/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.10.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 02:35:27,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 02:35:27,536 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 02:35:27,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 02:35:27,540 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 02:35:27,569 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 02:35:27,569 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 02:35:27,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 02:35:27,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 02:35:27,573 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 02:35:27,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 02:35:27,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 02:35:27,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 02:35:27,575 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 02:35:27,575 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 02:35:27,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 02:35:27,576 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 02:35:27,576 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 02:35:27,576 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 02:35:27,577 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 02:35:27,577 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 02:35:27,577 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 02:35:27,578 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 02:35:27,578 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 02:35:27,578 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 02:35:27,578 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 02:35:27,578 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 02:35:27,578 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 02:35:27,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 02:35:27,579 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 02:35:27,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 02:35:27,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 02:35:27,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 02:35:27,580 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 02:35:27,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:35:27,580 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 02:35:27,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 02:35:27,580 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 02:35:27,580 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 02:35:27,580 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 02:35:27,581 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 02:35:27,581 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 02:35:27,581 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 02:35:27,581 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 02:35:27,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 02:35:27,581 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 02:35:27,581 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 02:35:27,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 02:35:27,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 02:35:27,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 02:35:27,793 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 02:35:27,793 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 02:35:27,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2023-12-22 02:35:28,872 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 02:35:29,091 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 02:35:29,092 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2023-12-22 02:35:29,108 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11005af3c/257317161dde49298d37f9289b12bf11/FLAG03ffee802 [2023-12-22 02:35:29,121 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11005af3c/257317161dde49298d37f9289b12bf11 [2023-12-22 02:35:29,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 02:35:29,124 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 02:35:29,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 02:35:29,125 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 02:35:29,128 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 02:35:29,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:35:29" (1/1) ... [2023-12-22 02:35:29,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@138224af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29, skipping insertion in model container [2023-12-22 02:35:29,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:35:29" (1/1) ... [2023-12-22 02:35:29,184 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 02:35:29,309 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.10.cil-1.c[914,927] [2023-12-22 02:35:29,344 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.10.cil-1.c[7115,7128] [2023-12-22 02:35:29,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:35:29,419 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 02:35:29,427 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.10.cil-1.c[914,927] [2023-12-22 02:35:29,441 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.10.cil-1.c[7115,7128] [2023-12-22 02:35:29,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:35:29,506 INFO L206 MainTranslator]: Completed translation [2023-12-22 02:35:29,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29 WrapperNode [2023-12-22 02:35:29,507 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 02:35:29,508 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 02:35:29,509 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 02:35:29,509 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 02:35:29,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29" (1/1) ... [2023-12-22 02:35:29,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29" (1/1) ... [2023-12-22 02:35:29,572 INFO L138 Inliner]: procedures = 74, calls = 88, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 918 [2023-12-22 02:35:29,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 02:35:29,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 02:35:29,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 02:35:29,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 02:35:29,583 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29" (1/1) ... [2023-12-22 02:35:29,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29" (1/1) ... [2023-12-22 02:35:29,589 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29" (1/1) ... [2023-12-22 02:35:29,603 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 02:35:29,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29" (1/1) ... [2023-12-22 02:35:29,604 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29" (1/1) ... [2023-12-22 02:35:29,631 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29" (1/1) ... [2023-12-22 02:35:29,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29" (1/1) ... [2023-12-22 02:35:29,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29" (1/1) ... [2023-12-22 02:35:29,653 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29" (1/1) ... [2023-12-22 02:35:29,664 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 02:35:29,665 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 02:35:29,665 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 02:35:29,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 02:35:29,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29" (1/1) ... [2023-12-22 02:35:29,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:35:29,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 02:35:29,718 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 02:35:29,754 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 02:35:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 02:35:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-22 02:35:29,764 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-22 02:35:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-22 02:35:29,765 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-22 02:35:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-22 02:35:29,765 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-22 02:35:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-22 02:35:29,765 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-22 02:35:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-22 02:35:29,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-22 02:35:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-22 02:35:29,766 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-22 02:35:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-22 02:35:29,766 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-22 02:35:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-22 02:35:29,766 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-22 02:35:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 02:35:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-22 02:35:29,767 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-22 02:35:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-22 02:35:29,767 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-22 02:35:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-22 02:35:29,768 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-22 02:35:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-22 02:35:29,769 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-22 02:35:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-22 02:35:29,769 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-22 02:35:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 02:35:29,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 02:35:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-22 02:35:29,769 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-22 02:35:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-22 02:35:29,769 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-22 02:35:29,897 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 02:35:29,899 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 02:35:30,639 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 02:35:30,703 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 02:35:30,704 INFO L309 CfgBuilder]: Removed 17 assume(true) statements. [2023-12-22 02:35:30,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:35:30 BoogieIcfgContainer [2023-12-22 02:35:30,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 02:35:30,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 02:35:30,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 02:35:30,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 02:35:30,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:35:29" (1/3) ... [2023-12-22 02:35:30,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b182fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:35:30, skipping insertion in model container [2023-12-22 02:35:30,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:35:29" (2/3) ... [2023-12-22 02:35:30,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b182fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:35:30, skipping insertion in model container [2023-12-22 02:35:30,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:35:30" (3/3) ... [2023-12-22 02:35:30,710 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2023-12-22 02:35:30,723 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 02:35:30,723 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 02:35:30,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 02:35:30,789 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;@1f36e3f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 02:35:30,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 02:35:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 401 states, 343 states have (on average 1.7113702623906706) internal successors, (587), 351 states have internal predecessors, (587), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-22 02:35:30,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:35:30,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:30,811 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 02:35:30,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:30,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:30,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1105280806, now seen corresponding path program 1 times [2023-12-22 02:35:30,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:30,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982056397] [2023-12-22 02:35:30,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:30,829 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 02:35:30,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:30,833 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 02:35:30,866 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 02:35:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:30,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 02:35:30,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:31,026 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 02:35:31,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:31,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:31,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982056397] [2023-12-22 02:35:31,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982056397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:31,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:31,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-22 02:35:31,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148125149] [2023-12-22 02:35:31,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:31,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:31,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:31,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:31,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:31,054 INFO L87 Difference]: Start difference. First operand has 401 states, 343 states have (on average 1.7113702623906706) internal successors, (587), 351 states have internal predecessors, (587), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) 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 02:35:31,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:31,985 INFO L93 Difference]: Finished difference Result 873 states and 1445 transitions. [2023-12-22 02:35:31,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:35:31,988 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 02:35:31,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:31,998 INFO L225 Difference]: With dead ends: 873 [2023-12-22 02:35:31,999 INFO L226 Difference]: Without dead ends: 490 [2023-12-22 02:35:32,003 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 02:35:32,006 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 412 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:32,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1189 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 02:35:32,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-22 02:35:32,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 483. [2023-12-22 02:35:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 408 states have (on average 1.5759803921568627) internal successors, (643), 415 states have internal predecessors, (643), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-22 02:35:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 746 transitions. [2023-12-22 02:35:32,066 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 746 transitions. Word has length 58 [2023-12-22 02:35:32,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:32,066 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 746 transitions. [2023-12-22 02:35:32,066 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 02:35:32,066 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 746 transitions. [2023-12-22 02:35:32,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:35:32,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:32,069 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 02:35:32,076 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 02:35:32,273 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 02:35:32,274 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:32,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:32,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1239514470, now seen corresponding path program 1 times [2023-12-22 02:35:32,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:32,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186850579] [2023-12-22 02:35:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:32,276 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 02:35:32,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:32,277 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 02:35:32,279 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 02:35:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:32,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:35:32,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:32,432 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 02:35:32,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:32,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186850579] [2023-12-22 02:35:32,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186850579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:32,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:32,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-22 02:35:32,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594355958] [2023-12-22 02:35:32,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:32,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:32,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:32,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:32,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:32,437 INFO L87 Difference]: Start difference. First operand 483 states and 746 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 02:35:33,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:33,193 INFO L93 Difference]: Finished difference Result 842 states and 1267 transitions. [2023-12-22 02:35:33,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:35:33,194 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 02:35:33,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:33,198 INFO L225 Difference]: With dead ends: 842 [2023-12-22 02:35:33,198 INFO L226 Difference]: Without dead ends: 678 [2023-12-22 02:35:33,199 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 02:35:33,200 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 401 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:33,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 1185 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 02:35:33,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2023-12-22 02:35:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 670. [2023-12-22 02:35:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 551 states have (on average 1.5263157894736843) internal successors, (841), 566 states have internal predecessors, (841), 73 states have call successors, (73), 36 states have call predecessors, (73), 44 states have return successors, (94), 72 states have call predecessors, (94), 69 states have call successors, (94) [2023-12-22 02:35:33,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1008 transitions. [2023-12-22 02:35:33,235 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1008 transitions. Word has length 58 [2023-12-22 02:35:33,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:33,236 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1008 transitions. [2023-12-22 02:35:33,236 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 02:35:33,236 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1008 transitions. [2023-12-22 02:35:33,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:35:33,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:33,238 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 02:35:33,260 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 02:35:33,443 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 02:35:33,444 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:33,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:33,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1111460058, now seen corresponding path program 1 times [2023-12-22 02:35:33,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:33,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934342353] [2023-12-22 02:35:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:33,445 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 02:35:33,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:33,446 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 02:35:33,463 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 02:35:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:33,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:35:33,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:33,565 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 02:35:33,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:33,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:33,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934342353] [2023-12-22 02:35:33,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934342353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:33,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:33,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 02:35:33,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619444561] [2023-12-22 02:35:33,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:33,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:35:33,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:33,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:35:33,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:33,569 INFO L87 Difference]: Start difference. First operand 670 states and 1008 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 02:35:33,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:33,727 INFO L93 Difference]: Finished difference Result 1025 states and 1505 transitions. [2023-12-22 02:35:33,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:35:33,728 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 02:35:33,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:33,731 INFO L225 Difference]: With dead ends: 1025 [2023-12-22 02:35:33,731 INFO L226 Difference]: Without dead ends: 688 [2023-12-22 02:35:33,732 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 02:35:33,733 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 6 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2865 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:33,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2865 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:33,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-12-22 02:35:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 678. [2023-12-22 02:35:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 557 states have (on average 1.5170556552962298) internal successors, (845), 572 states have internal predecessors, (845), 73 states have call successors, (73), 36 states have call predecessors, (73), 46 states have return successors, (96), 74 states have call predecessors, (96), 69 states have call successors, (96) [2023-12-22 02:35:33,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1014 transitions. [2023-12-22 02:35:33,772 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1014 transitions. Word has length 58 [2023-12-22 02:35:33,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:33,773 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1014 transitions. [2023-12-22 02:35:33,773 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 02:35:33,773 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1014 transitions. [2023-12-22 02:35:33,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:35:33,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:33,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:33,782 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 (4)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:33,980 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 02:35:33,982 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:33,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1132523240, now seen corresponding path program 1 times [2023-12-22 02:35:33,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:33,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191620432] [2023-12-22 02:35:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:33,983 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 02:35:33,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:33,986 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 02:35:33,987 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 02:35:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:34,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:35:34,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:34,096 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 02:35:34,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:34,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:34,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191620432] [2023-12-22 02:35:34,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191620432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:34,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:34,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 02:35:34,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164134796] [2023-12-22 02:35:34,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:34,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:35:34,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:34,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:35:34,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:34,098 INFO L87 Difference]: Start difference. First operand 678 states and 1014 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 02:35:34,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:34,271 INFO L93 Difference]: Finished difference Result 1035 states and 1507 transitions. [2023-12-22 02:35:34,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:35:34,271 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 02:35:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:34,274 INFO L225 Difference]: With dead ends: 1035 [2023-12-22 02:35:34,274 INFO L226 Difference]: Without dead ends: 690 [2023-12-22 02:35:34,275 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 02:35:34,276 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 3 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:34,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2870 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2023-12-22 02:35:34,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 686. [2023-12-22 02:35:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 563 states have (on average 1.507992895204263) internal successors, (849), 578 states have internal predecessors, (849), 73 states have call successors, (73), 36 states have call predecessors, (73), 48 states have return successors, (98), 76 states have call predecessors, (98), 69 states have call successors, (98) [2023-12-22 02:35:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1020 transitions. [2023-12-22 02:35:34,329 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1020 transitions. Word has length 58 [2023-12-22 02:35:34,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:34,329 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 1020 transitions. [2023-12-22 02:35:34,329 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 02:35:34,329 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1020 transitions. [2023-12-22 02:35:34,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:35:34,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:34,331 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 02:35:34,336 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 02:35:34,534 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 02:35:34,535 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:34,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:34,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1070483626, now seen corresponding path program 1 times [2023-12-22 02:35:34,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:34,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471848026] [2023-12-22 02:35:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:34,536 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 02:35:34,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:34,537 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 02:35:34,539 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 02:35:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:34,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:34,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:34,691 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 02:35:34,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:34,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:34,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471848026] [2023-12-22 02:35:34,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471848026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:34,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:34,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:34,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055793889] [2023-12-22 02:35:34,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:34,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:35:34,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:34,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:35:34,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:34,694 INFO L87 Difference]: Start difference. First operand 686 states and 1020 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 02:35:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:35,179 INFO L93 Difference]: Finished difference Result 1384 states and 1967 transitions. [2023-12-22 02:35:35,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:35:35,180 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 02:35:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:35,185 INFO L225 Difference]: With dead ends: 1384 [2023-12-22 02:35:35,185 INFO L226 Difference]: Without dead ends: 1035 [2023-12-22 02:35:35,186 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 02:35:35,186 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 848 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:35,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 618 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:35,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2023-12-22 02:35:35,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1031. [2023-12-22 02:35:35,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 818 states have (on average 1.4474327628361858) internal successors, (1184), 848 states have internal predecessors, (1184), 119 states have call successors, (119), 64 states have call predecessors, (119), 92 states have return successors, (183), 127 states have call predecessors, (183), 115 states have call successors, (183) [2023-12-22 02:35:35,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1486 transitions. [2023-12-22 02:35:35,224 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1486 transitions. Word has length 58 [2023-12-22 02:35:35,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:35,224 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1486 transitions. [2023-12-22 02:35:35,224 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 02:35:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1486 transitions. [2023-12-22 02:35:35,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-22 02:35:35,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:35,226 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 02:35:35,232 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 02:35:35,440 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 02:35:35,441 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:35,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:35,441 INFO L85 PathProgramCache]: Analyzing trace with hash -602571652, now seen corresponding path program 1 times [2023-12-22 02:35:35,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:35,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776318676] [2023-12-22 02:35:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:35,442 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 02:35:35,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:35,443 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 02:35:35,453 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 02:35:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:35,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:35,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:35,570 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 02:35:35,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:35,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:35,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776318676] [2023-12-22 02:35:35,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776318676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:35,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:35,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:35:35,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141185071] [2023-12-22 02:35:35,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:35,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:35,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:35,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:35,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:35,573 INFO L87 Difference]: Start difference. First operand 1031 states and 1486 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 02:35:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:35,711 INFO L93 Difference]: Finished difference Result 2345 states and 3257 transitions. [2023-12-22 02:35:35,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:35,711 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 02:35:35,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:35,717 INFO L225 Difference]: With dead ends: 2345 [2023-12-22 02:35:35,717 INFO L226 Difference]: Without dead ends: 1663 [2023-12-22 02:35:35,719 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 02:35:35,719 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 560 