/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:43:00,574 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:43:00,643 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:43:00,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:43:00,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:43:00,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:43:00,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:43:00,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:43:00,676 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:43:00,676 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:43:00,677 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:43:00,677 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:43:00,677 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:43:00,678 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:43:00,678 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:43:00,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:43:00,679 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:43:00,679 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:43:00,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:43:00,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:43:00,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:43:00,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:43:00,681 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:43:00,681 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:43:00,681 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:43:00,681 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:43:00,682 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:43:00,682 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:43:00,682 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:43:00,682 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:43:00,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:43:00,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:43:00,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:43:00,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:43:00,684 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:43:00,684 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:43:00,684 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:43:00,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:43:00,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:43:00,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:43:00,685 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:43:00,685 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:43:00,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:43:00,686 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:43:00,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:43:00,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:43:00,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:43:00,889 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:43:00,899 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:43:00,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c [2023-12-19 01:43:02,103 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:43:02,373 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:43:02,373 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c [2023-12-19 01:43:02,390 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d76b2a034/85a127273f9d44cfbba7a04c5fccabbf/FLAG9e00dbaea [2023-12-19 01:43:02,402 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d76b2a034/85a127273f9d44cfbba7a04c5fccabbf [2023-12-19 01:43:02,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:43:02,405 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:43:02,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:43:02,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:43:02,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:43:02,412 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:43:02" (1/1) ... [2023-12-19 01:43:02,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3492a370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02, skipping insertion in model container [2023-12-19 01:43:02,413 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:43:02" (1/1) ... [2023-12-19 01:43:02,476 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:43:02,608 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c[911,924] [2023-12-19 01:43:02,659 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c[8416,8429] [2023-12-19 01:43:02,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:43:02,744 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:43:02,761 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c[911,924] [2023-12-19 01:43:02,801 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c[8416,8429] [2023-12-19 01:43:02,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:43:02,880 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:43:02,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02 WrapperNode [2023-12-19 01:43:02,881 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:43:02,890 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:43:02,890 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:43:02,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:43:02,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02" (1/1) ... [2023-12-19 01:43:02,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02" (1/1) ... [2023-12-19 01:43:02,967 INFO L138 Inliner]: procedures = 79, calls = 97, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 1106 [2023-12-19 01:43:02,967 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:43:02,968 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:43:02,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:43:02,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:43:02,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02" (1/1) ... [2023-12-19 01:43:02,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02" (1/1) ... [2023-12-19 01:43:02,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02" (1/1) ... [2023-12-19 01:43:03,016 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]. [2023-12-19 01:43:03,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02" (1/1) ... [2023-12-19 01:43:03,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02" (1/1) ... [2023-12-19 01:43:03,035 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02" (1/1) ... [2023-12-19 01:43:03,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02" (1/1) ... [2023-12-19 01:43:03,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02" (1/1) ... [2023-12-19 01:43:03,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02" (1/1) ... [2023-12-19 01:43:03,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:43:03,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:43:03,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:43:03,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:43:03,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02" (1/1) ... [2023-12-19 01:43:03,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:43:03,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:43:03,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 01:43:03,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:43:03,154 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-19 01:43:03,154 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-19 01:43:03,154 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-19 01:43:03,155 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-19 01:43:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-19 01:43:03,155 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-19 01:43:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-19 01:43:03,155 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-19 01:43:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-19 01:43:03,155 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-19 01:43:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-19 01:43:03,155 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-19 01:43:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-19 01:43:03,155 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-19 01:43:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-19 01:43:03,156 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-19 01:43:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-19 01:43:03,156 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-19 01:43:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-19 01:43:03,156 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-19 01:43:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-19 01:43:03,156 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-19 01:43:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:43:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-19 01:43:03,156 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-19 01:43:03,157 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-19 01:43:03,157 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-19 01:43:03,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:43:03,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:43:03,157 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-19 01:43:03,182 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-19 01:43:03,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 01:43:03,289 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:43:03,291 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:43:03,943 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-12-19 01:43:03,945 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2023-12-19 01:43:04,022 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:43:04,097 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:43:04,097 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-12-19 01:43:04,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:43:04 BoogieIcfgContainer [2023-12-19 01:43:04,098 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:43:04,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:43:04,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:43:04,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:43:04,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:43:02" (1/3) ... [2023-12-19 01:43:04,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6ea155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:43:04, skipping insertion in model container [2023-12-19 01:43:04,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:02" (2/3) ... [2023-12-19 01:43:04,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6ea155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:43:04, skipping insertion in model container [2023-12-19 01:43:04,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:43:04" (3/3) ... [2023-12-19 01:43:04,106 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.12.cil-2.c [2023-12-19 01:43:04,120 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:43:04,120 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:43:04,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:43:04,172 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;@2004c3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:43:04,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:43:04,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 452 states, 393 states have (on average 1.7150127226463103) internal successors, (674), 399 states have internal predecessors, (674), 42 states have call successors, (42), 14 states have call predecessors, (42), 14 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 01:43:04,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:43:04,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:04,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:04,191 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:04,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:04,201 INFO L85 PathProgramCache]: Analyzing trace with hash -427732413, now seen corresponding path program 1 times [2023-12-19 01:43:04,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:04,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412368985] [2023-12-19 01:43:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:04,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:04,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:04,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:04,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:04,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:43:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:04,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:43:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:04,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:43:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:04,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:04,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412368985] [2023-12-19 01:43:04,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412368985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:04,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:04,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:43:04,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181769021] [2023-12-19 01:43:04,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:04,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:43:04,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:04,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:43:04,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:43:04,673 INFO L87 Difference]: Start difference. First operand has 452 states, 393 states have (on average 1.7150127226463103) internal successors, (674), 399 states have internal predecessors, (674), 42 states have call successors, (42), 14 states have call predecessors, (42), 14 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:43:05,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:05,595 INFO L93 Difference]: Finished difference Result 897 states and 1499 transitions. [2023-12-19 01:43:05,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:43:05,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2023-12-19 01:43:05,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:05,608 INFO L225 Difference]: With dead ends: 897 [2023-12-19 01:43:05,608 INFO L226 Difference]: Without dead ends: 464 [2023-12-19 01:43:05,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:43:05,616 