/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_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 02:34:47,457 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 02:34:47,502 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 02:34:47,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 02:34:47,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 02:34:47,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 02:34:47,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 02:34:47,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 02:34:47,519 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 02:34:47,519 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 02:34:47,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 02:34:47,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 02:34:47,520 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 02:34:47,520 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 02:34:47,521 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 02:34:47,521 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 02:34:47,521 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 02:34:47,521 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 02:34:47,522 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 02:34:47,522 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 02:34:47,522 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 02:34:47,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 02:34:47,523 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 02:34:47,523 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 02:34:47,523 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 02:34:47,523 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 02:34:47,524 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 02:34:47,524 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 02:34:47,524 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 02:34:47,524 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 02:34:47,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 02:34:47,525 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 02:34:47,525 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 02:34:47,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 02:34:47,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:34:47,525 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 02:34:47,526 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 02:34:47,526 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 02:34:47,526 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 02:34:47,526 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 02:34:47,526 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 02:34:47,527 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 02:34:47,527 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 02:34:47,527 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 02:34:47,527 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 02:34:47,527 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 02:34:47,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 02:34:47,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 02:34:47,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 02:34:47,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 02:34:47,670 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 02:34:47,670 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 02:34:47,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2023-12-22 02:34:48,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 02:34:48,966 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 02:34:48,967 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2023-12-22 02:34:48,980 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27f86236c/8e0a7bac62c0411b9b9dd6ec378e0c5c/FLAG88a7f8861 [2023-12-22 02:34:48,993 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27f86236c/8e0a7bac62c0411b9b9dd6ec378e0c5c [2023-12-22 02:34:48,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 02:34:48,997 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 02:34:48,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 02:34:48,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 02:34:49,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 02:34:49,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:34:48" (1/1) ... [2023-12-22 02:34:49,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f36be14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49, skipping insertion in model container [2023-12-22 02:34:49,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:34:48" (1/1) ... [2023-12-22 02:34:49,045 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 02:34:49,142 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_2.cil-1+token_ring.08.cil-2.c[914,927] [2023-12-22 02:34:49,178 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_2.cil-1+token_ring.08.cil-2.c[7115,7128] [2023-12-22 02:34:49,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:34:49,239 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 02:34:49,246 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_2.cil-1+token_ring.08.cil-2.c[914,927] [2023-12-22 02:34:49,258 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_2.cil-1+token_ring.08.cil-2.c[7115,7128] [2023-12-22 02:34:49,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:34:49,303 INFO L206 MainTranslator]: Completed translation [2023-12-22 02:34:49,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49 WrapperNode [2023-12-22 02:34:49,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 02:34:49,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 02:34:49,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 02:34:49,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 02:34:49,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49" (1/1) ... [2023-12-22 02:34:49,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49" (1/1) ... [2023-12-22 02:34:49,372 INFO L138 Inliner]: procedures = 70, calls = 82, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 802 [2023-12-22 02:34:49,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 02:34:49,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 02:34:49,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 02:34:49,374 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 02:34:49,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49" (1/1) ... [2023-12-22 02:34:49,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49" (1/1) ... [2023-12-22 02:34:49,413 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49" (1/1) ... [2023-12-22 02:34:49,424 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]. [2023-12-22 02:34:49,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49" (1/1) ... [2023-12-22 02:34:49,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49" (1/1) ... [2023-12-22 02:34:49,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49" (1/1) ... [2023-12-22 02:34:49,441 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49" (1/1) ... [2023-12-22 02:34:49,443 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49" (1/1) ... [2023-12-22 02:34:49,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49" (1/1) ... [2023-12-22 02:34:49,450 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 02:34:49,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 02:34:49,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 02:34:49,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 02:34:49,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49" (1/1) ... [2023-12-22 02:34:49,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:34:49,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 02:34:49,477 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) [2023-12-22 02:34:49,491 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 [2023-12-22 02:34:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 02:34:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-22 02:34:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-22 02:34:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-22 02:34:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-22 02:34:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-22 02:34:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-22 02:34:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-22 02:34:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-22 02:34:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-22 02:34:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-22 02:34:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-22 02:34:49,504 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-22 02:34:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-22 02:34:49,504 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-22 02:34:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-22 02:34:49,504 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-22 02:34:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 02:34:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-22 02:34:49,504 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-22 02:34:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-22 02:34:49,504 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-22 02:34:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-22 02:34:49,505 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-22 02:34:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-22 02:34:49,505 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-22 02:34:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-22 02:34:49,505 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-22 02:34:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 02:34:49,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 02:34:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-22 02:34:49,505 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-22 02:34:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-22 02:34:49,505 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-22 02:34:49,648 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 02:34:49,651 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 02:34:50,384 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 02:34:50,435 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 02:34:50,435 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-12-22 02:34:50,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:34:50 BoogieIcfgContainer [2023-12-22 02:34:50,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 02:34:50,438 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 02:34:50,438 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 02:34:50,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 02:34:50,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:34:48" (1/3) ... [2023-12-22 02:34:50,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a34b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:34:50, skipping insertion in model container [2023-12-22 02:34:50,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49" (2/3) ... [2023-12-22 02:34:50,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a34b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:34:50, skipping insertion in model container [2023-12-22 02:34:50,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:34:50" (3/3) ... [2023-12-22 02:34:50,443 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2023-12-22 02:34:50,455 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 02:34:50,455 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 02:34:50,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 02:34:50,494 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;@346fdf05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 02:34:50,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 02:34:50,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 355 states, 299 states have (on average 1.7023411371237458) internal successors, (509), 307 states have internal predecessors, (509), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-22 02:34:50,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:34:50,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:50,505 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] [2023-12-22 02:34:50,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:50,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:50,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1642674397, now seen corresponding path program 1 times [2023-12-22 02:34:50,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:50,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555019628] [2023-12-22 02:34:50,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:50,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:50,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:50,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:34:50,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 02:34:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:50,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 02:34:50,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:50,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:50,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:50,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555019628] [2023-12-22 02:34:50,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555019628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:50,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:50,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-22 02:34:50,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088360434] [2023-12-22 02:34:50,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:50,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:34:50,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:50,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:34:50,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:50,718 INFO L87 Difference]: Start difference. First operand has 355 states, 299 states have (on average 1.7023411371237458) internal successors, (509), 307 states have internal predecessors, (509), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:51,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:51,513 INFO L93 Difference]: Finished difference Result 783 states and 1285 transitions. [2023-12-22 02:34:51,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:34:51,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-22 02:34:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:51,525 INFO L225 Difference]: With dead ends: 783 [2023-12-22 02:34:51,525 INFO L226 Difference]: Without dead ends: 444 [2023-12-22 02:34:51,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:34:51,532 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 374 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:51,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1055 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 02:34:51,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-12-22 02:34:51,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 437. [2023-12-22 02:34:51,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 364 states have (on average 1.5631868131868132) internal successors, (569), 371 states have internal predecessors, (569), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (50), 46 states have call predecessors, (50), 45 states have call successors, (50) [2023-12-22 02:34:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 668 transitions. [2023-12-22 02:34:51,588 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 668 transitions. Word has length 58 [2023-12-22 02:34:51,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:51,589 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 668 transitions. [2023-12-22 02:34:51,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:51,589 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 668 transitions. [2023-12-22 02:34:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:34:51,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:51,592 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] [2023-12-22 02:34:51,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 02:34:51,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:51,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:51,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:51,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1776908061, now seen corresponding path program 1 times [2023-12-22 02:34:51,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:51,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680479687] [2023-12-22 02:34:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:51,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:51,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:51,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:34:51,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-22 02:34:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:51,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:34:51,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:51,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:51,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:51,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680479687] [2023-12-22 02:34:51,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680479687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:51,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:51,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-22 02:34:51,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835328229] [2023-12-22 02:34:51,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:51,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:34:51,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:51,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:34:51,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:51,923 INFO L87 Difference]: Start difference. First operand 437 states and 668 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:52,565 INFO L93 Difference]: Finished difference Result 796 states and 1189 transitions. [2023-12-22 02:34:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:34:52,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-22 02:34:52,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:52,569 INFO L225 Difference]: With dead ends: 796 [2023-12-22 02:34:52,569 INFO L226 Difference]: Without dead ends: 632 [2023-12-22 02:34:52,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:34:52,571 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 363 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:52,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1051 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-22 02:34:52,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-12-22 02:34:52,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 624. [2023-12-22 02:34:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 507 states have (on average 1.5128205128205128) internal successors, (767), 522 states have internal predecessors, (767), 71 states have call successors, (71), 36 states have call predecessors, (71), 44 states have return successors, (92), 70 states have call predecessors, (92), 67 states have call successors, (92) [2023-12-22 02:34:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 930 transitions. [2023-12-22 02:34:52,653 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 930 transitions. Word has length 58 [2023-12-22 02:34:52,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:52,653 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 930 transitions. [2023-12-22 02:34:52,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:52,654 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 930 transitions. [2023-12-22 02:34:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:34:52,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:52,657 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] [2023-12-22 02:34:52,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-22 02:34:52,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:52,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:52,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:52,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1197404508, now seen corresponding path program 1 times [2023-12-22 02:34:52,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:52,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511354555] [2023-12-22 02:34:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:52,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:52,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:52,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:34:52,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-22 02:34:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:52,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:34:52,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:52,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:52,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:52,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511354555] [2023-12-22 02:34:52,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511354555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:52,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:52,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 02:34:52,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596584346] [2023-12-22 02:34:52,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:52,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:34:52,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:52,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:34:52,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:34:52,971 INFO L87 Difference]: Start difference. First operand 624 states and 930 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:53,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:53,131 INFO L93 Difference]: Finished difference Result 979 states and 1427 transitions. [2023-12-22 02:34:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:34:53,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 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 [2023-12-22 02:34:53,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:53,135 INFO L225 Difference]: With dead ends: 979 [2023-12-22 02:34:53,135 INFO L226 Difference]: Without dead ends: 642 [2023-12-22 02:34:53,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:34:53,137 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 6 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:53,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2505 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:34:53,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-12-22 02:34:53,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 632. [2023-12-22 02:34:53,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 513 states have (on average 1.5029239766081872) internal successors, (771), 528 states have internal predecessors, (771), 71 states have call successors, (71), 36 states have call predecessors, (71), 46 states have return successors, (94), 72 states have call predecessors, (94), 67 states have call successors, (94) [2023-12-22 02:34:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 936 transitions. [2023-12-22 02:34:53,173 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 936 transitions. Word has length 58 [2023-12-22 02:34:53,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:53,174 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 936 transitions. [2023-12-22 02:34:53,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:53,174 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 936 transitions. [2023-12-22 02:34:53,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:34:53,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:53,176 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] [2023-12-22 02:34:53,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-22 02:34:53,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:53,379 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:53,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash 853579490, now seen corresponding path program 1 times [2023-12-22 02:34:53,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:53,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604440091] [2023-12-22 02:34:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:53,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:53,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:53,382 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:34:53,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 02:34:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:53,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:34:53,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:53,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:53,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:53,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604440091] [2023-12-22 02:34:53,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604440091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:53,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:53,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 02:34:53,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625555173] [2023-12-22 02:34:53,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:53,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:34:53,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:53,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:34:53,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:34:53,492 INFO L87 Difference]: Start difference. First operand 632 states and 936 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:53,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:53,621 INFO L93 Difference]: Finished difference Result 989 states and 1429 transitions. [2023-12-22 02:34:53,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:34:53,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 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 [2023-12-22 02:34:53,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:53,624 INFO L225 Difference]: With dead ends: 989 [2023-12-22 02:34:53,625 INFO L226 Difference]: Without dead ends: 644 [2023-12-22 02:34:53,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:34:53,626 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 3 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:53,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2505 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:34:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2023-12-22 02:34:53,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 640. [2023-12-22 02:34:53,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 