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:35,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 681 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:35,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2023-12-22 02:35:35,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1619. [2023-12-22 02:35:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1258 states have (on average 1.3879173290937996) internal successors, (1746), 1310 states have internal predecessors, (1746), 185 states have call successors, (185), 120 states have call predecessors, (185), 174 states have return successors, (297), 197 states have call predecessors, (297), 181 states have call successors, (297) [2023-12-22 02:35:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2228 transitions. [2023-12-22 02:35:35,801 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2228 transitions. Word has length 59 [2023-12-22 02:35:35,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:35,802 INFO L495 AbstractCegarLoop]: Abstraction has 1619 states and 2228 transitions. [2023-12-22 02:35:35,802 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 02:35:35,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2228 transitions. [2023-12-22 02:35:35,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-22 02:35:35,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:35,804 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 02:35:35,812 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 02:35:36,008 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 02:35:36,008 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:36,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:36,009 INFO L85 PathProgramCache]: Analyzing trace with hash 363136743, now seen corresponding path program 1 times [2023-12-22 02:35:36,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:36,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936572143] [2023-12-22 02:35:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:36,010 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 02:35:36,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:36,012 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 02:35:36,013 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 02:35:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:36,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:36,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:36,157 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 02:35:36,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:36,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:36,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936572143] [2023-12-22 02:35:36,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936572143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:36,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:36,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:35:36,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403979827] [2023-12-22 02:35:36,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:36,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:36,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:36,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:36,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:36,160 INFO L87 Difference]: Start difference. First operand 1619 states and 2228 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 02:35:36,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:36,331 INFO L93 Difference]: Finished difference Result 4035 states and 5397 transitions. [2023-12-22 02:35:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:36,332 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 02:35:36,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:36,345 INFO L225 Difference]: With dead ends: 4035 [2023-12-22 02:35:36,345 INFO L226 Difference]: Without dead ends: 2737 [2023-12-22 02:35:36,350 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 02:35:36,351 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 63 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:36,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1117 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:36,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2023-12-22 02:35:36,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2705. [2023-12-22 02:35:36,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2076 states have (on average 1.342485549132948) internal successors, (2787), 2149 states have internal predecessors, (2787), 305 states have call successors, (305), 232 states have call predecessors, (305), 322 states have return successors, (475), 328 states have call predecessors, (475), 301 states have call successors, (475) [2023-12-22 02:35:36,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3567 transitions. [2023-12-22 02:35:36,510 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3567 transitions. Word has length 60 [2023-12-22 02:35:36,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:36,511 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 3567 transitions. [2023-12-22 02:35:36,511 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 02:35:36,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3567 transitions. [2023-12-22 02:35:36,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 02:35:36,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:36,512 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 02:35:36,519 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 02:35:36,716 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 02:35:36,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:36,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:36,717 INFO L85 PathProgramCache]: Analyzing trace with hash 952697062, now seen corresponding path program 1 times [2023-12-22 02:35:36,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:36,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363623605] [2023-12-22 02:35:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:36,718 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 02:35:36,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:36,720 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 02:35:36,753 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 02:35:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:36,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:36,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:36,866 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 02:35:36,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:36,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:36,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363623605] [2023-12-22 02:35:36,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363623605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:36,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:36,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:35:36,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914693533] [2023-12-22 02:35:36,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:36,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:36,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:36,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:36,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:36,868 INFO L87 Difference]: Start difference. First operand 2705 states and 3567 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 02:35:37,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:37,059 INFO L93 Difference]: Finished difference Result 5641 states and 7305 transitions. [2023-12-22 02:35:37,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:37,059 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 02:35:37,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:37,072 INFO L225 Difference]: With dead ends: 5641 [2023-12-22 02:35:37,073 INFO L226 Difference]: Without dead ends: 3265 [2023-12-22 02:35:37,078 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 02:35:37,079 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 555 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:37,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 681 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:37,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2023-12-22 02:35:37,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 3221. [2023-12-22 02:35:37,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3221 states, 2464 states have (on average 1.322646103896104) internal successors, (3259), 2545 states have internal predecessors, (3259), 369 states have call successors, (369), 288 states have call predecessors, (369), 386 states have return successors, (558), 392 states have call predecessors, (558), 365 states have call successors, (558) [2023-12-22 02:35:37,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 4186 transitions. [2023-12-22 02:35:37,309 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 4186 transitions. Word has length 66 [2023-12-22 02:35:37,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:37,310 INFO L495 AbstractCegarLoop]: Abstraction has 3221 states and 4186 transitions. [2023-12-22 02:35:37,310 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 02:35:37,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 4186 transitions. [2023-12-22 02:35:37,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-22 02:35:37,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:37,312 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 02:35:37,319 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 02:35:37,516 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 02:35:37,516 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:37,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:37,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1047983509, now seen corresponding path program 1 times [2023-12-22 02:35:37,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:37,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414274770] [2023-12-22 02:35:37,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:37,518 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 02:35:37,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:37,519 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 02:35:37,524 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 02:35:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:37,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:37,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:37,623 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 02:35:37,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:37,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:37,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414274770] [2023-12-22 02:35:37,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414274770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:37,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:37,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:37,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471293870] [2023-12-22 02:35:37,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:37,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:35:37,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:35:37,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:37,626 INFO L87 Difference]: Start difference. First operand 3221 states and 4186 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 02:35:37,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:37,976 INFO L93 Difference]: Finished difference Result 3841 states and 4959 transitions. [2023-12-22 02:35:37,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:37,976 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 02:35:37,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:37,990 INFO L225 Difference]: With dead ends: 3841 [2023-12-22 02:35:37,990 INFO L226 Difference]: Without dead ends: 3838 [2023-12-22 02:35:37,991 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 02:35:37,993 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 1145 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:37,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 664 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:35:37,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3838 states. [2023-12-22 02:35:38,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3838 to 3804. [2023-12-22 02:35:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3804 states, 2902 states have (on average 1.3121984838042728) internal successors, (3808), 2997 states have internal predecessors, (3808), 434 states have call successors, (434), 344 states have call predecessors, (434), 466 states have return successors, (661), 467 states have call predecessors, (661), 431 states have call successors, (661) [2023-12-22 02:35:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 4903 transitions. [2023-12-22 02:35:38,253 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 4903 transitions. Word has length 67 [2023-12-22 02:35:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:38,254 INFO L495 AbstractCegarLoop]: Abstraction has 3804 states and 4903 transitions. [2023-12-22 02:35:38,255 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 02:35:38,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 4903 transitions. [2023-12-22 02:35:38,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-22 02:35:38,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:38,258 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 02:35:38,265 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 02:35:38,462 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 02:35:38,463 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:38,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1870924240, now seen corresponding path program 1 times [2023-12-22 02:35:38,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:38,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876622379] [2023-12-22 02:35:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:38,464 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 02:35:38,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:38,467 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 02:35:38,470 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 02:35:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:38,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:35:38,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:38,768 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 02:35:38,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:35:38,857 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 02:35:38,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:38,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876622379] [2023-12-22 02:35:38,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876622379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:35:38,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:35:38,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2023-12-22 02:35:38,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64954234] [2023-12-22 02:35:38,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:35:38,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 02:35:38,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:38,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 02:35:38,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:35:38,859 INFO L87 Difference]: Start difference. First operand 3804 states and 4903 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 02:35:39,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:39,695 INFO L93 Difference]: Finished difference Result 8343 states and 10659 transitions. [2023-12-22 02:35:39,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:35:39,696 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 02:35:39,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:39,732 INFO L225 Difference]: With dead ends: 8343 [2023-12-22 02:35:39,732 INFO L226 Difference]: Without dead ends: 8340 [2023-12-22 02:35:39,736 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 02:35:39,737 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 1387 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:39,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 2689 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:39,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8340 states. [2023-12-22 02:35:40,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8340 to 6158. [2023-12-22 02:35:40,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6158 states, 4676 states have (on average 1.30196749358426) internal successors, (6088), 4837 states have internal predecessors, (6088), 698 states have call successors, (698), 568 states have call predecessors, (698), 782 states have return successors, (1095), 757 states have call predecessors, (1095), 695 states have call successors, (1095) [2023-12-22 02:35:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6158 states to 6158 states and 7881 transitions. [2023-12-22 02:35:40,176 INFO L78 Accepts]: Start accepts. Automaton has 6158 states and 7881 transitions. Word has length 68 [2023-12-22 02:35:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:40,177 INFO L495 AbstractCegarLoop]: Abstraction has 6158 states and 7881 transitions. [2023-12-22 02:35:40,177 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 02:35:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6158 states and 7881 transitions. [2023-12-22 02:35:40,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-22 02:35:40,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:40,179 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 02:35:40,185 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 02:35:40,383 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 02:35:40,383 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:40,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:40,384 INFO L85 PathProgramCache]: Analyzing trace with hash -600934869, now seen corresponding path program 2 times [2023-12-22 02:35:40,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:40,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520364268] [2023-12-22 02:35:40,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 02:35:40,385 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 02:35:40,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:40,386 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 02:35:40,390 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 02:35:40,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-22 02:35:40,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 02:35:40,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:40,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:40,479 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 02:35:40,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:40,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:40,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520364268] [2023-12-22 02:35:40,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520364268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:40,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:40,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:35:40,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442771446] [2023-12-22 02:35:40,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:40,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:40,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:40,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:40,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:40,481 INFO L87 Difference]: Start difference. First operand 6158 states and 7881 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 02:35:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:40,781 INFO L93 Difference]: Finished difference Result 9129 states and 11737 transitions. [2023-12-22 02:35:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:40,781 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 02:35:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:40,795 INFO L225 Difference]: With dead ends: 9129 [2023-12-22 02:35:40,795 INFO L226 Difference]: Without dead ends: 3826 [2023-12-22 02:35:40,803 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 02:35:40,804 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 591 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:40,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 739 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:40,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2023-12-22 02:35:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 3802. [2023-12-22 02:35:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3802 states, 2904 states have (on average 1.2954545454545454) internal successors, (3762), 2995 states have internal predecessors, (3762), 434 states have call successors, (434), 344 states have call predecessors, (434), 462 states have return successors, (629), 467 states have call predecessors, (629), 431 states have call successors, (629) [2023-12-22 02:35:41,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3802 states to 3802 states and 4825 transitions. [2023-12-22 02:35:41,030 INFO L78 Accepts]: Start accepts. Automaton has 3802 states and 4825 transitions. Word has length 71 [2023-12-22 02:35:41,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:41,030 INFO L495 AbstractCegarLoop]: Abstraction has 3802 states and 4825 transitions. [2023-12-22 02:35:41,030 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 02:35:41,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3802 states and 4825 transitions. [2023-12-22 02:35:41,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-22 02:35:41,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:41,032 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 02:35:41,038 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 (12)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:41,236 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 02:35:41,237 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:41,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:41,237 INFO L85 PathProgramCache]: Analyzing trace with hash -392745723, now seen corresponding path program 1 times [2023-12-22 02:35:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:41,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684008355] [2023-12-22 02:35:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:41,238 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 02:35:41,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:41,239 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 02:35:41,274 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 02:35:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:41,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:41,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:41,338 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 02:35:41,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:41,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:41,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684008355] [2023-12-22 02:35:41,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684008355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:41,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:41,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:35:41,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940748076] [2023-12-22 02:35:41,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:41,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:41,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:41,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:41,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:41,340 INFO L87 Difference]: Start difference. First operand 3802 states and 4825 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 02:35:41,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:41,758 INFO L93 Difference]: Finished difference Result 10239 states and 12784 transitions. [2023-12-22 02:35:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:41,759 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 02:35:41,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:41,783 INFO L225 Difference]: With dead ends: 10239 [2023-12-22 02:35:41,783 INFO L226 Difference]: Without dead ends: 5450 [2023-12-22 02:35:41,792 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 02:35:41,793 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 84 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:41,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1212 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5450 states. [2023-12-22 02:35:42,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5450 to 5450. [2023-12-22 02:35:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5450 states, 4114 states have (on average 1.2715119105493438) internal successors, (5231), 4250 states have internal predecessors, (5231), 632 states have call successors, (632), 512 states have call predecessors, (632), 702 states have return successors, (953), 692 states have call predecessors, (953), 629 states have call successors, (953) [2023-12-22 02:35:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 6816 transitions. [2023-12-22 02:35:42,110 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 6816 transitions. Word has length 76 [2023-12-22 02:35:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:42,110 INFO L495 AbstractCegarLoop]: Abstraction has 5450 states and 6816 transitions. [2023-12-22 02:35:42,110 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 02:35:42,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 6816 transitions. [2023-12-22 02:35:42,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-22 02:35:42,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:42,113 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 02:35:42,116 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 (13)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:42,316 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 02:35:42,317 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:42,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:42,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1464554121, now seen corresponding path program 1 times [2023-12-22 02:35:42,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:42,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116542468] [2023-12-22 02:35:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:42,318 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 02:35:42,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:42,319 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 02:35:42,320 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 02:35:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:42,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:42,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:42,445 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 02:35:42,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:42,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:42,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116542468] [2023-12-22 02:35:42,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116542468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:42,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:42,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:42,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506598183] [2023-12-22 02:35:42,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:42,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:35:42,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:42,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:35:42,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:42,448 INFO L87 Difference]: Start difference. First operand 5450 states and 6816 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 02:35:43,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:43,216 INFO L93 Difference]: Finished difference Result 10597 states and 13148 transitions. [2023-12-22 02:35:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:35:43,217 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 02:35:43,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:43,233 INFO L225 Difference]: With dead ends: 10597 [2023-12-22 02:35:43,233 INFO L226 Difference]: Without dead ends: 5480 [2023-12-22 02:35:43,242 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 02:35:43,242 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 828 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:43,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 598 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:35:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5480 states. [2023-12-22 02:35:43,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5480 to 5480. [2023-12-22 02:35:43,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5480 states, 4129 states have (on average 1.2545410511019617) internal successors, (5180), 4280 states have internal predecessors, (5180), 632 states have call successors, (632), 512 states have call predecessors, (632), 717 states have return successors, (953), 692 states have call predecessors, (953), 629 states have call successors, (953) [2023-12-22 02:35:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5480 states to 5480 states and 6765 transitions. [2023-12-22 02:35:43,575 INFO L78 Accepts]: Start accepts. Automaton has 5480 states and 6765 transitions. Word has length 85 [2023-12-22 02:35:43,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:43,575 INFO L495 AbstractCegarLoop]: Abstraction has 5480 states and 6765 transitions. [2023-12-22 02:35:43,575 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 02:35:43,575 INFO L276 IsEmpty]: Start isEmpty. Operand 5480 states and 6765 transitions. [2023-12-22 02:35:43,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-22 02:35:43,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:43,578 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 02:35:43,583 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 02:35:43,783 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 02:35:43,783 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:43,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:43,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1057621740, now seen corresponding path program 1 times [2023-12-22 02:35:43,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:43,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494640105] [2023-12-22 02:35:43,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:43,785 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 02:35:43,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:43,786 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 02:35:43,787 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 02:35:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:43,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:43,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:43,928 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 02:35:43,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:43,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:43,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494640105] [2023-12-22 02:35:43,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494640105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:43,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:43,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:35:43,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584474927] [2023-12-22 02:35:43,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:43,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:43,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:43,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:43,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:43,930 INFO L87 Difference]: Start difference. First operand 5480 states and 6765 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 02:35:44,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:44,263 INFO L93 Difference]: Finished difference Result 10386 states and 12703 transitions. [2023-12-22 02:35:44,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:44,263 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 02:35:44,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:44,279 INFO L225 Difference]: With dead ends: 10386 [2023-12-22 02:35:44,279 INFO L226 Difference]: Without dead ends: 5229 [2023-12-22 02:35:44,311 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 02:35:44,312 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 91 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:44,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1203 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:44,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5229 states. [2023-12-22 02:35:44,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5229 to 5226. [2023-12-22 02:35:44,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5226 states, 3945 states have (on average 1.2425855513307984) internal successors, (4902), 4090 states have internal predecessors, (4902), 594 states have call successors, (594), 484 states have call predecessors, (594), 685 states have return successors, (836), 654 states have call predecessors, (836), 591 states have call successors, (836) [2023-12-22 02:35:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5226 states to 5226 states and 6332 transitions. [2023-12-22 02:35:44,585 INFO L78 Accepts]: Start accepts. Automaton has 5226 states and 6332 transitions. Word has length 86 [2023-12-22 02:35:44,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:44,586 INFO L495 AbstractCegarLoop]: Abstraction has 5226 states and 6332 transitions. [2023-12-22 02:35:44,586 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 02:35:44,586 INFO L276 IsEmpty]: Start isEmpty. Operand 5226 states and 6332 transitions. [2023-12-22 02:35:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-22 02:35:44,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:44,590 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 02:35:44,598 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 02:35:44,798 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 02:35:44,799 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:44,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:44,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1862859010, now seen corresponding path program 1 times [2023-12-22 