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1053 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:05,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 1181 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:43:05,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-12-19 01:43:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 447. [2023-12-19 01:43:05,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 390 states have (on average 1.6102564102564103) internal successors, (628), 394 states have internal predecessors, (628), 42 states have call successors, (42), 14 states have call predecessors, (42), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-19 01:43:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 710 transitions. [2023-12-19 01:43:05,673 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 710 transitions. Word has length 57 [2023-12-19 01:43:05,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:05,673 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 710 transitions. [2023-12-19 01:43:05,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:43:05,674 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 710 transitions. [2023-12-19 01:43:05,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:43:05,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:05,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:05,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:43:05,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:05,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:05,677 INFO L85 PathProgramCache]: Analyzing trace with hash -412213695, now seen corresponding path program 1 times [2023-12-19 01:43:05,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:05,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730168587] [2023-12-19 01:43:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:05,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:05,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:05,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:05,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:05,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:43:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:05,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:43:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:05,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:43:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:05,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:05,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730168587] [2023-12-19 01:43:05,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730168587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:05,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:05,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:43:05,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992402735] [2023-12-19 01:43:05,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:05,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:43:05,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:43:05,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:43:05,819 INFO L87 Difference]: Start difference. First operand 447 states and 710 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:43:06,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:06,814 INFO L93 Difference]: Finished difference Result 679 states and 1056 transitions. [2023-12-19 01:43:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:43:06,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2023-12-19 01:43:06,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:06,819 INFO L225 Difference]: With dead ends: 679 [2023-12-19 01:43:06,819 INFO L226 Difference]: Without dead ends: 585 [2023-12-19 01:43:06,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:43:06,820 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 1203 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:06,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 1524 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:43:06,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-12-19 01:43:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 548. [2023-12-19 01:43:06,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 469 states have (on average 1.584221748400853) internal successors, (743), 475 states have internal predecessors, (743), 55 states have call successors, (55), 21 states have call predecessors, (55), 22 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-19 01:43:06,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 856 transitions. [2023-12-19 01:43:06,866 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 856 transitions. Word has length 57 [2023-12-19 01:43:06,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:06,866 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 856 transitions. [2023-12-19 01:43:06,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:43:06,866 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 856 transitions. [2023-12-19 01:43:06,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:43:06,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:06,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:06,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:43:06,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:06,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:06,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1938760833, now seen corresponding path program 1 times [2023-12-19 01:43:06,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:06,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025598748] [2023-12-19 01:43:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:06,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:06,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:06,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:06,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:06,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:43:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:06,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:43:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:06,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:43:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:06,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:06,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:06,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025598748] [2023-12-19 01:43:06,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025598748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:06,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:06,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:43:06,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053199788] [2023-12-19 01:43:06,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:06,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:43:06,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:06,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:43:06,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:43:06,992 INFO L87 Difference]: Start difference. First operand 548 states and 856 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:43:08,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:08,080 INFO L93 Difference]: Finished difference Result 909 states and 1385 transitions. [2023-12-19 01:43:08,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 01:43:08,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2023-12-19 01:43:08,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:08,084 INFO L225 Difference]: With dead ends: 909 [2023-12-19 01:43:08,084 INFO L226 Difference]: Without dead ends: 721 [2023-12-19 01:43:08,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-19 01:43:08,086 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1718 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:08,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1751 Valid, 1780 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:43:08,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2023-12-19 01:43:08,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 649. [2023-12-19 01:43:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 548 states have (on average 1.563868613138686) internal successors, (857), 556 states have internal predecessors, (857), 68 states have call successors, (68), 28 states have call predecessors, (68), 31 states have return successors, (79), 68 states have call predecessors, (79), 66 states have call successors, (79) [2023-12-19 01:43:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1004 transitions. [2023-12-19 01:43:08,178 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1004 transitions. Word has length 57 [2023-12-19 01:43:08,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:08,179 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 1004 transitions. [2023-12-19 01:43:08,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:43:08,179 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1004 transitions. [2023-12-19 01:43:08,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:43:08,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:08,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:08,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:43:08,183 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:08,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:08,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1462720125, now seen corresponding path program 1 times [2023-12-19 01:43:08,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:08,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647277740] [2023-12-19 01:43:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:08,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:08,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:08,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:08,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:08,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:08,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:43:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:08,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:43:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:08,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:43:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:08,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:08,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647277740] [2023-12-19 01:43:08,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647277740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:08,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:08,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:43:08,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473614849] [2023-12-19 01:43:08,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:08,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:43:08,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:08,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:43:08,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:43:08,379 INFO L87 Difference]: Start difference. First operand 649 states and 1004 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-19 01:43:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:09,979 INFO L93 Difference]: Finished difference Result 2047 states and 3053 transitions. [2023-12-19 01:43:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 01:43:09,980 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 57 [2023-12-19 01:43:09,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:09,989 INFO L225 Difference]: With dead ends: 2047 [2023-12-19 01:43:09,990 INFO L226 Difference]: Without dead ends: 1746 [2023-12-19 01:43:09,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 01:43:09,998 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 4065 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:09,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4083 Valid, 2006 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:43:10,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2023-12-19 01:43:10,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1613. [2023-12-19 01:43:10,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1307 states have (on average 1.4644223412394797) internal successors, (1914), 1330 states have internal predecessors, (1914), 178 states have call successors, (178), 111 states have call predecessors, (178), 126 states have return successors, (212), 174 states have call predecessors, (212), 176 states have call successors, (212) [2023-12-19 01:43:10,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2304 transitions. [2023-12-19 01:43:10,119 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2304 transitions. Word has length 57 [2023-12-19 01:43:10,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:10,120 INFO L495 AbstractCegarLoop]: Abstraction has 1613 states and 2304 transitions. [2023-12-19 01:43:10,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-19 01:43:10,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2304 transitions. [2023-12-19 01:43:10,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:43:10,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:10,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:10,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:43:10,121 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:10,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1271838702, now seen corresponding path program 1 times [2023-12-19 01:43:10,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:10,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951019382] [2023-12-19 01:43:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:10,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:10,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:10,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:10,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:10,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:10,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 01:43:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:10,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:43:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:10,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:10,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951019382] [2023-12-19 