519 states have (on average 1.4932562620423893) internal successors, (775), 534 states have internal predecessors, (775), 71 states have call successors, (71), 36 states have call predecessors, (71), 48 states have return successors, (96), 74 states have call predecessors, (96), 67 states have call successors, (96) [2023-12-22 02:34:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 942 transitions. [2023-12-22 02:34:53,687 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 942 transitions. Word has length 58 [2023-12-22 02:34:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:53,688 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 942 transitions. [2023-12-22 02:34:53,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:53,690 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 942 transitions. [2023-12-22 02:34:53,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:34:53,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:53,693 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] [2023-12-22 02:34:53,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-22 02:34:53,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:53,898 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:53,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:53,899 INFO L85 PathProgramCache]: Analyzing trace with hash 915619104, now seen corresponding path program 1 times [2023-12-22 02:34:53,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:53,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470731569] [2023-12-22 02:34:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:53,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:53,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:53,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:34:53,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-22 02:34:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:53,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:53,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:54,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:54,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:54,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470731569] [2023-12-22 02:34:54,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470731569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:54,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:54,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:54,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708864789] [2023-12-22 02:34:54,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:54,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:34:54,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:54,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:34:54,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:34:54,072 INFO L87 Difference]: Start difference. First operand 640 states and 942 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-22 02:34:54,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:54,523 INFO L93 Difference]: Finished difference Result 1338 states and 1889 transitions. [2023-12-22 02:34:54,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:34:54,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 4 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 58 [2023-12-22 02:34:54,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:54,530 INFO L225 Difference]: With dead ends: 1338 [2023-12-22 02:34:54,530 INFO L226 Difference]: Without dead ends: 989 [2023-12-22 02:34:54,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:54,532 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 733 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:54,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 553 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:34:54,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2023-12-22 02:34:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 985. [2023-12-22 02:34:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 774 states have (on average 1.434108527131783) internal successors, (1110), 804 states have internal predecessors, (1110), 117 states have call successors, (117), 64 states have call predecessors, (117), 92 states have return successors, (181), 125 states have call predecessors, (181), 113 states have call successors, (181) [2023-12-22 02:34:54,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1408 transitions. [2023-12-22 02:34:54,596 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1408 transitions. Word has length 58 [2023-12-22 02:34:54,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:54,596 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1408 transitions. [2023-12-22 02:34:54,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-22 02:34:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1408 transitions. [2023-12-22 02:34:54,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-22 02:34:54,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:54,599 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] [2023-12-22 02:34:54,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-22 02:34:54,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:54,804 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:54,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:54,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1446148718, now seen corresponding path program 1 times [2023-12-22 02:34:54,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:54,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601900650] [2023-12-22 02:34:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:54,805 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:54,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:54,807 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:34:54,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-22 02:34:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:54,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:34:54,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:54,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:54,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:54,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:54,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601900650] [2023-12-22 02:34:54,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601900650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:54,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:54,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:34:54,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594547102] [2023-12-22 02:34:54,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:54,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:34:54,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:54,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:34:54,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:54,987 INFO L87 Difference]: Start difference. First operand 985 states and 1408 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:34:55,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:55,113 INFO L93 Difference]: Finished difference Result 2299 states and 3179 transitions. [2023-12-22 02:34:55,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:34:55,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 59 [2023-12-22 02:34:55,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:55,125 INFO L225 Difference]: With dead ends: 2299 [2023-12-22 02:34:55,125 INFO L226 Difference]: Without dead ends: 1617 [2023-12-22 02:34:55,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:55,132 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 482 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:55,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 609 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:34:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2023-12-22 02:34:55,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1573. [2023-12-22 02:34:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1214 states have (on average 1.3772652388797364) internal successors, (1672), 1266 states have internal predecessors, (1672), 183 states have call successors, (183), 120 states have call predecessors, (183), 174 states have return successors, (295), 195 states have call predecessors, (295), 179 states have call successors, (295) [2023-12-22 02:34:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2150 transitions. [2023-12-22 02:34:55,271 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2150 transitions. Word has length 59 [2023-12-22 02:34:55,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:55,271 INFO L495 AbstractCegarLoop]: Abstraction has 1573 states and 2150 transitions. [2023-12-22 02:34:55,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:34:55,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2150 transitions. [2023-12-22 02:34:55,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-22 02:34:55,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:55,276 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] [2023-12-22 02:34:55,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-22 02:34:55,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:55,482 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:55,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:55,482 INFO L85 PathProgramCache]: Analyzing trace with hash 221499874, now seen corresponding path program 1 times [2023-12-22 02:34:55,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:55,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492534728] [2023-12-22 02:34:55,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:55,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:55,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:55,490 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:34:55,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-22 02:34:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:55,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:34:55,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:55,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:55,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:55,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:55,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492534728] [2023-12-22 02:34:55,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492534728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:55,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:55,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:34:55,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667855686] [2023-12-22 02:34:55,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:55,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:34:55,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:55,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:34:55,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:55,614 INFO L87 Difference]: Start difference. First operand 1573 states and 2150 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:34:55,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:55,820 INFO L93 Difference]: Finished difference Result 3989 states and 5319 transitions. [2023-12-22 02:34:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:34:55,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2023-12-22 02:34:55,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:55,829 INFO L225 Difference]: With dead ends: 3989 [2023-12-22 02:34:55,830 INFO L226 Difference]: Without dead ends: 2691 [2023-12-22 02:34:55,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:55,833 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 63 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:55,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 973 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:34:55,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2023-12-22 02:34:55,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2659. [2023-12-22 02:34:55,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2659 states, 2032 states have (on average 1.3351377952755905) internal successors, (2713), 2105 states have internal predecessors, (2713), 303 states have call successors, (303), 232 states have call predecessors, (303), 322 states have return successors, (473), 326 states have call predecessors, (473), 299 states have call successors, (473) [2023-12-22 02:34:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2659 states to 2659 states and 3489 transitions. [2023-12-22 02:34:55,972 INFO L78 Accepts]: Start accepts. Automaton has 2659 states and 3489 transitions. Word has length 60 [2023-12-22 02:34:55,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:55,972 INFO L495 AbstractCegarLoop]: Abstraction has 2659 states and 3489 transitions. [2023-12-22 02:34:55,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:34:55,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2659 states and 3489 transitions. [2023-12-22 02:34:55,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 02:34:55,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:55,974 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] [2023-12-22 02:34:55,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-22 02:34:56,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:56,178 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:56,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:56,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1574263521, now seen corresponding path program 1 times [2023-12-22 02:34:56,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:56,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546785680] [2023-12-22 02:34:56,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:56,179 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:56,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:56,180 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:34:56,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-22 02:34:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:56,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:34:56,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:56,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:56,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:56,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546785680] [2023-12-22 02:34:56,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546785680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:56,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:56,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:34:56,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671598583] [2023-12-22 02:34:56,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:56,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:34:56,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:56,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:34:56,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:56,330 INFO L87 Difference]: Start difference. First operand 2659 states and 3489 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:34:56,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:56,500 INFO L93 Difference]: Finished difference Result 5595 states and 7227 transitions. [2023-12-22 02:34:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:34:56,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2023-12-22 02:34:56,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:56,512 INFO L225 Difference]: With dead ends: 5595 [2023-12-22 02:34:56,512 INFO L226 Difference]: Without dead ends: 3219 [2023-12-22 02:34:56,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:56,519 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 477 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:56,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 609 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:34:56,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2023-12-22 02:34:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3175. [2023-12-22 02:34:56,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3175 states, 2420 states have (on average 1.3161157024793388) internal successors, (3185), 2501 states have internal predecessors, (3185), 367 states have call successors, (367), 288 states have call predecessors, (367), 386 states have return successors, (556), 390 states have call predecessors, (556), 363 states have call successors, (556) [2023-12-22 02:34:56,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 4108 transitions. [2023-12-22 02:34:56,698 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 4108 transitions. Word has length 66 [2023-12-22 02:34:56,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:56,699 INFO L495 AbstractCegarLoop]: Abstraction has 3175 states and 4108 transitions. [2023-12-22 02:34:56,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:34:56,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 4108 transitions. [2023-12-22 02:34:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-22 02:34:56,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:56,700 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:34:56,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-22 02:34:56,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:56,904 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:56,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:56,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1040856206, now seen corresponding path program 1 times [2023-12-22 02:34:56,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:56,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187993755] [2023-12-22 02:34:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:56,905 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:56,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:56,907 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:34:56,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-22 02:34:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:56,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:56,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:57,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:57,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:57,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:57,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187993755] [2023-12-22 02:34:57,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187993755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:57,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:57,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:57,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729202885] [2023-12-22 02:34:57,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:57,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:34:57,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:57,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:34:57,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:34:57,004 INFO L87 Difference]: Start difference. First operand 3175 states and 4108 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:34:57,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:57,342 INFO L93 Difference]: Finished difference Result 3795 states and 4881 transitions. [2023-12-22 02:34:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:34:57,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2023-12-22 02:34:57,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:57,355 INFO L225 Difference]: With dead ends: 3795 [2023-12-22 02:34:57,355 INFO L226 Difference]: Without dead ends: 3792 [2023-12-22 02:34:57,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:57,356 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 997 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:57,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 592 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:34:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3792 states. [2023-12-22 02:34:57,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3792 to 3758. [2023-12-22 02:34:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 2858 states have (on average 1.3065080475857243) internal successors, (3734), 2953 states have internal predecessors, (3734), 432 states have call successors, (432), 344 states have call predecessors, (432), 466 states have return successors, (659), 465 states have call predecessors, (659), 429 states have call successors, (659) [2023-12-22 02:34:57,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 4825 transitions. [2023-12-22 02:34:57,555 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 4825 transitions. Word has length 67 [2023-12-22 02:34:57,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:57,556 INFO L495 AbstractCegarLoop]: Abstraction has 3758 states and 4825 transitions. [2023-12-22 02:34:57,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:34:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 4825 transitions. [2023-12-22 02:34:57,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-22 02:34:57,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:57,558 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:34:57,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-22 02:34:57,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:57,762 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:57,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:57,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2094372661, now seen corresponding path program 1 times [2023-12-22 02:34:57,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:57,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33173931] [2023-12-22 02:34:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:57,764 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:57,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:57,765 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:34:57,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-22 02:34:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:57,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:34:57,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:58,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:34:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:58,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:58,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33173931] [2023-12-22 02:34:58,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33173931] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:34:58,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:34:58,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2023-12-22 02:34:58,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663671551] [2023-12-22 02:34:58,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:34:58,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 02:34:58,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:58,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 02:34:58,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:34:58,134 INFO L87 Difference]: Start difference. First operand 3758 states and 4825 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-22 02:34:58,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:58,957 INFO L93 Difference]: Finished difference Result 8297 states and 10581 transitions. [2023-12-22 02:34:58,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:34:58,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 68 [2023-12-22 02:34:58,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:58,997 INFO L225 Difference]: With dead ends: 8297 [2023-12-22 02:34:58,997 INFO L226 Difference]: Without dead ends: 8294 [2023-12-22 02:34:59,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:34:59,002 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 1376 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:59,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 1826 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:34:59,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8294 states. [2023-12-22 02:34:59,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8294 to 6112. [2023-12-22 02:34:59,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6112 states, 4632 states have (on average 1.2983592400690847) internal successors, (6014), 4793 states have internal predecessors, (6014), 696 states have call successors, (696), 568 states have call predecessors, (696), 782 states have return successors, (1093), 755 states have call predecessors, (1093), 693 states have call successors, (1093) [2023-12-22 02:34:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6112 states to 6112 states and 7803 transitions. [2023-12-22 02:34:59,480 INFO L78 Accepts]: Start accepts. Automaton has 6112 states and 7803 transitions. Word has length 68 [2023-12-22 02:34:59,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:59,481 INFO L495 AbstractCegarLoop]: Abstraction has 6112 states and 7803 transitions. [2023-12-22 02:34:59,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-22 02:34:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 6112 states and 7803 transitions. [2023-12-22 02:34:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-22 02:34:59,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:59,483 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:34:59,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-22 02:34:59,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:59,687 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:59,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:59,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1832774066, now seen corresponding path program 2 times [2023-12-22 02:34:59,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:59,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535983909] [2023-12-22 02:34:59,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 02:34:59,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:59,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:59,693 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:34:59,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-22 02:34:59,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-22 02:34:59,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 02:34:59,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:34:59,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:59,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:59,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:59,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535983909] [2023-12-22 02:34:59,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535983909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:59,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:59,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:34:59,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671866117] [2023-12-22 