:40,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:40,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113586351] [2023-11-26 10:47:40,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113586351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:40,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:40,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:47:40,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474365109] [2023-11-26 10:47:40,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:40,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:40,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:40,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:40,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:40,046 INFO L87 Difference]: Start difference. First operand 637 states and 952 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:47:40,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:40,283 INFO L93 Difference]: Finished difference Result 1184 states and 1787 transitions. [2023-11-26 10:47:40,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:47:40,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2023-11-26 10:47:40,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:40,292 INFO L225 Difference]: With dead ends: 1184 [2023-11-26 10:47:40,292 INFO L226 Difference]: Without dead ends: 641 [2023-11-26 10:47:40,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:40,299 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 52 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:40,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 618 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:47:40,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-11-26 10:47:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 637. [2023-11-26 10:47:40,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 487 states have (on average 1.4661190965092403) internal successors, (714), 490 states have internal predecessors, (714), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-11-26 10:47:40,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 948 transitions. [2023-11-26 10:47:40,381 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 948 transitions. Word has length 52 [2023-11-26 10:47:40,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:40,381 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 948 transitions. [2023-11-26 10:47:40,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:47:40,382 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 948 transitions. [2023-11-26 10:47:40,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 10:47:40,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:40,383 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:47:40,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:47:40,384 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:40,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:40,385 INFO L85 PathProgramCache]: Analyzing trace with hash -682908374, now seen corresponding path program 1 times [2023-11-26 10:47:40,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:40,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939120370] [2023-11-26 10:47:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:40,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:40,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:40,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:47:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:40,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:47:40,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:40,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939120370] [2023-11-26 10:47:40,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939120370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:40,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:40,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:47:40,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86156807] [2023-11-26 10:47:40,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:40,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:40,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:40,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:40,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:40,647 INFO L87 Difference]: Start difference. First operand 637 states and 948 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 10:47:40,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:40,777 INFO L93 Difference]: Finished difference Result 1200 states and 1807 transitions. [2023-11-26 10:47:40,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:47:40,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2023-11-26 10:47:40,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:40,785 INFO L225 Difference]: With dead ends: 1200 [2023-11-26 10:47:40,786 INFO L226 Difference]: Without dead ends: 657 [2023-11-26 10:47:40,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:40,791 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 6 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:40,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 704 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:47:40,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-11-26 10:47:40,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2023-11-26 10:47:40,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 503 states have (on average 1.4512922465208749) internal successors, (730), 506 states have internal predecessors, (730), 117 states have call successors, (117), 36 states have call predecessors, (117), 36 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-11-26 10:47:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 964 transitions. [2023-11-26 10:47:40,899 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 964 transitions. Word has length 53 [2023-11-26 10:47:40,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:40,900 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 964 transitions. [2023-11-26 10:47:40,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 10:47:40,900 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 964 transitions. [2023-11-26 10:47:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 10:47:40,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:40,902 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:47:40,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:47:40,902 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:40,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:40,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1527575408, now seen corresponding path program 1 times [2023-11-26 10:47:40,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:40,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953193905] [2023-11-26 10:47:40,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:40,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:41,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:41,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:47:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:41,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:47:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:47:41,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:41,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953193905] [2023-11-26 10:47:41,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953193905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:41,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:41,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:47:41,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049182299] [2023-11-26 10:47:41,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:41,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:41,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:41,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:41,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:41,160 INFO L87 Difference]: Start difference. First operand 657 states and 964 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 10:47:41,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:41,287 INFO L93 Difference]: Finished difference Result 1240 states and 1851 transitions. [2023-11-26 10:47:41,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:47:41,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2023-11-26 10:47:41,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:41,293 INFO L225 Difference]: With dead ends: 1240 [2023-11-26 10:47:41,294 INFO L226 Difference]: Without dead ends: 677 [2023-11-26 10:47:41,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:41,299 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 6 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:41,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 690 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:47:41,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-11-26 10:47:41,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2023-11-26 10:47:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 519 states have (on average 1.4373795761078998) internal successors, (746), 522 states have internal predecessors, (746), 117 states have call successors, (117), 40 states have call predecessors, (117), 40 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-11-26 10:47:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 980 transitions. [2023-11-26 10:47:41,371 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 980 transitions. Word has length 61 [2023-11-26 10:47:41,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:41,372 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 980 transitions. [2023-11-26 10:47:41,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 10:47:41,373 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 980 transitions. [2023-11-26 10:47:41,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 10:47:41,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:41,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:41,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:47:41,375 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:41,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:41,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1184701862, now seen corresponding path program 1 times [2023-11-26 10:47:41,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:41,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299688191] [2023-11-26 