01:43:10,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951019382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:10,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:10,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:43:10,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609693471] [2023-12-19 01:43:10,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:10,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:43:10,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:10,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:43:10,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:43:10,285 INFO L87 Difference]: Start difference. First operand 1613 states and 2304 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:43:11,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:11,316 INFO L93 Difference]: Finished difference Result 3010 states and 4252 transitions. [2023-12-19 01:43:11,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:43:11,317 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-19 01:43:11,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:11,324 INFO L225 Difference]: With dead ends: 3010 [2023-12-19 01:43:11,325 INFO L226 Difference]: Without dead ends: 1751 [2023-12-19 01:43:11,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:43:11,329 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 634 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 2319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:11,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 2490 Invalid, 2319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2226 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:43:11,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2023-12-19 01:43:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1645. [2023-12-19 01:43:11,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1331 states have (on average 1.4515401953418483) internal successors, (1932), 1354 states have internal predecessors, (1932), 178 states have call successors, (178), 111 states have call predecessors, (178), 134 states have return successors, (220), 182 states have call predecessors, (220), 176 states have call successors, (220) [2023-12-19 01:43:11,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2330 transitions. [2023-12-19 01:43:11,410 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2330 transitions. Word has length 58 [2023-12-19 01:43:11,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:11,410 INFO L495 AbstractCegarLoop]: Abstraction has 1645 states and 2330 transitions. [2023-12-19 01:43:11,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:43:11,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2330 transitions. [2023-12-19 01:43:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:43:11,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:11,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:11,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:43:11,411 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:11,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:11,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1199452144, now seen corresponding path program 1 times [2023-12-19 01:43:11,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:11,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928738721] [2023-12-19 01:43:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:11,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:11,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:11,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:11,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:11,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 01:43:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:43:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:11,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:11,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928738721] [2023-12-19 01:43:11,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928738721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:11,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:11,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:43:11,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330375730] [2023-12-19 01:43:11,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:11,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:43:11,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:11,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:43:11,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:43:11,520 INFO L87 Difference]: Start difference. First operand 1645 states and 2330 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-19 01:43:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:13,100 INFO L93 Difference]: Finished difference Result 4904 states and 6891 transitions. [2023-12-19 01:43:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 01:43:13,100 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-12-19 01:43:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:13,112 INFO L225 Difference]: With dead ends: 4904 [2023-12-19 01:43:13,113 INFO L226 Difference]: Without dead ends: 2015 [2023-12-19 01:43:13,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 01:43:13,121 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 3713 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3731 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:13,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3731 Valid, 2424 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:43:13,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2023-12-19 01:43:13,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1859. [2023-12-19 01:43:13,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1473 states have (on average 1.3991853360488797) internal successors, (2061), 1498 states have internal predecessors, (2061), 218 states have call successors, (218), 139 states have call predecessors, (218), 166 states have return successors, (266), 224 states have call predecessors, (266), 216 states have call successors, (266) [2023-12-19 01:43:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2545 transitions. [2023-12-19 01:43:13,251 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2545 transitions. Word has length 58 [2023-12-19 01:43:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:13,251 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2545 transitions. [2023-12-19 01:43:13,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-19 01:43:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2545 transitions. [2023-12-19 01:43:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 01:43:13,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:13,253 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:43:13,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:43:13,253 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:13,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:13,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2110301578, now seen corresponding path program 1 times [2023-12-19 01:43:13,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:13,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176611344] [2023-12-19 01:43:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:13,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:13,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:13,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:13,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:13,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:13,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:43:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:13,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:43:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:13,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:43:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:43:13,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:13,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176611344] [2023-12-19 01:43:13,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176611344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:13,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:13,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:43:13,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539024994] [2023-12-19 01:43:13,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:13,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:43:13,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:13,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:43:13,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:43:13,365 INFO L87 Difference]: Start difference. First operand 1859 states and 2545 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:43:14,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:14,400 INFO L93 Difference]: Finished difference Result 3544 states and 4807 transitions. [2023-12-19 01:43:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:43:14,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2023-12-19 01:43:14,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:14,407 INFO L225 Difference]: With dead ends: 3544 [2023-12-19 01:43:14,408 INFO L226 Difference]: Without dead ends: 2039 [2023-12-19 01:43:14,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:43:14,411 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 630 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:14,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 2457 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:43:14,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2023-12-19 01:43:14,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1907. [2023-12-19 01:43:14,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1509 states have (on average 1.385685884691849) internal successors, (2091), 1534 states have internal predecessors, (2091), 218 states have call successors, (218), 139 states have call predecessors, (218), 178 states have return successors, (278), 236 states have call predecessors, (278), 216 states have call successors, (278) [2023-12-19 01:43:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2587 transitions. [2023-12-19 01:43:14,486 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2587 transitions. Word has length 80 [2023-12-19 01:43:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:14,486 INFO L495 AbstractCegarLoop]: Abstraction has 1907 states and 2587 transitions. [2023-12-19 01:43:14,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:43:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2587 transitions. [2023-12-19 01:43:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 01:43:14,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:14,488 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:43:14,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:43:14,488 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:14,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:14,488 INFO L85 PathProgramCache]: Analyzing trace with hash -256393016, now seen corresponding path program 1 times [2023-12-19 01:43:14,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:14,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173644992] [2023-12-19 01:43:14,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:14,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:14,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:14,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:14,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:14,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:14,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:14,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:43:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:14,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:43:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:14,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:43:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:43:14,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:14,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173644992] [2023-12-19 01:43:14,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173644992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:14,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:14,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:43:14,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333615769] [2023-12-19 01:43:14,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:14,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:43:14,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:14,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:43:14,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:43:14,634 INFO L87 Difference]: Start difference. First operand 1907 states and 2587 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:43:15,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:15,632 INFO L93 Difference]: Finished difference Result 3306 states and 4423 transitions. [2023-12-19 01:43:15,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 01:43:15,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-12-19 01:43:15,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:15,642 INFO L225 Difference]: With dead ends: 3306 [2023-12-19 01:43:15,643 INFO L226 Difference]: Without dead ends: 1974 [2023-12-19 01:43:15,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-19 01:43:15,648 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1717 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:15,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1751 Valid, 1576 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:43:15,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2023-12-19 01:43:15,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1699. [2023-12-19 01:43:15,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1354 states have (on average 1.3929098966026587) internal successors, (1886), 1374 states have internal predecessors, (1886), 190 states have call successors, (190), 120 states have call predecessors, (190), 153 states have return successors, (238), 206 states have call predecessors, (238), 188 states have call successors, (238) [2023-12-19 01:43:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2314 transitions. [2023-12-19 01:43:15,726 