02:34:59,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:59,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:34:59,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:59,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:34:59,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:59,781 INFO L87 Difference]: Start difference. First operand 6112 states and 7803 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:35:00,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:00,058 INFO L93 Difference]: Finished difference Result 9083 states and 11659 transitions. [2023-12-22 02:35:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:00,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2023-12-22 02:35:00,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:00,070 INFO L225 Difference]: With dead ends: 9083 [2023-12-22 02:35:00,070 INFO L226 Difference]: Without dead ends: 3780 [2023-12-22 02:35:00,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:00,078 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 513 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:00,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 667 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:00,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2023-12-22 02:35:00,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 3756. [2023-12-22 02:35:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 2860 states have (on average 1.2895104895104894) internal successors, (3688), 2951 states have internal predecessors, (3688), 432 states have call successors, (432), 344 states have call predecessors, (432), 462 states have return successors, (627), 465 states have call predecessors, (627), 429 states have call successors, (627) [2023-12-22 02:35:00,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 4747 transitions. [2023-12-22 02:35:00,252 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 4747 transitions. Word has length 71 [2023-12-22 02:35:00,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:00,252 INFO L495 AbstractCegarLoop]: Abstraction has 3756 states and 4747 transitions. [2023-12-22 02:35:00,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:35:00,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 4747 transitions. [2023-12-22 02:35:00,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-22 02:35:00,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:00,253 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] [2023-12-22 02:35:00,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-22 02:35:00,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:00,458 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:00,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:00,458 INFO L85 PathProgramCache]: Analyzing trace with hash -760462493, now seen corresponding path program 1 times [2023-12-22 02:35:00,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:00,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87176989] [2023-12-22 02:35:00,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:00,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:00,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:00,460 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:00,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-22 02:35:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:00,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:00,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:00,550 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:00,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:00,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:00,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87176989] [2023-12-22 02:35:00,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87176989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:00,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:00,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:35:00,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985181465] [2023-12-22 02:35:00,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:00,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:00,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:00,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:00,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:00,552 INFO L87 Difference]: Start difference. First operand 3756 states and 4747 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:35:00,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:00,965 INFO L93 Difference]: Finished difference Result 10193 states and 12706 transitions. [2023-12-22 02:35:00,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:00,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2023-12-22 02:35:00,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:00,991 INFO L225 Difference]: With dead ends: 10193 [2023-12-22 02:35:00,991 INFO L226 Difference]: Without dead ends: 5404 [2023-12-22 02:35:00,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:00,998 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 84 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:00,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1068 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:01,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2023-12-22 02:35:01,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 5404. [2023-12-22 02:35:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5404 states, 4070 states have (on average 1.267076167076167) internal successors, (5157), 4206 states have internal predecessors, (5157), 630 states have call successors, (630), 512 states have call predecessors, (630), 702 states have return successors, (951), 690 states have call predecessors, (951), 627 states have call successors, (951) [2023-12-22 02:35:01,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 6738 transitions. [2023-12-22 02:35:01,290 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 6738 transitions. Word has length 76 [2023-12-22 02:35:01,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:01,290 INFO L495 AbstractCegarLoop]: Abstraction has 5404 states and 6738 transitions. [2023-12-22 02:35:01,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:35:01,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 6738 transitions. [2023-12-22 02:35:01,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-22 02:35:01,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:01,293 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-22 02:35:01,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-22 02:35:01,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:01,497 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:01,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:01,497 INFO L85 PathProgramCache]: Analyzing trace with hash 785490184, now seen corresponding path program 1 times [2023-12-22 02:35:01,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:01,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19621662] [2023-12-22 02:35:01,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:01,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:01,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:01,499 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:01,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-22 02:35:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:01,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:01,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 02:35:01,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:01,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:01,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19621662] [2023-12-22 02:35:01,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19621662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:01,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:01,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:01,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405207891] [2023-12-22 02:35:01,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:01,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:35:01,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:01,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:35:01,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:01,641 INFO L87 Difference]: Start difference. First operand 5404 states and 6738 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:35:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:02,310 INFO L93 Difference]: Finished difference Result 10551 states and 13070 transitions. [2023-12-22 02:35:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:35:02,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 85 [2023-12-22 02:35:02,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:02,332 INFO L225 Difference]: With dead ends: 10551 [2023-12-22 02:35:02,332 INFO L226 Difference]: Without dead ends: 5434 [2023-12-22 02:35:02,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:02,342 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 714 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:02,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 532 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:02,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5434 states. [2023-12-22 02:35:02,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5434 to 5434. [2023-12-22 02:35:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5434 states, 4085 states have (on average 1.2499388004895962) internal successors, (5106), 4236 states have internal predecessors, (5106), 630 states have call successors, (630), 512 states have call predecessors, (630), 717 states have return successors, (951), 690 states have call predecessors, (951), 627 states have call successors, (951) [2023-12-22 02:35:02,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 6687 transitions. [2023-12-22 02:35:02,854 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 6687 transitions. Word has length 85 [2023-12-22 02:35:02,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:02,855 INFO L495 AbstractCegarLoop]: Abstraction has 5434 states and 6687 transitions. [2023-12-22 02:35:02,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:35:02,855 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 6687 transitions. [2023-12-22 02:35:02,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-22 02:35:02,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:02,858 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:02,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:03,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:03,063 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:03,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:03,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1653971837, now seen corresponding path program 1 times [2023-12-22 02:35:03,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:03,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929185854] [2023-12-22 02:35:03,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:03,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:03,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:03,068 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:03,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 02:35:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:03,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:03,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 02:35:03,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:03,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:03,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929185854] [2023-12-22 02:35:03,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929185854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:03,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:03,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:35:03,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639859503] [2023-12-22 02:35:03,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:03,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:03,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:03,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:03,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:03,195 INFO L87 Difference]: Start difference. First operand 5434 states and 6687 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:35:03,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:03,557 INFO L93 Difference]: Finished difference Result 10340 states and 12625 transitions. [2023-12-22 02:35:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:03,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2023-12-22 02:35:03,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:03,569 INFO L225 Difference]: With dead ends: 10340 [2023-12-22 02:35:03,569 INFO L226 Difference]: Without dead ends: 5183 [2023-12-22 02:35:03,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:03,577 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 91 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:03,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1059 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:03,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5183 states. [2023-12-22 02:35:03,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5183 to 5180. [2023-12-22 02:35:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5180 states, 3901 states have (on average 1.2376313765701101) internal successors, (4828), 4046 states have internal predecessors, (4828), 592 states have call successors, (592), 484 states have call predecessors, (592), 685 states have return successors, (834), 652 states have call predecessors, (834), 589 states have call successors, (834) [2023-12-22 02:35:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5180 states to 5180 states and 6254 transitions. [2023-12-22 02:35:03,912 INFO L78 Accepts]: Start accepts. Automaton has 5180 states and 6254 transitions. Word has length 86 [2023-12-22 02:35:03,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:03,912 INFO L495 AbstractCegarLoop]: Abstraction has 5180 states and 6254 transitions. [2023-12-22 02:35:03,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:35:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 5180 states and 6254 transitions. [2023-12-22 02:35:03,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:03,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:03,915 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] [2023-12-22 02:35:03,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:04,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:04,132 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:04,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:04,133 INFO L85 PathProgramCache]: Analyzing trace with hash 550923923, now seen corresponding path program 1 times [2023-12-22 02:35:04,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:04,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810104069] [2023-12-22 02:35:04,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:04,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:04,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:04,134 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:04,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-22 02:35:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:04,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:04,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:04,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:04,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:04,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810104069] [2023-12-22 02:35:04,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810104069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:04,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:04,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:35:04,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640275306] [2023-12-22 02:35:04,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:04,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:04,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:04,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:04,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:04,276 INFO L87 Difference]: Start difference. First operand 5180 states and 6254 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:04,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:04,560 INFO L93 Difference]: Finished difference Result 5432 states and 6658 transitions. [2023-12-22 02:35:04,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:04,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:04,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:04,597 INFO L225 Difference]: With dead ends: 5432 [2023-12-22 02:35:04,597 INFO L226 Difference]: Without dead ends: 5180 [2023-12-22 02:35:04,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:04,612 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 409 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:04,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 609 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:35:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5180 states. [2023-12-22 02:35:04,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5180 to 5180. [2023-12-22 02:35:04,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5180 states, 3901 states have (on average 1.2373750320430659) internal successors, (4827), 4046 states have internal predecessors, (4827), 592 states have call successors, (592), 484 states have call predecessors, (592), 685 states have return successors, (834), 652 states have call predecessors, (834), 589 states have call successors, (834) [2023-12-22 02:35:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5180 states to 5180 states and 6253 transitions. [2023-12-22 02:35:04,930 INFO L78 Accepts]: Start accepts. Automaton has 5180 states and 6253 transitions. Word has length 122 [2023-12-22 02:35:04,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:04,930 INFO L495 AbstractCegarLoop]: Abstraction has 5180 states and 6253 transitions. [2023-12-22 02:35:04,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5180 states and 6253 transitions. [2023-12-22 02:35:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:04,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:04,934 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] [2023-12-22 02:35:04,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-22 02:35:05,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:05,139 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:05,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:05,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2096680431, now seen corresponding path program 1 times [2023-12-22 02:35:05,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:05,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945791093] [2023-12-22 02:35:05,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:05,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:05,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:05,141 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:05,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-22 02:35:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:05,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:05,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:05,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:05,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:05,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945791093] [2023-12-22 02:35:05,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945791093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:05,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:05,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:05,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280133459] [2023-12-22 02:35:05,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:05,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:05,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:05,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:05,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:05,303 INFO L87 Difference]: Start difference. First operand 5180 states and 6253 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:06,126 INFO L93 Difference]: Finished difference Result 5707 states and 7110 transitions. [2023-12-22 02:35:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:35:06,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:06,138 INFO L225 Difference]: With dead ends: 5707 [2023-12-22 02:35:06,139 INFO L226 Difference]: Without dead ends: 5460 [2023-12-22 02:35:06,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:06,140 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 935 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:06,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1219 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-22 02:35:06,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2023-12-22 02:35:06,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 5437. [2023-12-22 02:35:06,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.2600387034349299) internal successors, (5209), 4280 states have internal predecessors, (5209), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-22 02:35:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6670 transitions. [2023-12-22 02:35:06,443 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6670 transitions. Word has length 122 [2023-12-22 02:35:06,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:06,443 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6670 transitions. [2023-12-22 02:35:06,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6670 transitions. [2023-12-22 02:35:06,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:06,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:06,446 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] [2023-12-22 02:35:06,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:06,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:06,665 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:06,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:06,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1922361553, now seen corresponding path program 1 times [2023-12-22 02:35:06,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:06,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443928205] [2023-12-22 02:35:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:06,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:06,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:06,668 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:06,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-22 02:35:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:06,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:06,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:06,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:06,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:06,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443928205] [2023-12-22 02:35:06,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443928205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:06,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:06,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:06,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974296517] [2023-12-22 02:35:06,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:06,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:06,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:06,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:06,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:06,866 INFO L87 Difference]: Start difference. First operand 5437 states and 6670 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:07,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:07,708 INFO L93 Difference]: Finished difference Result 5941 states and 7489 transitions. [2023-12-22 02:35:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:07,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:07,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:07,749 INFO L225 Difference]: With dead ends: 5941 [2023-12-22 02:35:07,749 INFO L226 Difference]: Without dead ends: 5437 [2023-12-22 02:35:07,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:07,755 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 707 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:07,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 816 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:07,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2023-12-22 02:35:08,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2023-12-22 02:35:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.258345428156749) internal successors, (5202), 4280 states have internal predecessors, (5202), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-22 02:35:08,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6663 transitions. [2023-12-22 02:35:08,115 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6663 transitions. Word has length 122 [2023-12-22 02:35:08,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:08,115 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6663 transitions. [2023-12-22 02:35:08,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:08,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6663 transitions. [2023-12-22 02:35:08,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:08,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:08,120 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] [2023-12-22 02:35:08,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-22 02:35:08,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:08,325 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:08,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:08,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1827317231, now seen corresponding path program 1 times [2023-12-22 02:35:08,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:08,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862893146] [2023-12-22 02:35:08,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:08,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:08,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:08,328 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:08,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-22 02:35:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:08,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:08,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:08,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:08,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:08,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862893146] [2023-12-22 