10:47:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:41,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:41,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:41,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:41,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:47:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:41,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:47:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:41,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:47:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:47:41,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:41,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299688191] [2023-11-26 10:47:41,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299688191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:41,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:41,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:47:41,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35992261] [2023-11-26 10:47:41,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:41,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:41,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:41,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:41,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:41,605 INFO L87 Difference]: Start difference. First operand 677 states and 980 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-26 10:47:41,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:41,765 INFO L93 Difference]: Finished difference Result 1276 states and 1867 transitions. [2023-11-26 10:47:41,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:47:41,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2023-11-26 10:47:41,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:41,774 INFO L225 Difference]: With dead ends: 1276 [2023-11-26 10:47:41,774 INFO L226 Difference]: Without dead ends: 693 [2023-11-26 10:47:41,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:41,778 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 5 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:41,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 699 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:47:41,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-11-26 10:47:41,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2023-11-26 10:47:41,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 531 states have (on average 1.4274952919020716) internal successors, (758), 534 states have internal predecessors, (758), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-11-26 10:47:41,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 992 transitions. [2023-11-26 10:47:41,878 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 992 transitions. Word has length 69 [2023-11-26 10:47:41,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:41,878 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 992 transitions. [2023-11-26 10:47:41,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-26 10:47:41,879 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 992 transitions. [2023-11-26 10:47:41,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 10:47:41,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:41,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:41,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:47:41,882 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:41,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:41,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1211757441, now seen corresponding path program 1 times [2023-11-26 10:47:41,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:41,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217522982] [2023-11-26 10:47:41,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:41,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:47:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:47:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:47:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:47:42,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:42,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217522982] [2023-11-26 10:47:42,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217522982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:42,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:42,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:47:42,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781638553] [2023-11-26 10:47:42,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:42,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:42,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:42,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:42,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:42,109 INFO L87 Difference]: Start difference. First operand 693 states and 992 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-26 10:47:42,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:42,251 INFO L93 Difference]: Finished difference Result 1312 states and 1907 transitions. [2023-11-26 10:47:42,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:47:42,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2023-11-26 10:47:42,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:42,259 INFO L225 Difference]: With dead ends: 1312 [2023-11-26 10:47:42,259 INFO L226 Difference]: Without dead ends: 713 [2023-11-26 10:47:42,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:42,263 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 6 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:42,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 690 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:47:42,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-11-26 10:47:42,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2023-11-26 10:47:42,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 547 states have (on average 1.4149908592321756) internal successors, (774), 550 states have internal predecessors, (774), 117 states have call successors, (117), 48 states have call predecessors, (117), 48 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-11-26 10:47:42,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1008 transitions. [2023-11-26 10:47:42,338 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1008 transitions. Word has length 69 [2023-11-26 10:47:42,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:42,338 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1008 transitions. [2023-11-26 10:47:42,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-26 10:47:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1008 transitions. [2023-11-26 10:47:42,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 10:47:42,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:42,342 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:42,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:47:42,342 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:42,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:42,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1107298427, now seen corresponding path program 1 times [2023-11-26 10:47:42,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:42,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98046464] [2023-11-26 10:47:42,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:42,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:47:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:47:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:47:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:47:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 10:47:42,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:42,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98046464] [2023-11-26 10:47:42,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98046464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:42,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:42,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:47:42,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672548296] [2023-11-26 10:47:42,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:42,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:42,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:42,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:42,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:42,572 INFO L87 Difference]: Start difference. First operand 713 states and 1008 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-26 10:47:42,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:42,684 INFO L93 Difference]: Finished difference Result 1356 states and 1935 transitions. [2023-11-26 10:47:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:47:42,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 77 [2023-11-26 10:47:42,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:42,691 INFO L225 Difference]: With dead ends: 1356 [2023-11-26 10:47:42,691 INFO L226 Difference]: Without dead ends: 737 [2023-11-26 10:47:42,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:42,694 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 7 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:42,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 701 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:47:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2023-11-26 10:47:42,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2023-11-26 10:47:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 567 states have (on average 1.400352733686067) internal successors, (794), 570 states have internal predecessors, (794), 117 states have call successors, (117), 52 states have call predecessors, (117), 52 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-11-26 10:47:42,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1028 transitions. [2023-11-26 10:47:42,761 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1028 transitions. Word has length 77 [2023-11-26 10:47:42,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:42,762 INFO L495 AbstractCegarLoop]: Abstraction has 737 states and 1028 transitions. [2023-11-26 10:47:42,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-26 10:47:42,762 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1028 transitions. [2023-11-26 10:47:42,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 10:47:42,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:42,765 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:42,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 10:47:42,765 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:42,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:42,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1484136390, now seen corresponding path program 1 times [2023-11-26 10:47:42,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:42,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76437672] [2023-11-26 