02:35:44,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:44,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653119154] [2023-12-22 02:35:44,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:44,800 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 02:35:44,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:44,801 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 02:35:44,805 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 (16)] Waiting until timeout for monitored process [2023-12-22 02:35:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:44,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:44,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:44,947 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 02:35:44,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:44,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:44,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653119154] [2023-12-22 02:35:44,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653119154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:44,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:44,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:44,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799135816] [2023-12-22 02:35:44,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:44,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:44,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:44,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:44,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:44,950 INFO L87 Difference]: Start difference. First operand 5226 states and 6332 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 02:35:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:46,047 INFO L93 Difference]: Finished difference Result 12477 states and 15018 transitions. [2023-12-22 02:35:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:35:46,047 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 02:35:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:46,065 INFO L225 Difference]: With dead ends: 12477 [2023-12-22 02:35:46,065 INFO L226 Difference]: Without dead ends: 7369 [2023-12-22 02:35:46,073 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 02:35:46,073 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 867 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:46,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 854 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-22 02:35:46,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2023-12-22 02:35:46,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 7049. [2023-12-22 02:35:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7049 states, 5279 states have (on average 1.2364084106838416) internal successors, (6527), 5460 states have internal predecessors, (6527), 814 states have call successors, (814), 673 states have call predecessors, (814), 954 states have return successors, (1130), 917 states have call predecessors, (1130), 811 states have call successors, (1130) [2023-12-22 02:35:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7049 states to 7049 states and 8471 transitions. [2023-12-22 02:35:46,506 INFO L78 Accepts]: Start accepts. Automaton has 7049 states and 8471 transitions. Word has length 145 [2023-12-22 02:35:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:46,507 INFO L495 AbstractCegarLoop]: Abstraction has 7049 states and 8471 transitions. [2023-12-22 02:35:46,507 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 02:35:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 7049 states and 8471 transitions. [2023-12-22 02:35:46,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:35:46,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:46,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:46,516 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 (16)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:46,714 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 02:35:46,714 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:46,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:46,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1939723724, now seen corresponding path program 1 times [2023-12-22 02:35:46,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:46,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968494700] [2023-12-22 02:35:46,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:46,716 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 02:35:46,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:46,717 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 02:35:46,717 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 02:35:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:46,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:46,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:46,854 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 02:35:46,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:46,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:46,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968494700] [2023-12-22 02:35:46,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968494700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:46,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:46,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:35:46,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944152835] [2023-12-22 02:35:46,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:46,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:46,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:46,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:46,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:46,856 INFO L87 Difference]: Start difference. First operand 7049 states and 8471 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, (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 02:35:47,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:47,237 INFO L93 Difference]: Finished difference Result 7348 states and 8955 transitions. [2023-12-22 02:35:47,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:47,238 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, (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 142 [2023-12-22 02:35:47,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:47,256 INFO L225 Difference]: With dead ends: 7348 [2023-12-22 02:35:47,256 INFO L226 Difference]: Without dead ends: 7049 [2023-12-22 02:35:47,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 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 02:35:47,260 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 488 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:47,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 681 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:35:47,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7049 states. [2023-12-22 02:35:47,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7049 to 7049. [2023-12-22 02:35:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7049 states, 5279 states have (on average 1.2362189808675885) internal successors, (6526), 5460 states have internal predecessors, (6526), 814 states have call successors, (814), 673 states have call predecessors, (814), 954 states have return successors, (1130), 917 states have call predecessors, (1130), 811 states have call successors, (1130) [2023-12-22 02:35:47,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7049 states to 7049 states and 8470 transitions. [2023-12-22 02:35:47,731 INFO L78 Accepts]: Start accepts. Automaton has 7049 states and 8470 transitions. Word has length 142 [2023-12-22 02:35:47,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:47,731 INFO L495 AbstractCegarLoop]: Abstraction has 7049 states and 8470 transitions. [2023-12-22 02:35:47,731 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, (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 02:35:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 7049 states and 8470 transitions. [2023-12-22 02:35:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:35:47,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:47,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:47,741 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 02:35:47,939 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 02:35:47,940 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:47,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:47,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2066424182, now seen corresponding path program 1 times [2023-12-22 02:35:47,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:47,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914739976] [2023-12-22 02:35:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:47,941 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 02:35:47,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:47,942 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 02:35:47,981 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 02:35:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:48,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:48,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:48,143 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 02:35:48,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:48,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:48,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914739976] [2023-12-22 02:35:48,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914739976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:48,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:48,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:48,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7412026] [2023-12-22 02:35:48,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:48,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:48,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:48,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:48,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:48,145 INFO L87 Difference]: Start difference. First operand 7049 states and 8470 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 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 02:35:49,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:49,214 INFO L93 Difference]: Finished difference Result 7672 states and 9491 transitions. [2023-12-22 02:35:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:35:49,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 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 142 [2023-12-22 02:35:49,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:49,230 INFO L225 Difference]: With dead ends: 7672 [2023-12-22 02:35:49,230 INFO L226 Difference]: Without dead ends: 7381 [2023-12-22 02:35:49,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:35:49,232 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 1097 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:49,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 1427 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-22 02:35:49,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7381 states. [2023-12-22 02:35:49,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7381 to 7354. [2023-12-22 02:35:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7354 states, 5558 states have (on average 1.256926952141058) internal successors, (6986), 5740 states have internal predecessors, (6986), 833 states have call successors, (833), 679 states have call predecessors, (833), 961 states have return successors, (1150), 936 states have call predecessors, (1150), 830 states have call successors, (1150) [2023-12-22 02:35:49,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7354 states to 7354 states and 8969 transitions. [2023-12-22 02:35:49,691 INFO L78 Accepts]: Start accepts. Automaton has 7354 states and 8969 transitions. Word has length 142 [2023-12-22 02:35:49,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:49,691 INFO L495 AbstractCegarLoop]: Abstraction has 7354 states and 8969 transitions. [2023-12-22 02:35:49,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 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 02:35:49,692 INFO L276 IsEmpty]: Start isEmpty. Operand 7354 states and 8969 transitions. [2023-12-22 02:35:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:35:49,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:49,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:49,710 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 (18)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:49,900 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 02:35:49,902 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:49,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:49,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1556450486, now seen corresponding path program 1 times [2023-12-22 02:35:49,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:49,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578162164] [2023-12-22 02:35:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:49,903 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 02:35:49,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:49,904 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 02:35:49,932 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 02:35:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:50,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:50,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:50,097 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 02:35:50,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:50,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:50,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578162164] [2023-12-22 02:35:50,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578162164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:50,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:50,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:50,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049343234] [2023-12-22 02:35:50,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:50,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:50,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:50,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:50,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:50,101 INFO L87 Difference]: Start difference. First operand 7354 states and 8969 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:35:50,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:50,904 INFO L93 Difference]: Finished difference Result 7950 states and 9944 transitions. [2023-12-22 02:35:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:50,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:35:50,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:50,924 INFO L225 Difference]: With dead ends: 7950 [2023-12-22 02:35:50,924 INFO L226 Difference]: Without dead ends: 7354 [2023-12-22 02:35:50,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:35:50,930 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 819 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:50,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 946 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2023-12-22 02:35:51,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7354. [2023-12-22 02:35:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7354 states, 5558 states have (on average 1.2556675062972291) internal successors, (6979), 5740 states have internal predecessors, (6979), 833 states have call successors, (833), 679 states have call predecessors, (833), 961 states have return successors, (1150), 936 states have call predecessors, (1150), 830 states have call successors, (1150) [2023-12-22 02:35:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7354 states to 7354 states and 8962 transitions. [2023-12-22 02:35:51,450 INFO L78 Accepts]: Start accepts. Automaton has 7354 states and 8962 transitions. Word has length 142 [2023-12-22 02:35:51,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:51,450 INFO L495 AbstractCegarLoop]: Abstraction has 7354 states and 8962 transitions. [2023-12-22 02:35:51,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:35:51,450 INFO L276 IsEmpty]: Start isEmpty. Operand 7354 states and 8962 transitions. [2023-12-22 02:35:51,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:35:51,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:51,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:51,466 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 (19)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:51,659 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 02:35:51,659 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:51,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:51,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1955641718, now seen corresponding path program 1 times [2023-12-22 02:35:51,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:51,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102975818] [2023-12-22 02:35:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:51,660 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 02:35:51,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:51,661 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 02:35:51,698 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 02:35:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:51,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:51,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:51,856 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 02:35:51,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:51,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:51,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102975818] [2023-12-22 02:35:51,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102975818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:51,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:51,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:51,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261160668] [2023-12-22 02:35:51,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:51,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:51,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:51,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:51,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:51,858 INFO L87 Difference]: Start difference. First operand 7354 states and 8962 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:35:52,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:52,851 INFO L93 Difference]: Finished difference Result 7950 states and 9930 transitions. [2023-12-22 02:35:52,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:52,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:35:52,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:52,868 INFO L225 Difference]: With dead ends: 7950 [2023-12-22 02:35:52,868 INFO L226 Difference]: Without dead ends: 7354 [2023-12-22 02:35:52,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:35:52,871 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 813 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:52,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 939 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:52,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2023-12-22 02:35:53,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7354. [2023-12-22 02:35:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7354 states, 5558 states have (on average 1.2544080604534005) internal successors, (6972), 5740 states have internal predecessors, (6972), 833 states have call successors, (833), 679 states have call predecessors, (833), 961 states have return successors, (1150), 936 states have call predecessors, (1150), 830 states have call successors, (1150) [2023-12-22 02:35:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7354 states to 7354 states and 8955 transitions. [2023-12-22 02:35:53,441 INFO L78 Accepts]: Start accepts. Automaton has 7354 states and 8955 transitions. Word has length 142 [2023-12-22 02:35:53,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:53,441 INFO L495 AbstractCegarLoop]: Abstraction has 7354 states and 8955 transitions. [2023-12-22 02:35:53,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:35:53,441 INFO L276 IsEmpty]: Start isEmpty. Operand 7354 states and 8955 transitions. [2023-12-22 02:35:53,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:35:53,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:53,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:53,450 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 02:35:53,650 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 02:35:53,650 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:53,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:53,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1414329526, now seen corresponding path program 1 times [2023-12-22 02:35:53,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:53,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746229537] [2023-12-22 02:35:53,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:53,651 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 02:35:53,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:53,652 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 02:35:53,685 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 02:35:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:53,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:53,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:53,837 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 02:35:53,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:53,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:53,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746229537] [2023-12-22 02:35:53,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746229537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:53,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:53,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:53,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827765619] [2023-12-22 02:35:53,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:53,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:53,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:53,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:53,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:53,839 INFO L87 Difference]: Start difference. First operand 7354 states and 8955 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:35:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:54,721 INFO L93 Difference]: Finished difference Result 7950 states and 9916 transitions. [2023-12-22 02:35:54,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:54,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:35:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:54,738 INFO L225 Difference]: With dead ends: 7950 [2023-12-22 02:35:54,738 INFO L226 Difference]: Without dead ends: 7354 [2023-12-22 02:35:54,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:35:54,742 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 807 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:54,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 932 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:54,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2023-12-22 02:35:55,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7354. [2023-12-22 02:35:55,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7354 states, 5558 states have (on average 1.2531486146095718) internal successors, (6965), 5740 states have internal predecessors, (6965), 833 states have call successors, (833), 679 states have call predecessors, (833), 961 states have return successors, (1150), 936 states have call predecessors, (1150), 830 states have call successors, (1150) [2023-12-22 02:35:55,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7354 states to 7354 states and 8948 transitions. [2023-12-22 02:35:55,319 INFO L78 Accepts]: Start accepts. Automaton has 7354 states and 8948 transitions. Word has length 142 [2023-12-22 02:35:55,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:55,319 INFO L495 AbstractCegarLoop]: Abstraction has 7354 states and 8948 transitions. [2023-12-22 02:35:55,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:35:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 7354 states and 8948 transitions. [2023-12-22 02:35:55,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:35:55,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:55,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:55,335 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 02:35:55,527 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 02:35:55,527 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:55,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:55,528 INFO L85 PathProgramCache]: Analyzing trace with hash 981225846, now seen corresponding path program 1 times [2023-12-22 02:35:55,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:55,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614197860] [2023-12-22 02:35:55,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:55,528 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 02:35:55,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:55,530 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 02:35:55,531 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 02:35:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:55,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:55,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:55,737 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 02:35:55,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:55,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:55,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614197860] [2023-12-22 02:35:55,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614197860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:55,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:55,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:55,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387951863] [2023-12-22 02:35:55,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:55,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:55,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:55,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:55,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:55,739 INFO L87 Difference]: Start difference. First operand 7354 states and 8948 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:35:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:56,674 INFO L93 Difference]: Finished difference Result 7950 states and 9902 transitions. [2023-12-22 02:35:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:56,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:35:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:56,689 INFO L225 Difference]: With dead ends: 7950 [2023-12-22 02:35:56,689 INFO L226 Difference]: Without dead ends: 7354 [2023-12-22 02:35:56,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:35:56,692 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 801 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:56,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 925 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:56,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2023-12-22 02:35:57,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7354. [2023-12-22 02:35:57,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7354 states, 5558 states have (on average 1.251889168765743) internal successors, (6958), 5740 states have internal predecessors, (6958), 833 states have call successors, (833), 679 states have call predecessors, (833), 961 states have return successors, (1150), 936 states have call predecessors, (1150), 830 states have call successors, (1150) [2023-12-22 02:35:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7354 states to 7354 states and 8941 transitions. [2023-12-22 02:35:57,436 INFO L78 Accepts]: Start accepts. Automaton has 7354 states and 8941 transitions. Word has length 142 [2023-12-22 02:35:57,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:57,436 INFO L495 AbstractCegarLoop]: Abstraction has 7354 states and 8941 transitions. [2023-12-22 02:35:57,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:35:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 7354 states and 8941 transitions. [2023-12-22 02:35:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:35:57,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:57,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:57,444 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 (22)] Ended with exit code 0 [2023-12-22 02:35:57,644 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 02:35:57,645 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:57,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:57,645 INFO L85 PathProgramCache]: Analyzing trace with hash -300946440, now seen corresponding path program 1 times [2023-12-22 02:35:57,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:57,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077648405] [2023-12-22 02:35:57,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:57,646 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 02:35:57,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:57,647 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 02:35:57,649 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 02:35:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:57,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:57,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:35:57,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:57,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:57,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077648405] [2023-12-22 02:35:57,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077648405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:57,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:57,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:57,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452264935] [2023-12-22 02:35:57,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:57,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:57,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:57,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:57,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:57,832 INFO L87 Difference]: Start difference. First operand 7354 states and 8941 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:35:58,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:58,833 INFO L93 Difference]: Finished difference Result 7950 states and 9888 transitions. [2023-12-22 02:35:58,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:35:58,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:35:58,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:58,849 INFO L225 Difference]: With dead ends: 7950 [2023-12-22 02:35:58,849 INFO L226 Difference]: Without dead ends: 7354 [2023-12-22 02:35:58,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:35:58,852 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 795 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:58,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 918 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:35:58,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2023-12-22 02:35:59,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7354. [2023-12-22 02:35:59,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7354 states, 5558 states have (on average 1.2506297229219143) internal successors, (6951), 5740 states have internal predecessors, (6951), 833 states have call successors, (833), 679 states have call predecessors, (833), 961 states have return successors, (1150), 936 states have call predecessors, (1150), 830 states have call successors, (1150) [2023-12-22 02:35:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7354 states to 7354 states and 8934 transitions. [2023-12-22 02:35:59,487 INFO L78 Accepts]: Start accepts. Automaton has 7354 states and 8934 transitions. Word has length 142 [2023-12-22 02:35:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:59,487 INFO L495 AbstractCegarLoop]: Abstraction has 7354 states and 8934 transitions. [2023-12-22 02:35:59,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:35:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 7354 states and 8934 transitions. [2023-12-22 02:35:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:35:59,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:59,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:59,495 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 (23)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:59,695 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 02:35:59,695 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:59,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1307539640, now seen corresponding path program 1 times [2023-12-22 02:35:59,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:59,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138547910] [2023-12-22 02:35:59,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:59,696 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 02:35:59,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:59,697 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 02:35:59,700 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 02:35:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:59,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:59,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:59,866 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 02:35:59,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:59,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:59,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138547910] [2023-12-22 02:35:59,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138547910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:59,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:59,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:59,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920185761] [2023-12-22 02:35:59,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:59,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:59,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:59,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:59,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:59,868 INFO L87 Difference]: Start difference. First operand 7354 states and 8934 