02:35:08,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862893146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:08,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:08,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:08,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818924909] [2023-12-22 02:35:08,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:08,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:08,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:08,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:08,540 INFO L87 Difference]: Start difference. First operand 5437 states and 6663 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:09,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:09,184 INFO L93 Difference]: Finished difference Result 5941 states and 7475 transitions. [2023-12-22 02:35:09,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:09,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:09,198 INFO L225 Difference]: With dead ends: 5941 [2023-12-22 02:35:09,198 INFO L226 Difference]: Without dead ends: 5437 [2023-12-22 02:35:09,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:09,201 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 701 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:09,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 809 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:35:09,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2023-12-22 02:35:09,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2023-12-22 02:35:09,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.256652152878568) internal successors, (5195), 4280 states have internal predecessors, (5195), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-22 02:35:09,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6656 transitions. [2023-12-22 02:35:09,561 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6656 transitions. Word has length 122 [2023-12-22 02:35:09,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:09,563 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6656 transitions. [2023-12-22 02:35:09,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:09,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6656 transitions. [2023-12-22 02:35:09,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:09,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:09,568 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] [2023-12-22 02:35:09,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:09,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:09,772 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:09,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:09,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1809727279, now seen corresponding path program 1 times [2023-12-22 02:35:09,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:09,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323471496] [2023-12-22 02:35:09,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:09,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:09,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:09,775 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:09,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-22 02:35:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:09,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:09,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:09,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:09,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:09,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:09,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323471496] [2023-12-22 02:35:09,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323471496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:09,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:09,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:09,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868122406] [2023-12-22 02:35:09,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:09,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:09,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:09,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:09,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:09,934 INFO L87 Difference]: Start difference. First operand 5437 states and 6656 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:10,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:10,638 INFO L93 Difference]: Finished difference Result 5941 states and 7461 transitions. [2023-12-22 02:35:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:10,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:10,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:10,648 INFO L225 Difference]: With dead ends: 5941 [2023-12-22 02:35:10,648 INFO L226 Difference]: Without dead ends: 5437 [2023-12-22 02:35:10,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:10,650 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 694 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:10,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 802 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:35:10,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2023-12-22 02:35:11,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2023-12-22 02:35:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.254958877600387) internal successors, (5188), 4280 states have internal predecessors, (5188), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-22 02:35:11,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6649 transitions. [2023-12-22 02:35:11,134 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6649 transitions. Word has length 122 [2023-12-22 02:35:11,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:11,134 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6649 transitions. [2023-12-22 02:35:11,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:11,135 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6649 transitions. [2023-12-22 02:35:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:11,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:11,142 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] [2023-12-22 02:35:11,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:11,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:11,347 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:11,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:11,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1452857233, now seen corresponding path program 1 times [2023-12-22 02:35:11,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:11,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763599410] [2023-12-22 02:35:11,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:11,348 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:11,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:11,365 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:11,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-22 02:35:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:11,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:11,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:11,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:11,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:11,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763599410] [2023-12-22 02:35:11,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763599410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:11,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:11,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:11,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953638604] [2023-12-22 02:35:11,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:11,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:11,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:11,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:11,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:11,570 INFO L87 Difference]: Start difference. First operand 5437 states and 6649 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:12,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:12,293 INFO L93 Difference]: Finished difference Result 5941 states and 7447 transitions. [2023-12-22 02:35:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:12,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:12,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:12,303 INFO L225 Difference]: With dead ends: 5941 [2023-12-22 02:35:12,304 INFO L226 Difference]: Without dead ends: 5437 [2023-12-22 02:35:12,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:12,306 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 688 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:12,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 795 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:12,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2023-12-22 02:35:12,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2023-12-22 02:35:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.2532656023222062) internal successors, (5181), 4280 states have internal predecessors, (5181), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-22 02:35:12,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6642 transitions. [2023-12-22 02:35:12,765 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6642 transitions. Word has length 122 [2023-12-22 02:35:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:12,766 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6642 transitions. [2023-12-22 02:35:12,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:12,766 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6642 transitions. [2023-12-22 02:35:12,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:12,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:12,769 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] [2023-12-22 02:35:12,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:12,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:12,975 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:12,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:12,975 INFO L85 PathProgramCache]: Analyzing trace with hash -243013423, now seen corresponding path program 1 times [2023-12-22 02:35:12,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:12,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304512887] [2023-12-22 02:35:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:12,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:12,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:12,977 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:12,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-22 02:35:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:13,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:13,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:13,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:13,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:13,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304512887] [2023-12-22 02:35:13,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304512887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:13,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:13,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:13,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027175829] [2023-12-22 02:35:13,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:13,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:13,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:13,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:13,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:13,133 INFO L87 Difference]: Start difference. First operand 5437 states and 6642 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:13,886 INFO L93 Difference]: Finished difference Result 5941 states and 7433 transitions. [2023-12-22 02:35:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:13,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:13,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:13,901 INFO L225 Difference]: With dead ends: 5941 [2023-12-22 02:35:13,901 INFO L226 Difference]: Without dead ends: 5437 [2023-12-22 02:35:13,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:13,904 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 682 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:13,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 788 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:35:13,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2023-12-22 02:35:14,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2023-12-22 02:35:14,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.251572327044025) internal successors, (5174), 4280 states have internal predecessors, (5174), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-22 02:35:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6635 transitions. [2023-12-22 02:35:14,366 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6635 transitions. Word has length 122 [2023-12-22 02:35:14,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:14,367 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6635 transitions. [2023-12-22 02:35:14,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:14,367 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6635 transitions. [2023-12-22 02:35:14,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:14,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:14,370 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] [2023-12-22 02:35:14,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:14,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:14,575 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:14,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:14,576 INFO L85 PathProgramCache]: Analyzing trace with hash 810659729, now seen corresponding path program 1 times [2023-12-22 02:35:14,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:14,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105133452] [2023-12-22 02:35:14,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:14,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:14,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:14,578 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:14,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-22 02:35:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:14,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:14,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:14,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:14,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:14,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105133452] [2023-12-22 02:35:14,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105133452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:14,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:14,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:14,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217258829] [2023-12-22 02:35:14,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:14,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:14,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:14,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:14,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:14,762 INFO L87 Difference]: Start difference. First operand 5437 states and 6635 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:15,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:15,636 INFO L93 Difference]: Finished difference Result 5941 states and 7419 transitions. [2023-12-22 02:35:15,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:15,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:15,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:15,654 INFO L225 Difference]: With dead ends: 5941 [2023-12-22 02:35:15,654 INFO L226 Difference]: Without dead ends: 5437 [2023-12-22 02:35:15,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:15,658 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 676 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:15,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 781 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:15,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2023-12-22 02:35:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2023-12-22 02:35:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.2498790517658442) internal successors, (5167), 4280 states have internal predecessors, (5167), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-22 02:35:16,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6628 transitions. [2023-12-22 02:35:16,109 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6628 transitions. Word has length 122 [2023-12-22 02:35:16,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:16,109 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6628 transitions. [2023-12-22 02:35:16,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:16,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6628 transitions. [2023-12-22 02:35:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:16,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:16,112 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] [2023-12-22 02:35:16,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-12-22 02:35:16,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:16,317 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:16,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:16,317 INFO L85 PathProgramCache]: Analyzing trace with hash 290459857, now seen corresponding path program 1 times [2023-12-22 02:35:16,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:16,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114511148] [2023-12-22 02:35:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:16,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:16,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:16,319 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:16,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-22 02:35:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:16,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:16,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:16,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:16,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:16,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114511148] [2023-12-22 02:35:16,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114511148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:16,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:16,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:16,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527969274] [2023-12-22 02:35:16,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:16,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:16,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:16,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:16,509 INFO L87 Difference]: Start difference. First operand 5437 states and 6628 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:17,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:17,319 INFO L93 Difference]: Finished difference Result 5941 states and 7405 transitions. [2023-12-22 02:35:17,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:17,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:17,329 INFO L225 Difference]: With dead ends: 5941 [2023-12-22 02:35:17,329 INFO L226 Difference]: Without dead ends: 5437 [2023-12-22 02:35:17,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:17,331 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 670 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:17,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 774 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:35:17,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2023-12-22 02:35:17,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2023-12-22 02:35:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.2481857764876634) internal successors, (5160), 4280 states have internal predecessors, (5160), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-22 02:35:17,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6621 transitions. [2023-12-22 02:35:17,824 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6621 transitions. Word has length 122 [2023-12-22 02:35:17,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:17,825 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6621 transitions. [2023-12-22 02:35:17,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:17,825 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6621 transitions. [2023-12-22 02:35:17,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:17,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:17,828 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] [2023-12-22 02:35:17,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:18,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:18,033 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:18,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1382057873, now seen corresponding path program 1 times [2023-12-22 02:35:18,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:18,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536458997] [2023-12-22 02:35:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:18,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:18,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:18,035 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:18,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-22 02:35:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:18,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:18,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:18,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:18,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536458997] [2023-12-22 02:35:18,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536458997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:18,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:18,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:18,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553611499] [2023-12-22 02:35:18,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:18,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:18,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:18,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:18,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:18,192 INFO L87 Difference]: Start difference. First operand 5437 states and 6621 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:19,192 INFO L93 Difference]: Finished difference Result 6059 states and 7583 transitions. [2023-12-22 02:35:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:35:19,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:19,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:19,201 INFO L225 Difference]: With dead ends: 6059 [2023-12-22 02:35:19,201 INFO L226 Difference]: Without dead ends: 5555 [2023-12-22 02:35:19,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:19,203 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 742 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:19,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 768 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:35:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5555 states. [2023-12-22 02:35:19,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5555 to 5555. [2023-12-22 02:35:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5555 states, 4246 states have (on average 1.2522373999057936) internal successors, (5317), 4392 states have internal predecessors, (5317), 611 states have call successors, (611), 494 states have call predecessors, (611), 696 states have return successors, (854), 671 states have call predecessors, (854), 608 states have call successors, (854) [2023-12-22 02:35:19,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5555 states to 5555 states and 6782 transitions. [2023-12-22 02:35:19,717 INFO L78 Accepts]: Start accepts. Automaton has 5555 states and 6782 transitions. Word has length 122 [2023-12-22 02:35:19,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:19,717 INFO L495 AbstractCegarLoop]: Abstraction has 5555 states and 6782 transitions. [2023-12-22 02:35:19,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:19,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5555 states and 6782 transitions. [2023-12-22 02:35:19,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:19,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:19,720 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] [2023-12-22 02:35:19,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:19,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:19,925 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:19,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:19,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2046412591, now seen corresponding path program 1 times [2023-12-22 02:35:19,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:19,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203318004] [2023-12-22 02:35:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:19,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:19,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:19,928 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:19,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-22 02:35:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:20,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:20,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:20,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:20,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:20,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203318004] [2023-12-22 02:35:20,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203318004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:20,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:20,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:20,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353117105] [2023-12-22 02:35:20,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:20,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:20,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:20,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:20,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:20,124 INFO L87 Difference]: Start difference. First operand 5555 states and 6782 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:21,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:21,194 INFO L93 Difference]: Finished difference Result 6295 states and 7905 