10:47:42,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:42,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:47:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:47:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:47:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:47:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:47:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 10:47:43,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:43,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76437672] [2023-11-26 10:47:43,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76437672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:43,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:43,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:47:43,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817002258] [2023-11-26 10:47:43,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:43,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:47:43,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:43,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:47:43,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:47:43,147 INFO L87 Difference]: Start difference. First operand 737 states and 1028 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 10:47:43,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:43,618 INFO L93 Difference]: Finished difference Result 2086 states and 2926 transitions. [2023-11-26 10:47:43,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:47:43,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-11-26 10:47:43,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:43,633 INFO L225 Difference]: With dead ends: 2086 [2023-11-26 10:47:43,633 INFO L226 Difference]: Without dead ends: 1443 [2023-11-26 10:47:43,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:47:43,637 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 251 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:43,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 1328 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:47:43,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2023-11-26 10:47:43,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 882. [2023-11-26 10:47:43,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 675 states have (on average 1.3911111111111112) internal successors, (939), 679 states have internal predecessors, (939), 141 states have call successors, (141), 65 states have call predecessors, (141), 65 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2023-11-26 10:47:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1221 transitions. [2023-11-26 10:47:43,769 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1221 transitions. Word has length 80 [2023-11-26 10:47:43,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:43,770 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1221 transitions. [2023-11-26 10:47:43,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 10:47:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1221 transitions. [2023-11-26 10:47:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-26 10:47:43,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:43,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:43,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 10:47:43,772 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:43,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash -861295851, now seen corresponding path program 1 times [2023-11-26 10:47:43,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:43,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394908459] [2023-11-26 10:47:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:43,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:47:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:47:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:47:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:47:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 10:47:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 10:47:43,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:43,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394908459] [2023-11-26 10:47:43,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394908459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:43,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:43,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:47:43,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386017672] [2023-11-26 10:47:43,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:43,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:43,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:43,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:43,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:43,940 INFO L87 Difference]: Start difference. First operand 882 states and 1221 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 10:47:44,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:44,082 INFO L93 Difference]: Finished difference Result 1653 states and 2307 transitions. [2023-11-26 10:47:44,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:47:44,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 84 [2023-11-26 10:47:44,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:44,090 INFO L225 Difference]: With dead ends: 1653 [2023-11-26 10:47:44,090 INFO L226 Difference]: Without dead ends: 902 [2023-11-26 10:47:44,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:44,094 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 5 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:44,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 699 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:47:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-11-26 10:47:44,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 902. [2023-11-26 10:47:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 690 states have (on average 1.382608695652174) internal successors, (954), 694 states have internal predecessors, (954), 141 states have call successors, (141), 70 states have call predecessors, (141), 70 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2023-11-26 10:47:44,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1236 transitions. [2023-11-26 10:47:44,196 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1236 transitions. Word has length 84 [2023-11-26 10:47:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:44,197 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1236 transitions. [2023-11-26 10:47:44,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 10:47:44,198 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1236 transitions. [2023-11-26 10:47:44,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-26 10:47:44,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:44,200 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:44,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 10:47:44,201 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:44,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:44,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1191143078, now seen corresponding path program 1 times [2023-11-26 10:47:44,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:44,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436479081] [2023-11-26 10:47:44,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:44,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:47:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:47:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:47:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:47:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:47:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-26 10:47:44,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:44,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436479081] [2023-11-26 10:47:44,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436479081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:44,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:44,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:47:44,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467772647] [2023-11-26 10:47:44,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:44,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:47:44,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:47:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:47:44,530 INFO L87 Difference]: Start difference. First operand 902 states and 1236 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 10:47:44,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:44,789 INFO L93 Difference]: Finished difference Result 1299 states and 1882 transitions. [2023-11-26 10:47:44,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:47:44,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 83 [2023-11-26 10:47:44,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:44,802 INFO L225 Difference]: With dead ends: 1299 [2023-11-26 10:47:44,803 INFO L226 Difference]: Without dead ends: 1297 [2023-11-26 10:47:44,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:47:44,805 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 181 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:44,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1834 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:47:44,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2023-11-26 10:47:44,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 904. [2023-11-26 10:47:44,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 690 states have (on average 1.382608695652174) internal successors, (954), 695 states have internal predecessors, (954), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 137 states have call predecessors, (142), 142 states have call successors, (142) [2023-11-26 10:47:44,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1238 transitions. [2023-11-26 10:47:44,944 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1238 transitions. Word has length 83 [2023-11-26 10:47:44,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:44,945 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1238 transitions. [2023-11-26 10:47:44,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 10:47:44,945 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1238 transitions. [2023-11-26 10:47:44,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-26 10:47:44,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:44,948 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:44,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 10:47:44,949 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:44,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:44,950 