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:00,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:00,841 INFO L93 Difference]: Finished difference Result 7950 states and 9874 transitions. [2023-12-22 02:36:00,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:36:00,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:00,854 INFO L225 Difference]: With dead ends: 7950 [2023-12-22 02:36:00,854 INFO L226 Difference]: Without dead ends: 7354 [2023-12-22 02:36:00,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:36:00,857 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 788 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:00,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 911 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:36:00,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2023-12-22 02:36:01,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7354. [2023-12-22 02:36:01,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7354 states, 5558 states have (on average 1.2493702770780857) internal successors, (6944), 5740 states have internal predecessors, (6944), 833 states have call successors, (833), 679 states have call predecessors, (833), 961 states have return successors, (1150), 936 states have call predecessors, (1150), 830 states have call successors, (1150) [2023-12-22 02:36:01,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7354 states to 7354 states and 8927 transitions. [2023-12-22 02:36:01,524 INFO L78 Accepts]: Start accepts. Automaton has 7354 states and 8927 transitions. Word has length 142 [2023-12-22 02:36:01,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:01,524 INFO L495 AbstractCegarLoop]: Abstraction has 7354 states and 8927 transitions. [2023-12-22 02:36:01,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:01,524 INFO L276 IsEmpty]: Start isEmpty. Operand 7354 states and 8927 transitions. [2023-12-22 02:36:01,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:01,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:01,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:01,531 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 (24)] Ended with exit code 0 [2023-12-22 02:36:01,728 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 02:36:01,728 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:01,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:01,729 INFO L85 PathProgramCache]: Analyzing trace with hash 902509944, now seen corresponding path program 1 times [2023-12-22 02:36:01,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:01,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870515959] [2023-12-22 02:36:01,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:01,729 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 02:36:01,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:01,730 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 02:36:01,731 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 02:36:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:01,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:01,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:01,904 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 02:36:01,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:01,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:01,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870515959] [2023-12-22 02:36:01,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870515959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:01,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:01,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:01,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316244092] [2023-12-22 02:36:01,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:01,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:36:01,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:36:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:01,906 INFO L87 Difference]: Start difference. First operand 7354 states and 8927 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:02,951 INFO L93 Difference]: Finished difference Result 7950 states and 9860 transitions. [2023-12-22 02:36:02,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:36:02,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:02,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:02,964 INFO L225 Difference]: With dead ends: 7950 [2023-12-22 02:36:02,964 INFO L226 Difference]: Without dead ends: 7354 [2023-12-22 02:36:02,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:36:02,967 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 782 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:02,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 904 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:36:02,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2023-12-22 02:36:03,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7354. [2023-12-22 02:36:03,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7354 states, 5558 states have (on average 1.248110831234257) internal successors, (6937), 5740 states have internal predecessors, (6937), 833 states have call successors, (833), 679 states have call predecessors, (833), 961 states have return successors, (1150), 936 states have call predecessors, (1150), 830 states have call successors, (1150) [2023-12-22 02:36:03,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7354 states to 7354 states and 8920 transitions. [2023-12-22 02:36:03,652 INFO L78 Accepts]: Start accepts. Automaton has 7354 states and 8920 transitions. Word has length 142 [2023-12-22 02:36:03,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:03,652 INFO L495 AbstractCegarLoop]: Abstraction has 7354 states and 8920 transitions. [2023-12-22 02:36:03,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:03,653 INFO L276 IsEmpty]: Start isEmpty. Operand 7354 states and 8920 transitions. [2023-12-22 02:36:03,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:03,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:03,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:03,659 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 (25)] Ended with exit code 0 [2023-12-22 02:36:03,855 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 02:36:03,855 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:03,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:03,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1188765512, now seen corresponding path program 1 times [2023-12-22 02:36:03,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:03,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378761351] [2023-12-22 02:36:03,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:03,857 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 02:36:03,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:03,858 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 02:36:03,859 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 02:36:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:03,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:03,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:04,026 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 02:36:04,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:04,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:04,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378761351] [2023-12-22 02:36:04,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378761351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:04,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:04,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:04,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472327678] [2023-12-22 02:36:04,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:04,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:36:04,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:04,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:36:04,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:04,028 INFO L87 Difference]: Start difference. First operand 7354 states and 8920 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:05,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:05,099 INFO L93 Difference]: Finished difference Result 7950 states and 9846 transitions. [2023-12-22 02:36:05,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:36:05,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:05,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:05,113 INFO L225 Difference]: With dead ends: 7950 [2023-12-22 02:36:05,113 INFO L226 Difference]: Without dead ends: 7354 [2023-12-22 02:36:05,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:36:05,116 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 776 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:05,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 897 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:36:05,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2023-12-22 02:36:05,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7354. [2023-12-22 02:36:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7354 states, 5558 states have (on average 1.2468513853904282) internal successors, (6930), 5740 states have internal predecessors, (6930), 833 states have call successors, (833), 679 states have call predecessors, (833), 961 states have return successors, (1150), 936 states have call predecessors, (1150), 830 states have call successors, (1150) [2023-12-22 02:36:05,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7354 states to 7354 states and 8913 transitions. [2023-12-22 02:36:05,844 INFO L78 Accepts]: Start accepts. Automaton has 7354 states and 8913 transitions. Word has length 142 [2023-12-22 02:36:05,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:05,844 INFO L495 AbstractCegarLoop]: Abstraction has 7354 states and 8913 transitions. [2023-12-22 02:36:05,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:05,844 INFO L276 IsEmpty]: Start isEmpty. Operand 7354 states and 8913 transitions. [2023-12-22 02:36:05,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:05,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:05,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:05,869 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 (26)] Forceful destruction successful, exit code 0 [2023-12-22 02:36:06,049 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 02:36:06,049 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:06,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:06,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1514720632, now seen corresponding path program 1 times [2023-12-22 02:36:06,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:06,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668036952] [2023-12-22 02:36:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:06,050 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 02:36:06,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:06,051 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 02:36:06,052 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 02:36:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:06,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:06,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:06,224 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 02:36:06,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:06,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:06,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668036952] [2023-12-22 02:36:06,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668036952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:06,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:06,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045736269] [2023-12-22 02:36:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:06,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:36:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:36:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:06,226 INFO L87 Difference]: Start difference. First operand 7354 states and 8913 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:07,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:07,309 INFO L93 Difference]: Finished difference Result 7950 states and 9832 transitions. [2023-12-22 02:36:07,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:36:07,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:07,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:07,324 INFO L225 Difference]: With dead ends: 7950 [2023-12-22 02:36:07,324 INFO L226 Difference]: Without dead ends: 7354 [2023-12-22 02:36:07,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:36:07,327 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 770 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:07,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 890 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:36:07,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2023-12-22 02:36:08,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7354. [2023-12-22 02:36:08,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7354 states, 5558 states have (on average 1.2455919395465995) internal successors, (6923), 5740 states have internal predecessors, (6923), 833 states have call successors, (833), 679 states have call predecessors, (833), 961 states have return successors, (1150), 936 states have call predecessors, (1150), 830 states have call successors, (1150) [2023-12-22 02:36:08,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7354 states to 7354 states and 8906 transitions. [2023-12-22 02:36:08,120 INFO L78 Accepts]: Start accepts. Automaton has 7354 states and 8906 transitions. Word has length 142 [2023-12-22 02:36:08,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:08,120 INFO L495 AbstractCegarLoop]: Abstraction has 7354 states and 8906 transitions. [2023-12-22 02:36:08,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:08,120 INFO L276 IsEmpty]: Start isEmpty. Operand 7354 states and 8906 transitions. [2023-12-22 02:36:08,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:08,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:08,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:08,127 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 (27)] Ended with exit code 0 [2023-12-22 02:36:08,326 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 02:36:08,327 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:08,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1030469448, now seen corresponding path program 1 times [2023-12-22 02:36:08,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:08,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278417377] [2023-12-22 02:36:08,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:08,328 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 02:36:08,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:08,329 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 02:36:08,330 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 02:36:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:08,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:08,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:08,494 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 02:36:08,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:08,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:08,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278417377] [2023-12-22 02:36:08,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278417377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:08,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:08,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:08,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210934819] [2023-12-22 02:36:08,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:08,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:36:08,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:08,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:36:08,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:08,496 INFO L87 Difference]: Start difference. First operand 7354 states and 8906 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:09,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:09,727 INFO L93 Difference]: Finished difference Result 8092 states and 10050 transitions. [2023-12-22 02:36:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:36:09,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:09,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:09,741 INFO L225 Difference]: With dead ends: 8092 [2023-12-22 02:36:09,741 INFO L226 Difference]: Without dead ends: 7496 [2023-12-22 02:36:09,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:36:09,745 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 860 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:09,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 884 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:36:09,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7496 states. [2023-12-22 02:36:10,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7496 to 7496. [2023-12-22 02:36:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 5694 states have (on average 1.249736564805058) internal successors, (7116), 5876 states have internal predecessors, (7116), 835 states have call successors, (835), 683 states have call predecessors, (835), 965 states have return successors, (1152), 938 states have call predecessors, (1152), 832 states have call successors, (1152) [2023-12-22 02:36:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 9103 transitions. [2023-12-22 02:36:10,549 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 9103 transitions. Word has length 142 [2023-12-22 02:36:10,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:10,549 INFO L495 AbstractCegarLoop]: Abstraction has 7496 states and 9103 transitions. [2023-12-22 02:36:10,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:10,550 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 9103 transitions. [2023-12-22 02:36:10,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:10,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:10,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:10,560 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 02:36:10,757 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 02:36:10,758 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:10,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:10,758 INFO L85 PathProgramCache]: Analyzing trace with hash 827090296, now seen corresponding path program 1 times [2023-12-22 02:36:10,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:10,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161024278] [2023-12-22 02:36:10,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:10,759 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 02:36:10,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:10,760 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 02:36:10,760 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 02:36:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:10,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:10,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:10,941 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 02:36:10,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:10,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:10,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161024278] [2023-12-22 02:36:10,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161024278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:10,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:10,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:10,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479805137] [2023-12-22 02:36:10,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:10,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:36:10,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:10,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:36:10,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:10,943 INFO L87 Difference]: Start difference. First operand 7496 states and 9103 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:12,248 INFO L93 Difference]: Finished difference Result 8376 states and 10444 transitions. [2023-12-22 02:36:12,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:36:12,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:12,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:12,259 INFO L225 Difference]: With dead ends: 8376 [2023-12-22 02:36:12,259 INFO L226 Difference]: Without dead ends: 7638 [2023-12-22 02:36:12,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:36:12,261 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 853 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:12,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 877 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:36:12,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7638 states. [2023-12-22 02:36:13,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7638 to 7638. [2023-12-22 02:36:13,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7638 states, 5830 states have (on average 1.2530017152658661) internal successors, (7305), 6012 states have internal predecessors, (7305), 837 states have call successors, (837), 687 states have call predecessors, (837), 969 states have return successors, (1154), 940 states have call predecessors, (1154), 834 states have call successors, (1154) [2023-12-22 02:36:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7638 states to 7638 states and 9296 transitions. [2023-12-22 02:36:13,105 INFO L78 Accepts]: Start accepts. Automaton has 7638 states and 9296 transitions. Word has length 142 [2023-12-22 02:36:13,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:13,105 INFO L495 AbstractCegarLoop]: Abstraction has 7638 states and 9296 transitions. [2023-12-22 02:36:13,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:13,105 INFO L276 IsEmpty]: Start isEmpty. Operand 7638 states and 9296 transitions. [2023-12-22 02:36:13,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:13,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:13,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:13,120 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 (29)] Ended with exit code 0 [2023-12-22 02:36:13,312 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 02:36:13,312 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:13,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:13,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1848164889, now seen corresponding path program 1 times [2023-12-22 02:36:13,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:13,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134218831] [2023-12-22 02:36:13,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:13,313 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 02:36:13,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:13,314 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 02:36:13,316 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 02:36:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:13,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:13,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:13,493 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 02:36:13,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:13,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:13,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134218831] [2023-12-22 02:36:13,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134218831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:13,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:13,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:13,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545938234] [2023-12-22 02:36:13,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:13,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:36:13,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:13,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:36:13,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:13,495 INFO L87 Difference]: Start difference. First operand 7638 states and 9296 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:14,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:14,814 INFO L93 Difference]: Finished difference Result 8660 states and 10830 transitions. [2023-12-22 02:36:14,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:36:14,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:14,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:14,828 INFO L225 Difference]: With dead ends: 8660 [2023-12-22 02:36:14,828 INFO L226 Difference]: Without dead ends: 7780 [2023-12-22 02:36:14,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:36:14,832 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 847 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:14,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 870 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:36:14,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2023-12-22 02:36:15,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 7780. [2023-12-22 02:36:15,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7780 states, 5966 states have (on average 1.255447536037546) internal successors, (7490), 6148 states have internal predecessors, (7490), 839 states have call successors, (839), 691 states have call predecessors, (839), 973 states have return successors, (1156), 942 states have call predecessors, (1156), 836 states have call successors, (1156) [2023-12-22 02:36:15,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7780 states to 7780 states and 9485 transitions. [2023-12-22 02:36:15,737 INFO L78 Accepts]: Start accepts. Automaton has 7780 states and 9485 transitions. Word has length 142 [2023-12-22 02:36:15,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:15,737 INFO L495 AbstractCegarLoop]: Abstraction has 7780 states and 9485 transitions. [2023-12-22 02:36:15,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:15,737 INFO L276 IsEmpty]: Start isEmpty. Operand 7780 states and 9485 transitions. [2023-12-22 02:36:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:15,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:15,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:15,744 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 (30)] Ended with exit code 0 [2023-12-22 02:36:15,940 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 02:36:15,941 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:15,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:15,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1640042201, now seen corresponding path program 1 times [2023-12-22 02:36:15,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:15,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455561577] [2023-12-22 02:36:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:15,942 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 02:36:15,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:15,943 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 02:36:15,943 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 02:36:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:16,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:16,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:16,102 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 02:36:16,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:16,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:16,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455561577] [2023-12-22 02:36:16,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455561577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:16,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:16,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:16,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409185208] [2023-12-22 02:36:16,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:16,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:36:16,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:16,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:36:16,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:16,104 INFO L87 Difference]: Start difference. First operand 7780 states and 9485 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:17,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:17,436 INFO L93 Difference]: Finished difference Result 8944 states and 11208 transitions. [2023-12-22 02:36:17,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:36:17,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:17,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:17,450 INFO L225 Difference]: With dead ends: 8944 [2023-12-22 02:36:17,451 INFO L226 Difference]: Without dead ends: 7922 [2023-12-22 02:36:17,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:36:17,454 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 839 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:17,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 863 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:36:17,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7922 states. [2023-12-22 02:36:18,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7922 to 7922. [2023-12-22 02:36:18,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7922 states, 6102 states have (on average 1.2571288102261553) internal successors, (7671), 6284 states have internal predecessors, (7671), 841 states have call successors, (841), 695 states have call predecessors, (841), 977 states have return successors, (1158), 944 states have call predecessors, (1158), 838 states have call successors, (1158) [2023-12-22 02:36:18,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7922 states to 7922 states and 9670 transitions. [2023-12-22 02:36:18,397 INFO L78 Accepts]: Start accepts. Automaton has 7922 states and 9670 transitions. Word has length 142 [2023-12-22 02:36:18,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:18,398 INFO L495 AbstractCegarLoop]: Abstraction has 7922 states and 9670 transitions. [2023-12-22 02:36:18,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 7922 states and 9670 transitions. [2023-12-22 02:36:18,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:18,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:18,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:18,404 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 02:36:18,600 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 02:36:18,600 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:18,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:18,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2034888358, now seen corresponding path program 1 times [2023-12-22 02:36:18,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:18,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254437355] [2023-12-22 02:36:18,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:18,601 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 02:36:18,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:18,602 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 02:36:18,603 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 02:36:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:18,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:18,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:18,765 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 02:36:18,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:18,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254437355] [2023-12-22 02:36:18,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254437355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:18,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:18,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:18,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502415894] [2023-12-22 02:36:18,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:18,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:36:18,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:18,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:36:18,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:18,767 INFO L87 Difference]: Start difference. First operand 7922 states and 9670 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:20,151 INFO L93 Difference]: Finished difference Result 9228 states and 11578 transitions. [2023-12-22 02:36:20,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:36:20,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:20,171 INFO L225 Difference]: With dead ends: 9228 [2023-12-22 02:36:20,171 INFO L226 Difference]: Without dead ends: 8064 [2023-12-22 02:36:20,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:36:20,176 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 832 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:20,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 856 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:36:20,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8064 states. [2023-12-22 02:36:21,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8064 to 8064. [2023-12-22 02:36:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8064 states, 6238 states have (on average 1.2580955434434113) internal successors, (7848), 6420 states have internal predecessors, (7848), 843 states have call successors, (843), 699 states have call predecessors, (843), 981 states have return successors, (1160), 946 states have call predecessors, (1160), 840 states have call successors, (1160) [2023-12-22 02:36:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8064 states to 8064 states and 9851 transitions. [2023-12-22 02:36:21,220 INFO L78 Accepts]: Start accepts. Automaton has 8064 states and 9851 transitions. Word has length 142 [2023-12-22 02:36:21,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:21,220 INFO L495 AbstractCegarLoop]: Abstraction has 8064 states and 9851 transitions. [2023-12-22 02:36:21,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:21,220 INFO L276 IsEmpty]: Start isEmpty. Operand 8064 states and 9851 transitions. [2023-12-22 02:36:21,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:21,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:21,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:21,227 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 (32)] Ended with exit code 0 [2023-12-22 02:36:21,427 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 02:36:21,427 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:21,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:21,427 INFO L85 PathProgramCache]: Analyzing trace with hash -15795046, now seen corresponding path program 