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2314 transitions. Word has length 80 [2023-12-19 01:43:15,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:15,728 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2314 transitions. [2023-12-19 01:43:15,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:43:15,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2314 transitions. [2023-12-19 01:43:15,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 01:43:15,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:15,733 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:43:15,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:43:15,733 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:15,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:15,733 INFO L85 PathProgramCache]: Analyzing trace with hash 167253706, now seen corresponding path program 1 times [2023-12-19 01:43:15,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:15,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830287129] [2023-12-19 01:43:15,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:15,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:15,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:15,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:15,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:15,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:15,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:43:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:15,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:43:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:15,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:43:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:43:15,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:15,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830287129] [2023-12-19 01:43:15,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830287129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:15,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:15,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:15,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946637119] [2023-12-19 01:43:15,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:15,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:15,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:15,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:15,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:15,826 INFO L87 Difference]: Start difference. First operand 1699 states and 2314 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-19 01:43:16,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:16,567 INFO L93 Difference]: Finished difference Result 3148 states and 4243 transitions. [2023-12-19 01:43:16,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:43:16,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2023-12-19 01:43:16,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:16,575 INFO L225 Difference]: With dead ends: 3148 [2023-12-19 01:43:16,575 INFO L226 Difference]: Without dead ends: 1804 [2023-12-19 01:43:16,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-12-19 01:43:16,579 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1255 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:16,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 1419 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:43:16,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2023-12-19 01:43:16,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1699. [2023-12-19 01:43:16,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1354 states have (on average 1.3663220088626293) internal successors, (1850), 1374 states have internal predecessors, (1850), 190 states have call successors, (190), 120 states have call predecessors, (190), 153 states have return successors, (238), 206 states have call predecessors, (238), 188 states have call successors, (238) [2023-12-19 01:43:16,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2278 transitions. [2023-12-19 01:43:16,647 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2278 transitions. Word has length 80 [2023-12-19 01:43:16,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:16,648 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2278 transitions. [2023-12-19 01:43:16,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-19 01:43:16,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2278 transitions. [2023-12-19 01:43:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:43:16,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:16,649 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:43:16,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:43:16,649 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:16,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:16,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1967164953, now seen corresponding path program 1 times [2023-12-19 01:43:16,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:16,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482152855] [2023-12-19 01:43:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:16,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:16,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:16,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:16,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:16,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:16,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:16,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:43:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:16,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:43:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:16,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 01:43:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:43:16,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:16,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482152855] [2023-12-19 01:43:16,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482152855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:16,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:16,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:43:16,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788647654] [2023-12-19 01:43:16,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:16,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:43:16,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:16,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:43:16,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:43:16,758 INFO L87 Difference]: Start difference. First operand 1699 states and 2278 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 01:43:18,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:18,175 INFO L93 Difference]: Finished difference Result 3920 states and 5164 transitions. [2023-12-19 01:43:18,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 01:43:18,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2023-12-19 01:43:18,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:18,186 INFO L225 Difference]: With dead ends: 3920 [2023-12-19 01:43:18,186 INFO L226 Difference]: Without dead ends: 2435 [2023-12-19 01:43:18,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2023-12-19 01:43:18,190 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 2380 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:18,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 1924 Invalid, 2297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:43:18,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2023-12-19 01:43:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 2271. [2023-12-19 01:43:18,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 1772 states have (on average 1.322234762979684) internal successors, (2343), 1800 states have internal predecessors, (2343), 267 states have call successors, (267), 168 states have call predecessors, (267), 230 states have return successors, (369), 304 states have call predecessors, (369), 265 states have call successors, (369) [2023-12-19 01:43:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 2979 transitions. [2023-12-19 01:43:18,294 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 2979 transitions. Word has length 81 [2023-12-19 01:43:18,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:18,294 INFO L495 AbstractCegarLoop]: Abstraction has 2271 states and 2979 transitions. [2023-12-19 01:43:18,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 01:43:18,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 2979 transitions. [2023-12-19 01:43:18,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 01:43:18,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:18,296 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 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, 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] [2023-12-19 01:43:18,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:43:18,296 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:18,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:18,297 INFO L85 PathProgramCache]: Analyzing trace with hash -985991477, now seen corresponding path program 1 times [2023-12-19 01:43:18,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:18,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701825301] [2023-12-19 01:43:18,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:18,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:43:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:43:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 01:43:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:43:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 01:43:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:43:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:43:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 01:43:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 01:43:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 01:43:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 01:43:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,470 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-19 01:43:18,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:18,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701825301] [2023-12-19 01:43:18,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701825301] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:43:18,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554888264] [2023-12-19 01:43:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:18,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:43:18,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:43:18,485 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:43:18,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:43:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:18,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:43:18,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:43:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 01:43:18,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:43:18,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554888264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:18,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:43:18,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-19 01:43:18,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820332909] [2023-12-19 01:43:18,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:18,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:43:18,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:18,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:43:18,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:43:18,745 INFO L87 Difference]: Start difference. First operand 2271 states and 2979 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 01:43:18,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:18,929 INFO L93 Difference]: Finished difference Result 5867 states and 7478 transitions. [2023-12-19 01:43:18,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:43:18,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-12-19 01:43:18,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:18,944 INFO L225 Difference]: With dead ends: 5867 [2023-12-19 01:43:18,944 INFO L226 Difference]: Without dead ends: 4021 [2023-12-19 01:43:18,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:43:18,950 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 57 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:18,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1311 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:43:18,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2023-12-19 01:43:19,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 3981. [2023-12-19 01:43:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3981 states, 3069 states have (on average 1.2828282828282829) internal successors, (3937), 3120 states have internal predecessors, (3937), 474 states have call successors, (474), 329 states have call predecessors, (474), 436 states have return successors, (637), 533 states have call predecessors, (637), 472 states have call successors, (637) [2023-12-19 01:43:19,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 5048 transitions. [2023-12-19 01:43:19,184 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 5048 transitions. Word has length 145 [2023-12-19 01:43:19,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:19,185 INFO L495 AbstractCegarLoop]: Abstraction has 3981 states and 5048 transitions. [2023-12-19 01:43:19,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 01:43:19,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 5048 transitions. [2023-12-19 01:43:19,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 01:43:19,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:19,189 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:19,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 01:43:19,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 01:43:19,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:19,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:19,399 INFO L85 PathProgramCache]: Analyzing trace with hash 526209918, now seen corresponding path program 1 times [2023-12-19 01:43:19,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:19,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652208751] [2023-12-19 