INFO L85 PathProgramCache]: Analyzing trace with hash 358448366, now seen corresponding path program 1 times [2023-11-26 10:47:44,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:44,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644841634] [2023-11-26 10:47:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:44,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:47:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:47:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:47:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:47:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:47:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 10:47:45,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:45,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644841634] [2023-11-26 10:47:45,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644841634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:45,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:45,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:47:45,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765878890] [2023-11-26 10:47:45,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:45,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:47:45,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:45,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:47:45,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:47:45,145 INFO L87 Difference]: Start difference. First operand 904 states and 1238 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 10:47:45,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:45,420 INFO L93 Difference]: Finished difference Result 1692 states and 2333 transitions. [2023-11-26 10:47:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:47:45,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 86 [2023-11-26 10:47:45,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:45,427 INFO L225 Difference]: With dead ends: 1692 [2023-11-26 10:47:45,428 INFO L226 Difference]: Without dead ends: 960 [2023-11-26 10:47:45,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:47:45,431 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 229 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:45,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 1381 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:47:45,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-11-26 10:47:45,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 916. [2023-11-26 10:47:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 707 states have (on average 1.3804809052333804) internal successors, (976), 716 states have internal predecessors, (976), 136 states have call successors, (136), 72 states have call predecessors, (136), 72 states have return successors, (136), 127 states have call predecessors, (136), 136 states have call successors, (136) [2023-11-26 10:47:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1248 transitions. [2023-11-26 10:47:45,531 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1248 transitions. Word has length 86 [2023-11-26 10:47:45,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:45,532 INFO L495 AbstractCegarLoop]: Abstraction has 916 states and 1248 transitions. [2023-11-26 10:47:45,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 10:47:45,532 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1248 transitions. [2023-11-26 10:47:45,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-26 10:47:45,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:45,536 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:45,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 10:47:45,537 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:45,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:45,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1587701740, now seen corresponding path program 1 times [2023-11-26 10:47:45,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:45,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600581098] [2023-11-26 10:47:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:45,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:47:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:47:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:47:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:47:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:47:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:47:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-26 10:47:45,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:45,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600581098] [2023-11-26 10:47:45,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600581098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:45,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:45,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:47:45,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568135333] [2023-11-26 10:47:45,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:45,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:47:45,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:45,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:47:45,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:47:45,852 INFO L87 Difference]: Start difference. First operand 916 states and 1248 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 10:47:46,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:46,170 INFO L93 Difference]: Finished difference Result 1764 states and 2438 transitions. [2023-11-26 10:47:46,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:47:46,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2023-11-26 10:47:46,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:46,179 INFO L225 Difference]: With dead ends: 1764 [2023-11-26 10:47:46,179 INFO L226 Difference]: Without dead ends: 1010 [2023-11-26 10:47:46,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:47:46,183 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 175 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:46,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1544 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:47:46,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-11-26 10:47:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 905. [2023-11-26 10:47:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 699 states have (on average 1.3791130185979972) internal successors, (964), 708 states have internal predecessors, (964), 134 states have call successors, (134), 71 states have call predecessors, (134), 71 states have return successors, (134), 125 states have call predecessors, (134), 134 states have call successors, (134) [2023-11-26 10:47:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1232 transitions. [2023-11-26 10:47:46,328 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1232 transitions. Word has length 88 [2023-11-26 10:47:46,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:46,329 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 1232 transitions. [2023-11-26 10:47:46,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 10:47:46,329 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1232 transitions. [2023-11-26 10:47:46,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-26 10:47:46,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:46,331 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:46,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 10:47:46,331 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:46,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:46,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1454977024, now seen corresponding path program 1 times [2023-11-26 10:47:46,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:46,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645568248] [2023-11-26 10:47:46,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:46,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:47:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:47:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:47:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:47:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 10:47:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 10:47:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 10:47:46,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:46,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645568248] [2023-11-26 10:47:46,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645568248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:46,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:46,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:47:46,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469737118] [2023-11-26 10:47:46,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:46,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:47:46,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:46,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:47:46,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:47:46,724 INFO L87 Difference]: Start difference. First operand 905 states and 1232 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 10:47:47,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:47,660 INFO L93 Difference]: Finished difference Result 1958 states and 2706 transitions. [2023-11-26 10:47:47,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:47:47,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 89 [2023-11-26 10:47:47,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:47,670 INFO L225 Difference]: With dead ends: 1958 [2023-11-26 10:47:47,670 INFO L226 Difference]: Without dead ends: 1184 [2023-11-26 10:47:47,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:47:47,674 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 610 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:47,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 1582 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:47:47,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2023-11-26 10:47:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 921. [2023-11-26 10:47:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 707 states have (on average 1.3536067892503536) internal successors, (957), 717 states have internal predecessors, (957), 137 states have call successors, (137), 76 states have call predecessors, (137), 76 states have return successors, (137), 127 states have call predecessors, (137), 137 states have call successors, (137) [2023-11-26 10:47:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1231 transitions. [2023-11-26 