1 times [2023-12-22 02:36:21,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:21,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410049291] [2023-12-22 02:36:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:21,428 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 02:36:21,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:21,429 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 02:36:21,430 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 02:36:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:21,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:21,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:21,587 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 02:36:21,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:21,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:21,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410049291] [2023-12-22 02:36:21,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410049291] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:21,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:21,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:21,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728542778] [2023-12-22 02:36:21,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:21,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:36:21,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:21,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:36:21,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:21,589 INFO L87 Difference]: Start difference. First operand 8064 states and 9851 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:23,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:23,042 INFO L93 Difference]: Finished difference Result 9512 states and 11940 transitions. [2023-12-22 02:36:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:36:23,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:23,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:23,057 INFO L225 Difference]: With dead ends: 9512 [2023-12-22 02:36:23,057 INFO L226 Difference]: Without dead ends: 8206 [2023-12-22 02:36:23,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:36:23,061 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 825 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:23,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 849 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:36:23,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8206 states. [2023-12-22 02:36:24,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8206 to 8206. [2023-12-22 02:36:24,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8206 states, 6374 states have (on average 1.258393473486037) internal successors, (8021), 6556 states have internal predecessors, (8021), 845 states have call successors, (845), 703 states have call predecessors, (845), 985 states have return successors, (1162), 948 states have call predecessors, (1162), 842 states have call successors, (1162) [2023-12-22 02:36:24,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8206 states to 8206 states and 10028 transitions. [2023-12-22 02:36:24,077 INFO L78 Accepts]: Start accepts. Automaton has 8206 states and 10028 transitions. Word has length 142 [2023-12-22 02:36:24,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:24,077 INFO L495 AbstractCegarLoop]: Abstraction has 8206 states and 10028 transitions. [2023-12-22 02:36:24,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:24,077 INFO L276 IsEmpty]: Start isEmpty. Operand 8206 states and 10028 transitions. [2023-12-22 02:36:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:24,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:24,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:24,086 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 02:36:24,283 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 02:36:24,284 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:24,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:24,284 INFO L85 PathProgramCache]: Analyzing trace with hash -307020709, now seen corresponding path program 1 times [2023-12-22 02:36:24,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:24,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093265064] [2023-12-22 02:36:24,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:24,285 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 02:36:24,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:24,286 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 02:36:24,286 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 02:36:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:24,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:24,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:36:24,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:24,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:24,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093265064] [2023-12-22 02:36:24,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093265064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:24,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:24,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:24,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621068134] [2023-12-22 02:36:24,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:24,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:36:24,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:24,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:36:24,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:24,449 INFO L87 Difference]: Start difference. First operand 8206 states and 10028 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:25,949 INFO L93 Difference]: Finished difference Result 9796 states and 12294 transitions. [2023-12-22 02:36:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:36:25,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:25,966 INFO L225 Difference]: With dead ends: 9796 [2023-12-22 02:36:25,966 INFO L226 Difference]: Without dead ends: 8348 [2023-12-22 02:36:25,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:36:25,972 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 818 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:25,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 842 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:36:25,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8348 states. [2023-12-22 02:36:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8348 to 8348. [2023-12-22 02:36:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8348 states, 6510 states have (on average 1.2580645161290323) internal successors, (8190), 6692 states have internal predecessors, (8190), 847 states have call successors, (847), 707 states have call predecessors, (847), 989 states have return successors, (1164), 950 states have call predecessors, (1164), 844 states have call successors, (1164) [2023-12-22 02:36:27,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8348 states to 8348 states and 10201 transitions. [2023-12-22 02:36:27,060 INFO L78 Accepts]: Start accepts. Automaton has 8348 states and 10201 transitions. Word has length 142 [2023-12-22 02:36:27,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:27,060 INFO L495 AbstractCegarLoop]: Abstraction has 8348 states and 10201 transitions. [2023-12-22 02:36:27,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 8348 states and 10201 transitions. [2023-12-22 02:36:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:27,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:27,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:27,067 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 (34)] Ended with exit code 0 [2023-12-22 02:36:27,262 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 02:36:27,263 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:27,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:27,263 INFO L85 PathProgramCache]: Analyzing trace with hash 30275483, now seen corresponding path program 1 times [2023-12-22 02:36:27,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:27,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409267852] [2023-12-22 02:36:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:27,264 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 02:36:27,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:27,265 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 02:36:27,265 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 02:36:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:27,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:27,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:27,444 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 02:36:27,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:27,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:27,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409267852] [2023-12-22 02:36:27,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409267852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:27,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:27,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:27,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090331462] [2023-12-22 02:36:27,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:27,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:36:27,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:27,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:36:27,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:27,446 INFO L87 Difference]: Start difference. First operand 8348 states and 10201 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:28,950 INFO L93 Difference]: Finished difference Result 10080 states and 12640 transitions. [2023-12-22 02:36:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:36:28,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:28,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:28,962 INFO L225 Difference]: With dead ends: 10080 [2023-12-22 02:36:28,962 INFO L226 Difference]: Without dead ends: 8490 [2023-12-22 02:36:28,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:36:28,964 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 811 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:28,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 835 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:36:28,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8490 states. [2023-12-22 02:36:30,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8490 to 8490. [2023-12-22 02:36:30,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8490 states, 6646 states have (on average 1.257147156184171) internal successors, (8355), 6828 states have internal predecessors, (8355), 849 states have call successors, (849), 711 states have call predecessors, (849), 993 states have return successors, (1166), 952 states have call predecessors, (1166), 846 states have call successors, (1166) [2023-12-22 02:36:30,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8490 states to 8490 states and 10370 transitions. [2023-12-22 02:36:30,054 INFO L78 Accepts]: Start accepts. Automaton has 8490 states and 10370 transitions. Word has length 142 [2023-12-22 02:36:30,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:30,054 INFO L495 AbstractCegarLoop]: Abstraction has 8490 states and 10370 transitions. [2023-12-22 02:36:30,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:30,055 INFO L276 IsEmpty]: Start isEmpty. Operand 8490 states and 10370 transitions. [2023-12-22 02:36:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:30,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:30,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:30,061 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 02:36:30,257 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 02:36:30,257 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:30,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:30,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2082538652, now seen corresponding path program 1 times [2023-12-22 02:36:30,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:30,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585787814] [2023-12-22 02:36:30,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:30,258 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 02:36:30,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:30,259 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 02:36:30,261 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 02:36:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:30,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:30,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:30,420 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 02:36:30,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:30,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:30,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585787814] [2023-12-22 02:36:30,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585787814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:30,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:30,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:30,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89440108] [2023-12-22 02:36:30,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:30,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:36:30,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:30,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:36:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:30,422 INFO L87 Difference]: Start difference. First operand 8490 states and 10370 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:31,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:31,982 INFO L93 Difference]: Finished difference Result 10364 states and 12978 transitions. [2023-12-22 02:36:31,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:36:31,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:31,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:31,997 INFO L225 Difference]: With dead ends: 10364 [2023-12-22 02:36:31,997 INFO L226 Difference]: Without dead ends: 8632 [2023-12-22 02:36:31,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:36:32,000 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 804 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:32,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 828 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:36:32,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8632 states. [2023-12-22 02:36:33,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8632 to 8632. [2023-12-22 02:36:33,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8632 states, 6782 states have (on average 1.25567679150693) internal successors, (8516), 6964 states have internal predecessors, (8516), 851 states have call successors, (851), 715 states have call predecessors, (851), 997 states have return successors, (1168), 954 states have call predecessors, (1168), 848 states have call successors, (1168) [2023-12-22 02:36:33,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8632 states to 8632 states and 10535 transitions. [2023-12-22 02:36:33,163 INFO L78 Accepts]: Start accepts. Automaton has 8632 states and 10535 transitions. Word has length 142 [2023-12-22 02:36:33,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:33,163 INFO L495 AbstractCegarLoop]: Abstraction has 8632 states and 10535 transitions. [2023-12-22 02:36:33,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:33,163 INFO L276 IsEmpty]: Start isEmpty. Operand 8632 states and 10535 transitions. [2023-12-22 02:36:33,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:33,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:33,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:33,170 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 02:36:33,366 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 02:36:33,366 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:33,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:33,367 INFO L85 PathProgramCache]: Analyzing trace with hash 49144606, now seen corresponding path program 1 times [2023-12-22 02:36:33,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:33,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980576159] [2023-12-22 02:36:33,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:33,367 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 02:36:33,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:33,368 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 02:36:33,369 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 02:36:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:33,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:33,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:33,528 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 02:36:33,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:33,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:33,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980576159] [2023-12-22 02:36:33,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980576159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:33,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:33,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:33,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913715955] [2023-12-22 02:36:33,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:33,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:36:33,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:33,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:36:33,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:36:33,530 INFO L87 Difference]: Start difference. First operand 8632 states and 10535 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:35,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:35,114 INFO L93 Difference]: Finished difference Result 10648 states and 13308 transitions. [2023-12-22 02:36:35,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:36:35,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:35,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:35,127 INFO L225 Difference]: With dead ends: 10648 [2023-12-22 02:36:35,127 INFO L226 Difference]: Without dead ends: 8774 [2023-12-22 02:36:35,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:36:35,130 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 797 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:35,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 821 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:36:35,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8774 states. [2023-12-22 02:36:36,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8774 to 8774. [2023-12-22 02:36:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8774 states, 6918 states have (on average 1.2536860364267128) internal successors, (8673), 7100 states have internal predecessors, (8673), 853 states have call successors, (853), 719 states have call predecessors, (853), 1001 states have return successors, (1170), 956 states have call predecessors, (1170), 850 states have call successors, (1170) [2023-12-22 02:36:36,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8774 states to 8774 states and 10696 transitions. [2023-12-22 02:36:36,325 INFO L78 Accepts]: Start accepts. Automaton has 8774 states and 10696 transitions. Word has length 142 [2023-12-22 02:36:36,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:36,325 INFO L495 AbstractCegarLoop]: Abstraction has 8774 states and 10696 transitions. [2023-12-22 02:36:36,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:36,325 INFO L276 IsEmpty]: Start isEmpty. Operand 8774 states and 10696 transitions. [2023-12-22 02:36:36,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:36,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:36,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:36,332 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 (37)] Ended with exit code 0 [2023-12-22 02:36:36,528 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 02:36:36,529 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:36,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:36,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1104982689, now seen corresponding path program 1 times [2023-12-22 02:36:36,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:36,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860434520] [2023-12-22 02:36:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:36,530 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 02:36:36,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:36,531 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 02:36:36,532 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 (38)] Waiting until timeout for monitored process [2023-12-22 02:36:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:36,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:36,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:36,654 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 02:36:36,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:36,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:36,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860434520] [2023-12-22 02:36:36,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860434520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:36,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:36,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:36,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393776193] [2023-12-22 02:36:36,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:36,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:36:36,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:36,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:36:36,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:36:36,656 INFO L87 Difference]: Start difference. First operand 8774 states and 10696 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:37,875 INFO L93 Difference]: Finished difference Result 10917 states and 13609 transitions. [2023-12-22 02:36:37,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:36:37,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:37,889 INFO L225 Difference]: With dead ends: 10917 [2023-12-22 02:36:37,889 INFO L226 Difference]: Without dead ends: 8902 [2023-12-22 02:36:37,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 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 02:36:37,893 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 92 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:37,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1525 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:36:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8902 states. [2023-12-22 02:36:39,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8902 to 8778. [2023-12-22 02:36:39,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8778 states, 6922 states have (on average 1.250650101126842) internal successors, (8657), 7104 states have internal predecessors, (8657), 853 states have call successors, (853), 719 states have call predecessors, (853), 1001 states have return successors, (1170), 956 states have call predecessors, (1170), 850 states have call successors, (1170) [2023-12-22 02:36:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8778 states to 8778 states and 10680 transitions. [2023-12-22 02:36:39,088 INFO L78 Accepts]: Start accepts. Automaton has 8778 states and 10680 transitions. Word has length 142 [2023-12-22 02:36:39,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:39,088 INFO L495 AbstractCegarLoop]: Abstraction has 8778 states and 10680 transitions. [2023-12-22 02:36:39,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:39,088 INFO L276 IsEmpty]: Start isEmpty. Operand 8778 states and 10680 transitions. [2023-12-22 02:36:39,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:39,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:39,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:39,094 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 (38)] Forceful destruction successful, exit code 0 [2023-12-22 02:36:39,292 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 02:36:39,293 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:39,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:39,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1571009693, now seen corresponding path program 1 times [2023-12-22 02:36:39,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:39,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517682357] [2023-12-22 02:36:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:39,294 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 02:36:39,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:39,295 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 02:36:39,296 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 02:36:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:39,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:39,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:39,423 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 02:36:39,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:39,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:39,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517682357] [2023-12-22 02:36:39,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517682357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:39,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:39,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797605777] [2023-12-22 02:36:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:39,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:36:39,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:36:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:36:39,424 INFO L87 Difference]: Start difference. First operand 8778 states and 10680 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:40,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:40,631 INFO L93 Difference]: Finished difference Result 10913 states and 13561 transitions. [2023-12-22 02:36:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:36:40,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:40,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:40,650 INFO L225 Difference]: With dead ends: 10913 [2023-12-22 02:36:40,651 INFO L226 Difference]: Without dead ends: 8894 [2023-12-22 02:36:40,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 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 02:36:40,654 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 83 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:40,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1529 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:36:40,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8894 states. [2023-12-22 02:36:41,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8894 to 8782. [2023-12-22 02:36:41,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8782 states, 6926 states have (on average 1.2476176725382617) internal successors, (8641), 7108 states have internal predecessors, (8641), 853 states have call successors, (853), 719 states have call predecessors, (853), 1001 states have return successors, (1170), 956 states have call predecessors, (1170), 850 states have call successors, (1170) [2023-12-22 02:36:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8782 states to 8782 states and 10664 transitions. [2023-12-22 02:36:41,953 INFO L78 Accepts]: Start accepts. Automaton has 8782 states and 10664 transitions. Word has length 142 [2023-12-22 02:36:41,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:41,953 INFO L495 AbstractCegarLoop]: Abstraction has 8782 states and 10664 transitions. [2023-12-22 02:36:41,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:41,953 INFO L276 IsEmpty]: Start isEmpty. Operand 8782 states and 10664 transitions. [2023-12-22 02:36:41,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:41,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:41,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:41,960 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 (39)] Ended with exit code 0 [2023-12-22 02:36:42,160 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 02:36:42,160 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:42,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:42,161 INFO L85 PathProgramCache]: Analyzing trace with hash 800276127, now seen corresponding path program 1 times [2023-12-22 02:36:42,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:42,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71512200] [2023-12-22 02:36:42,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:42,161 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 02:36:42,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:42,162 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 02:36:42,163 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 02:36:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:42,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:42,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:42,287 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 02:36:42,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:42,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:42,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71512200] [2023-12-22 02:36:42,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71512200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:42,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:42,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:42,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563550855] [2023-12-22 02:36:42,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:42,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:36:42,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:42,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:36:42,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:36:42,288 INFO L87 Difference]: Start difference. First operand 8782 states and 10664 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:43,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:43,461 INFO L93 Difference]: Finished difference Result 10909 states and 13513 transitions. [2023-12-22 02:36:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:36:43,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:43,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:43,478 INFO L225 Difference]: With dead ends: 10909 [2023-12-22 02:36:43,479 INFO L226 Difference]: Without dead ends: 8886 [2023-12-22 02:36:43,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 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 02:36:43,483 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 74 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:43,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1527 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:36:43,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8886 states. [2023-12-22 02:36:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8886 to 8786. [2023-12-22 02:36:44,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8786 states, 6930 states have (on average 1.2445887445887447) internal successors, (8625), 7112 states have internal predecessors, (8625), 853 states have call successors, (853), 719 states have call predecessors, (853), 1001 states have return successors, (1170), 956 states have call predecessors, (1170), 850 states have call successors, (1170) [2023-12-22 02:36:44,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8786 states to 8786 states and 10648 transitions. [2023-12-22 02:36:44,792 INFO L78 Accepts]: Start accepts. Automaton has 8786 states and 10648 transitions. Word has length 142 [2023-12-22 02:36:44,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:44,792 INFO L495 AbstractCegarLoop]: Abstraction has 8786 states and 10648 transitions. [2023-12-22 02:36:44,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:44,792 INFO L276 IsEmpty]: Start isEmpty. Operand 8786 states and 10648 transitions. [2023-12-22 02:36:44,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:44,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:44,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:44,799 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 (40)] Ended with exit code 0 [2023-12-22 02:36:44,995 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 02:36:44,995 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:44,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:44,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1078854819, now seen corresponding path program 1 times [2023-12-22 02:36:44,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:44,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868324800] [2023-12-22 02:36:44,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:44,996 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 02:36:44,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:44,997 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 02:36:44,998 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 02:36:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:45,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:36:45,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:45,157 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 02:36:45,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:45,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:45,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868324800] [2023-12-22 02:36:45,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868324800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:45,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:45,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:36:45,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616586090] [2023-12-22 02:36:45,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:45,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:36:45,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:45,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:36:45,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:36:45,159 INFO L87 Difference]: Start difference. First operand 8786 states and 10648 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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 02:36:46,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:46,448 INFO L93 Difference]: Finished difference Result 12669 states and 15746 transitions. [2023-12-22 02:36:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:36:46,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:46,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:46,465 