transitions. [2023-12-22 02:35:21,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:35:21,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:21,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:21,217 INFO L225 Difference]: With dead ends: 6295 [2023-12-22 02:35:21,217 INFO L226 Difference]: Without dead ends: 5673 [2023-12-22 02:35:21,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:21,222 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 735 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:21,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 761 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:35:21,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5673 states. [2023-12-22 02:35:21,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5673 to 5673. [2023-12-22 02:35:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5673 states, 4358 states have (on average 1.255162918770078) internal successors, (5470), 4504 states have internal predecessors, (5470), 613 states have call successors, (613), 498 states have call predecessors, (613), 700 states have return successors, (856), 673 states have call predecessors, (856), 610 states have call successors, (856) [2023-12-22 02:35:21,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 6939 transitions. [2023-12-22 02:35:21,840 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 6939 transitions. Word has length 122 [2023-12-22 02:35:21,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:21,840 INFO L495 AbstractCegarLoop]: Abstraction has 5673 states and 6939 transitions. [2023-12-22 02:35:21,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:21,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 6939 transitions. [2023-12-22 02:35:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:21,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:21,843 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] [2023-12-22 02:35:21,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-12-22 02:35:22,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:22,049 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:22,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:22,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1910140432, now seen corresponding path program 1 times [2023-12-22 02:35:22,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:22,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760739990] [2023-12-22 02:35:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:22,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:22,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:22,051 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:22,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-22 02:35:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:22,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:22,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:22,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:22,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:22,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:22,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760739990] [2023-12-22 02:35:22,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760739990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:22,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:22,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:22,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9516003] [2023-12-22 02:35:22,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:22,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:22,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:22,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:22,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:22,215 INFO L87 Difference]: Start difference. First operand 5673 states and 6939 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:23,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:23,265 INFO L93 Difference]: Finished difference Result 6531 states and 8219 transitions. [2023-12-22 02:35:23,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:35:23,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:23,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:23,276 INFO L225 Difference]: With dead ends: 6531 [2023-12-22 02:35:23,276 INFO L226 Difference]: Without dead ends: 5791 [2023-12-22 02:35:23,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:23,279 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 728 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:23,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 754 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:35:23,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5791 states. [2023-12-22 02:35:23,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5791 to 5791. [2023-12-22 02:35:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5791 states, 4470 states have (on average 1.2570469798657717) internal successors, (5619), 4616 states have internal predecessors, (5619), 615 states have call successors, (615), 502 states have call predecessors, (615), 704 states have return successors, (858), 675 states have call predecessors, (858), 612 states have call successors, (858) [2023-12-22 02:35:23,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5791 states to 5791 states and 7092 transitions. [2023-12-22 02:35:23,854 INFO L78 Accepts]: Start accepts. Automaton has 5791 states and 7092 transitions. Word has length 122 [2023-12-22 02:35:23,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:23,854 INFO L495 AbstractCegarLoop]: Abstraction has 5791 states and 7092 transitions. [2023-12-22 02:35:23,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:23,855 INFO L276 IsEmpty]: Start isEmpty. Operand 5791 states and 7092 transitions. [2023-12-22 02:35:23,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:23,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:23,858 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] [2023-12-22 02:35:23,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:24,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:24,067 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:24,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:24,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1089849905, now seen corresponding path program 1 times [2023-12-22 02:35:24,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:24,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554114038] [2023-12-22 02:35:24,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:24,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:24,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:24,069 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:24,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-22 02:35:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:24,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:24,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:24,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:24,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:24,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554114038] [2023-12-22 02:35:24,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554114038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:24,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:24,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:24,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110308733] [2023-12-22 02:35:24,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:24,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:24,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:24,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:24,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:24,219 INFO L87 Difference]: Start difference. First operand 5791 states and 7092 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:25,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:25,197 INFO L93 Difference]: Finished difference Result 6767 states and 8525 transitions. [2023-12-22 02:35:25,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:35:25,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:25,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:25,208 INFO L225 Difference]: With dead ends: 6767 [2023-12-22 02:35:25,208 INFO L226 Difference]: Without dead ends: 5909 [2023-12-22 02:35:25,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:25,211 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 721 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:25,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 747 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:25,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5909 states. [2023-12-22 02:35:25,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5909 to 5909. [2023-12-22 02:35:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5909 states, 4582 states have (on average 1.2579659537319947) internal successors, (5764), 4728 states have internal predecessors, (5764), 617 states have call successors, (617), 506 states have call predecessors, (617), 708 states have return successors, (860), 677 states have call predecessors, (860), 614 states have call successors, (860) [2023-12-22 02:35:25,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5909 states to 5909 states and 7241 transitions. [2023-12-22 02:35:25,817 INFO L78 Accepts]: Start accepts. Automaton has 5909 states and 7241 transitions. Word has length 122 [2023-12-22 02:35:25,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:25,817 INFO L495 AbstractCegarLoop]: Abstraction has 5909 states and 7241 transitions. [2023-12-22 02:35:25,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:25,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5909 states and 7241 transitions. [2023-12-22 02:35:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:25,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:25,820 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] [2023-12-22 02:35:25,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:26,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:26,024 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:26,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:26,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1948107408, now seen corresponding path program 1 times [2023-12-22 02:35:26,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:26,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156782683] [2023-12-22 02:35:26,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:26,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:26,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:26,027 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:26,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-22 02:35:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:26,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:26,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:26,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:26,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:26,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156782683] [2023-12-22 02:35:26,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156782683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:26,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:26,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:26,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927495013] [2023-12-22 02:35:26,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:26,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:26,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:26,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:26,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:26,209 INFO L87 Difference]: Start difference. First operand 5909 states and 7241 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:27,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:27,260 INFO L93 Difference]: Finished difference Result 7003 states and 8823 transitions. [2023-12-22 02:35:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:35:27,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:27,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:27,273 INFO L225 Difference]: With dead ends: 7003 [2023-12-22 02:35:27,273 INFO L226 Difference]: Without dead ends: 6027 [2023-12-22 02:35:27,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:27,276 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 714 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:27,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 740 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:27,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6027 states. [2023-12-22 02:35:28,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6027 to 6027. [2023-12-22 02:35:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6027 states, 4694 states have (on average 1.257988922028121) internal successors, (5905), 4840 states have internal predecessors, (5905), 619 states have call successors, (619), 510 states have call predecessors, (619), 712 states have return successors, (862), 679 states have call predecessors, (862), 616 states have call successors, (862) [2023-12-22 02:35:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6027 states to 6027 states and 7386 transitions. [2023-12-22 02:35:28,042 INFO L78 Accepts]: Start accepts. Automaton has 6027 states and 7386 transitions. Word has length 122 [2023-12-22 02:35:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:28,042 INFO L495 AbstractCegarLoop]: Abstraction has 6027 states and 7386 transitions. [2023-12-22 02:35:28,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:28,042 INFO L276 IsEmpty]: Start isEmpty. Operand 6027 states and 7386 transitions. [2023-12-22 02:35:28,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:28,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:28,045 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] [2023-12-22 02:35:28,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:28,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:28,250 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:28,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:28,250 INFO L85 PathProgramCache]: Analyzing trace with hash 226380112, now seen corresponding path program 1 times [2023-12-22 02:35:28,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:28,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671843556] [2023-12-22 02:35:28,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:28,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:28,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:28,252 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:28,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-22 02:35:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:28,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:28,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:28,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:28,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:28,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671843556] [2023-12-22 02:35:28,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671843556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:28,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:28,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:28,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446411530] [2023-12-22 02:35:28,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:28,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:28,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:28,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:28,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:28,412 INFO L87 Difference]: Start difference. First operand 6027 states and 7386 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:29,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:29,556 INFO L93 Difference]: Finished difference Result 7239 states and 9113 transitions. [2023-12-22 02:35:29,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:35:29,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:29,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:29,569 INFO L225 Difference]: With dead ends: 7239 [2023-12-22 02:35:29,569 INFO L226 Difference]: Without dead ends: 6145 [2023-12-22 02:35:29,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:29,572 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 707 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:29,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 733 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:35:29,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2023-12-22 02:35:30,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 6145. [2023-12-22 02:35:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 4806 states have (on average 1.2571785268414482) internal successors, (6042), 4952 states have internal predecessors, (6042), 621 states have call successors, (621), 514 states have call predecessors, (621), 716 states have return successors, (864), 681 states have call predecessors, (864), 618 states have call successors, (864) [2023-12-22 02:35:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 7527 transitions. [2023-12-22 02:35:30,262 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 7527 transitions. Word has length 122 [2023-12-22 02:35:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:30,262 INFO L495 AbstractCegarLoop]: Abstraction has 6145 states and 7527 transitions. [2023-12-22 02:35:30,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 7527 transitions. [2023-12-22 02:35:30,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:30,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:30,264 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] [2023-12-22 02:35:30,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:30,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:30,470 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:30,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2042600623, now seen corresponding path program 1 times [2023-12-22 02:35:30,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:30,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116873847] [2023-12-22 02:35:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:30,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:30,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:30,472 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:30,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-22 02:35:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:30,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:30,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:30,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:30,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:30,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116873847] [2023-12-22 02:35:30,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116873847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:30,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:30,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:30,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003723579] [2023-12-22 02:35:30,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:30,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:30,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:30,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:30,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:30,637 INFO L87 Difference]: Start difference. First operand 6145 states and 7527 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:31,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:31,847 INFO L93 Difference]: Finished difference Result 7475 states and 9395 transitions. [2023-12-22 02:35:31,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:35:31,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:31,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:31,859 INFO L225 Difference]: With dead ends: 7475 [2023-12-22 02:35:31,859 INFO L226 Difference]: Without dead ends: 6263 [2023-12-22 02:35:31,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:31,862 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 700 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:31,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 726 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:35:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2023-12-22 02:35:32,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 6263. [2023-12-22 02:35:32,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6263 states, 4918 states have (on average 1.2555917039446929) internal successors, (6175), 5064 states have internal predecessors, (6175), 623 states have call successors, (623), 518 states have call predecessors, (623), 720 states have return successors, (866), 683 states have call predecessors, (866), 620 states have call successors, (866) [2023-12-22 02:35:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6263 states to 6263 states and 7664 transitions. [2023-12-22 02:35:32,579 INFO L78 Accepts]: Start accepts. Automaton has 6263 states and 7664 transitions. Word has length 122 [2023-12-22 02:35:32,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:32,579 INFO L495 AbstractCegarLoop]: Abstraction has 6263 states and 7664 transitions. [2023-12-22 02:35:32,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 6263 states and 7664 transitions. [2023-12-22 02:35:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:32,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:32,582 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] [2023-12-22 02:35:32,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:32,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:32,786 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:32,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:32,787 INFO L85 PathProgramCache]: Analyzing trace with hash 663984657, now seen corresponding path program 1 times [2023-12-22 02:35:32,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:32,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559718332] [2023-12-22 02:35:32,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:32,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:32,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:32,789 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:32,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-22 02:35:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:32,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:32,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:32,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:32,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:32,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559718332] [2023-12-22 02:35:32,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559718332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:32,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:32,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:32,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574992114] [2023-12-22 02:35:32,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:32,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:32,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:32,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:32,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:32,951 INFO L87 Difference]: Start difference. First operand 6263 states and 7664 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:34,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:34,113 INFO L93 Difference]: Finished difference Result 7711 states and 9669 transitions. [2023-12-22 02:35:34,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:35:34,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:34,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:34,126 INFO L225 Difference]: With dead ends: 7711 [2023-12-22 02:35:34,127 INFO L226 Difference]: Without dead ends: 6381 [2023-12-22 02:35:34,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:34,130 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 693 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:34,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 719 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:34,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2023-12-22 02:35:34,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 6381. [2023-12-22 02:35:34,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 5030 states have (on average 1.2532803180914514) internal successors, (6304), 5176 states have internal predecessors, (6304), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-22 02:35:34,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 7797 transitions. [2023-12-22 02:35:34,924 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 7797 transitions. Word has length 122 [2023-12-22 02:35:34,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:34,924 INFO L495 AbstractCegarLoop]: Abstraction has 6381 states and 7797 transitions. [2023-12-22 02:35:34,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:34,925 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 7797 transitions. [2023-12-22 02:35:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:34,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:34,927 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] [2023-12-22 02:35:34,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:35,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:35,132 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:35,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:35,137 INFO L85 PathProgramCache]: Analyzing trace with hash -121122478, now seen corresponding path program 1 times [2023-12-22 02:35:35,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:35,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134206734] [2023-12-22 02:35:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:35,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:35,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:35,139 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:35,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-22 02:35:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:35,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:35,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:35,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:35,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:35,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134206734] [2023-12-22 02:35:35,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134206734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:35,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:35,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:35,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132722437] [2023-12-22 