01:43:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:19,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:43:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:43:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 01:43:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:43:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 01:43:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:43:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 01:43:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:43:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 01:43:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 01:43:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:43:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-19 01:43:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-19 01:43:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-19 01:43:19,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:19,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652208751] [2023-12-19 01:43:19,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652208751] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:43:19,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123245247] [2023-12-19 01:43:19,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:19,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:43:19,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:43:19,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:43:19,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:43:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:19,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:43:19,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:43:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-19 01:43:19,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:43:19,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123245247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:19,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:43:19,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-19 01:43:19,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751159123] [2023-12-19 01:43:19,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:19,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:43:19,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:43:19,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:43:19,871 INFO L87 Difference]: Start difference. First operand 3981 states and 5048 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-19 01:43:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:20,196 INFO L93 Difference]: Finished difference Result 11233 states and 13988 transitions. [2023-12-19 01:43:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:43:20,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 175 [2023-12-19 01:43:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:20,222 INFO L225 Difference]: With dead ends: 11233 [2023-12-19 01:43:20,222 INFO L226 Difference]: Without dead ends: 7607 [2023-12-19 01:43:20,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:43:20,232 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 48 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:20,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1280 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:43:20,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7607 states. [2023-12-19 01:43:20,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7607 to 7599. [2023-12-19 01:43:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7599 states, 5815 states have (on average 1.2564058469475494) internal successors, (7306), 5913 states have internal predecessors, (7306), 916 states have call successors, (916), 651 states have call predecessors, (916), 866 states have return successors, (1244), 1036 states have call predecessors, (1244), 914 states have call successors, (1244) [2023-12-19 01:43:20,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7599 states to 7599 states and 9466 transitions. [2023-12-19 01:43:20,614 INFO L78 Accepts]: Start accepts. Automaton has 7599 states and 9466 transitions. Word has length 175 [2023-12-19 01:43:20,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:20,614 INFO L495 AbstractCegarLoop]: Abstraction has 7599 states and 9466 transitions. [2023-12-19 01:43:20,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-19 01:43:20,614 INFO L276 IsEmpty]: Start isEmpty. Operand 7599 states and 9466 transitions. [2023-12-19 01:43:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 01:43:20,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:20,617 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:20,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 01:43:20,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 01:43:20,824 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:20,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:20,825 INFO L85 PathProgramCache]: Analyzing trace with hash 131843132, now seen corresponding path program 1 times [2023-12-19 01:43:20,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:20,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798295485] [2023-12-19 01:43:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:20,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:43:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:43:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 01:43:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:43:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 01:43:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:43:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 01:43:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:43:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 01:43:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 01:43:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:43:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-19 01:43:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-19 01:43:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-19 01:43:20,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:20,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798295485] [2023-12-19 01:43:20,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798295485] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:43:20,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052691162] [2023-12-19 01:43:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:20,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:43:20,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:43:20,979 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:43:21,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:43:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:21,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:43:21,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:43:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-19 01:43:21,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:43:21,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052691162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:21,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:43:21,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-19 01:43:21,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279979656] [2023-12-19 01:43:21,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:21,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:43:21,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:21,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:43:21,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:43:21,284 INFO L87 Difference]: Start difference. First operand 7599 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 01:43:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:21,682 INFO L93 Difference]: Finished difference Result 13585 states and 17138 transitions. [2023-12-19 01:43:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:43:21,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 175 [2023-12-19 01:43:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:21,685 INFO L225 Difference]: With dead ends: 13585 [2023-12-19 01:43:21,685 INFO L226 Difference]: Without dead ends: 347 [2023-12-19 01:43:21,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:43:21,705 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 588 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:21,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 633 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:43:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-19 01:43:21,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-12-19 01:43:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 314 states have (on average 1.6337579617834395) internal successors, (513), 315 states have internal predecessors, (513), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 01:43:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 565 transitions. [2023-12-19 01:43:21,716 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 565 transitions. Word has length 175 [2023-12-19 01:43:21,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:21,716 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 565 transitions. [2023-12-19 01:43:21,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 01:43:21,716 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 565 transitions. [2023-12-19 01:43:21,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:43:21,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:21,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:21,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:43:21,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:43:21,925 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:21,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1462659871, now seen corresponding path program 1 times [2023-12-19 01:43:21,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:21,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367338154] [2023-12-19 01:43:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:21,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:21,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:22,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:22,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:22,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:22,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:22,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367338154] [2023-12-19 01:43:22,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367338154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:22,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:22,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:43:22,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460781264] [2023-12-19 01:43:22,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:22,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:43:22,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:22,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:43:22,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:43:22,081 INFO L87 Difference]: Start difference. First operand 347 states and 565 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:23,578 INFO L93 Difference]: Finished difference Result 819 states and 1356 transitions. [2023-12-19 01:43:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 01:43:23,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-19 01:43:23,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:23,605 INFO L225 Difference]: With dead ends: 819 [2023-12-19 01:43:23,605 INFO L226 Difference]: Without dead ends: 477 [2023-12-19 01:43:23,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:43:23,606 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 977 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:23,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 622 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:43:23,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-12-19 01:43:23,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 347. [2023-12-19 01:43:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 314 states have (on average 1.6305732484076434) internal successors, (512), 315 states have internal predecessors, (512), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 01:43:23,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 564 transitions. [2023-12-19 01:43:23,635 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 564 transitions. Word has length 161 [2023-12-19 01:43:23,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:23,636 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 564 transitions. [2023-12-19 01:43:23,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:23,636 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 564 transitions. [2023-12-19 01:43:23,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:43:23,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:23,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:23,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:43:23,638 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:23,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:23,638 INFO L85 PathProgramCache]: Analyzing trace with hash 306811743, now seen corresponding path program 1 times [2023-12-19 01:43:23,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:23,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776631976] [2023-12-19 01:43:23,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:23,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:23,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:23,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:23,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:23,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:23,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:23,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:23,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776631976] [2023-12-19 01:43:23,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776631976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:23,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:23,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:23,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245632844] [2023-12-19 