INFO L225 Difference]: With dead ends: 12669 [2023-12-22 02:36:46,465 INFO L226 Difference]: Without dead ends: 10642 [2023-12-22 02:36:46,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 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 02:36:46,469 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 488 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:46,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 931 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:36:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10642 states. [2023-12-22 02:36:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10642 to 10636. [2023-12-22 02:36:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10636 states, 8676 states have (on average 1.255878284923928) internal successors, (10896), 8859 states have internal predecessors, (10896), 908 states have call successors, (908), 767 states have call predecessors, (908), 1050 states have return successors, (1226), 1011 states have call predecessors, (1226), 905 states have call successors, (1226) [2023-12-22 02:36:47,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10636 states to 10636 states and 13030 transitions. [2023-12-22 02:36:47,774 INFO L78 Accepts]: Start accepts. Automaton has 10636 states and 13030 transitions. Word has length 142 [2023-12-22 02:36:47,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:47,774 INFO L495 AbstractCegarLoop]: Abstraction has 10636 states and 13030 transitions. [2023-12-22 02:36:47,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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 02:36:47,774 INFO L276 IsEmpty]: Start isEmpty. Operand 10636 states and 13030 transitions. [2023-12-22 02:36:47,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:47,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:47,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:47,780 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 02:36:47,976 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 02:36:47,977 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:47,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:47,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1231283772, now seen corresponding path program 1 times [2023-12-22 02:36:47,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:47,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540732647] [2023-12-22 02:36:47,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:47,978 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 02:36:47,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:47,979 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 02:36:47,980 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 02:36:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:48,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:48,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:48,100 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 02:36:48,101 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:48,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:48,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540732647] [2023-12-22 02:36:48,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540732647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:48,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:48,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:48,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731793625] [2023-12-22 02:36:48,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:48,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:36:48,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:48,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:36:48,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:36:48,102 INFO L87 Difference]: Start difference. First operand 10636 states and 13030 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:49,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:49,389 INFO L93 Difference]: Finished difference Result 15525 states and 19507 transitions. [2023-12-22 02:36:49,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:36:49,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:49,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:49,413 INFO L225 Difference]: With dead ends: 15525 [2023-12-22 02:36:49,414 INFO L226 Difference]: Without dead ends: 11648 [2023-12-22 02:36:49,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 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 02:36:49,420 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 65 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:49,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1542 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:36:49,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11648 states. [2023-12-22 02:36:50,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11648 to 10680. [2023-12-22 02:36:50,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10680 states, 8720 states have (on average 1.2522935779816513) internal successors, (10920), 8903 states have internal predecessors, (10920), 908 states have call successors, (908), 767 states have call predecessors, (908), 1050 states have return successors, (1226), 1011 states have call predecessors, (1226), 905 states have call successors, (1226) [2023-12-22 02:36:50,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10680 states to 10680 states and 13054 transitions. [2023-12-22 02:36:50,716 INFO L78 Accepts]: Start accepts. Automaton has 10680 states and 13054 transitions. Word has length 142 [2023-12-22 02:36:50,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:50,716 INFO L495 AbstractCegarLoop]: Abstraction has 10680 states and 13054 transitions. [2023-12-22 02:36:50,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:50,717 INFO L276 IsEmpty]: Start isEmpty. Operand 10680 states and 13054 transitions. [2023-12-22 02:36:50,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:50,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:50,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:50,723 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 (42)] Ended with exit code 0 [2023-12-22 02:36:50,919 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 02:36:50,919 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:50,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:50,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1471523518, now seen corresponding path program 1 times [2023-12-22 02:36:50,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:50,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577042642] [2023-12-22 02:36:50,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:50,920 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 02:36:50,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:50,922 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 02:36:50,922 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 02:36:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:51,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:51,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:51,062 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 02:36:51,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:51,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:51,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577042642] [2023-12-22 02:36:51,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577042642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:51,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:51,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:51,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134298494] [2023-12-22 02:36:51,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:51,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:36:51,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:51,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:36:51,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:36:51,064 INFO L87 Difference]: Start difference. First operand 10680 states and 13054 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:52,371 INFO L93 Difference]: Finished difference Result 14681 states and 18302 transitions. [2023-12-22 02:36:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:36:52,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:52,391 INFO L225 Difference]: With dead ends: 14681 [2023-12-22 02:36:52,391 INFO L226 Difference]: Without dead ends: 10760 [2023-12-22 02:36:52,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 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 02:36:52,397 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 56 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:52,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1528 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:36:52,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10760 states. [2023-12-22 02:36:53,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10760 to 10684. [2023-12-22 02:36:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10684 states, 8724 states have (on average 1.2475928473177442) internal successors, (10884), 8907 states have internal predecessors, (10884), 908 states have call successors, (908), 767 states have call predecessors, (908), 1050 states have return successors, (1226), 1011 states have call predecessors, (1226), 905 states have call successors, (1226) [2023-12-22 02:36:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10684 states to 10684 states and 13018 transitions. [2023-12-22 02:36:53,732 INFO L78 Accepts]: Start accepts. Automaton has 10684 states and 13018 transitions. Word has length 142 [2023-12-22 02:36:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:53,732 INFO L495 AbstractCegarLoop]: Abstraction has 10684 states and 13018 transitions. [2023-12-22 02:36:53,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 10684 states and 13018 transitions. [2023-12-22 02:36:53,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:53,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:53,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:53,739 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 02:36:53,935 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 02:36:53,936 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:53,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:53,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1936220932, now seen corresponding path program 1 times [2023-12-22 02:36:53,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:53,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733556655] [2023-12-22 02:36:53,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:53,937 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 02:36:53,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:53,938 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 02:36:53,939 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 02:36:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:54,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:54,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:54,066 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 02:36:54,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:54,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:54,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733556655] [2023-12-22 02:36:54,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733556655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:54,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:54,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:54,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046330559] [2023-12-22 02:36:54,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:54,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:36:54,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:54,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:36:54,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:36:54,068 INFO L87 Difference]: Start difference. First operand 10684 states and 13018 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:55,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:55,353 INFO L93 Difference]: Finished difference Result 14721 states and 18272 transitions. [2023-12-22 02:36:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:36:55,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:55,373 INFO L225 Difference]: With dead ends: 14721 [2023-12-22 02:36:55,373 INFO L226 Difference]: Without dead ends: 10796 [2023-12-22 02:36:55,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 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 02:36:55,379 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 38 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:55,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1530 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:36:55,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10796 states. [2023-12-22 02:36:56,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10796 to 10692. [2023-12-22 02:36:56,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10692 states, 8732 states have (on average 1.2430142006413192) internal successors, (10854), 8915 states have internal predecessors, (10854), 908 states have call successors, (908), 767 states have call predecessors, (908), 1050 states have return successors, (1226), 1011 states have call predecessors, (1226), 905 states have call successors, (1226) [2023-12-22 02:36:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10692 states to 10692 states and 12988 transitions. [2023-12-22 02:36:56,689 INFO L78 Accepts]: Start accepts. Automaton has 10692 states and 12988 transitions. Word has length 142 [2023-12-22 02:36:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:56,689 INFO L495 AbstractCegarLoop]: Abstraction has 10692 states and 12988 transitions. [2023-12-22 02:36:56,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 10692 states and 12988 transitions. [2023-12-22 02:36:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:56,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:56,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:56,698 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 02:36:56,891 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 02:36:56,892 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:56,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:56,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1990613830, now seen corresponding path program 1 times [2023-12-22 02:36:56,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:56,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904613718] [2023-12-22 02:36:56,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:56,893 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 02:36:56,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:56,894 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 02:36:56,895 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 02:36:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:57,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:57,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:57,020 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 02:36:57,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:57,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:57,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904613718] [2023-12-22 02:36:57,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904613718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:57,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:57,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:57,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412873354] [2023-12-22 02:36:57,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:57,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:36:57,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:57,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:36:57,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:36:57,022 INFO L87 Difference]: Start difference. First operand 10692 states and 12988 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:58,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:36:58,306 INFO L93 Difference]: Finished difference Result 14713 states and 18180 transitions. [2023-12-22 02:36:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:36:58,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:36:58,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:36:58,326 INFO L225 Difference]: With dead ends: 14713 [2023-12-22 02:36:58,326 INFO L226 Difference]: Without dead ends: 10780 [2023-12-22 02:36:58,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 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 02:36:58,332 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 29 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:36:58,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1531 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:36:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10780 states. [2023-12-22 02:36:59,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10780 to 10700. [2023-12-22 02:36:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10700 states, 8740 states have (on average 1.2384439359267734) internal successors, (10824), 8923 states have internal predecessors, (10824), 908 states have call successors, (908), 767 states have call predecessors, (908), 1050 states have return successors, (1226), 1011 states have call predecessors, (1226), 905 states have call successors, (1226) [2023-12-22 02:36:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10700 states to 10700 states and 12958 transitions. [2023-12-22 02:36:59,660 INFO L78 Accepts]: Start accepts. Automaton has 10700 states and 12958 transitions. Word has length 142 [2023-12-22 02:36:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:36:59,660 INFO L495 AbstractCegarLoop]: Abstraction has 10700 states and 12958 transitions. [2023-12-22 02:36:59,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:36:59,660 INFO L276 IsEmpty]: Start isEmpty. Operand 10700 states and 12958 transitions. [2023-12-22 02:36:59,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:36:59,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:36:59,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:36:59,667 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 (45)] Ended with exit code 0 [2023-12-22 02:36:59,863 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 02:36:59,863 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:36:59,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:36:59,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1429914052, now seen corresponding path program 1 times [2023-12-22 02:36:59,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:36:59,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167392134] [2023-12-22 02:36:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:36:59,864 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 02:36:59,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:36:59,866 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 02:36:59,867 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 02:36:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:36:59,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:36:59,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:36:59,995 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 02:36:59,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:36:59,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:36:59,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167392134] [2023-12-22 02:36:59,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167392134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:36:59,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:36:59,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:36:59,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282620659] [2023-12-22 02:36:59,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:36:59,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:36:59,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:36:59,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:36:59,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:36:59,996 INFO L87 Difference]: Start difference. First operand 10700 states and 12958 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:37:01,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:01,279 INFO L93 Difference]: Finished difference Result 14705 states and 18088 transitions. [2023-12-22 02:37:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:37:01,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:37:01,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:01,299 INFO L225 Difference]: With dead ends: 14705 [2023-12-22 02:37:01,299 INFO L226 Difference]: Without dead ends: 10764 [2023-12-22 02:37:01,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 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 02:37:01,305 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 20 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:01,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1532 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:37:01,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10764 states. [2023-12-22 02:37:02,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10764 to 10708. [2023-12-22 02:37:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10708 states, 8748 states have (on average 1.2338820301783264) internal successors, (10794), 8931 states have internal predecessors, (10794), 908 states have call successors, (908), 767 states have call predecessors, (908), 1050 states have return successors, (1226), 1011 states have call predecessors, (1226), 905 states have call successors, (1226) [2023-12-22 02:37:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10708 states to 10708 states and 12928 transitions. [2023-12-22 02:37:02,605 INFO L78 Accepts]: Start accepts. Automaton has 10708 states and 12928 transitions. Word has length 142 [2023-12-22 02:37:02,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:02,606 INFO L495 AbstractCegarLoop]: Abstraction has 10708 states and 12928 transitions. [2023-12-22 02:37:02,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:37:02,606 INFO L276 IsEmpty]: Start isEmpty. Operand 10708 states and 12928 transitions. [2023-12-22 02:37:02,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:37:02,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:02,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:37:02,613 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 02:37:02,809 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 02:37:02,809 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:02,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:02,809 INFO L85 PathProgramCache]: Analyzing trace with hash -553895046, now seen corresponding path program 1 times [2023-12-22 02:37:02,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:02,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429661853] [2023-12-22 02:37:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:02,810 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 02:37:02,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:02,811 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 02:37:02,818 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 02:37:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:02,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:37:02,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:02,937 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 02:37:02,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:02,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:02,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429661853] [2023-12-22 02:37:02,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429661853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:02,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:02,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:37:02,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489188507] [2023-12-22 02:37:02,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:02,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:37:02,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:02,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:37:02,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:37:02,938 INFO L87 Difference]: Start difference. First operand 10708 states and 12928 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:37:04,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:04,234 INFO L93 Difference]: Finished difference Result 14697 states and 17996 transitions. [2023-12-22 02:37:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:37:04,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:37:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:04,255 INFO L225 Difference]: With dead ends: 14697 [2023-12-22 02:37:04,255 INFO L226 Difference]: Without dead ends: 10748 [2023-12-22 02:37:04,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 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 02:37:04,259 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 11 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:04,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1533 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:37:04,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10748 states. [2023-12-22 02:37:05,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10748 to 10716. [2023-12-22 02:37:05,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10716 states, 8756 states have (on average 1.2293284604842394) internal successors, (10764), 8939 states have internal predecessors, (10764), 908 states have call successors, (908), 767 states have call predecessors, (908), 1050 states have return successors, (1226), 1011 states have call predecessors, (1226), 905 states have call successors, (1226) [2023-12-22 02:37:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10716 states to 10716 states and 12898 transitions. [2023-12-22 02:37:05,518 INFO L78 Accepts]: Start accepts. Automaton has 10716 states and 12898 transitions. Word has length 142 [2023-12-22 02:37:05,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:05,518 INFO L495 AbstractCegarLoop]: Abstraction has 10716 states and 12898 transitions. [2023-12-22 02:37:05,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:37:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 10716 states and 12898 transitions. [2023-12-22 02:37:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:37:05,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:05,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:37:05,524 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 (47)] Ended with exit code 0 [2023-12-22 02:37:05,720 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 02:37:05,720 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:05,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:05,721 INFO L85 PathProgramCache]: Analyzing trace with hash -569413764, now seen corresponding path program 1 times [2023-12-22 02:37:05,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:05,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397076497] [2023-12-22 02:37:05,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:05,721 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 02:37:05,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:05,722 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 02:37:05,723 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 02:37:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:05,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:37:05,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:05,856 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 02:37:05,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:05,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:05,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397076497] [2023-12-22 02:37:05,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397076497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:05,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:05,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:37:05,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834180938] [2023-12-22 02:37:05,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:05,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:37:05,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:37:05,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:37:05,858 INFO L87 Difference]: Start difference. First operand 10716 states and 12898 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:37:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:07,153 INFO L93 Difference]: Finished difference Result 14689 states and 17904 transitions. [2023-12-22 02:37:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:37:07,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 142 [2023-12-22 02:37:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:07,170 INFO L225 Difference]: With dead ends: 14689 [2023-12-22 02:37:07,171 INFO L226 Difference]: Without dead ends: 10732 [2023-12-22 02:37:07,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 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 02:37:07,176 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 2 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:07,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1534 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:37:07,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10732 states. [2023-12-22 02:37:08,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10732 to 10724. [2023-12-22 02:37:08,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10724 states, 8764 states have (on average 1.2247832040164308) internal successors, (10734), 8947 states have internal predecessors, (10734), 908 states have call successors, (908), 767 states have call predecessors, (908), 1050 states have return successors, (1226), 1011 states have call predecessors, (1226), 905 states have call successors, (1226) [2023-12-22 02:37:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10724 states to 10724 states and 12868 transitions. [2023-12-22 02:37:08,475 INFO L78 Accepts]: Start accepts. Automaton has 10724 states and 12868 transitions. Word has length 142 [2023-12-22 02:37:08,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:08,475 INFO L495 AbstractCegarLoop]: Abstraction has 10724 states and 12868 transitions. [2023-12-22 02:37:08,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 02:37:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 10724 states and 12868 transitions. [2023-12-22 02:37:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:37:08,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:08,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:37:08,482 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 (48)] Ended with exit code 0 [2023-12-22 02:37:08,681 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 02:37:08,682 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:08,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:08,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1676165690, now seen corresponding path program 1 times [2023-12-22 02:37:08,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:08,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435664303] [2023-12-22 02:37:08,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:08,683 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 02:37:08,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:08,684 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 02:37:08,684 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 02:37:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:08,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:37:08,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:08,910 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 02:37:08,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:08,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:08,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435664303] [2023-12-22 02:37:08,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435664303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:08,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:08,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:37:08,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264321897] [2023-12-22 02:37:08,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:08,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:37:08,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:08,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:37:08,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:37:08,912 INFO L87 Difference]: Start difference. First operand 10724 states and 12868 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:37:10,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:10,545 INFO L93 Difference]: Finished difference Result 14690 states and 17747 transitions. [2023-12-22 02:37:10,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:37:10,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-22 02:37:10,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:10,561 INFO L225 Difference]: With dead ends: 14690 [2023-12-22 02:37:10,562 INFO L226 Difference]: Without dead ends: 10724 [2023-12-22 02:37:10,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 02:37:10,567 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 639 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:10,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 813 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:37:10,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10724 states. [2023-12-22 02:37:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10724 to 10724. [2023-12-22 02:37:11,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10724 states, 8764 states have (on average 1.223185759926974) internal successors, (10720), 8947 states have internal predecessors, (10720), 908 states have call successors, (908), 767 states have call predecessors, (908), 1050 states have return successors, (1226), 1011 states have call predecessors, (1226), 905 states have call successors, (1226) [2023-12-22 02:37:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10724 states to 10724 states and 12854 transitions. [2023-12-22 02:37:11,932 INFO L78 Accepts]: Start accepts. Automaton has 10724 states and 12854 transitions. Word has length 142 [2023-12-22 