02:35:35,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:35,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:35:35,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:35,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:35:35,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:35,259 INFO L87 Difference]: Start difference. First operand 6381 states and 7797 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:36,033 INFO L93 Difference]: Finished difference Result 7932 states and 9914 transitions. [2023-12-22 02:35:36,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:36,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:36,047 INFO L225 Difference]: With dead ends: 7932 [2023-12-22 02:35:36,047 INFO L226 Difference]: Without dead ends: 6485 [2023-12-22 02:35:36,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:36,051 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 74 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:36,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1347 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:36,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6485 states. [2023-12-22 02:35:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6485 to 6385. [2023-12-22 02:35:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6385 states, 5034 states have (on average 1.2499006754072308) internal successors, (6292), 5180 states have internal predecessors, (6292), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-22 02:35:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6385 states to 6385 states and 7785 transitions. [2023-12-22 02:35:36,847 INFO L78 Accepts]: Start accepts. Automaton has 6385 states and 7785 transitions. Word has length 122 [2023-12-22 02:35:36,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:36,847 INFO L495 AbstractCegarLoop]: Abstraction has 6385 states and 7785 transitions. [2023-12-22 02:35:36,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:36,847 INFO L276 IsEmpty]: Start isEmpty. Operand 6385 states and 7785 transitions. [2023-12-22 02:35:36,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:36,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:36,862 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] [2023-12-22 02:35:36,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:37,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:37,067 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:37,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:37,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1263624944, now seen corresponding path program 1 times [2023-12-22 02:35:37,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:37,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40693965] [2023-12-22 02:35:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:37,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:37,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:37,071 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:37,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-22 02:35:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:37,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:37,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:37,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:37,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:37,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40693965] [2023-12-22 02:35:37,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40693965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:37,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:37,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:37,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124025057] [2023-12-22 02:35:37,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:37,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:35:37,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:37,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:35:37,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:37,197 INFO L87 Difference]: Start difference. First operand 6385 states and 7785 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:37,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:37,961 INFO L93 Difference]: Finished difference Result 7928 states and 9874 transitions. [2023-12-22 02:35:37,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:37,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:37,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:37,974 INFO L225 Difference]: With dead ends: 7928 [2023-12-22 02:35:37,975 INFO L226 Difference]: Without dead ends: 6477 [2023-12-22 02:35:37,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:37,978 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 65 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:37,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1351 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:37,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6477 states. [2023-12-22 02:35:38,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6477 to 6389. [2023-12-22 02:35:38,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6389 states, 5038 states have (on average 1.2465263993648272) internal successors, (6280), 5184 states have internal predecessors, (6280), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-22 02:35:38,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6389 states to 6389 states and 7773 transitions. [2023-12-22 02:35:38,736 INFO L78 Accepts]: Start accepts. Automaton has 6389 states and 7773 transitions. Word has length 122 [2023-12-22 02:35:38,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:38,736 INFO L495 AbstractCegarLoop]: Abstraction has 6389 states and 7773 transitions. [2023-12-22 02:35:38,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:38,737 INFO L276 IsEmpty]: Start isEmpty. Operand 6389 states and 7773 transitions. [2023-12-22 02:35:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:38,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:38,740 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] [2023-12-22 02:35:38,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:38,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:38,945 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:38,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:38,945 INFO L85 PathProgramCache]: Analyzing trace with hash 470479506, now seen corresponding path program 1 times [2023-12-22 02:35:38,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:38,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631452256] [2023-12-22 02:35:38,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:38,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:38,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:38,947 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:38,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-22 02:35:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:39,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:39,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:39,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:39,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:39,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:39,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631452256] [2023-12-22 02:35:39,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631452256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:39,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:39,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:39,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425947717] [2023-12-22 02:35:39,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:39,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:35:39,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:39,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:35:39,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:39,054 INFO L87 Difference]: Start difference. First operand 6389 states and 7773 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:39,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:39,883 INFO L93 Difference]: Finished difference Result 8564 states and 10696 transitions. [2023-12-22 02:35:39,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:39,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:39,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:39,896 INFO L225 Difference]: With dead ends: 8564 [2023-12-22 02:35:39,896 INFO L226 Difference]: Without dead ends: 7109 [2023-12-22 02:35:39,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:39,899 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 56 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:39,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1354 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:39,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7109 states. [2023-12-22 02:35:40,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7109 to 6425. [2023-12-22 02:35:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6425 states, 5074 states have (on average 1.24477729601892) internal successors, (6316), 5220 states have internal predecessors, (6316), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-22 02:35:40,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6425 states to 6425 states and 7809 transitions. [2023-12-22 02:35:40,688 INFO L78 Accepts]: Start accepts. Automaton has 6425 states and 7809 transitions. Word has length 122 [2023-12-22 02:35:40,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:40,688 INFO L495 AbstractCegarLoop]: Abstraction has 6425 states and 7809 transitions. [2023-12-22 02:35:40,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:40,688 INFO L276 IsEmpty]: Start isEmpty. Operand 6425 states and 7809 transitions. [2023-12-22 02:35:40,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:40,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:40,693 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] [2023-12-22 02:35:40,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-12-22 02:35:40,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:40,897 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:40,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:40,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1916030000, now seen corresponding path program 1 times [2023-12-22 02:35:40,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:40,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232489755] [2023-12-22 02:35:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:40,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:40,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:40,899 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:40,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-22 02:35:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:41,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:41,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:41,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:41,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:41,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232489755] [2023-12-22 02:35:41,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232489755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:41,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:41,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:41,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672283899] [2023-12-22 02:35:41,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:41,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:35:41,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:41,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:35:41,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:41,014 INFO L87 Difference]: Start difference. First operand 6425 states and 7809 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:41,886 INFO L93 Difference]: Finished difference Result 7984 states and 9888 transitions. [2023-12-22 02:35:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:41,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:41,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:41,898 INFO L225 Difference]: With dead ends: 7984 [2023-12-22 02:35:41,898 INFO L226 Difference]: Without dead ends: 6493 [2023-12-22 02:35:41,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:41,901 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 47 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:41,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1349 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:41,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6493 states. [2023-12-22 02:35:42,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6493 to 6429. [2023-12-22 02:35:42,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6429 states, 5078 states have (on average 1.2414336352894841) internal successors, (6304), 5224 states have internal predecessors, (6304), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-22 02:35:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6429 states to 6429 states and 7797 transitions. [2023-12-22 02:35:42,633 INFO L78 Accepts]: Start accepts. Automaton has 6429 states and 7797 transitions. Word has length 122 [2023-12-22 02:35:42,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:42,633 INFO L495 AbstractCegarLoop]: Abstraction has 6429 states and 7797 transitions. [2023-12-22 02:35:42,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:42,633 INFO L276 IsEmpty]: Start isEmpty. Operand 6429 states and 7797 transitions. [2023-12-22 02:35:42,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:42,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:42,636 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] [2023-12-22 02:35:42,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-12-22 02:35:42,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:42,838 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:42,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:42,839 INFO L85 PathProgramCache]: Analyzing trace with hash 692757458, now seen corresponding path program 1 times [2023-12-22 02:35:42,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:42,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277163924] [2023-12-22 02:35:42,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:42,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:42,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:42,841 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:42,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-22 02:35:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:42,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:42,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:42,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:42,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:42,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277163924] [2023-12-22 02:35:42,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277163924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:42,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:42,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:42,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194520047] [2023-12-22 02:35:42,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:42,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:35:42,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:42,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:35:42,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:42,952 INFO L87 Difference]: Start difference. First operand 6429 states and 7797 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:43,724 INFO L93 Difference]: Finished difference Result 7980 states and 9848 transitions. [2023-12-22 02:35:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:43,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:43,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:43,740 INFO L225 Difference]: With dead ends: 7980 [2023-12-22 02:35:43,740 INFO L226 Difference]: Without dead ends: 6485 [2023-12-22 02:35:43,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:43,745 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 38 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:43,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1350 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:43,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6485 states. [2023-12-22 02:35:44,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6485 to 6433. [2023-12-22 02:35:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6433 states, 5082 states have (on average 1.2380952380952381) internal successors, (6292), 5228 states have internal predecessors, (6292), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-22 02:35:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6433 states to 6433 states and 7785 transitions. [2023-12-22 02:35:44,501 INFO L78 Accepts]: Start accepts. Automaton has 6433 states and 7785 transitions. Word has length 122 [2023-12-22 02:35:44,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:44,502 INFO L495 AbstractCegarLoop]: Abstraction has 6433 states and 7785 transitions. [2023-12-22 02:35:44,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:44,502 INFO L276 IsEmpty]: Start isEmpty. Operand 6433 states and 7785 transitions. [2023-12-22 02:35:44,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:44,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:44,505 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] [2023-12-22 02:35:44,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:44,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:44,710 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:44,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:44,710 INFO L85 PathProgramCache]: Analyzing trace with hash 894581392, now seen corresponding path program 1 times [2023-12-22 02:35:44,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:44,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296098788] [2023-12-22 02:35:44,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:44,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:44,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:44,712 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:44,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-22 02:35:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:44,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:44,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:44,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:44,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:44,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296098788] [2023-12-22 02:35:44,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296098788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:44,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:44,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:44,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217668283] [2023-12-22 02:35:44,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:44,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:35:44,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:44,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:35:44,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:44,823 INFO L87 Difference]: Start difference. First operand 6433 states and 7785 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:45,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:45,602 INFO L93 Difference]: Finished difference Result 7964 states and 9792 transitions. [2023-12-22 02:35:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:45,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:45,616 INFO L225 Difference]: With dead ends: 7964 [2023-12-22 02:35:45,616 INFO L226 Difference]: Without dead ends: 6465 [2023-12-22 02:35:45,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:45,619 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 20 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:45,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1352 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:45,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6465 states. [2023-12-22 02:35:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6465 to 6437. [2023-12-22 02:35:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6437 states, 5086 states have (on average 1.2347620920173024) internal successors, (6280), 5232 states have internal predecessors, (6280), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-22 02:35:46,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6437 states to 6437 states and 7773 transitions. [2023-12-22 02:35:46,363 INFO L78 Accepts]: Start accepts. Automaton has 6437 states and 7773 transitions. Word has length 122 [2023-12-22 02:35:46,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:46,364 INFO L495 AbstractCegarLoop]: Abstraction has 6437 states and 7773 transitions. [2023-12-22 02:35:46,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:46,364 INFO L276 IsEmpty]: Start isEmpty. Operand 6437 states and 7773 transitions. [2023-12-22 02:35:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:46,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:46,366 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] [2023-12-22 02:35:46,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2023-12-22 02:35:46,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:46,569 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:46,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:46,570 INFO L85 PathProgramCache]: Analyzing trace with hash 413501134, now seen corresponding path program 1 times [2023-12-22 02:35:46,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:46,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804427494] [2023-12-22 02:35:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:46,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:46,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:46,572 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:46,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-22 02:35:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:46,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:46,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:46,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:46,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:46,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:46,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804427494] [2023-12-22 02:35:46,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804427494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:46,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:46,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:46,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686727993] [2023-12-22 02:35:46,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:46,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:35:46,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:46,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:35:46,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:46,706 INFO L87 Difference]: Start difference. First operand 6437 states and 7773 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:47,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:47,846 INFO L93 Difference]: Finished difference Result 7960 states and 9752 transitions. [2023-12-22 02:35:47,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:47,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:47,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:47,863 INFO L225 Difference]: With dead ends: 7960 [2023-12-22 02:35:47,864 INFO L226 Difference]: Without dead ends: 6457 [2023-12-22 02:35:47,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:47,870 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 11 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:47,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1353 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:47,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2023-12-22 02:35:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 6441. [2023-12-22 02:35:48,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6441 states, 5090 states have (on average 1.231434184675835) internal successors, (6268), 5236 states have internal predecessors, (6268), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-22 02:35:48,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6441 states to 6441 states and 7761 transitions. [2023-12-22 02:35:48,785 INFO L78 Accepts]: Start accepts. Automaton has 6441 states and 7761 transitions. Word has length 122 [2023-12-22 02:35:48,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:48,787 INFO L495 AbstractCegarLoop]: Abstraction has 6441 states and 7761 transitions. [2023-12-22 02:35:48,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:48,787 INFO L276 IsEmpty]: Start isEmpty. Operand 6441 states and 7761 transitions. [2023-12-22 02:35:48,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:48,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:48,789 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] [2023-12-22 02:35:48,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:48,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:48,994 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:48,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:48,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1306987472, now seen corresponding path program 1 times [2023-12-22 02:35:48,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:48,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164186424] [2023-12-22 02:35:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:48,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:48,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:48,998 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:49,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-22 02:35:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:49,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:49,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:49,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:49,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:49,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164186424] [2023-12-22 02:35:49,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164186424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:49,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:49,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:49,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428181300] [2023-12-22 02:35:49,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:49,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:35:49,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:49,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:35:49,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:49,117 INFO L87 Difference]: Start difference. First operand 6441 states and 7761 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:49,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:49,893 INFO L93 Difference]: Finished difference Result 7956 states and 9712 transitions. [2023-12-22 02:35:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:49,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-22 02:35:49,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:49,906 INFO L225 Difference]: With dead ends: 7956 [2023-12-22 02:35:49,906 INFO L226 Difference]: Without dead ends: 6449 [2023-12-22 02:35:49,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:49,911 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 2 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:49,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1354 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:49,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6449 states. [2023-12-22 02:35:50,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6449 to 6445. [2023-12-22 02:35:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6445 states, 5094 states have (on average 1.2281115037298782) internal successors, (6256), 5240 states have internal predecessors, (6256), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-22 02:35:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6445 states to 6445 states and 7749 transitions. [2023-12-22 02:35:50,707 INFO L78 Accepts]: Start accepts. Automaton has 6445 states and 7749 transitions. Word has length 122 [2023-12-22 02:35:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:50,708 INFO L495 AbstractCegarLoop]: Abstraction has 6445 states and 7749 transitions. [2023-12-22 02:35:50,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:35:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 6445 states and 7749 transitions. [2023-12-22 02:35:50,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:35:50,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:50,712 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] [2023-12-22 02:35:50,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:50,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:50,919 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:50,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:50,922 INFO L85 PathProgramCache]: Analyzing trace with hash -64819826, now seen corresponding path program 1 times [2023-12-22 02:35:50,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:50,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621796646] [2023-12-22 02:35:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:50,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:50,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:50,924 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:50,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-22 02:35:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:51,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:51,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:51,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:51,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:51,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621796646] [2023-12-22 02:35:51,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621796646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:51,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:51,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:35:51,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587437222] [2023-12-22 02:35:51,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:51,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:51,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:51,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:51,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:51,150 INFO L87 Difference]: Start difference. First operand 6445 states and 7749 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-22 02:35:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:52,267 INFO L93 Difference]: Finished difference Result 9424 states and 11506 transitions. [2023-12-22 02:35:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:52,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 122 [2023-12-22 02:35:52,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:52,283 INFO L225 Difference]: With dead ends: 9424 [2023-12-22 02:35:52,283 INFO L226 Difference]: Without dead ends: 7913 [2023-12-22 02:35:52,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:52,287 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 353 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:52,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 809 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:52,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7913 states. [2023-12-22 02:35:53,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7913 to 7911. [2023-12-22 02:35:53,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7911 states, 6464 states have (on average 1.2312809405940595) internal successors, (7959), 6613 states have internal predecessors, (7959), 676 states have call successors, (676), 566 states have call predecessors, (676), 769 states have return successors, (920), 734 states have call predecessors, (920), 673 states have call successors, (920) [2023-12-22 02:35:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7911 states to 7911 states and 9555 transitions. [2023-12-22 02:35:53,234 INFO L78 Accepts]: Start accepts. Automaton has 7911 states and 9555 transitions. Word has length 122 [2023-12-22 02:35:53,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:53,235 INFO L495 AbstractCegarLoop]: Abstraction has 7911 states and 9555 transitions. [2023-12-22 02:35:53,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-22 02:35:53,235 INFO L276 IsEmpty]: Start isEmpty. Operand 7911 states and 9555 transitions. [2023-12-22 02:35:53,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-22 02:35:53,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:53,240 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:53,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2023-12-22 02:35:53,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:53,442 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:53,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:53,442 INFO L85 PathProgramCache]: Analyzing trace with hash 287992733, now seen corresponding path program 1 times [2023-12-22 02:35:53,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:53,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455660206] [2023-12-22 02:35:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:53,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:53,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:53,444 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:53,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-22 02:35:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:53,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:53,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-22 02:35:53,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:53,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:53,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455660206] [2023-12-22 02:35:53,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455660206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:53,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:53,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:53,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573808598] [2023-12-22 02:35:53,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:53,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:53,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:53,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:53,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:53,563 INFO L87 Difference]: Start difference. First operand 7911 states and 9555 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-22 02:35:55,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:55,366 INFO L93 Difference]: Finished difference Result 15162 states and 18241 transitions. [2023-12-22 02:35:55,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:35:55,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 145 [2023-12-22 02:35:55,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:55,386 INFO L225 Difference]: With dead ends: 15162 [2023-12-22 02:35:55,387 INFO L226 Difference]: Without dead ends: 10054 [2023-12-22 02:35:55,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-22 02:35:55,393 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 677 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:55,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 708 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:55,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10054 states. [2023-12-22 02:35:56,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10054 to 9734. [2023-12-22 02:35:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9734 states, 7798 states have (on average 1.2290330854065146) internal successors, (9584), 7983 states have internal predecessors, (9584), 896 states have call successors, (896), 755 states have call predecessors, (896), 1038 states have return successors, (1214), 997 states have call predecessors, (1214), 893 states have call successors, (1214) [2023-12-22 02:35:56,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9734 states to 9734 states and 11694 transitions. [2023-12-22 02:35:56,684 INFO L78 Accepts]: Start accepts. Automaton has 9734 states and 11694 transitions. Word has length 145 [2023-12-22 02:35:56,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:56,684 INFO L495 AbstractCegarLoop]: Abstraction has 9734 states and 11694 transitions. [2023-12-22 02:35:56,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-22 02:35:56,684 INFO L276 IsEmpty]: Start isEmpty. Operand 9734 states and 11694 transitions. [2023-12-22 02:35:56,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-22 02:35:56,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:56,689 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:56,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:56,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:56,894 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:56,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:56,894 INFO L85 PathProgramCache]: Analyzing trace with hash -668068055, now seen corresponding path program 1 times [2023-12-22 02:35:56,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:56,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275302760] [2023-12-22 02:35:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:56,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:56,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:56,896 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:56,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-22 02:35:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:57,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:57,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-22 02:35:57,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:57,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:57,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275302760] [2023-12-22 02:35:57,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275302760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:57,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:57,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:35:57,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616536882] [2023-12-22 02:35:57,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:57,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:57,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:57,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:57,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:57,183 INFO L87 Difference]: Start difference. First operand 9734 states and 11694 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:35:58,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:58,524 INFO L93 Difference]: Finished difference Result 15615 states and 19065 transitions. [2023-12-22 02:35:58,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:58,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 196 [2023-12-22 02:35:58,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:58,554 INFO L225 Difference]: With dead ends: 15615 [2023-12-22 02:35:58,554 INFO L226 Difference]: Without dead ends: 12638 [2023-12-22 02:35:58,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:58,563 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 361 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:58,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 768 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:58,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12638 states. [2023-12-22 02:35:59,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12638 to 12630. [2023-12-22 02:35:59,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12630 states, 10514 states have (on average 1.231881301122313) internal successors, (12952), 10703 states have internal predecessors, (12952), 990 states have call successors, (990), 839 states have call predecessors, (990), 1124 states have return successors, (1310), 1089 states have call predecessors, (1310), 987 states have call successors, (1310) [2023-12-22 02:35:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12630 states to 12630 states and 15252 transitions. [2023-12-22 02:35:59,926 INFO L78 Accepts]: Start accepts. Automaton has 12630 states and 15252 transitions. Word has length 196 [2023-12-22 02:35:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:59,926 INFO L495 AbstractCegarLoop]: Abstraction has 12630 states and 15252 transitions. [2023-12-22 02:35:59,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:35:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 12630 states and 15252 transitions. [2023-12-22 02:35:59,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-22 02:35:59,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:59,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:59,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2023-12-22 02:36:00,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:00,137 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:00,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:00,138 INFO L85 PathProgramCache]: Analyzing trace with hash -262406616, now seen corresponding path program 1 times [2023-12-22 02:36:00,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:00,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957722567] [2023-12-22 02:36:00,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:00,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:00,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:00,139 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:36:00,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-12-22 02:36:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:00,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:36:00,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:00,508 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-22 02:36:00,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:00,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:00,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957722567] [2023-12-22 02:36:00,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957722567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:00,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:00,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:00,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117938798] [2023-12-22 02:36:00,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:00,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:36:00,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:00,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:36:00,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:36:00,512 INFO L87 Difference]: Start difference. First operand 12630 states and 15252 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:36:02,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:02,513 INFO L93 Difference]: Finished difference Result 24469 states and 29870 transitions. [2023-12-22 02:36:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:36:02,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 196 [2023-12-22 02:36:02,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:02,542 INFO L225 Difference]: With dead ends: 24469 [2023-12-22 02:36:02,542 INFO L226 Difference]: Without dead ends: 18597 [2023-12-22 02:36:02,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:02,550 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 636 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:02,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1008 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:36:02,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18597 states. [2023-12-22 02:36:04,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18597 to 18593. [2023-12-22 02:36:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18593 states, 16106 states have (on average 1.232956662113498) internal successors, (19858), 16308 states have internal predecessors, (19858), 1181 states have call successors, (1181), 1007 states have call predecessors, (1181), 1304 states have return successors, (1537), 1280 states have call predecessors, (1537), 1178 states have call successors, (1537) [2023-12-22 02:36:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18593 states to 18593 states and 22576 transitions. [2023-12-22 02:36:04,451 INFO L78 Accepts]: Start accepts. Automaton has 18593 states and 22576 transitions. Word has length 196 [2023-12-22 02:36:04,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:04,451 INFO L495 AbstractCegarLoop]: Abstraction has 18593 states and 22576 transitions. [2023-12-22 02:36:04,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:36:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 18593 states and 22576 transitions. [2023-12-22 02:36:04,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-22 02:36:04,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:04,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:04,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2023-12-22 02:36:04,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:04,665 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:04,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:04,666 INFO L85 PathProgramCache]: Analyzing trace with hash -139124950, now seen corresponding path program 1 times [2023-12-22 02:36:04,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:04,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262587430] [2023-12-22 02:36:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:04,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:04,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:04,668 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:36:04,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-12-22 02:36:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:04,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:36:04,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-22 02:36:04,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:04,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:04,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262587430] [2023-12-22 02:36:04,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262587430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:04,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:04,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:36:04,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520520013] [2023-12-22 02:36:04,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:04,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:36:04,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:04,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:36:04,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:36:04,843 INFO L87 Difference]: Start difference. First operand 18593 states and 22576 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:36:06,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:06,290 INFO L93 Difference]: Finished difference Result 27533 states and 33577 transitions. [2023-12-22 02:36:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:36:06,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 196 [2023-12-22 02:36:06,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:06,316 INFO L225 Difference]: With dead ends: 27533 [2023-12-22 02:36:06,317 INFO L226 Difference]: Without dead ends: 15698 [2023-12-22 02:36:06,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:36:06,327 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 367 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:06,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 563 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:36:06,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15698 states. [2023-12-22 02:36:08,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15698 to 15698. [2023-12-22 02:36:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15698 states, 13394 states have (on average 1.2312229356428253) internal successors, (16491), 13591 states have internal predecessors, (16491), 1084 states have call successors, (1084), 923 states have call predecessors, (1084), 1218 states have return successors, (1426), 1185 states have call predecessors, (1426), 1081 states have call successors, (1426) [2023-12-22 02:36:08,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15698 states to 15698 states and 19001 transitions. [2023-12-22 02:36:08,059 INFO L78 Accepts]: Start accepts. Automaton has 15698 states and 19001 transitions. Word has length 196 [2023-12-22 02:36:08,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:08,059 INFO L495 AbstractCegarLoop]: Abstraction has 15698 states and 19001 transitions. [2023-12-22 02:36:08,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:36:08,059 INFO L276 IsEmpty]: Start isEmpty. Operand 15698 states and 19001 transitions. [2023-12-22 02:36:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-22 02:36:08,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:08,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:08,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2023-12-22 02:36:08,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:08,273 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:08,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:08,274 INFO L85 PathProgramCache]: Analyzing trace with hash -926651837, now seen corresponding path program 1 times [2023-12-22 02:36:08,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:08,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285275877] [2023-12-22 02:36:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:08,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:08,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:08,276 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:36:08,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-12-22 02:36:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:08,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:36:08,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-22 02:36:08,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:08,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:08,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285275877] [2023-12-22 02:36:08,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285275877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:08,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:08,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:08,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606387229] [2023-12-22 02:36:08,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:08,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:36:08,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:08,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:36:08,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:36:08,615 INFO L87 Difference]: Start difference. First operand 15698 states and 19001 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:36:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:10,784 INFO L93 Difference]: Finished difference Result 37342 states and 45508 transitions. [2023-12-22 02:36:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:36:10,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 198 [2023-12-22 02:36:10,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:10,832 INFO L225 Difference]: With dead ends: 37342 [2023-12-22 02:36:10,832 INFO L226 Difference]: Without dead ends: 28402 [2023-12-22 02:36:10,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:10,845 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 634 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:10,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1085 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:36:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28402 states. [2023-12-22 02:36:12,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28402 to 27870. [2023-12-22 02:36:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27870 states, 24859 states have (on average 1.2289713986886037) internal successors, (30551), 25173 states have internal predecessors, (30551), 1353 states have call successors, (1353), 1155 states have call predecessors, (1353), 1656 states have return successors, (1936), 1544 states have call predecessors, (1936), 1350 states have call successors, (1936) [2023-12-22 02:36:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27870 states to 27870 states and 33840 transitions. [2023-12-22 02:36:12,892 INFO L78 Accepts]: Start accepts. Automaton has 27870 states and 33840 transitions. Word has length 198 [2023-12-22 02:36:12,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:12,893 INFO L495 AbstractCegarLoop]: Abstraction has 27870 states and 33840 transitions. [2023-12-22 02:36:12,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:36:12,893 INFO L276 IsEmpty]: Start isEmpty. Operand 27870 states and 33840 transitions. [2023-12-22 02:36:12,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-22 02:36:12,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:12,903 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:12,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2023-12-22 02:36:13,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:13,108 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:13,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:13,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1399887487, now seen corresponding path program 1 times [2023-12-22 02:36:13,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:13,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801629810] [2023-12-22 02:36:13,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:13,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:13,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:13,110 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:36:13,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-12-22 02:36:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:13,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:36:13,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-22 02:36:13,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:13,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:13,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801629810] [2023-12-22 02:36:13,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801629810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:13,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:13,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:36:13,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833357008] [2023-12-22 02:36:13,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:13,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:36:13,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:13,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:36:13,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:36:13,311 INFO L87 Difference]: Start difference. First operand 27870 states and 33840 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:36:15,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:15,282 INFO L93 Difference]: Finished difference Result 48973 states and 59663 transitions. [2023-12-22 02:36:15,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:36:15,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 198 [2023-12-22 02:36:15,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:15,338 INFO L225 Difference]: With dead ends: 48973 [2023-12-22 02:36:15,338 INFO L226 Difference]: Without dead ends: 27860 [2023-12-22 02:36:15,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:36:15,356 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 365 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:15,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 562 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:36:15,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27860 states. [2023-12-22 02:36:17,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27860 to 27860. [2023-12-22 02:36:17,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27860 states, 24852 states have (on average 1.2287944632222758) internal successors, (30538), 25165 states have internal predecessors, (30538), 1350 states have call successors, (1350), 1155 states have call predecessors, (1350), 1656 states have return successors, (1932), 1541 states have call predecessors, (1932), 1347 states have call successors, (1932) [2023-12-22 02:36:17,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27860 states to 27860 states and 33820 transitions. [2023-12-22 02:36:17,397 INFO L78 Accepts]: Start accepts. Automaton has 27860 states and 33820 transitions. Word has length 198 [2023-12-22 02:36:17,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:17,397 INFO L495 AbstractCegarLoop]: Abstraction has 27860 states and 33820 transitions. [2023-12-22 02:36:17,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:36:17,397 INFO L276 IsEmpty]: Start isEmpty. Operand 27860 states and 33820 transitions. [2023-12-22 02:36:17,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-22 02:36:17,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:17,407 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:17,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2023-12-22 02:36:17,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:17,612 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:17,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:17,613 INFO L85 PathProgramCache]: Analyzing trace with hash 17859560, now seen corresponding path program 1 times [2023-12-22 02:36:17,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:17,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574320040] [2023-12-22 02:36:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:17,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:17,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:17,615 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:36:17,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2023-12-22 02:36:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:17,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:36:17,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-22 02:36:17,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:17,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:17,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574320040] [2023-12-22 02:36:17,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574320040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:17,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:17,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:17,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741378374] [2023-12-22 02:36:17,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:17,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:36:17,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:17,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:36:17,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:36:17,917 INFO L87 Difference]: Start difference. First operand 27860 states and 33820 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:36:20,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:20,946 INFO L93 Difference]: Finished difference Result 68297 states and 83282 transitions. [2023-12-22 02:36:20,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:36:20,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 200 [2023-12-22 02:36:20,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:21,040 INFO L225 Difference]: With dead ends: 68297 [2023-12-22 02:36:21,040 INFO L226 Difference]: Without dead ends: 47195 [2023-12-22 02:36:21,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:21,059 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 618 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:21,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1015 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:36:21,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47195 states. [2023-12-22 02:36:24,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47195 to 47191. [2023-12-22 02:36:24,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47191 states, 43012 states have (on average 1.2284013763600856) internal successors, (52836), 43458 states have internal predecessors, (52836), 1861 states have call successors, (1861), 1595 states have call predecessors, (1861), 2316 states have return successors, (2721), 2140 states have call predecessors, (2721), 1858 states have call successors, (2721) [2023-12-22 02:36:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47191 states to 47191 states and 57418 transitions. [2023-12-22 02:36:24,361 INFO L78 Accepts]: Start accepts. Automaton has 47191 states and 57418 transitions. Word has length 200 [2023-12-22 02:36:24,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:24,361 INFO L495 AbstractCegarLoop]: Abstraction has 47191 states and 57418 transitions. [2023-12-22 02:36:24,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:36:24,361 INFO L276 IsEmpty]: Start isEmpty. Operand 47191 states and 57418 transitions. [2023-12-22 02:36:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-22 02:36:24,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:24,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:24,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2023-12-22 02:36:24,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:24,590 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:24,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:24,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1767543702, now seen corresponding path program 1 times [2023-12-22 02:36:24,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:24,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941213307] [2023-12-22 02:36:24,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:24,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:24,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:24,678 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:36:24,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2023-12-22 02:36:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:24,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:36:24,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-22 02:36:24,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:24,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:24,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941213307] [2023-12-22 02:36:24,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941213307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:24,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:24,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:36:24,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506785999] [2023-12-22 02:36:24,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:24,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:36:24,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:24,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:36:24,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:36:24,824 INFO L87 Difference]: Start difference. First operand 47191 states and 57418 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:36:27,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:27,974 INFO L93 Difference]: Finished difference Result 87615 states and 106821 transitions. [2023-12-22 02:36:27,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:36:27,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 200 [2023-12-22 02:36:27,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:28,068 INFO L225 Difference]: With dead ends: 87615 [2023-12-22 02:36:28,068 INFO L226 Difference]: Without dead ends: 47182 [2023-12-22 02:36:28,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:36:28,097 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 363 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:28,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 561 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:36:28,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47182 states. [2023-12-22 02:36:31,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47182 to 47182. [2023-12-22 02:36:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47182 states, 43006 states have (on average 1.2283169790261823) internal successors, (52825), 43451 states have internal predecessors, (52825), 1858 states have call successors, (1858), 1595 states have call predecessors, (1858), 2316 states have return successors, (2718), 2137 states have call predecessors, (2718), 1855 states have call successors, (2718) [2023-12-22 02:36:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47182 states to 47182 states and 57401 transitions. [2023-12-22 02:36:31,775 INFO L78 Accepts]: Start accepts. Automaton has 47182 states and 57401 transitions. Word has length 200 [2023-12-22 02:36:31,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:31,775 INFO L495 AbstractCegarLoop]: Abstraction has 47182 states and 57401 transitions. [2023-12-22 02:36:31,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:36:31,775 INFO L276 IsEmpty]: Start isEmpty. Operand 47182 states and 57401 transitions. [2023-12-22 02:36:31,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-22 02:36:31,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:31,812 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 5, 5, 3, 3, 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, 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] [2023-12-22 02:36:31,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2023-12-22 02:36:32,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:32,018 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:32,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:32,019 INFO L85 PathProgramCache]: Analyzing trace with hash -4717582, now seen corresponding path program 1 times [2023-12-22 02:36:32,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:32,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735824726] [2023-12-22 02:36:32,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:32,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:32,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:32,021 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:36:32,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2023-12-22 02:36:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:32,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:36:32,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-12-22 02:36:32,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:32,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:32,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735824726] [2023-12-22 02:36:32,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735824726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:32,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:32,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 02:36:32,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142669268] [2023-12-22 02:36:32,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:32,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:36:32,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:32,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:36:32,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:36:32,151 INFO L87 Difference]: Start difference. First operand 47182 states and 57401 transitions. Second operand has 6 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-22 02:36:34,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:34,527 INFO L93 Difference]: Finished difference Result 51014 states and 62070 transitions. [2023-12-22 02:36:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:36:34,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 217 [2023-12-22 02:36:34,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:34,613 INFO L225 Difference]: With dead ends: 51014 [2023-12-22 02:36:34,613 INFO L226 Difference]: Without dead ends: 44281 [2023-12-22 02:36:34,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-22 02:36:34,631 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 32 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:34,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2224 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:36:34,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44281 states. [2023-12-22 02:36:36,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44281 to 43389. [2023-12-22 02:36:37,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43389 states, 40301 states have (on average 1.2288528820624798) internal successors, (49524), 40622 states have internal predecessors, (49524), 1363 states have call successors, (1363), 1156 states have call predecessors, (1363), 1723 states have return successors, (2039), 1611 states have call predecessors, (2039), 1360 states have call successors, (2039) [2023-12-22 02:36:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43389 states to 43389 states and 52926 transitions. [2023-12-22 02:36:37,106 INFO L78 Accepts]: Start accepts. Automaton has 43389 states and 52926 transitions. Word has length 217 [2023-12-22 02:36:37,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:37,106 INFO L495 AbstractCegarLoop]: Abstraction has 43389 states and 52926 transitions. [2023-12-22 02:36:37,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-22 02:36:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 43389 states and 52926 transitions. [2023-12-22 02:36:37,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-22 02:36:37,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:37,123 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:37,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2023-12-22 02:36:37,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:37,354 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:37,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:37,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2126466755, now seen corresponding path program 1 times [2023-12-22 02:36:37,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:37,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066308749] [2023-12-22 02:36:37,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:37,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:37,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:37,356 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:36:37,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2023-12-22 02:36:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:37,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:36:37,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-22 02:36:37,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:37,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:37,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066308749] [2023-12-22 02:36:37,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066308749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:37,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:37,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:37,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720862297] [2023-12-22 02:36:37,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:37,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:36:37,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:37,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:36:37,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:36:37,665 INFO L87 Difference]: Start difference. First operand 43389 states and 52926 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:36:41,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:41,896 INFO L93 Difference]: Finished difference Result 121053 states and 147822 transitions. [2023-12-22 02:36:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:36:41,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 202 [2023-12-22 02:36:41,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:42,074 INFO L225 Difference]: With dead ends: 121053 [2023-12-22 02:36:42,074 INFO L226 Difference]: Without dead ends: 80629 [2023-12-22 02:36:42,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:42,108 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 613 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:42,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 984 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:36:42,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80629 states. [2023-12-22 02:36:46,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80629 to 80625. [2023-12-22 02:36:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80625 states, 75270 states have (on average 1.227952703600372) internal successors, (92428), 75868 states have internal predecessors, (92428), 2334 states have call successors, (2334), 1988 states have call predecessors, (2334), 3019 states have return successors, (3590), 2770 states have call predecessors, (3590), 2331 states have call successors, (3590) [2023-12-22 02:36:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80625 states to 80625 states and 98352 transitions. [2023-12-22 02:36:46,496 INFO L78 Accepts]: Start accepts. Automaton has 80625 states and 98352 transitions. Word has length 202 [2023-12-22 02:36:46,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:46,497 INFO L495 AbstractCegarLoop]: Abstraction has 80625 states and 98352 transitions. [2023-12-22 02:36:46,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:36:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand 80625 states and 98352 transitions. [2023-12-22 02:36:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-22 02:36:46,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:46,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:46,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2023-12-22 02:36:46,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:46,728 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:46,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:46,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1681426815, now seen corresponding path program 1 times [2023-12-22 02:36:46,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:46,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754884276] [2023-12-22 02:36:46,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:46,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:46,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:46,731 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:36:46,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2023-12-22 02:36:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:47,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:36:47,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:47,018 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-22 02:36:47,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:47,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:47,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754884276] [2023-12-22 02:36:47,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754884276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:47,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:47,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:36:47,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315785514] [2023-12-22 02:36:47,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:47,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:36:47,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:47,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:36:47,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:36:47,020 INFO L87 Difference]: Start difference. First operand 80625 states and 98352 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:36:51,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:51,071 INFO L93 Difference]: Finished difference Result 158277 states and 193167 transitions. [2023-12-22 02:36:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:36:51,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 202 [2023-12-22 02:36:51,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:51,269 INFO L225 Difference]: With dead ends: 158277 [2023-12-22 02:36:51,269 INFO L226 Difference]: Without dead ends: 80617 [2023-12-22 02:36:51,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:36:51,444 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 361 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:51,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 560 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:36:51,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80617 states. [2023-12-22 02:36:55,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80617 to 80617. [2023-12-22 02:36:55,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80617 states, 75265 states have (on average 1.2279147013884275) internal successors, (92419), 75862 states have internal predecessors, (92419), 2331 states have call successors, (2331), 1988 states have call predecessors, (2331), 3019 states have return successors, (3587), 2767 states have call predecessors, (3587), 2328 states have call successors, (3587) [2023-12-22 02:36:55,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80617 states to 80617 states and 98337 transitions. [2023-12-22 02:36:55,735 INFO L78 Accepts]: Start accepts. Automaton has 80617 states and 98337 transitions. Word has length 202 [2023-12-22 02:36:55,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:55,735 INFO L495 AbstractCegarLoop]: Abstraction has 80617 states and 98337 transitions. [2023-12-22 02:36:55,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:36:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 80617 states and 98337 transitions. [2023-12-22 02:36:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-22 02:36:55,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:55,890 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:55,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2023-12-22 02:36:56,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:56,106 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:56,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:56,107 INFO L85 PathProgramCache]: Analyzing trace with hash 48144808, now seen corresponding path program 1 times [2023-12-22 02:36:56,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:56,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168061792] [2023-12-22 02:36:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:56,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:36:56,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:56,109 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:36:56,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2023-12-22 02:36:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:56,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:36:56,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-22 02:36:56,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:56,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:56,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168061792] [2023-12-22 02:36:56,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168061792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:56,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:56,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:56,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075446312] [2023-12-22 02:36:56,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:56,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:36:56,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:56,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:36:56,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:36:56,450 INFO L87 Difference]: Start difference. First operand 80617 states and 98337 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)