01:43:23,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:23,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:23,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:23,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:23,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:23,808 INFO L87 Difference]: Start difference. First operand 347 states and 564 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:25,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:25,778 INFO L93 Difference]: Finished difference Result 877 states and 1457 transitions. [2023-12-19 01:43:25,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:43:25,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-19 01:43:25,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:25,781 INFO L225 Difference]: With dead ends: 877 [2023-12-19 01:43:25,781 INFO L226 Difference]: Without dead ends: 543 [2023-12-19 01:43:25,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-19 01:43:25,782 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1248 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:25,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 1122 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:43:25,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-12-19 01:43:25,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 349. [2023-12-19 01:43:25,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 316 states have (on average 1.6234177215189873) internal successors, (513), 317 states have internal predecessors, (513), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 01:43:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 565 transitions. [2023-12-19 01:43:25,794 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 565 transitions. Word has length 161 [2023-12-19 01:43:25,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:25,795 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 565 transitions. [2023-12-19 01:43:25,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 565 transitions. [2023-12-19 01:43:25,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:43:25,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:25,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:25,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:43:25,802 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:25,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:25,803 INFO L85 PathProgramCache]: Analyzing trace with hash -23242785, now seen corresponding path program 1 times [2023-12-19 01:43:25,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:25,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554894720] [2023-12-19 01:43:25,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:25,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:25,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:25,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:25,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:25,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:26,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:26,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:26,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554894720] [2023-12-19 01:43:26,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554894720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:26,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:26,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:43:26,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160879302] [2023-12-19 01:43:26,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:26,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:43:26,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:43:26,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:43:26,006 INFO L87 Difference]: Start difference. First operand 349 states and 565 transitions. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:29,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:29,256 INFO L93 Difference]: Finished difference Result 1364 states and 2281 transitions. [2023-12-19 01:43:29,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 01:43:29,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-19 01:43:29,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:29,259 INFO L225 Difference]: With dead ends: 1364 [2023-12-19 01:43:29,259 INFO L226 Difference]: Without dead ends: 1034 [2023-12-19 01:43:29,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-12-19 01:43:29,261 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 1724 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 3426 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 3539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 3426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:29,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 1560 Invalid, 3539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 3426 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 01:43:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-19 01:43:29,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 703. [2023-12-19 01:43:29,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 642 states have (on average 1.6308411214953271) internal successors, (1047), 644 states have internal predecessors, (1047), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-12-19 01:43:29,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1144 transitions. [2023-12-19 01:43:29,283 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1144 transitions. Word has length 161 [2023-12-19 01:43:29,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:29,283 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1144 transitions. [2023-12-19 01:43:29,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:29,284 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1144 transitions. [2023-12-19 01:43:29,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:43:29,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:29,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:29,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:43:29,285 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:29,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:29,285 INFO L85 PathProgramCache]: Analyzing trace with hash -433124899, now seen corresponding path program 1 times [2023-12-19 01:43:29,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:29,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276509488] [2023-12-19 01:43:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:29,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:29,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:29,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276509488] [2023-12-19 01:43:29,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276509488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:29,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:29,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:43:29,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069125669] [2023-12-19 01:43:29,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:29,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:43:29,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:29,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:43:29,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:43:29,499 INFO L87 Difference]: Start difference. First operand 703 states and 1144 transitions. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:34,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:34,104 INFO L93 Difference]: Finished difference Result 2233 states and 3730 transitions. [2023-12-19 01:43:34,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 01:43:34,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-19 01:43:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:34,111 INFO L225 Difference]: With dead ends: 2233 [2023-12-19 01:43:34,111 INFO L226 Difference]: Without dead ends: 1549 [2023-12-19 01:43:34,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2023-12-19 01:43:34,116 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1677 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 5256 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 5322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 5256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:34,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1698 Valid, 2830 Invalid, 5322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 5256 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 01:43:34,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2023-12-19 01:43:34,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1035. [2023-12-19 01:43:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 946 states have (on average 1.620507399577167) internal successors, (1533), 949 states have internal predecessors, (1533), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2023-12-19 01:43:34,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1674 transitions. [2023-12-19 01:43:34,157 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1674 transitions. Word has length 161 [2023-12-19 01:43:34,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:34,157 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1674 transitions. [2023-12-19 01:43:34,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:34,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1674 transitions. [2023-12-19 01:43:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:43:34,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:34,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:34,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:43:34,159 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:34,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:34,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1889735847, now seen corresponding path program 1 times [2023-12-19 01:43:34,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:34,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261778972] [2023-12-19 01:43:34,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:34,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:34,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:34,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:34,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:34,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:34,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:34,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261778972] [2023-12-19 01:43:34,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261778972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:34,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:34,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:34,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467861210] [2023-12-19 01:43:34,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:34,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:34,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:34,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:34,354 INFO L87 Difference]: Start difference. First operand 1035 states and 1674 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:37,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:37,105 INFO L93 Difference]: Finished difference Result 3446 states and 5667 transitions. [2023-12-19 01:43:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:43:37,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-19 01:43:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:37,139 INFO L225 Difference]: With dead ends: 3446 [2023-12-19 01:43:37,139 INFO L226 Difference]: Without dead ends: 2430 [2023-12-19 01:43:37,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:43:37,158 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1520 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3699 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:37,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 1990 Invalid, 3763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3699 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 01:43:37,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2023-12-19 01:43:37,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1694. [2023-12-19 01:43:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1549 states have (on average 1.6152356358941253) internal successors, (2502), 1554 states have internal predecessors, (2502), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-19 01:43:37,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2735 transitions. [2023-12-19 01:43:37,270 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2735 transitions. Word has length 161 [2023-12-19 01:43:37,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:37,271 INFO L495 AbstractCegarLoop]: Abstraction has 1694 states and 2735 transitions. [2023-12-19 01:43:37,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2735 transitions. [2023-12-19 01:43:37,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:43:37,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:37,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:37,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:43:37,273 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:37,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1820087973, now seen corresponding path program 1 times [2023-12-19 01:43:37,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:37,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929903933] [2023-12-19 01:43:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:37,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:37,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:37,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:37,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:37,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:37,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929903933] [2023-12-19 01:43:37,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929903933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:37,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:37,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:37,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042315020] [2023-12-19 