10:47:47,841 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1231 transitions. Word has length 89 [2023-11-26 10:47:47,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:47,842 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 1231 transitions. [2023-11-26 10:47:47,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 10:47:47,842 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1231 transitions. [2023-11-26 10:47:47,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-26 10:47:47,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:47,844 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:47,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 10:47:47,844 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:47,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:47,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2130270663, now seen corresponding path program 1 times [2023-11-26 10:47:47,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:47,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061998332] [2023-11-26 10:47:47,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:47,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:47,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:47,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:47:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:47,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 10:47:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:47,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 10:47:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:47,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 10:47:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:47,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:47:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:47,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:47:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:47,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:47:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:47:47,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:47,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061998332] [2023-11-26 10:47:47,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061998332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:47,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:47,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:47:47,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579584698] [2023-11-26 10:47:47,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:47,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:47,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:47,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:47,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:47,975 INFO L87 Difference]: Start difference. First operand 921 states and 1231 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:48,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:48,248 INFO L93 Difference]: Finished difference Result 2454 states and 3293 transitions. [2023-11-26 10:47:48,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:47:48,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2023-11-26 10:47:48,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:48,262 INFO L225 Difference]: With dead ends: 2454 [2023-11-26 10:47:48,262 INFO L226 Difference]: Without dead ends: 1715 [2023-11-26 10:47:48,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:48,267 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 190 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:48,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1054 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:47:48,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2023-11-26 10:47:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1488. [2023-11-26 10:47:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1131 states have (on average 1.3448275862068966) internal successors, (1521), 1147 states have internal predecessors, (1521), 231 states have call successors, (231), 125 states have call predecessors, (231), 125 states have return successors, (231), 215 states have call predecessors, (231), 231 states have call successors, (231) [2023-11-26 10:47:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1983 transitions. [2023-11-26 10:47:48,523 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1983 transitions. Word has length 90 [2023-11-26 10:47:48,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:48,524 INFO L495 AbstractCegarLoop]: Abstraction has 1488 states and 1983 transitions. [2023-11-26 10:47:48,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:48,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1983 transitions. [2023-11-26 10:47:48,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-26 10:47:48,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:48,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:48,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 10:47:48,527 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:48,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:48,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2050336594, now seen corresponding path program 1 times [2023-11-26 10:47:48,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:48,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679371340] [2023-11-26 10:47:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:48,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:48,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:47:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:48,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 10:47:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:48,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 10:47:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 10:47:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:48,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:47:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:48,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:47:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:48,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:47:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 10:47:48,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:48,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679371340] [2023-11-26 10:47:48,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679371340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:48,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:48,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:47:48,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278707088] [2023-11-26 10:47:48,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:48,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:47:48,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:48,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:47:48,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:47:48,919 INFO L87 Difference]: Start difference. First operand 1488 states and 1983 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:49,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:49,917 INFO L93 Difference]: Finished difference Result 3292 states and 4441 transitions. [2023-11-26 10:47:49,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:47:49,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2023-11-26 10:47:49,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:49,936 INFO L225 Difference]: With dead ends: 3292 [2023-11-26 10:47:49,936 INFO L226 Difference]: Without dead ends: 2058 [2023-11-26 10:47:49,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:47:49,941 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 560 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:49,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1484 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:47:49,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2023-11-26 10:47:50,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 1515. [2023-11-26 10:47:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1145 states have (on average 1.337117903930131) internal successors, (1531), 1162 states have internal predecessors, (1531), 239 states have call successors, (239), 130 states have call predecessors, (239), 130 states have return successors, (239), 222 states have call predecessors, (239), 239 states have call successors, (239) [2023-11-26 10:47:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2009 transitions. [2023-11-26 10:47:50,220 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2009 transitions. Word has length 92 [2023-11-26 10:47:50,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:50,221 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 2009 transitions. [2023-11-26 10:47:50,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:50,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2009 transitions. [2023-11-26 10:47:50,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-26 10:47:50,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:50,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:50,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 10:47:50,224 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:50,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1554073978, now seen corresponding path program 1 times [2023-11-26 10:47:50,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:50,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918264487] [2023-11-26 10:47:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:50,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:50,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:50,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 10:47:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:50,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 10:47:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:50,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 10:47:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:50,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 10:47:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:50,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 10:47:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:50,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 10:47:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:50,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-26 10:47:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:47:50,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:50,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918264487] [2023-11-26 