02:37:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:11,933 INFO L495 AbstractCegarLoop]: Abstraction has 10724 states and 12854 transitions. [2023-12-22 02:37:11,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:37:11,933 INFO L276 IsEmpty]: Start isEmpty. Operand 10724 states and 12854 transitions. [2023-12-22 02:37:11,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:37:11,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:11,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:37:11,940 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 (49)] Ended with exit code 0 [2023-12-22 02:37:12,135 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 02:37:12,136 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:12,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:12,136 INFO L85 PathProgramCache]: Analyzing trace with hash -567817608, now seen corresponding path program 1 times [2023-12-22 02:37:12,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:12,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606235430] [2023-12-22 02:37:12,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:12,137 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 02:37:12,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:12,138 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 02:37:12,139 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 02:37:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:12,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:37:12,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:37:12,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:12,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:12,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606235430] [2023-12-22 02:37:12,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606235430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:12,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:12,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:37:12,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643067192] [2023-12-22 02:37:12,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:12,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:37:12,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:12,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:37:12,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:37:12,396 INFO L87 Difference]: Start difference. First operand 10724 states and 12854 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:37:14,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:14,192 INFO L93 Difference]: Finished difference Result 15012 states and 18124 transitions. [2023-12-22 02:37:14,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:37:14,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-22 02:37:14,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:14,214 INFO L225 Difference]: With dead ends: 15012 [2023-12-22 02:37:14,214 INFO L226 Difference]: Without dead ends: 11046 [2023-12-22 02:37:14,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:37:14,220 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 757 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:14,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 808 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:37:14,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11046 states. [2023-12-22 02:37:15,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11046 to 10954. [2023-12-22 02:37:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10954 states, 8990 states have (on average 1.2166852057842046) internal successors, (10938), 9173 states have internal predecessors, (10938), 908 states have call successors, (908), 771 states have call predecessors, (908), 1054 states have return successors, (1226), 1011 states have call predecessors, (1226), 905 states have call successors, (1226) [2023-12-22 02:37:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10954 states to 10954 states and 13072 transitions. [2023-12-22 02:37:15,623 INFO L78 Accepts]: Start accepts. Automaton has 10954 states and 13072 transitions. Word has length 142 [2023-12-22 02:37:15,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:15,623 INFO L495 AbstractCegarLoop]: Abstraction has 10954 states and 13072 transitions. [2023-12-22 02:37:15,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:37:15,623 INFO L276 IsEmpty]: Start isEmpty. Operand 10954 states and 13072 transitions. [2023-12-22 02:37:15,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:37:15,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:15,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:37:15,630 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 02:37:15,826 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 02:37:15,827 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:15,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:15,827 INFO L85 PathProgramCache]: Analyzing trace with hash -505777994, now seen corresponding path program 1 times [2023-12-22 02:37:15,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:15,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055959675] [2023-12-22 02:37:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:15,828 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 02:37:15,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:15,830 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 02:37:15,833 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 02:37:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:15,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:37:15,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:16,058 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 02:37:16,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:16,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:16,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055959675] [2023-12-22 02:37:16,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055959675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:16,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:16,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:37:16,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139376805] [2023-12-22 02:37:16,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:16,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:37:16,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:16,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:37:16,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:37:16,060 INFO L87 Difference]: Start difference. First operand 10954 states and 13072 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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 02:37:17,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:17,595 INFO L93 Difference]: Finished difference Result 19253 states and 23174 transitions. [2023-12-22 02:37:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:37:17,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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 142 [2023-12-22 02:37:17,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:17,622 INFO L225 Difference]: With dead ends: 19253 [2023-12-22 02:37:17,622 INFO L226 Difference]: Without dead ends: 15058 [2023-12-22 02:37:17,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 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 02:37:17,631 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 393 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:17,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 865 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:37:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15058 states. [2023-12-22 02:37:19,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15058 to 15054. [2023-12-22 02:37:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15054 states, 12870 states have (on average 1.2118104118104118) internal successors, (15596), 13059 states have internal predecessors, (15596), 1022 states have call successors, (1022), 875 states have call predecessors, (1022), 1160 states have return successors, (1342), 1121 states have call predecessors, (1342), 1019 states have call successors, (1342) [2023-12-22 02:37:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15054 states to 15054 states and 17960 transitions. [2023-12-22 02:37:19,315 INFO L78 Accepts]: Start accepts. Automaton has 15054 states and 17960 transitions. Word has length 142 [2023-12-22 02:37:19,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:19,315 INFO L495 AbstractCegarLoop]: Abstraction has 15054 states and 17960 transitions. [2023-12-22 02:37:19,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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 02:37:19,316 INFO L276 IsEmpty]: Start isEmpty. Operand 15054 states and 17960 transitions. [2023-12-22 02:37:19,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-22 02:37:19,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:19,323 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 02:37:19,330 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 (51)] Forceful destruction successful, exit code 0 [2023-12-22 02:37:19,524 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 02:37:19,524 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:19,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash -252178978, now seen corresponding path program 1 times [2023-12-22 02:37:19,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:19,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368010220] [2023-12-22 02:37:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:19,526 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 02:37:19,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:19,527 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 02:37:19,527 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 02:37:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:19,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:37:19,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:19,674 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 02:37:19,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:19,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368010220] [2023-12-22 02:37:19,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368010220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:19,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:19,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 02:37:19,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320422310] [2023-12-22 02:37:19,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:19,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:37:19,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:19,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:37:19,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:37:19,677 INFO L87 Difference]: Start difference. First operand 15054 states and 17960 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 02:37:20,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:20,828 INFO L93 Difference]: Finished difference Result 18886 states and 22629 transitions. [2023-12-22 02:37:20,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:37:20,829 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 02:37:20,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:20,849 INFO L225 Difference]: With dead ends: 18886 [2023-12-22 02:37:20,850 INFO L226 Difference]: Without dead ends: 12153 [2023-12-22 02:37:20,858 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 02:37:20,859 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 32 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:20,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2509 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:37:20,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12153 states. [2023-12-22 02:37:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12153 to 11261. [2023-12-22 02:37:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11261 states, 10165 states have (on average 1.2095425479586817) internal successors, (12295), 10230 states have internal predecessors, (12295), 527 states have call successors, (527), 436 states have call predecessors, (527), 567 states have return successors, (663), 595 states have call predecessors, (663), 524 states have call successors, (663) [2023-12-22 02:37:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11261 states to 11261 states and 13485 transitions. [2023-12-22 02:37:21,757 INFO L78 Accepts]: Start accepts. Automaton has 11261 states and 13485 transitions. Word has length 217 [2023-12-22 02:37:21,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:21,757 INFO L495 AbstractCegarLoop]: Abstraction has 11261 states and 13485 transitions. [2023-12-22 02:37:21,757 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 02:37:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 11261 states and 13485 transitions. [2023-12-22 02:37:21,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-22 02:37:21,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:21,763 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 4, 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, 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] [2023-12-22 02:37:21,767 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 (52)] Ended with exit code 0 [2023-12-22 02:37:21,963 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 02:37:21,963 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:21,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:21,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1509966743, now seen corresponding path program 1 times [2023-12-22 02:37:21,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:21,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050588605] [2023-12-22 02:37:21,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:21,964 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 02:37:21,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:21,965 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 02:37:21,966 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 02:37:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:22,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:37:22,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-22 02:37:22,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:22,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:22,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050588605] [2023-12-22 02:37:22,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050588605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:22,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:22,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:37:22,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594491384] [2023-12-22 02:37:22,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:22,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:37:22,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:22,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:37:22,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:37:22,142 INFO L87 Difference]: Start difference. First operand 11261 states and 13485 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-22 02:37:23,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:23,001 INFO L93 Difference]: Finished difference Result 14088 states and 16918 transitions. [2023-12-22 02:37:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:37:23,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 229 [2023-12-22 02:37:23,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:23,018 INFO L225 Difference]: With dead ends: 14088 [2023-12-22 02:37:23,018 INFO L226 Difference]: Without dead ends: 11227 [2023-12-22 02:37:23,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 227 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 02:37:23,022 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 65 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:23,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1014 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:37:23,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11227 states. [2023-12-22 02:37:23,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11227 to 10946. [2023-12-22 02:37:23,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10946 states, 9907 states have (on average 1.20339154133441) internal successors, (11922), 9971 states have internal predecessors, (11922), 499 states have call successors, (499), 417 states have call predecessors, (499), 538 states have return successors, (625), 558 states have call predecessors, (625), 496 states have call successors, (625) [2023-12-22 02:37:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10946 states to 10946 states and 13046 transitions. [2023-12-22 02:37:23,862 INFO L78 Accepts]: Start accepts. Automaton has 10946 states and 13046 transitions. Word has length 229 [2023-12-22 02:37:23,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:23,863 INFO L495 AbstractCegarLoop]: Abstraction has 10946 states and 13046 transitions. [2023-12-22 02:37:23,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-22 02:37:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 10946 states and 13046 transitions. [2023-12-22 02:37:23,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-22 02:37:23,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:23,869 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 4, 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, 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 02:37:23,876 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 (53)] Forceful destruction successful, exit code 0 [2023-12-22 02:37:24,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /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 02:37:24,070 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:24,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:24,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1244158003, now seen corresponding path program 1 times [2023-12-22 02:37:24,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:24,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091208956] [2023-12-22 02:37:24,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:24,071 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 02:37:24,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:24,072 INFO L229 MonitoredProcess]: Starting monitored process 54 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 02:37:24,072 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 (54)] Waiting until timeout for monitored process [2023-12-22 02:37:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:24,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:37:24,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-22 02:37:24,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:24,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:24,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091208956] [2023-12-22 02:37:24,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091208956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:24,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:24,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-22 02:37:24,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483793970] [2023-12-22 02:37:24,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:24,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:37:24,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:24,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:37:24,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:37:24,236 INFO L87 Difference]: Start difference. First operand 10946 states and 13046 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 3 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-22 02:37:25,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:25,473 INFO L93 Difference]: Finished difference Result 12292 states and 14613 transitions. [2023-12-22 02:37:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:37:25,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 3 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 230 [2023-12-22 02:37:25,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:25,486 INFO L225 Difference]: With dead ends: 12292 [2023-12-22 02:37:25,486 INFO L226 Difference]: Without dead ends: 9730 [2023-12-22 02:37:25,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:37:25,489 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 241 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:25,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1067 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-22 02:37:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9730 states. [2023-12-22 02:37:26,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9730 to 9534. [2023-12-22 02:37:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9534 states, 8793 states have (on average 1.2031161150915501) internal successors, (10579), 8825 states have internal predecessors, (10579), 369 states have call successors, (369), 324 states have call predecessors, (369), 370 states have return successors, (438), 385 states have call predecessors, (438), 366 states have call successors, (438) [2023-12-22 02:37:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9534 states to 9534 states and 11386 transitions. [2023-12-22 02:37:26,079 INFO L78 Accepts]: Start accepts. Automaton has 9534 states and 11386 transitions. Word has length 230 [2023-12-22 02:37:26,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:26,079 INFO L495 AbstractCegarLoop]: Abstraction has 9534 states and 11386 transitions. [2023-12-22 02:37:26,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 3 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-22 02:37:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 9534 states and 11386 transitions. [2023-12-22 02:37:26,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-22 02:37:26,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:26,084 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 4, 4, 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, 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] [2023-12-22 02:37:26,090 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 (54)] Forceful destruction successful, exit code 0 [2023-12-22 02:37:26,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /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 02:37:26,289 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:26,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:26,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1469624375, now seen corresponding path program 1 times [2023-12-22 02:37:26,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:26,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512426371] [2023-12-22 02:37:26,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:26,290 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 02:37:26,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:26,291 INFO L229 MonitoredProcess]: Starting monitored process 55 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 02:37:26,292 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 (55)] Waiting until timeout for monitored process [2023-12-22 02:37:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:26,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:37:26,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-22 02:37:26,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:26,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:26,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512426371] [2023-12-22 02:37:26,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512426371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:26,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:26,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:37:26,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343904424] [2023-12-22 02:37:26,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:26,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:37:26,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:26,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:37:26,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:37:26,499 INFO L87 Difference]: Start difference. First operand 9534 states and 11386 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-22 02:37:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:27,113 INFO L93 Difference]: Finished difference Result 10648 states and 12706 transitions. [2023-12-22 02:37:27,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:37:27,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 231 [2023-12-22 02:37:27,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:27,129 INFO L225 Difference]: With dead ends: 10648 [2023-12-22 02:37:27,130 INFO L226 Difference]: Without dead ends: 9516 [2023-12-22 02:37:27,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 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 02:37:27,133 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 28 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:27,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 999 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:37:27,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9516 states. [2023-12-22 02:37:27,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9516 to 9513. [2023-12-22 02:37:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9513 states, 8775 states have (on average 1.2011396011396012) internal successors, (10540), 8807 states have internal predecessors, (10540), 369 states have call successors, (369), 324 states have call predecessors, (369), 367 states have return successors, (435), 382 states have call predecessors, (435), 366 states have call successors, (435) [2023-12-22 02:37:27,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9513 states to 9513 states and 11344 transitions. [2023-12-22 02:37:27,759 INFO L78 Accepts]: Start accepts. Automaton has 9513 states and 11344 transitions. Word has length 231 [2023-12-22 02:37:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:27,759 INFO L495 AbstractCegarLoop]: Abstraction has 9513 states and 11344 transitions. [2023-12-22 02:37:27,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-22 02:37:27,759 INFO L276 IsEmpty]: Start isEmpty. Operand 9513 states and 11344 transitions. [2023-12-22 02:37:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-22 02:37:27,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:27,763 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 4, 4, 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, 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] [2023-12-22 02:37:27,768 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 (55)] Ended with exit code 0 [2023-12-22 02:37:27,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /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 02:37:27,964 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:27,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:27,964 INFO L85 PathProgramCache]: Analyzing trace with hash 816976417, now seen corresponding path program 1 times [2023-12-22 02:37:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:27,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385377692] [2023-12-22 02:37:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:27,965 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 02:37:27,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:27,966 INFO L229 MonitoredProcess]: Starting monitored process 56 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 02:37:27,967 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 (56)] Waiting until timeout for monitored process [2023-12-22 02:37:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:28,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:37:28,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-22 02:37:28,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:28,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:28,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385377692] [2023-12-22 02:37:28,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385377692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:28,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:28,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-22 02:37:28,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538531507] [2023-12-22 02:37:28,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:28,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:37:28,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:28,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:37:28,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:37:28,140 INFO L87 Difference]: Start difference. First operand 9513 states and 11344 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 3 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-22 02:37:29,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:29,044 INFO L93 Difference]: Finished difference Result 9860 states and 11727 transitions. [2023-12-22 02:37:29,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:37:29,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 3 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 233 [2023-12-22 02:37:29,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:29,057 INFO L225 Difference]: With dead ends: 9860 [2023-12-22 02:37:29,057 INFO L226 Difference]: Without dead ends: 8313 [2023-12-22 02:37:29,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:37:29,061 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 226 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:29,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 823 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:37:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8313 states. [2023-12-22 02:37:29,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8313 to 8313. [2023-12-22 02:37:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8313 states, 7866 states have (on average 1.2100177981184845) internal successors, (9518), 7876 states have internal predecessors, (9518), 234 states have call successors, (234), 209 states have call predecessors, (234), 212 states have return successors, (236), 228 states have call predecessors, (236), 232 states have call successors, (236) [2023-12-22 02:37:29,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8313 states to 8313 states and 9988 transitions. [2023-12-22 02:37:29,465 INFO L78 Accepts]: Start accepts. Automaton has 8313 states and 9988 transitions. Word has length 233 [2023-12-22 02:37:29,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:29,466 INFO L495 AbstractCegarLoop]: Abstraction has 8313 states and 9988 transitions. [2023-12-22 02:37:29,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 3 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-22 02:37:29,466 INFO L276 IsEmpty]: Start isEmpty. Operand 8313 states and 9988 transitions. [2023-12-22 02:37:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-22 02:37:29,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:29,476 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:37:29,481 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 (56)] Ended with exit code 0 [2023-12-22 02:37:29,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /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 02:37:29,677 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:29,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:29,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1058953760, now seen corresponding path program 1 times [2023-12-22 02:37:29,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:29,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371209860] [2023-12-22 02:37:29,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:29,678 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 02:37:29,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:29,679 INFO L229 MonitoredProcess]: Starting monitored process 57 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 02:37:29,680 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 (57)] Waiting until timeout for monitored process [2023-12-22 02:37:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:29,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:37:29,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-22 02:37:29,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:29,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:29,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371209860] [2023-12-22 02:37:29,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371209860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:29,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:29,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:37:29,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637253908] [2023-12-22 02:37:29,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:29,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:37:29,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:29,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:37:29,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:37:29,951 INFO L87 Difference]: Start difference. First operand 8313 states and 9988 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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 02:37:30,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:30,631 INFO L93 Difference]: Finished difference Result 24194 states and 29229 transitions. [2023-12-22 02:37:30,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:37:30,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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 228 [2023-12-22 02:37:30,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:30,659 INFO L225 Difference]: With dead ends: 24194 [2023-12-22 02:37:30,660 INFO L226 Difference]: Without dead ends: 15899 [2023-12-22 02:37:30,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 226 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 02:37:30,679 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 280 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 756 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 02:37:30,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 756 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:37:30,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15899 states. [2023-12-22 02:37:31,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15899 to 15887. [2023-12-22 02:37:31,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15887 states, 15032 states have (on average 1.2044970729111228) internal successors, (18106), 15050 states have