01:43:37,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:37,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:37,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:37,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:37,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:37,484 INFO L87 Difference]: Start difference. First operand 1694 states and 2735 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:40,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:40,813 INFO L93 Difference]: Finished difference Result 5887 states and 9644 transitions. [2023-12-19 01:43:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:43:40,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-19 01:43:40,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:40,833 INFO L225 Difference]: With dead ends: 5887 [2023-12-19 01:43:40,833 INFO L226 Difference]: Without dead ends: 4212 [2023-12-19 01:43:40,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:43:40,839 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1519 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3686 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:40,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 1990 Invalid, 3750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3686 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 01:43:40,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2023-12-19 01:43:40,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 3015. [2023-12-19 01:43:40,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2758 states have (on average 1.6113125453226975) internal successors, (4444), 2767 states have internal predecessors, (4444), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-19 01:43:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 4867 transitions. [2023-12-19 01:43:40,959 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 4867 transitions. Word has length 161 [2023-12-19 01:43:40,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:40,959 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 4867 transitions. [2023-12-19 01:43:40,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:40,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 4867 transitions. [2023-12-19 01:43:40,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:43:40,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:40,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:40,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:43:40,962 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:40,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:40,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1402199271, now seen corresponding path program 1 times [2023-12-19 01:43:40,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:40,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765799113] [2023-12-19 01:43:40,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:40,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:41,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:41,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765799113] [2023-12-19 01:43:41,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765799113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:41,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:41,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:41,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429031033] [2023-12-19 01:43:41,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:41,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:41,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:41,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:41,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:41,168 INFO L87 Difference]: Start difference. First operand 3015 states and 4867 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:44,275 INFO L93 Difference]: Finished difference Result 10770 states and 17618 transitions. [2023-12-19 01:43:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:43:44,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-19 01:43:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:44,298 INFO L225 Difference]: With dead ends: 10770 [2023-12-19 01:43:44,298 INFO L226 Difference]: Without dead ends: 7774 [2023-12-19 01:43:44,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:43:44,309 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1518 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3673 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:44,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1990 Invalid, 3737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3673 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 01:43:44,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7774 states. [2023-12-19 01:43:44,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7774 to 5664. [2023-12-19 01:43:44,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5664 states, 5183 states have (on average 1.608720818059039) internal successors, (8338), 5200 states have internal predecessors, (8338), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2023-12-19 01:43:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 9159 transitions. [2023-12-19 01:43:44,589 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 9159 transitions. Word has length 161 [2023-12-19 01:43:44,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:44,589 INFO L495 AbstractCegarLoop]: Abstraction has 5664 states and 9159 transitions. [2023-12-19 01:43:44,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:44,589 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 9159 transitions. [2023-12-19 01:43:44,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:43:44,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:44,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:44,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:43:44,593 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:44,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:44,593 INFO L85 PathProgramCache]: Analyzing trace with hash -3245669, now seen corresponding path program 1 times [2023-12-19 01:43:44,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:44,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861975646] [2023-12-19 01:43:44,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:44,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:44,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:44,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:44,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:44,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:44,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:44,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:44,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861975646] [2023-12-19 01:43:44,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861975646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:44,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:44,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:44,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114179629] [2023-12-19 01:43:44,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:44,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:44,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:44,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:44,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:44,800 INFO L87 Difference]: Start difference. First operand 5664 states and 9159 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:48,378 INFO L93 Difference]: Finished difference Result 20537 states and 33628 transitions. [2023-12-19 01:43:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:43:48,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-19 01:43:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:48,488 INFO L225 Difference]: With dead ends: 20537 [2023-12-19 01:43:48,488 INFO L226 Difference]: Without dead ends: 14892 [2023-12-19 01:43:48,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:43:48,508 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1517 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3660 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:48,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1990 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3660 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 01:43:48,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14892 states. [2023-12-19 01:43:48,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14892 to 10977. [2023-12-19 01:43:48,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10977 states, 10048 states have (on average 1.6070859872611465) internal successors, (16148), 10081 states have internal predecessors, (16148), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2023-12-19 01:43:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10977 states to 10977 states and 17819 transitions. [2023-12-19 01:43:49,073 INFO L78 Accepts]: Start accepts. Automaton has 10977 states and 17819 transitions. Word has length 161 [2023-12-19 01:43:49,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:49,073 INFO L495 AbstractCegarLoop]: Abstraction has 10977 states and 17819 transitions. [2023-12-19 01:43:49,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 10977 states and 17819 transitions. [2023-12-19 01:43:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:43:49,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:49,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:49,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:43:49,080 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:49,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:49,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1620686119, now seen corresponding path program 1 times [2023-12-19 01:43:49,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:49,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129782374] [2023-12-19 01:43:49,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:49,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:49,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:49,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:49,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:49,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:49,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:49,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129782374] [2023-12-19 01:43:49,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129782374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:49,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:49,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:49,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31272745] [2023-12-19 01:43:49,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:49,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:49,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:49,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:49,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:49,279 INFO L87 Difference]: Start difference. First operand 10977 states and 17819 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:52,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:52,884 INFO L93 Difference]: Finished difference Result 40072 states and 65842 transitions. [2023-12-19 01:43:52,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:43:52,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-19 01:43:52,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:52,991 INFO L225 Difference]: With dead ends: 40072 [2023-12-19 01:43:52,991 INFO L226 Difference]: Without dead ends: 29114 [2023-12-19 01:43:53,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:43:53,029 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 1611 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 3014 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:53,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 1273 Invalid, 3122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3014 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 01:43:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29114 states. [2023-12-19 01:43:54,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29114 to 21634. [2023-12-19 01:43:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21634 states, 19809 states have (on average 1.6060376596496542) internal successors, (31814), 19874 states have internal predecessors, (31814), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-19 01:43:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21634 states to 21634 states and 35347 transitions. [2023-12-19 01:43:54,247 INFO L78 Accepts]: Start accepts. Automaton has 21634 states and 35347 transitions. Word has length 161 [2023-12-19 01:43:54,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:54,247 INFO L495 AbstractCegarLoop]: Abstraction has 21634 states and 35347 transitions. [2023-12-19 01:43:54,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:54,247 INFO L276 IsEmpty]: Start isEmpty. Operand 21634 states and 35347 transitions. [2023-12-19 01:43:54,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:43:54,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:54,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:54,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:43:54,263 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:54,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:54,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1257219621, now seen corresponding path program 1 times [2023-12-19 01:43:54,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:54,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929574590] [2023-12-19 01:43:54,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:54,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:54,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:54,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:54,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:54,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:54,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:54,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929574590] [2023-12-19 01:43:54,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929574590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:54,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:54,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:54,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097291091] [2023-12-19 