10:47:50,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918264487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:50,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:50,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:47:50,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176030868] [2023-11-26 10:47:50,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:50,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:50,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:50,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:50,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:50,412 INFO L87 Difference]: Start difference. First operand 1515 states and 2009 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:50,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:50,879 INFO L93 Difference]: Finished difference Result 3793 states and 5057 transitions. [2023-11-26 10:47:50,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:47:50,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2023-11-26 10:47:50,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:50,901 INFO L225 Difference]: With dead ends: 3793 [2023-11-26 10:47:50,901 INFO L226 Difference]: Without dead ends: 2575 [2023-11-26 10:47:50,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:50,907 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 195 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:50,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1092 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:47:50,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2023-11-26 10:47:51,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2394. [2023-11-26 10:47:51,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2394 states, 1787 states have (on average 1.3240067151650812) internal successors, (2366), 1814 states have internal predecessors, (2366), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2023-11-26 10:47:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 3154 transitions. [2023-11-26 10:47:51,429 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 3154 transitions. Word has length 94 [2023-11-26 10:47:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:51,430 INFO L495 AbstractCegarLoop]: Abstraction has 2394 states and 3154 transitions. [2023-11-26 10:47:51,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 3154 transitions. [2023-11-26 10:47:51,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-26 10:47:51,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:51,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:51,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 10:47:51,434 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:51,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:51,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1814016471, now seen corresponding path program 1 times [2023-11-26 10:47:51,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:51,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721879525] [2023-11-26 10:47:51,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:51,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:51,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 10:47:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:51,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:47:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:51,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 10:47:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-26 10:47:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:51,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 10:47:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:51,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:47:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:51,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 10:47:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:51,522 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:47:51,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:51,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721879525] [2023-11-26 10:47:51,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721879525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:51,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:51,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:47:51,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664704986] [2023-11-26 10:47:51,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:51,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:47:51,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:51,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:47:51,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:51,528 INFO L87 Difference]: Start difference. First operand 2394 states and 3154 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:51,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:51,997 INFO L93 Difference]: Finished difference Result 4611 states and 6094 transitions. [2023-11-26 10:47:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:47:51,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2023-11-26 10:47:51,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:52,016 INFO L225 Difference]: With dead ends: 4611 [2023-11-26 10:47:52,016 INFO L226 Difference]: Without dead ends: 2409 [2023-11-26 10:47:52,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:52,023 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 4 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:52,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 447 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:47:52,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2023-11-26 10:47:52,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2397. [2023-11-26 10:47:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 1790 states have (on average 1.323463687150838) internal successors, (2369), 1817 states have internal predecessors, (2369), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2023-11-26 10:47:52,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 3157 transitions. [2023-11-26 10:47:52,386 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 3157 transitions. Word has length 94 [2023-11-26 10:47:52,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:52,387 INFO L495 AbstractCegarLoop]: Abstraction has 2397 states and 3157 transitions. [2023-11-26 10:47:52,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:52,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 3157 transitions. [2023-11-26 10:47:52,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-26 10:47:52,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:52,390 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:52,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-26 10:47:52,391 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:52,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:52,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1948537536, now seen corresponding path program 1 times [2023-11-26 10:47:52,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:52,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082254612] [2023-11-26 10:47:52,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:52,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:52,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 10:47:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:47:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 10:47:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-26 10:47:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 10:47:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:47:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:52,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 10:47:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:47:52,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:52,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082254612] [2023-11-26 10:47:52,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082254612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:52,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:52,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:47:52,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969367775] [2023-11-26 10:47:52,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:52,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:52,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:52,550 INFO L87 Difference]: Start difference. First operand 2397 states and 3157 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:53,141 INFO L93 Difference]: Finished difference Result 5712 states and 7554 transitions. [2023-11-26 10:47:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:47:53,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2023-11-26 10:47:53,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:53,178 INFO L225 Difference]: With dead ends: 5712 [2023-11-26 10:47:53,179 INFO L226 Difference]: Without dead ends: 3729 [2023-11-26 10:47:53,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:53,186 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 189 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:53,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1106 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:47:53,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2023-11-26 10:47:53,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3302. [2023-11-26 10:47:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3302 states, 2456 states have (on average 1.3188110749185669) internal successors, (3239), 2493 states have internal predecessors, (3239), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2023-11-26 10:47:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 4341 transitions. [2023-11-26 10:47:53,696 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 4341 transitions. Word has length 94 [2023-11-26 10:47:53,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:53,697 INFO L495 AbstractCegarLoop]: Abstraction has 3302 states and 4341 transitions. [2023-11-26 10:47:53,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:53,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 4341 transitions. [2023-11-26 10:47:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-26 10:47:53,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:53,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:53,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-26 10:47:53,702 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:53,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1698817225, now seen corresponding path program 1 times [2023-11-26 