internal predecessors, (18106), 446 states have call successors, (446), 401 states have call predecessors, (446), 408 states have return successors, (452), 436 states have call predecessors, (452), 444 states have call successors, (452) [2023-12-22 02:37:31,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15887 states to 15887 states and 19004 transitions. [2023-12-22 02:37:31,414 INFO L78 Accepts]: Start accepts. Automaton has 15887 states and 19004 transitions. Word has length 228 [2023-12-22 02:37:31,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:31,415 INFO L495 AbstractCegarLoop]: Abstraction has 15887 states and 19004 transitions. [2023-12-22 02:37:31,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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 02:37:31,415 INFO L276 IsEmpty]: Start isEmpty. Operand 15887 states and 19004 transitions. [2023-12-22 02:37:31,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-22 02:37:31,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:31,420 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, 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, 1, 1, 1, 1] [2023-12-22 02:37:31,426 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 (57)] Ended with exit code 0 [2023-12-22 02:37:31,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /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 02:37:31,621 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:31,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:31,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1240073823, now seen corresponding path program 1 times [2023-12-22 02:37:31,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:31,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167902262] [2023-12-22 02:37:31,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:31,622 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 02:37:31,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:31,623 INFO L229 MonitoredProcess]: Starting monitored process 58 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 02:37:31,624 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 (58)] Waiting until timeout for monitored process [2023-12-22 02:37:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:31,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:37:31,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-22 02:37:31,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:31,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:31,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167902262] [2023-12-22 02:37:31,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167902262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:31,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:31,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:37:31,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925946289] [2023-12-22 02:37:31,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:31,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:37:31,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:31,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:37:31,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:37:31,952 INFO L87 Difference]: Start difference. First operand 15887 states and 19004 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 02:37:33,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:33,510 INFO L93 Difference]: Finished difference Result 47296 states and 56522 transitions. [2023-12-22 02:37:33,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:37:33,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 228 [2023-12-22 02:37:33,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:33,568 INFO L225 Difference]: With dead ends: 47296 [2023-12-22 02:37:33,568 INFO L226 Difference]: Without dead ends: 31428 [2023-12-22 02:37:33,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 226 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 02:37:33,599 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 558 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:33,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1159 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:37:33,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31428 states. [2023-12-22 02:37:35,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31428 to 31424. [2023-12-22 02:37:35,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31424 states, 29734 states have (on average 1.19876235958835) internal successors, (35644), 29777 states have internal predecessors, (35644), 873 states have call successors, (873), 785 states have call predecessors, (873), 816 states have return successors, (951), 863 states have call predecessors, (951), 871 states have call successors, (951) [2023-12-22 02:37:35,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31424 states to 31424 states and 37468 transitions. [2023-12-22 02:37:35,129 INFO L78 Accepts]: Start accepts. Automaton has 31424 states and 37468 transitions. Word has length 228 [2023-12-22 02:37:35,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:35,130 INFO L495 AbstractCegarLoop]: Abstraction has 31424 states and 37468 transitions. [2023-12-22 02:37:35,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 02:37:35,130 INFO L276 IsEmpty]: Start isEmpty. Operand 31424 states and 37468 transitions. [2023-12-22 02:37:35,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-22 02:37:35,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:35,140 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, 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, 1, 1, 1, 1] [2023-12-22 02:37:35,146 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 (58)] Ended with exit code 0 [2023-12-22 02:37:35,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /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 02:37:35,341 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:35,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:35,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2016321377, now seen corresponding path program 1 times [2023-12-22 02:37:35,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:35,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439491794] [2023-12-22 02:37:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:35,342 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 02:37:35,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:35,343 INFO L229 MonitoredProcess]: Starting monitored process 59 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 02:37:35,344 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 (59)] Waiting until timeout for monitored process [2023-12-22 02:37:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:35,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:37:35,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-22 02:37:35,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:35,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:35,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439491794] [2023-12-22 02:37:35,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439491794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:35,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:35,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:37:35,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419783416] [2023-12-22 02:37:35,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:35,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:37:35,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:35,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:37:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:37:35,489 INFO L87 Difference]: Start difference. First operand 31424 states and 37468 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 02:37:36,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:36,536 INFO L93 Difference]: Finished difference Result 55266 states and 65871 transitions. [2023-12-22 02:37:36,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:37:36,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 228 [2023-12-22 02:37:36,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:36,576 INFO L225 Difference]: With dead ends: 55266 [2023-12-22 02:37:36,576 INFO L226 Difference]: Without dead ends: 23861 [2023-12-22 02:37:36,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 226 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 02:37:36,606 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 427 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:36,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 395 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:37:36,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23861 states. [2023-12-22 02:37:37,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23861 to 23861. [2023-12-22 02:37:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23861 states, 22582 states have (on average 1.1986980781153131) internal successors, (27069), 22616 states have internal predecessors, (27069), 658 states have call successors, (658), 593 states have call predecessors, (658), 620 states have return successors, (708), 652 states have call predecessors, (708), 656 states have call successors, (708) [2023-12-22 02:37:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23861 states to 23861 states and 28435 transitions. [2023-12-22 02:37:37,741 INFO L78 Accepts]: Start accepts. Automaton has 23861 states and 28435 transitions. Word has length 228 [2023-12-22 02:37:37,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:37,741 INFO L495 AbstractCegarLoop]: Abstraction has 23861 states and 28435 transitions. [2023-12-22 02:37:37,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 02:37:37,742 INFO L276 IsEmpty]: Start isEmpty. Operand 23861 states and 28435 transitions. [2023-12-22 02:37:37,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-22 02:37:37,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:37,748 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, 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, 1, 1, 1, 1, 1, 1] [2023-12-22 02:37:37,754 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 (59)] Ended with exit code 0 [2023-12-22 02:37:37,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /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 02:37:37,949 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:37,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:37,949 INFO L85 PathProgramCache]: Analyzing trace with hash 525152250, now seen corresponding path program 1 times [2023-12-22 02:37:37,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:37,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459096990] [2023-12-22 02:37:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:37,950 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 02:37:37,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:37,951 INFO L229 MonitoredProcess]: Starting monitored process 60 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 02:37:37,952 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 (60)] Waiting until timeout for monitored process [2023-12-22 02:37:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:38,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:37:38,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-22 02:37:38,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:38,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:38,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459096990] [2023-12-22 02:37:38,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459096990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:38,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:38,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:37:38,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476453209] [2023-12-22 02:37:38,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:38,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:37:38,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:38,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:37:38,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:37:38,272 INFO L87 Difference]: Start difference. First operand 23861 states and 28435 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 02:37:40,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:40,879 INFO L93 Difference]: Finished difference Result 70041 states and 83447 transitions. [2023-12-22 02:37:40,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:37:40,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 230 [2023-12-22 02:37:40,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:40,959 INFO L225 Difference]: With dead ends: 70041 [2023-12-22 02:37:40,959 INFO L226 Difference]: Without dead ends: 46199 [2023-12-22 02:37:40,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 228 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 02:37:40,986 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 549 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:40,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 1138 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:37:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46199 states. [2023-12-22 02:37:43,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46199 to 46195. [2023-12-22 02:37:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46195 states, 43721 states have (on average 1.196518835342284) internal successors, (52313), 43796 states have internal predecessors, (52313), 1265 states have call successors, (1265), 1137 states have call predecessors, (1265), 1208 states have return successors, (1407), 1263 states have call predecessors, (1407), 1263 states have call successors, (1407) [2023-12-22 02:37:43,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46195 states to 46195 states and 54985 transitions. [2023-12-22 02:37:43,345 INFO L78 Accepts]: Start accepts. Automaton has 46195 states and 54985 transitions. Word has length 230 [2023-12-22 02:37:43,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:43,345 INFO L495 AbstractCegarLoop]: Abstraction has 46195 states and 54985 transitions. [2023-12-22 02:37:43,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 02:37:43,346 INFO L276 IsEmpty]: Start isEmpty. Operand 46195 states and 54985 transitions. [2023-12-22 02:37:43,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-22 02:37:43,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:43,359 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, 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, 1, 1, 1, 1, 1, 1] [2023-12-22 02:37:43,364 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 (60)] Ended with exit code 0 [2023-12-22 02:37:43,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /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 02:37:43,560 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:43,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:43,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1180977352, now seen corresponding path program 1 times [2023-12-22 02:37:43,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:43,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500905083] [2023-12-22 02:37:43,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:43,565 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 02:37:43,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:43,566 INFO L229 MonitoredProcess]: Starting monitored process 61 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 02:37:43,566 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 (61)] Waiting until timeout for monitored process [2023-12-22 02:37:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:43,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:37:43,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-22 02:37:43,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:43,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:43,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500905083] [2023-12-22 02:37:43,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500905083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:43,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:43,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:37:43,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302306116] [2023-12-22 02:37:43,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:43,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:37:43,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:43,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:37:43,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:37:43,720 INFO L87 Difference]: Start difference. First operand 46195 states and 54985 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 02:37:45,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:45,938 INFO L93 Difference]: Finished difference Result 92359 states and 109916 transitions. [2023-12-22 02:37:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:37:45,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 230 [2023-12-22 02:37:45,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:46,110 INFO L225 Difference]: With dead ends: 92359 [2023-12-22 02:37:46,110 INFO L226 Difference]: Without dead ends: 46183 [2023-12-22 02:37:46,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 228 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 02:37:46,156 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 425 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:46,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 394 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:37:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46183 states. [2023-12-22 02:37:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46183 to 46183. [2023-12-22 02:37:48,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46183 states, 43712 states have (on average 1.1963762811127379) internal successors, (52296), 43786 states have internal predecessors, (52296), 1262 states have call successors, (1262), 1137 states have call predecessors, (1262), 1208 states have return successors, (1404), 1260 states have call predecessors, (1404), 1260 states have call successors, (1404) [2023-12-22 02:37:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46183 states to 46183 states and 54962 transitions. [2023-12-22 02:37:48,566 INFO L78 Accepts]: Start accepts. Automaton has 46183 states and 54962 transitions. Word has length 230 [2023-12-22 02:37:48,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:48,566 INFO L495 AbstractCegarLoop]: Abstraction has 46183 states and 54962 transitions. [2023-12-22 02:37:48,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 02:37:48,566 INFO L276 IsEmpty]: Start isEmpty. Operand 46183 states and 54962 transitions. [2023-12-22 02:37:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-22 02:37:48,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:48,583 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:37:48,592 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 (61)] Forceful destruction successful, exit code 0 [2023-12-22 02:37:48,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /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 02:37:48,790 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:48,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:48,790 INFO L85 PathProgramCache]: Analyzing trace with hash 644463775, now seen corresponding path program 1 times [2023-12-22 02:37:48,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:48,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2693336] [2023-12-22 02:37:48,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:48,791 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 02:37:48,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:48,792 INFO L229 MonitoredProcess]: Starting monitored process 62 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 02:37:48,793 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 (62)] Waiting until timeout for monitored process [2023-12-22 02:37:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:48,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:37:48,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-22 02:37:49,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:49,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:49,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2693336] [2023-12-22 02:37:49,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2693336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:49,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:49,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:37:49,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043995868] [2023-12-22 02:37:49,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:49,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:37:49,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:49,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:37:49,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:37:49,139 INFO L87 Difference]: Start difference. First operand 46183 states and 54962 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 02:37:53,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:37:53,857 INFO L93 Difference]: Finished difference Result 137046 states and 163044 transitions. [2023-12-22 02:37:53,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:37:53,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 232 [2023-12-22 02:37:53,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:37:54,027 INFO L225 Difference]: With dead ends: 137046 [2023-12-22 02:37:54,028 INFO L226 Difference]: Without dead ends: 90882 [2023-12-22 02:37:54,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 230 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 02:37:54,067 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 545 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:37:54,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1102 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:37:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90882 states. [2023-12-22 02:37:58,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90882 to 90878. [2023-12-22 02:37:58,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90878 states, 86012 states have (on average 1.1946007533832488) internal successors, (102750), 86171 states have internal predecessors, (102750), 2473 states have call successors, (2473), 2225 states have call predecessors, (2473), 2392 states have return successors, (2807), 2483 states have call predecessors, (2807), 2471 states have call successors, (2807) [2023-12-22 02:37:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90878 states to 90878 states and 108030 transitions. [2023-12-22 02:37:59,044 INFO L78 Accepts]: Start accepts. Automaton has 90878 states and 108030 transitions. Word has length 232 [2023-12-22 02:37:59,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:37:59,045 INFO L495 AbstractCegarLoop]: Abstraction has 90878 states and 108030 transitions. [2023-12-22 02:37:59,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 02:37:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 90878 states and 108030 transitions. [2023-12-22 02:37:59,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-22 02:37:59,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:37:59,072 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:37:59,079 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 (62)] Ended with exit code 0 [2023-12-22 02:37:59,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /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 02:37:59,278 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:37:59,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:37:59,278 INFO L85 PathProgramCache]: Analyzing trace with hash -705946335, now seen corresponding path program 1 times [2023-12-22 02:37:59,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:37:59,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146719251] [2023-12-22 02:37:59,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:37:59,279 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 02:37:59,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:37:59,280 INFO L229 MonitoredProcess]: Starting monitored process 63 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 02:37:59,280 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 (63)] Waiting until timeout for monitored process [2023-12-22 02:37:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:37:59,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:37:59,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:37:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-22 02:37:59,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:37:59,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:37:59,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146719251] [2023-12-22 02:37:59,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146719251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:37:59,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:37:59,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:37:59,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333997269] [2023-12-22 02:37:59,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:37:59,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:37:59,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:37:59,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:37:59,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:37:59,423 INFO L87 Difference]: Start difference. First operand 90878 states and 108030 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 02:38:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:38:03,127 INFO L93 Difference]: Finished difference Result 159780 states and 190009 transitions. [2023-12-22 02:38:03,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:38:03,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 232 [2023-12-22 02:38:03,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:38:03,278 INFO L225 Difference]: With dead ends: 159780 [2023-12-22 02:38:03,278 INFO L226 Difference]: Without dead ends: 68921 [2023-12-22 02:38:03,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 230 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 02:38:03,352 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 423 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:38:03,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 393 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:38:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68921 states. [2023-12-22 02:38:07,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68921 to 68921. [2023-12-22 02:38:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68921 states, 65242 states have (on average 1.1959627233990375) internal successors, (78027), 65364 states have internal predecessors, (78027), 1866 states have call successors, (1866), 1681 states have call predecessors, (1866), 1812 states have return successors, (2116), 1876 states have call predecessors, (2116), 1864 states have call successors, (2116) [2023-12-22 02:38:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68921 states to 68921 states and 82009 transitions. [2023-12-22 02:38:07,209 INFO L78 Accepts]: Start accepts. Automaton has 68921 states and 82009 transitions. Word has length 232 [2023-12-22 02:38:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:38:07,209 INFO L495 AbstractCegarLoop]: Abstraction has 68921 states and 82009 transitions. [2023-12-22 02:38:07,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 02:38:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 68921 states and 82009 transitions. [2023-12-22 02:38:07,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-22 02:38:07,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:38:07,230 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:38:07,236 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 (63)] Ended with exit code 0 [2023-12-22 02:38:07,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /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 02:38:07,431 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:38:07,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:38:07,431 INFO L85 PathProgramCache]: Analyzing trace with hash 168850682, now seen corresponding path program 1 times [2023-12-22 02:38:07,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:38:07,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893168693] [2023-12-22 02:38:07,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:38:07,432 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 02:38:07,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:38:07,433 INFO L229 MonitoredProcess]: Starting monitored process 64 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 02:38:07,448 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 (64)] Waiting until timeout for monitored process [2023-12-22 02:38:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:38:07,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:38:07,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:38:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-22 02:38:07,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:38:07,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:38:07,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893168693] [2023-12-22 02:38:07,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893168693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:38:07,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:38:07,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:38:07,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639680095] [2023-12-22 02:38:07,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:38:07,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:38:07,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:38:07,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:38:07,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:38:07,768 INFO L87 Difference]: Start difference. First operand 68921 states and 82009 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 02:38:14,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:38:14,369 INFO L93 Difference]: Finished difference Result 202129 states and 240471 transitions. [2023-12-22 02:38:14,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:38:14,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 234 [2023-12-22 02:38:14,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:38:14,663 INFO L225 Difference]: With dead ends: 202129 [2023-12-22 02:38:14,663 INFO L226 Difference]: Without dead ends: 133227 [2023-12-22 02:38:14,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 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 02:38:14,744 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 566 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:38:14,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 782 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:38:14,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133227 states. [2023-12-22 02:38:21,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133227 to 133223. [2023-12-22 02:38:21,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133223 states, 126112 states have (on average 1.1947713143872114) internal successors, (150675), 126378 states have internal predecessors, (150675), 3582 states have call successors, (3582), 3217 states have call predecessors, (3582), 3528 states have return successors, (4144), 3628 states have call predecessors, (4144), 3580 states have call successors, (4144) [2023-12-22 02:38:22,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133223 states to 133223 states and 158401 transitions. [2023-12-22 02:38:22,040 INFO L78 Accepts]: Start accepts. Automaton has 133223 states and 158401 transitions. Word has length 234 [2023-12-22 02:38:22,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:38:22,040 INFO L495 AbstractCegarLoop]: Abstraction has 133223 states and 158401 transitions. [2023-12-22 02:38:22,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 02:38:22,041 INFO L276 IsEmpty]: Start isEmpty. Operand 133223 states and 158401 transitions. [2023-12-22 02:38:22,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-22 02:38:22,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:38:22,080 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:38:22,088 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 (64)] Forceful destruction successful, exit code 0 [2023-12-22 02:38:22,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /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 02:38:22,283 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:38:22,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:38:22,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2000210655, now seen corresponding path program 1 times [2023-12-22 02:38:22,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:38:22,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632627605] [2023-12-22 02:38:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:38:22,284 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 02:38:22,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:38:22,285 INFO L229 MonitoredProcess]: Starting monitored process 65 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 02:38:22,286 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 (65)] Waiting until timeout for monitored process [2023-12-22 02:38:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:38:22,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:38:22,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:38:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-22 02:38:22,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:38:22,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:38:22,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632627605] [2023-12-22 02:38:22,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632627605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:38:22,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:38:22,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:38:22,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266792365] [2023-12-22 02:38:22,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:38:22,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:38:22,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:38:22,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:38:22,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:38:22,619 INFO L87 Difference]: Start difference. First operand 133223 states and 158401 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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)