01:43:54,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:54,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:54,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:54,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:54,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:54,450 INFO L87 Difference]: Start difference. First operand 21634 states and 35347 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:59,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:59,145 INFO L93 Difference]: Finished difference Result 79143 states and 130872 transitions. [2023-12-19 01:43:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:43:59,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-19 01:43:59,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:59,423 INFO L225 Difference]: With dead ends: 79143 [2023-12-19 01:43:59,423 INFO L226 Difference]: Without dead ends: 57528 [2023-12-19 01:43:59,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:43:59,539 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1521 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3629 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:59,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 1990 Invalid, 3693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3629 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 01:43:59,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57528 states. [2023-12-19 01:44:01,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57528 to 43011. [2023-12-19 01:44:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43011 states, 39394 states have (on average 1.6053206071990658) internal successors, (63240), 39523 states have internal predecessors, (63240), 2714 states have call successors, (2714), 774 states have call predecessors, (2714), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2023-12-19 01:44:02,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43011 states to 43011 states and 70983 transitions. [2023-12-19 01:44:02,102 INFO L78 Accepts]: Start accepts. Automaton has 43011 states and 70983 transitions. Word has length 161 [2023-12-19 01:44:02,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:44:02,102 INFO L495 AbstractCegarLoop]: Abstraction has 43011 states and 70983 transitions. [2023-12-19 01:44:02,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:44:02,102 INFO L276 IsEmpty]: Start isEmpty. Operand 43011 states and 70983 transitions. [2023-12-19 01:44:02,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:44:02,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:44:02,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:44:02,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:44:02,131 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:44:02,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:44:02,131 INFO L85 PathProgramCache]: Analyzing trace with hash -968400231, now seen corresponding path program 1 times [2023-12-19 01:44:02,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:44:02,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686494986] [2023-12-19 01:44:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:44:02,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:44:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:02,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:44:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:02,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:44:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:02,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:44:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:02,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:44:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:02,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:44:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:44:02,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:44:02,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686494986] [2023-12-19 01:44:02,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686494986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:44:02,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:44:02,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:44:02,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203668617] [2023-12-19 01:44:02,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:44:02,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:44:02,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:44:02,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:44:02,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:44:02,322 INFO L87 Difference]: Start difference. First operand 43011 states and 70983 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:44:09,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:44:09,149 INFO L93 Difference]: Finished difference Result 157156 states and 262522 transitions. [2023-12-19 01:44:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:44:09,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-19 01:44:09,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:44:09,728 INFO L225 Difference]: With dead ends: 157156 [2023-12-19 01:44:09,728 INFO L226 Difference]: Without dead ends: 114164 [2023-12-19 01:44:09,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:44:09,849 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1516 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3602 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:44:09,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 1990 Invalid, 3666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3602 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 01:44:09,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114164 states. [2023-12-19 01:44:13,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114164 to 86021. [2023-12-19 01:44:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86021 states, 78820 states have (on average 1.6054300938848007) internal successors, (126540), 79077 states have internal predecessors, (126540), 5402 states have call successors, (5402), 1542 states have call predecessors, (5402), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2023-12-19 01:44:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86021 states to 86021 states and 144161 transitions. [2023-12-19 01:44:14,651 INFO L78 Accepts]: Start accepts. Automaton has 86021 states and 144161 transitions. Word has length 161 [2023-12-19 01:44:14,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:44:14,652 INFO L495 AbstractCegarLoop]: Abstraction has 86021 states and 144161 transitions. [2023-12-19 01:44:14,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:44:14,652 INFO L276 IsEmpty]: Start isEmpty. Operand 86021 states and 144161 transitions. [2023-12-19 01:44:14,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:44:14,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:44:14,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:44:14,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:44:14,704 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:44:14,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:44:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash -293240105, now seen corresponding path program 1 times [2023-12-19 01:44:14,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:44:14,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757889642] [2023-12-19 01:44:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:44:14,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:44:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:44:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:15,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:44:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:15,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:44:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:15,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:44:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:15,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:44:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:44:15,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:44:15,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757889642] [2023-12-19 01:44:15,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757889642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:44:15,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:44:15,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:44:15,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671140652] [2023-12-19 01:44:15,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:44:15,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:44:15,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:44:15,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:44:15,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:44:15,162 INFO L87 Difference]: Start difference. First operand 86021 states and 144161 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:44:25,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:44:25,666 INFO L93 Difference]: Finished difference Result 313444 states and 531986 transitions. [2023-12-19 01:44:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:44:25,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-19 01:44:25,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:44:26,915 INFO L225 Difference]: With dead ends: 313444 [2023-12-19 01:44:26,915 INFO L226 Difference]: Without dead ends: 227442 [2023-12-19 01:44:27,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:44:27,349 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1515 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3589 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:44:27,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1990 Invalid, 3653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3589 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 01:44:27,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227442 states. [2023-12-19 01:44:35,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227442 to 172294. [2023-12-19 01:44:35,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172294 states, 157925 states have (on average 1.605306316289378) internal successors, (253518), 158438 states have internal predecessors, (253518), 10778 states have call successors, (10778), 3078 states have call predecessors, (10778), 3590 states have return successors, (30973), 11289 states have call predecessors, (30973), 10778 states have call successors, (30973) [2023-12-19 01:44:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172294 states to 172294 states and 295269 transitions. [2023-12-19 01:44:36,932 INFO L78 Accepts]: Start accepts. Automaton has 172294 states and 295269 transitions. Word has length 161 [2023-12-19 01:44:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:44:36,933 INFO L495 AbstractCegarLoop]: Abstraction has 172294 states and 295269 transitions. [2023-12-19 01:44:36,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:44:36,933 INFO L276 IsEmpty]: Start isEmpty. Operand 172294 states and 295269 transitions. [2023-12-19 01:44:37,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 01:44:37,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:44:37,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:44:37,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:44:37,037 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:44:37,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:44:37,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1241292071, now seen corresponding path program 1 times [2023-12-19 01:44:37,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:44:37,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26635740] [2023-12-19 01:44:37,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:44:37,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:44:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:37,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:44:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:37,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:44:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:37,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:44:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:37,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:44:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:37,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:44:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:44:37,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:44:37,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26635740] [2023-12-19 01:44:37,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26635740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:44:37,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:44:37,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:44:37,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62781506] [2023-12-19 01:44:37,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:44:37,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:44:37,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:44:37,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:44:37,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:44:37,239 INFO L87 Difference]: Start difference. First operand 172294 states and 295269 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:44:54,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:44:54,916 INFO L93 Difference]: Finished difference Result 626019 states and 1088024 transitions. [2023-12-19 01:44:54,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:44:54,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-19 01:44:54,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:44:58,355 INFO L225 Difference]: With dead ends: 626019 [2023-12-19 01:44:58,356 INFO L226 Difference]: Without dead ends: 453744 [2023-12-19 01:44:59,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:44:59,421 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1514 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3576 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:44:59,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1990 Invalid, 3640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3576 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 01:44:59,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453744 states.