10:47:53,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:53,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334539963] [2023-11-26 10:47:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:53,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:53,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:53,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:47:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:53,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 10:47:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 10:47:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:47:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:53,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:47:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:53,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 10:47:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:53,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 10:47:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:47:53,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:53,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334539963] [2023-11-26 10:47:53,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334539963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:53,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:53,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:47:53,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040339165] [2023-11-26 10:47:53,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:53,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:53,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:53,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:53,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:53,927 INFO L87 Difference]: Start difference. First operand 3302 states and 4341 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:54,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:54,526 INFO L93 Difference]: Finished difference Result 6282 states and 8276 transitions. [2023-11-26 10:47:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:47:54,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 95 [2023-11-26 10:47:54,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:54,551 INFO L225 Difference]: With dead ends: 6282 [2023-11-26 10:47:54,552 INFO L226 Difference]: Without dead ends: 3042 [2023-11-26 10:47:54,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:54,563 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 75 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:54,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 692 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:47:54,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2023-11-26 10:47:55,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 2939. [2023-11-26 10:47:55,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2170 states have (on average 1.3225806451612903) internal successors, (2870), 2194 states have internal predecessors, (2870), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2023-11-26 10:47:55,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 3874 transitions. [2023-11-26 10:47:55,165 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 3874 transitions. Word has length 95 [2023-11-26 10:47:55,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:55,165 INFO L495 AbstractCegarLoop]: Abstraction has 2939 states and 3874 transitions. [2023-11-26 10:47:55,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:55,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 3874 transitions. [2023-11-26 10:47:55,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-26 10:47:55,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:55,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:55,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-26 10:47:55,168 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:55,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:55,169 INFO L85 PathProgramCache]: Analyzing trace with hash -655751939, now seen corresponding path program 1 times [2023-11-26 10:47:55,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:55,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381775645] [2023-11-26 10:47:55,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:55,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:55,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:47:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:55,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 10:47:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:55,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 10:47:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:55,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:47:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:55,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:47:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:55,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 10:47:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:55,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 10:47:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:47:55,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:55,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381775645] [2023-11-26 10:47:55,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381775645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:55,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:55,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:47:55,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416800549] [2023-11-26 10:47:55,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:55,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:47:55,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:55,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:47:55,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:55,260 INFO L87 Difference]: Start difference. First operand 2939 states and 3874 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:55,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:55,791 INFO L93 Difference]: Finished difference Result 5751 states and 7612 transitions. [2023-11-26 10:47:55,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:47:55,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2023-11-26 10:47:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:55,805 INFO L225 Difference]: With dead ends: 5751 [2023-11-26 10:47:55,806 INFO L226 Difference]: Without dead ends: 2981 [2023-11-26 10:47:55,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:55,816 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 9 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:55,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 447 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:47:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2023-11-26 10:47:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2946. [2023-11-26 10:47:56,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2177 states have (on average 1.3215434083601285) internal successors, (2877), 2201 states have internal predecessors, (2877), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2023-11-26 10:47:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 3881 transitions. [2023-11-26 10:47:56,295 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 3881 transitions. Word has length 97 [2023-11-26 10:47:56,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:56,295 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 3881 transitions. [2023-11-26 10:47:56,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:56,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 3881 transitions. [2023-11-26 10:47:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-26 10:47:56,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:56,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:56,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-26 10:47:56,298 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:56,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:56,299 INFO L85 PathProgramCache]: Analyzing trace with hash 365285769, now seen corresponding path program 1 times [2023-11-26 10:47:56,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:56,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882935677] [2023-11-26 10:47:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:56,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:56,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:47:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:56,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 10:47:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:56,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 10:47:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:56,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:47:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:56,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:47:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:56,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 10:47:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:56,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 10:47:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:47:56,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:56,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882935677] [2023-11-26 10:47:56,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882935677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:56,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:56,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:47:56,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623206301] [2023-11-26 10:47:56,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:56,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:56,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:56,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:56,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:56,467 INFO L87 Difference]: Start difference. First operand 2946 states and 3881 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:56,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:56,925 INFO L93 Difference]: Finished difference Result 5710 states and 7540 transitions. [2023-11-26 10:47:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:47:56,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2023-11-26 10:47:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:56,938 INFO L225 Difference]: With dead ends: 5710 [2023-11-26 10:47:56,938 INFO L226 Difference]: Without dead ends: 2873 [2023-11-26 10:47:56,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:56,948 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 62 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:56,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 685 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:47:56,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2023-11-26 10:47:57,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2708. [2023-11-26 10:47:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 1998 states have (on average 1.3208208208208208) internal successors, (2639), 2017 states have internal predecessors, (2639), 464 states have call successors, (464), 245 states have call predecessors, (464), 245 states have return successors, (464), 445 states have call predecessors, (464), 464 states have call successors, (464) [2023-11-26 10:47:57,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3567 transitions. [2023-11-26 10:47:57,378 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3567 transitions. Word has length 97 [2023-11-26 10:47:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:57,378 INFO L495 AbstractCegarLoop]: Abstraction has 2708 states and 3567 transitions. [2023-11-26 10:47:57,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:47:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3567 transitions. [2023-11-26 10:47:57,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-26 10:47:57,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:57,386 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-26 10:47:57,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-26 10:47:57,387 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:57,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:57,388 INFO L85 PathProgramCache]: Analyzing trace with hash 290510463, now seen corresponding path program 1 times [2023-11-26 10:47:57,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:57,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834713328] [2023-11-26 10:47:57,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:57,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:47:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:47:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:47:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:47:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:47:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:47:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 10:47:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 10:47:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-26 10:47:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-26 10:47:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-26 10:47:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-26 10:47:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-26 10:47:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-26 10:47:57,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834713328] [2023-11-26 10:47:57,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834713328] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036982367] [2023-11-26 10:47:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:57,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:57,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:57,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:57,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:47:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:58,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:47:58,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 10:47:58,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-26 10:47:58,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036982367] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:47:58,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:47:58,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-26 10:47:58,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117553404] [2023-11-26 10:47:58,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:47:58,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 10:47:58,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:58,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 10:47:58,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:47:58,639 INFO L87 Difference]: Start difference. First operand 2708 states and 3567 transitions. Second operand has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 12 states have internal predecessors, (176), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2023-11-26 10:48:01,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:01,027 INFO L93 Difference]: Finished difference Result 6449 states and 8634 transitions. [2023-11-26 10:48:01,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-26 10:48:01,028 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 12 states have internal predecessors, (176), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 141 [2023-11-26 10:48:01,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:01,046 INFO L225 Difference]: With dead ends: 6449 [2023-11-26 10:48:01,047 INFO L226 Difference]: Without dead ends: 3977 [2023-11-26 10:48:01,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 308 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2023-11-26 10:48:01,057 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1379 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:01,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 1754 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 10:48:01,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2023-11-26 10:48:01,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3420. [2023-11-26 10:48:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3420 states, 2531 states have (on average 1.312129593046227) internal successors, (3321), 2555 states have internal predecessors, (3321), 575 states have call successors, (575), 313 states have call predecessors, (575), 313 states have return successors, (575), 551 states have call predecessors, (575), 575 states have call successors, (575) [2023-11-26 10:48:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 4471 transitions. [2023-11-26 10:48:01,788 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 4471 transitions. Word has length 141 [2023-11-26 10:48:01,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:01,789 INFO L495 AbstractCegarLoop]: Abstraction has 3420 states and 4471 transitions. [2023-11-26 10:48:01,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 12 states have internal predecessors, (176), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2023-11-26 10:48:01,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 4471 transitions. [2023-11-26 10:48:01,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-26 10:48:01,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:01,798 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-11-26 10:48:01,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:02,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:02,006 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:02,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:02,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1706195320, now seen corresponding path program 1 times [2023-11-26 10:48:02,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:02,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494471775] [2023-11-26 10:48:02,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:02,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:48:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:48:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 10:48:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 10:48:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 10:48:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:48:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 10:48:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 10:48:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 10:48:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 10:48:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 10:48:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-26 10:48:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-26 10:48:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-26 10:48:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-26 10:48:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-26 10:48:02,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:02,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494471775] [2023-11-26 10:48:02,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494471775] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:02,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169451477] [2023-11-26 10:48:02,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:02,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:02,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:02,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:02,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04c3aca1-f6df-4a0e-8369-acc691029e8a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:48:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:02,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:48:02,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 10:48:03,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-26 10:48:03,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169451477] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:03,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:03,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-11-26 10:48:03,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843079500] [2023-11-26 10:48:03,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:03,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 10:48:03,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:03,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 10:48:03,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:48:03,440 INFO L87 Difference]: Start difference. First operand 3420 states and 4471 transitions. Second operand has 16 states, 16 states have (on average 11.5) internal successors, (184), 14 states have internal predecessors, (184), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2023-11-26 10:48:12,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:12,288 INFO L93 Difference]: Finished difference Result 13984 states and 18811 transitions. [2023-11-26 10:48:12,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-11-26 10:48:12,288 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 14 states have internal predecessors, (184), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) Word has length 150 [2023-11-26 10:48:12,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted.