/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 08:10:35,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 08:10:35,802 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 08:10:35,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 08:10:35,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 08:10:35,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 08:10:35,821 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 08:10:35,822 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 08:10:35,822 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 08:10:35,822 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 08:10:35,823 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 08:10:35,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 08:10:35,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 08:10:35,823 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 08:10:35,824 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 08:10:35,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 08:10:35,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 08:10:35,830 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 08:10:35,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 08:10:35,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 08:10:35,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 08:10:35,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 08:10:35,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 08:10:35,832 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 08:10:35,832 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 08:10:35,832 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 08:10:35,833 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 08:10:35,833 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 08:10:35,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 08:10:35,833 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 08:10:35,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 08:10:35,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 08:10:35,834 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 08:10:35,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 08:10:35,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 08:10:35,834 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 08:10:35,834 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 08:10:35,835 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 08:10:35,835 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 08:10:35,835 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 08:10:35,835 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 08:10:35,835 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 08:10:35,835 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 08:10:35,835 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 08:10:35,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 08:10:35,836 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 08:10:35,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 08:10:36,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 08:10:36,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 08:10:36,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 08:10:36,067 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 08:10:36,067 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 08:10:36,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2023-12-16 08:10:37,145 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 08:10:37,377 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 08:10:37,378 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2023-12-16 08:10:37,394 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4eea45399/bdf7fe3cecf14144b63114af984aa363/FLAG744e6819d [2023-12-16 08:10:37,407 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4eea45399/bdf7fe3cecf14144b63114af984aa363 [2023-12-16 08:10:37,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 08:10:37,411 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 08:10:37,412 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 08:10:37,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 08:10:37,416 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 08:10:37,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:10:37" (1/1) ... [2023-12-16 08:10:37,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d61e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37, skipping insertion in model container [2023-12-16 08:10:37,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:10:37" (1/1) ... [2023-12-16 08:10:37,458 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 08:10:37,581 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c[914,927] [2023-12-16 08:10:37,639 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c[7115,7128] [2023-12-16 08:10:37,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 08:10:37,731 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 08:10:37,738 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c[914,927] [2023-12-16 08:10:37,762 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c[7115,7128] [2023-12-16 08:10:37,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 08:10:37,810 INFO L206 MainTranslator]: Completed translation [2023-12-16 08:10:37,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37 WrapperNode [2023-12-16 08:10:37,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 08:10:37,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 08:10:37,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 08:10:37,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 08:10:37,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37" (1/1) ... [2023-12-16 08:10:37,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37" (1/1) ... [2023-12-16 08:10:37,869 INFO L138 Inliner]: procedures = 70, calls = 82, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 802 [2023-12-16 08:10:37,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 08:10:37,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 08:10:37,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 08:10:37,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 08:10:37,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37" (1/1) ... [2023-12-16 08:10:37,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37" (1/1) ... [2023-12-16 08:10:37,892 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37" (1/1) ... [2023-12-16 08:10:37,919 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]. [2023-12-16 08:10:37,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37" (1/1) ... [2023-12-16 08:10:37,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37" (1/1) ... [2023-12-16 08:10:37,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37" (1/1) ... [2023-12-16 08:10:37,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37" (1/1) ... [2023-12-16 08:10:37,956 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37" (1/1) ... [2023-12-16 08:10:37,958 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37" (1/1) ... [2023-12-16 08:10:37,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 08:10:37,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 08:10:37,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 08:10:37,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 08:10:37,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37" (1/1) ... [2023-12-16 08:10:37,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 08:10:37,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 08:10:37,989 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) [2023-12-16 08:10:38,024 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 [2023-12-16 08:10:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 08:10:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 08:10:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 08:10:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-16 08:10:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-16 08:10:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-16 08:10:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-16 08:10:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-16 08:10:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-16 08:10:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-16 08:10:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-16 08:10:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-16 08:10:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-16 08:10:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-16 08:10:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-16 08:10:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-16 08:10:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-16 08:10:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 08:10:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-16 08:10:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-16 08:10:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-16 08:10:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-16 08:10:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-16 08:10:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-16 08:10:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-16 08:10:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-16 08:10:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-16 08:10:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-16 08:10:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 08:10:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 08:10:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-16 08:10:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-16 08:10:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-16 08:10:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-16 08:10:38,160 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 08:10:38,163 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 08:10:38,892 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 08:10:38,945 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 08:10:38,945 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-12-16 08:10:38,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:10:38 BoogieIcfgContainer [2023-12-16 08:10:38,945 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 08:10:38,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 08:10:38,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 08:10:38,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 08:10:38,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:10:37" (1/3) ... [2023-12-16 08:10:38,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2274be8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:10:38, skipping insertion in model container [2023-12-16 08:10:38,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:10:37" (2/3) ... [2023-12-16 08:10:38,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2274be8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:10:38, skipping insertion in model container [2023-12-16 08:10:38,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:10:38" (3/3) ... [2023-12-16 08:10:38,951 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2023-12-16 08:10:38,965 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 08:10:38,965 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 08:10:39,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 08:10:39,010 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;@d9058a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 08:10:39,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 08:10:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 355 states, 299 states have (on average 1.7023411371237458) internal successors, (509), 307 states have internal predecessors, (509), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-16 08:10:39,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 08:10:39,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:39,023 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] [2023-12-16 08:10:39,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:39,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:39,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1642674397, now seen corresponding path program 1 times [2023-12-16 08:10:39,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:39,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113293128] [2023-12-16 08:10:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:39,035 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 [2023-12-16 08:10:39,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:39,038 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) [2023-12-16 08:10:39,041 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 [2023-12-16 08:10:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:39,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 08:10:39,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:39,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:39,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:39,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113293128] [2023-12-16 08:10:39,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113293128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:39,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:39,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 08:10:39,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267679734] [2023-12-16 08:10:39,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:39,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:10:39,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:39,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:10:39,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:10:39,237 INFO L87 Difference]: Start difference. First operand has 355 states, 299 states have (on average 1.7023411371237458) internal successors, (509), 307 states have internal predecessors, (509), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:10:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:39,960 INFO L93 Difference]: Finished difference Result 783 states and 1285 transitions. [2023-12-16 08:10:39,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:10:39,962 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 [2023-12-16 08:10:39,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:39,972 INFO L225 Difference]: With dead ends: 783 [2023-12-16 08:10:39,972 INFO L226 Difference]: Without dead ends: 444 [2023-12-16 08:10:39,976 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 [2023-12-16 08:10:39,979 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 374 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:39,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1055 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 08:10:39,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-12-16 08:10:40,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 437. [2023-12-16 08:10:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 364 states have (on average 1.5631868131868132) internal successors, (569), 371 states have internal predecessors, (569), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (50), 46 states have call predecessors, (50), 45 states have call successors, (50) [2023-12-16 08:10:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 668 transitions. [2023-12-16 08:10:40,032 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 668 transitions. Word has length 58 [2023-12-16 08:10:40,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:40,032 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 668 transitions. [2023-12-16 08:10:40,032 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) [2023-12-16 08:10:40,033 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 668 transitions. [2023-12-16 08:10:40,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 08:10:40,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:40,035 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] [2023-12-16 08:10:40,042 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 (2)] Forceful destruction successful, exit code 0 [2023-12-16 08:10:40,239 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 [2023-12-16 08:10:40,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:40,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:40,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1776908061, now seen corresponding path program 1 times [2023-12-16 08:10:40,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:40,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894215781] [2023-12-16 08:10:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:40,241 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 [2023-12-16 08:10:40,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:40,243 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) [2023-12-16 08:10:40,245 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 [2023-12-16 08:10:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:40,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 08:10:40,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:40,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:40,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:40,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894215781] [2023-12-16 08:10:40,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894215781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:40,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:40,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 08:10:40,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957940056] [2023-12-16 08:10:40,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:40,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:10:40,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:40,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:10:40,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:10:40,376 INFO L87 Difference]: Start difference. First operand 437 states and 668 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:10:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:41,084 INFO L93 Difference]: Finished difference Result 796 states and 1189 transitions. [2023-12-16 08:10:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:10:41,084 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 [2023-12-16 08:10:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:41,088 INFO L225 Difference]: With dead ends: 796 [2023-12-16 08:10:41,088 INFO L226 Difference]: Without dead ends: 632 [2023-12-16 08:10:41,089 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 [2023-12-16 08:10:41,090 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 363 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:41,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1051 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 08:10:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-12-16 08:10:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 624. [2023-12-16 08:10:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 507 states have (on average 1.5128205128205128) internal successors, (767), 522 states have internal predecessors, (767), 71 states have call successors, (71), 36 states have call predecessors, (71), 44 states have return successors, (92), 70 states have call predecessors, (92), 67 states have call successors, (92) [2023-12-16 08:10:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 930 transitions. [2023-12-16 08:10:41,134 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 930 transitions. Word has length 58 [2023-12-16 08:10:41,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:41,134 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 930 transitions. [2023-12-16 08:10:41,134 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) [2023-12-16 08:10:41,134 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 930 transitions. [2023-12-16 08:10:41,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 08:10:41,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:41,137 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] [2023-12-16 08:10:41,150 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 [2023-12-16 08:10:41,341 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 [2023-12-16 08:10:41,341 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:41,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:41,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1197404508, now seen corresponding path program 1 times [2023-12-16 08:10:41,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:41,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244304163] [2023-12-16 08:10:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:41,343 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 [2023-12-16 08:10:41,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:41,344 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) [2023-12-16 08:10:41,377 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 [2023-12-16 08:10:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:41,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 08:10:41,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:41,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:41,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:41,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244304163] [2023-12-16 08:10:41,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244304163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:41,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:41,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 08:10:41,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237936311] [2023-12-16 08:10:41,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:41,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 08:10:41,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:41,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 08:10:41,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:10:41,443 INFO L87 Difference]: Start difference. First operand 624 states and 930 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:10:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:41,582 INFO L93 Difference]: Finished difference Result 979 states and 1427 transitions. [2023-12-16 08:10:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:10:41,582 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 [2023-12-16 08:10:41,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:41,585 INFO L225 Difference]: With dead ends: 979 [2023-12-16 08:10:41,586 INFO L226 Difference]: Without dead ends: 642 [2023-12-16 08:10:41,586 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 [2023-12-16 08:10:41,587 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 6 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:41,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2505 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:10:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-12-16 08:10:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 632. [2023-12-16 08:10:41,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 513 states have (on average 1.5029239766081872) internal successors, (771), 528 states have internal predecessors, (771), 71 states have call successors, (71), 36 states have call predecessors, (71), 46 states have return successors, (94), 72 states have call predecessors, (94), 67 states have call successors, (94) [2023-12-16 08:10:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 936 transitions. [2023-12-16 08:10:41,614 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 936 transitions. Word has length 58 [2023-12-16 08:10:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:41,614 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 936 transitions. [2023-12-16 08:10:41,614 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) [2023-12-16 08:10:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 936 transitions. [2023-12-16 08:10:41,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 08:10:41,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:41,619 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] [2023-12-16 08:10:41,625 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 [2023-12-16 08:10:41,823 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 [2023-12-16 08:10:41,823 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:41,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash 853579490, now seen corresponding path program 1 times [2023-12-16 08:10:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:41,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286810722] [2023-12-16 08:10:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:41,825 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 [2023-12-16 08:10:41,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:41,827 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) [2023-12-16 08:10:41,857 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 [2023-12-16 08:10:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:41,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 08:10:41,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:42,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:42,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:42,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286810722] [2023-12-16 08:10:42,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286810722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:42,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:42,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 08:10:42,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036431634] [2023-12-16 08:10:42,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:42,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 08:10:42,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:42,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 08:10:42,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:10:42,002 INFO L87 Difference]: Start difference. First operand 632 states and 936 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:10:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:42,136 INFO L93 Difference]: Finished difference Result 989 states and 1429 transitions. [2023-12-16 08:10:42,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:10:42,137 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 [2023-12-16 08:10:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:42,140 INFO L225 Difference]: With dead ends: 989 [2023-12-16 08:10:42,140 INFO L226 Difference]: Without dead ends: 644 [2023-12-16 08:10:42,141 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 [2023-12-16 08:10:42,141 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 3 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:42,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2505 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:10:42,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2023-12-16 08:10:42,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 640. [2023-12-16 08:10:42,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 519 states have (on average 1.4932562620423893) internal successors, (775), 534 states have internal predecessors, (775), 71 states have call successors, (71), 36 states have call predecessors, (71), 48 states have return successors, (96), 74 states have call predecessors, (96), 67 states have call successors, (96) [2023-12-16 08:10:42,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 942 transitions. [2023-12-16 08:10:42,179 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 942 transitions. Word has length 58 [2023-12-16 08:10:42,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:42,179 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 942 transitions. [2023-12-16 08:10:42,179 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) [2023-12-16 08:10:42,180 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 942 transitions. [2023-12-16 08:10:42,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 08:10:42,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:42,181 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] [2023-12-16 08:10:42,199 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 (5)] Forceful destruction successful, exit code 0 [2023-12-16 08:10:42,381 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 [2023-12-16 08:10:42,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:42,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:42,383 INFO L85 PathProgramCache]: Analyzing trace with hash 915619104, now seen corresponding path program 1 times [2023-12-16 08:10:42,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:42,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162761549] [2023-12-16 08:10:42,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:42,383 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 [2023-12-16 08:10:42,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:42,384 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) [2023-12-16 08:10:42,387 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 [2023-12-16 08:10:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:42,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:10:42,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:42,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:42,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:42,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162761549] [2023-12-16 08:10:42,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162761549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:42,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:42,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:10:42,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362601777] [2023-12-16 08:10:42,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:42,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:10:42,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:42,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:10:42,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:10:42,500 INFO L87 Difference]: Start difference. First operand 640 states and 942 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 08:10:43,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:43,011 INFO L93 Difference]: Finished difference Result 1338 states and 1889 transitions. [2023-12-16 08:10:43,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:10:43,011 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 [2023-12-16 08:10:43,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:43,015 INFO L225 Difference]: With dead ends: 1338 [2023-12-16 08:10:43,015 INFO L226 Difference]: Without dead ends: 989 [2023-12-16 08:10:43,016 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 [2023-12-16 08:10:43,017 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 733 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:43,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 553 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:10:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2023-12-16 08:10:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 985. [2023-12-16 08:10:43,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 774 states have (on average 1.434108527131783) internal successors, (1110), 804 states have internal predecessors, (1110), 117 states have call successors, (117), 64 states have call predecessors, (117), 92 states have return successors, (181), 125 states have call predecessors, (181), 113 states have call successors, (181) [2023-12-16 08:10:43,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1408 transitions. [2023-12-16 08:10:43,074 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1408 transitions. Word has length 58 [2023-12-16 08:10:43,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:43,075 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1408 transitions. [2023-12-16 08:10:43,075 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) [2023-12-16 08:10:43,075 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1408 transitions. [2023-12-16 08:10:43,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 08:10:43,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:43,077 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] [2023-12-16 08:10:43,087 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 [2023-12-16 08:10:43,280 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 [2023-12-16 08:10:43,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:43,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:43,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1446148718, now seen corresponding path program 1 times [2023-12-16 08:10:43,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:43,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909642770] [2023-12-16 08:10:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:43,282 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 [2023-12-16 08:10:43,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:43,283 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) [2023-12-16 08:10:43,285 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 [2023-12-16 08:10:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:43,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:10:43,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:43,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:43,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:43,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909642770] [2023-12-16 08:10:43,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909642770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:43,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:43,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:10:43,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793533242] [2023-12-16 08:10:43,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:43,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:10:43,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:43,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:10:43,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:10:43,412 INFO L87 Difference]: Start difference. First operand 985 states and 1408 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:10:43,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:43,529 INFO L93 Difference]: Finished difference Result 2299 states and 3179 transitions. [2023-12-16 08:10:43,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:10:43,530 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 [2023-12-16 08:10:43,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:43,536 INFO L225 Difference]: With dead ends: 2299 [2023-12-16 08:10:43,536 INFO L226 Difference]: Without dead ends: 1617 [2023-12-16 08:10:43,538 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 [2023-12-16 08:10:43,538 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 482 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:43,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 609 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:10:43,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2023-12-16 08:10:43,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1573. [2023-12-16 08:10:43,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1214 states have (on average 1.3772652388797364) internal successors, (1672), 1266 states have internal predecessors, (1672), 183 states have call successors, (183), 120 states have call predecessors, (183), 174 states have return successors, (295), 195 states have call predecessors, (295), 179 states have call successors, (295) [2023-12-16 08:10:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2150 transitions. [2023-12-16 08:10:43,628 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2150 transitions. Word has length 59 [2023-12-16 08:10:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:43,628 INFO L495 AbstractCegarLoop]: Abstraction has 1573 states and 2150 transitions. [2023-12-16 08:10:43,628 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) [2023-12-16 08:10:43,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2150 transitions. [2023-12-16 08:10:43,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 08:10:43,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:43,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:10:43,637 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 [2023-12-16 08:10:43,838 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 [2023-12-16 08:10:43,838 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:43,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:43,839 INFO L85 PathProgramCache]: Analyzing trace with hash 221499874, now seen corresponding path program 1 times [2023-12-16 08:10:43,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:43,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326135199] [2023-12-16 08:10:43,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:43,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:43,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:43,840 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) [2023-12-16 08:10:43,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 08:10:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:43,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:10:43,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:43,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:43,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:43,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:43,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326135199] [2023-12-16 08:10:43,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326135199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:43,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:43,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:10:43,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975246429] [2023-12-16 08:10:43,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:43,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:10:43,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:43,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:10:43,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:10:43,992 INFO L87 Difference]: Start difference. First operand 1573 states and 2150 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:10:44,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:44,175 INFO L93 Difference]: Finished difference Result 3989 states and 5319 transitions. [2023-12-16 08:10:44,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:10:44,175 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 [2023-12-16 08:10:44,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:44,184 INFO L225 Difference]: With dead ends: 3989 [2023-12-16 08:10:44,184 INFO L226 Difference]: Without dead ends: 2691 [2023-12-16 08:10:44,186 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 [2023-12-16 08:10:44,187 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 63 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:44,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 973 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:10:44,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2023-12-16 08:10:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2659. [2023-12-16 08:10:44,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2659 states, 2032 states have (on average 1.3351377952755905) internal successors, (2713), 2105 states have internal predecessors, (2713), 303 states have call successors, (303), 232 states have call predecessors, (303), 322 states have return successors, (473), 326 states have call predecessors, (473), 299 states have call successors, (473) [2023-12-16 08:10:44,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2659 states to 2659 states and 3489 transitions. [2023-12-16 08:10:44,291 INFO L78 Accepts]: Start accepts. Automaton has 2659 states and 3489 transitions. Word has length 60 [2023-12-16 08:10:44,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:44,292 INFO L495 AbstractCegarLoop]: Abstraction has 2659 states and 3489 transitions. [2023-12-16 08:10:44,292 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) [2023-12-16 08:10:44,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2659 states and 3489 transitions. [2023-12-16 08:10:44,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 08:10:44,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:44,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:10:44,309 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 (8)] Ended with exit code 0 [2023-12-16 08:10:44,496 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 [2023-12-16 08:10:44,502 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:44,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1574263521, now seen corresponding path program 1 times [2023-12-16 08:10:44,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:44,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106341314] [2023-12-16 08:10:44,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:44,503 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 [2023-12-16 08:10:44,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:44,506 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) [2023-12-16 08:10:44,550 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 [2023-12-16 08:10:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:44,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:10:44,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:44,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:44,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:44,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106341314] [2023-12-16 08:10:44,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106341314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:44,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:44,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:10:44,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017477835] [2023-12-16 08:10:44,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:44,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:10:44,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:10:44,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:10:44,674 INFO L87 Difference]: Start difference. First operand 2659 states and 3489 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:10:44,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:44,970 INFO L93 Difference]: Finished difference Result 5595 states and 7227 transitions. [2023-12-16 08:10:44,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:10:44,971 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 [2023-12-16 08:10:44,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:44,982 INFO L225 Difference]: With dead ends: 5595 [2023-12-16 08:10:44,982 INFO L226 Difference]: Without dead ends: 3219 [2023-12-16 08:10:44,986 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 [2023-12-16 08:10:44,987 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 477 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:44,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 609 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:10:44,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2023-12-16 08:10:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3175. [2023-12-16 08:10:45,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3175 states, 2420 states have (on average 1.3161157024793388) internal successors, (3185), 2501 states have internal predecessors, (3185), 367 states have call successors, (367), 288 states have call predecessors, (367), 386 states have return successors, (556), 390 states have call predecessors, (556), 363 states have call successors, (556) [2023-12-16 08:10:45,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 4108 transitions. [2023-12-16 08:10:45,126 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 4108 transitions. Word has length 66 [2023-12-16 08:10:45,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:45,127 INFO L495 AbstractCegarLoop]: Abstraction has 3175 states and 4108 transitions. [2023-12-16 08:10:45,127 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) [2023-12-16 08:10:45,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 4108 transitions. [2023-12-16 08:10:45,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-16 08:10:45,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:45,128 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] [2023-12-16 08:10:45,136 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 (9)] Ended with exit code 0 [2023-12-16 08:10:45,332 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 [2023-12-16 08:10:45,332 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:45,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:45,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1040856206, now seen corresponding path program 1 times [2023-12-16 08:10:45,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:45,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353003117] [2023-12-16 08:10:45,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:45,333 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 [2023-12-16 08:10:45,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:45,334 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) [2023-12-16 08:10:45,351 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 [2023-12-16 08:10:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:45,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:10:45,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:45,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:45,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:45,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:45,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353003117] [2023-12-16 08:10:45,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353003117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:45,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:45,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:10:45,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216660896] [2023-12-16 08:10:45,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:45,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:10:45,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:45,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:10:45,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:10:45,425 INFO L87 Difference]: Start difference. First operand 3175 states and 4108 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:10:45,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:45,767 INFO L93 Difference]: Finished difference Result 3795 states and 4881 transitions. [2023-12-16 08:10:45,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:10:45,768 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 [2023-12-16 08:10:45,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:45,782 INFO L225 Difference]: With dead ends: 3795 [2023-12-16 08:10:45,782 INFO L226 Difference]: Without dead ends: 3792 [2023-12-16 08:10:45,784 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 [2023-12-16 08:10:45,786 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 997 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:45,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 592 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 08:10:45,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3792 states. [2023-12-16 08:10:46,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3792 to 3758. [2023-12-16 08:10:46,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 2858 states have (on average 1.3065080475857243) internal successors, (3734), 2953 states have internal predecessors, (3734), 432 states have call successors, (432), 344 states have call predecessors, (432), 466 states have return successors, (659), 465 states have call predecessors, (659), 429 states have call successors, (659) [2023-12-16 08:10:46,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 4825 transitions. [2023-12-16 08:10:46,134 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 4825 transitions. Word has length 67 [2023-12-16 08:10:46,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:46,136 INFO L495 AbstractCegarLoop]: Abstraction has 3758 states and 4825 transitions. [2023-12-16 08:10:46,136 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) [2023-12-16 08:10:46,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 4825 transitions. [2023-12-16 08:10:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 08:10:46,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:46,141 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] [2023-12-16 08:10:46,157 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 [2023-12-16 08:10:46,346 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 [2023-12-16 08:10:46,347 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:46,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:46,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2094372661, now seen corresponding path program 1 times [2023-12-16 08:10:46,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:46,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423276716] [2023-12-16 08:10:46,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:46,353 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 [2023-12-16 08:10:46,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:46,370 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) [2023-12-16 08:10:46,416 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 [2023-12-16 08:10:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:46,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 08:10:46,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:46,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 08:10:46,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:46,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:46,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423276716] [2023-12-16 08:10:46,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423276716] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 08:10:46,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 08:10:46,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2023-12-16 08:10:46,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207285854] [2023-12-16 08:10:46,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 08:10:46,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 08:10:46,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:46,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 08:10:46,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 08:10:46,870 INFO L87 Difference]: Start difference. First operand 3758 states and 4825 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 08:10:47,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:47,612 INFO L93 Difference]: Finished difference Result 8297 states and 10581 transitions. [2023-12-16 08:10:47,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 08:10:47,612 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 [2023-12-16 08:10:47,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:47,649 INFO L225 Difference]: With dead ends: 8297 [2023-12-16 08:10:47,650 INFO L226 Difference]: Without dead ends: 8294 [2023-12-16 08:10:47,654 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 [2023-12-16 08:10:47,655 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 1376 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:47,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 1826 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:10:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8294 states. [2023-12-16 08:10:48,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8294 to 6112. [2023-12-16 08:10:48,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6112 states, 4632 states have (on average 1.2983592400690847) internal successors, (6014), 4793 states have internal predecessors, (6014), 696 states have call successors, (696), 568 states have call predecessors, (696), 782 states have return successors, (1093), 755 states have call predecessors, (1093), 693 states have call successors, (1093) [2023-12-16 08:10:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6112 states to 6112 states and 7803 transitions. [2023-12-16 08:10:48,064 INFO L78 Accepts]: Start accepts. Automaton has 6112 states and 7803 transitions. Word has length 68 [2023-12-16 08:10:48,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:48,064 INFO L495 AbstractCegarLoop]: Abstraction has 6112 states and 7803 transitions. [2023-12-16 08:10:48,065 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) [2023-12-16 08:10:48,065 INFO L276 IsEmpty]: Start isEmpty. Operand 6112 states and 7803 transitions. [2023-12-16 08:10:48,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 08:10:48,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:48,067 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] [2023-12-16 08:10:48,078 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 (11)] Ended with exit code 0 [2023-12-16 08:10:48,270 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 [2023-12-16 08:10:48,271 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:48,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:48,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1832774066, now seen corresponding path program 2 times [2023-12-16 08:10:48,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:48,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291168181] [2023-12-16 08:10:48,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 08:10:48,272 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 [2023-12-16 08:10:48,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:48,273 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) [2023-12-16 08:10:48,275 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 [2023-12-16 08:10:48,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 08:10:48,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 08:10:48,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:10:48,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:48,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:48,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:48,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291168181] [2023-12-16 08:10:48,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291168181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:48,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:48,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:10:48,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088558901] [2023-12-16 08:10:48,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:48,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:10:48,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:10:48,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:10:48,380 INFO L87 Difference]: Start difference. First operand 6112 states and 7803 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:10:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:48,611 INFO L93 Difference]: Finished difference Result 9083 states and 11659 transitions. [2023-12-16 08:10:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:10:48,612 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 [2023-12-16 08:10:48,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:48,636 INFO L225 Difference]: With dead ends: 9083 [2023-12-16 08:10:48,636 INFO L226 Difference]: Without dead ends: 3780 [2023-12-16 08:10:48,645 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 [2023-12-16 08:10:48,646 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 513 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:48,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 667 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:10:48,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2023-12-16 08:10:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 3756. [2023-12-16 08:10:48,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 2860 states have (on average 1.2895104895104894) internal successors, (3688), 2951 states have internal predecessors, (3688), 432 states have call successors, (432), 344 states have call predecessors, (432), 462 states have return successors, (627), 465 states have call predecessors, (627), 429 states have call successors, (627) [2023-12-16 08:10:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 4747 transitions. [2023-12-16 08:10:48,918 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 4747 transitions. Word has length 71 [2023-12-16 08:10:48,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:48,919 INFO L495 AbstractCegarLoop]: Abstraction has 3756 states and 4747 transitions. [2023-12-16 08:10:48,919 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) [2023-12-16 08:10:48,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 4747 transitions. [2023-12-16 08:10:48,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 08:10:48,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:48,921 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] [2023-12-16 08:10:48,924 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 [2023-12-16 08:10:49,124 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 [2023-12-16 08:10:49,125 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:49,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:49,125 INFO L85 PathProgramCache]: Analyzing trace with hash -760462493, now seen corresponding path program 1 times [2023-12-16 08:10:49,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:49,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121311181] [2023-12-16 08:10:49,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:49,127 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 [2023-12-16 08:10:49,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:49,141 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) [2023-12-16 08:10:49,173 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 [2023-12-16 08:10:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:49,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:10:49,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:49,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:49,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:49,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121311181] [2023-12-16 08:10:49,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121311181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:49,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:49,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:10:49,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734075354] [2023-12-16 08:10:49,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:49,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:10:49,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:49,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:10:49,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:10:49,239 INFO L87 Difference]: Start difference. First operand 3756 states and 4747 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 08:10:49,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:49,780 INFO L93 Difference]: Finished difference Result 10193 states and 12706 transitions. [2023-12-16 08:10:49,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:10:49,781 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 [2023-12-16 08:10:49,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:49,804 INFO L225 Difference]: With dead ends: 10193 [2023-12-16 08:10:49,804 INFO L226 Difference]: Without dead ends: 5404 [2023-12-16 08:10:49,815 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 [2023-12-16 08:10:49,816 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 84 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:49,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1068 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:10:49,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2023-12-16 08:10:50,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 5404. [2023-12-16 08:10:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5404 states, 4070 states have (on average 1.267076167076167) internal successors, (5157), 4206 states have internal predecessors, (5157), 630 states have call successors, (630), 512 states have call predecessors, (630), 702 states have return successors, (951), 690 states have call predecessors, (951), 627 states have call successors, (951) [2023-12-16 08:10:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 6738 transitions. [2023-12-16 08:10:50,273 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 6738 transitions. Word has length 76 [2023-12-16 08:10:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:50,274 INFO L495 AbstractCegarLoop]: Abstraction has 5404 states and 6738 transitions. [2023-12-16 08:10:50,274 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) [2023-12-16 08:10:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 6738 transitions. [2023-12-16 08:10:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-16 08:10:50,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:50,277 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] [2023-12-16 08:10:50,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-16 08:10:50,481 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 [2023-12-16 08:10:50,481 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:50,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:50,482 INFO L85 PathProgramCache]: Analyzing trace with hash 785490184, now seen corresponding path program 1 times [2023-12-16 08:10:50,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:50,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757968920] [2023-12-16 08:10:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:50,482 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 [2023-12-16 08:10:50,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:50,483 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) [2023-12-16 08:10:50,485 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 [2023-12-16 08:10:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:50,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:10:50,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 08:10:50,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:50,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:50,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757968920] [2023-12-16 08:10:50,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757968920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:50,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:50,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:10:50,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302194177] [2023-12-16 08:10:50,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:50,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:10:50,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:50,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:10:50,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:10:50,635 INFO L87 Difference]: Start difference. First operand 5404 states and 6738 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 08:10:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:51,416 INFO L93 Difference]: Finished difference Result 10551 states and 13070 transitions. [2023-12-16 08:10:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:10:51,417 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 [2023-12-16 08:10:51,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:51,438 INFO L225 Difference]: With dead ends: 10551 [2023-12-16 08:10:51,438 INFO L226 Difference]: Without dead ends: 5434 [2023-12-16 08:10:51,447 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 [2023-12-16 08:10:51,447 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 714 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:51,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 532 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 08:10:51,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5434 states. [2023-12-16 08:10:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5434 to 5434. [2023-12-16 08:10:51,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5434 states, 4085 states have (on average 1.2499388004895962) internal successors, (5106), 4236 states have internal predecessors, (5106), 630 states have call successors, (630), 512 states have call predecessors, (630), 717 states have return successors, (951), 690 states have call predecessors, (951), 627 states have call successors, (951) [2023-12-16 08:10:51,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 6687 transitions. [2023-12-16 08:10:51,801 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 6687 transitions. Word has length 85 [2023-12-16 08:10:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:51,802 INFO L495 AbstractCegarLoop]: Abstraction has 5434 states and 6687 transitions. [2023-12-16 08:10:51,802 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) [2023-12-16 08:10:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 6687 transitions. [2023-12-16 08:10:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 08:10:51,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:51,804 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] [2023-12-16 08:10:51,828 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 (14)] Ended with exit code 0 [2023-12-16 08:10:52,007 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 [2023-12-16 08:10:52,008 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:52,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:52,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1653971837, now seen corresponding path program 1 times [2023-12-16 08:10:52,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:52,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982428579] [2023-12-16 08:10:52,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:52,009 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 [2023-12-16 08:10:52,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:52,010 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) [2023-12-16 08:10:52,012 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 [2023-12-16 08:10:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:52,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:10:52,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 08:10:52,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:52,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:52,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982428579] [2023-12-16 08:10:52,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982428579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:52,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:52,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:10:52,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563738446] [2023-12-16 08:10:52,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:52,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:10:52,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:52,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:10:52,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:10:52,161 INFO L87 Difference]: Start difference. First operand 5434 states and 6687 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 08:10:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:52,567 INFO L93 Difference]: Finished difference Result 10340 states and 12625 transitions. [2023-12-16 08:10:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:10:52,568 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 [2023-12-16 08:10:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:52,581 INFO L225 Difference]: With dead ends: 10340 [2023-12-16 08:10:52,581 INFO L226 Difference]: Without dead ends: 5183 [2023-12-16 08:10:52,588 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 [2023-12-16 08:10:52,588 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 91 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:52,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1059 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:10:52,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5183 states. [2023-12-16 08:10:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5183 to 5180. [2023-12-16 08:10:52,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5180 states, 3901 states have (on average 1.2376313765701101) internal successors, (4828), 4046 states have internal predecessors, (4828), 592 states have call successors, (592), 484 states have call predecessors, (592), 685 states have return successors, (834), 652 states have call predecessors, (834), 589 states have call successors, (834) [2023-12-16 08:10:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5180 states to 5180 states and 6254 transitions. [2023-12-16 08:10:52,858 INFO L78 Accepts]: Start accepts. Automaton has 5180 states and 6254 transitions. Word has length 86 [2023-12-16 08:10:52,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:52,858 INFO L495 AbstractCegarLoop]: Abstraction has 5180 states and 6254 transitions. [2023-12-16 08:10:52,858 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) [2023-12-16 08:10:52,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5180 states and 6254 transitions. [2023-12-16 08:10:52,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:10:52,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:52,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:10:52,880 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 [2023-12-16 08:10:53,067 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 [2023-12-16 08:10:53,067 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:53,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:53,068 INFO L85 PathProgramCache]: Analyzing trace with hash 550923923, now seen corresponding path program 1 times [2023-12-16 08:10:53,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:53,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069198271] [2023-12-16 08:10:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:53,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:53,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:53,085 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) [2023-12-16 08:10:53,087 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 [2023-12-16 08:10:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:53,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:10:53,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:53,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:53,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:53,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069198271] [2023-12-16 08:10:53,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069198271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:53,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:53,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:10:53,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393225432] [2023-12-16 08:10:53,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:53,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:10:53,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:53,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:10:53,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:10:53,226 INFO L87 Difference]: Start difference. First operand 5180 states and 6254 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:10:53,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:53,555 INFO L93 Difference]: Finished difference Result 5432 states and 6658 transitions. [2023-12-16 08:10:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:10:53,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:10:53,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:53,564 INFO L225 Difference]: With dead ends: 5432 [2023-12-16 08:10:53,564 INFO L226 Difference]: Without dead ends: 5180 [2023-12-16 08:10:53,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:10:53,567 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 409 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:53,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 609 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:10:53,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5180 states. [2023-12-16 08:10:53,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5180 to 5180. [2023-12-16 08:10:53,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5180 states, 3901 states have (on average 1.2373750320430659) internal successors, (4827), 4046 states have internal predecessors, (4827), 592 states have call successors, (592), 484 states have call predecessors, (592), 685 states have return successors, (834), 652 states have call predecessors, (834), 589 states have call successors, (834) [2023-12-16 08:10:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5180 states to 5180 states and 6253 transitions. [2023-12-16 08:10:53,807 INFO L78 Accepts]: Start accepts. Automaton has 5180 states and 6253 transitions. Word has length 122 [2023-12-16 08:10:53,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:53,807 INFO L495 AbstractCegarLoop]: Abstraction has 5180 states and 6253 transitions. [2023-12-16 08:10:53,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:10:53,808 INFO L276 IsEmpty]: Start isEmpty. Operand 5180 states and 6253 transitions. [2023-12-16 08:10:53,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:10:53,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:53,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:10:53,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-16 08:10:54,015 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 [2023-12-16 08:10:54,015 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:54,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:54,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2096680431, now seen corresponding path program 1 times [2023-12-16 08:10:54,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:54,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617563665] [2023-12-16 08:10:54,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:54,016 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 [2023-12-16 08:10:54,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:54,018 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) [2023-12-16 08:10:54,048 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 [2023-12-16 08:10:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:54,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:10:54,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:54,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:54,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:54,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617563665] [2023-12-16 08:10:54,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617563665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:54,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:54,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:10:54,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823348738] [2023-12-16 08:10:54,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:54,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:10:54,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:54,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:10:54,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:10:54,181 INFO L87 Difference]: Start difference. First operand 5180 states and 6253 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:10:54,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:54,981 INFO L93 Difference]: Finished difference Result 5707 states and 7110 transitions. [2023-12-16 08:10:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:10:54,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:10:54,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:54,992 INFO L225 Difference]: With dead ends: 5707 [2023-12-16 08:10:54,992 INFO L226 Difference]: Without dead ends: 5460 [2023-12-16 08:10:54,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:10:54,994 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 935 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:54,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1219 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 08:10:54,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2023-12-16 08:10:55,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 5437. [2023-12-16 08:10:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.2600387034349299) internal successors, (5209), 4280 states have internal predecessors, (5209), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-16 08:10:55,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6670 transitions. [2023-12-16 08:10:55,389 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6670 transitions. Word has length 122 [2023-12-16 08:10:55,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:55,389 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6670 transitions. [2023-12-16 08:10:55,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:10:55,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6670 transitions. [2023-12-16 08:10:55,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:10:55,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:55,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:10:55,406 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 [2023-12-16 08:10:55,598 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 [2023-12-16 08:10:55,598 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:55,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:55,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1922361553, now seen corresponding path program 1 times [2023-12-16 08:10:55,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:55,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857980537] [2023-12-16 08:10:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:55,599 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 [2023-12-16 08:10:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:55,600 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) [2023-12-16 08:10:55,632 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 [2023-12-16 08:10:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:55,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:10:55,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:55,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:55,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:55,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857980537] [2023-12-16 08:10:55,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857980537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:55,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:55,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:10:55,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294809095] [2023-12-16 08:10:55,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:55,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:10:55,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:55,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:10:55,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:10:55,761 INFO L87 Difference]: Start difference. First operand 5437 states and 6670 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:10:56,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:56,474 INFO L93 Difference]: Finished difference Result 5941 states and 7489 transitions. [2023-12-16 08:10:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:10:56,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:10:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:56,502 INFO L225 Difference]: With dead ends: 5941 [2023-12-16 08:10:56,502 INFO L226 Difference]: Without dead ends: 5437 [2023-12-16 08:10:56,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:10:56,506 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 707 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:56,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 816 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:10:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2023-12-16 08:10:56,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2023-12-16 08:10:56,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.258345428156749) internal successors, (5202), 4280 states have internal predecessors, (5202), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-16 08:10:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6663 transitions. [2023-12-16 08:10:56,870 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6663 transitions. Word has length 122 [2023-12-16 08:10:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:56,870 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6663 transitions. [2023-12-16 08:10:56,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:10:56,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6663 transitions. [2023-12-16 08:10:56,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:10:56,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:56,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:10:56,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-16 08:10:57,078 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 [2023-12-16 08:10:57,078 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:57,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:57,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1827317231, now seen corresponding path program 1 times [2023-12-16 08:10:57,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:57,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532715781] [2023-12-16 08:10:57,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:57,080 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 [2023-12-16 08:10:57,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:57,081 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) [2023-12-16 08:10:57,087 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 [2023-12-16 08:10:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:57,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:10:57,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:57,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:57,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:57,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532715781] [2023-12-16 08:10:57,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532715781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:57,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:57,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:10:57,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985325007] [2023-12-16 08:10:57,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:57,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:10:57,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:57,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:10:57,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:10:57,235 INFO L87 Difference]: Start difference. First operand 5437 states and 6663 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:10:57,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:57,937 INFO L93 Difference]: Finished difference Result 5941 states and 7475 transitions. [2023-12-16 08:10:57,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:10:57,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:10:57,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:57,948 INFO L225 Difference]: With dead ends: 5941 [2023-12-16 08:10:57,949 INFO L226 Difference]: Without dead ends: 5437 [2023-12-16 08:10:57,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:10:57,951 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 701 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:57,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 809 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:10:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2023-12-16 08:10:58,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2023-12-16 08:10:58,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.256652152878568) internal successors, (5195), 4280 states have internal predecessors, (5195), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-16 08:10:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6656 transitions. [2023-12-16 08:10:58,277 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6656 transitions. Word has length 122 [2023-12-16 08:10:58,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:58,278 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6656 transitions. [2023-12-16 08:10:58,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:10:58,278 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6656 transitions. [2023-12-16 08:10:58,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:10:58,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:58,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:10:58,302 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 (19)] Ended with exit code 0 [2023-12-16 08:10:58,485 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 [2023-12-16 08:10:58,485 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:58,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1809727279, now seen corresponding path program 1 times [2023-12-16 08:10:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:58,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079220862] [2023-12-16 08:10:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:58,486 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 [2023-12-16 08:10:58,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:58,487 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) [2023-12-16 08:10:58,515 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 [2023-12-16 08:10:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:58,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:10:58,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:10:58,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:58,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:58,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079220862] [2023-12-16 08:10:58,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079220862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:58,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:58,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:10:58,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371687526] [2023-12-16 08:10:58,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:58,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:10:58,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:58,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:10:58,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:10:58,640 INFO L87 Difference]: Start difference. First operand 5437 states and 6656 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:10:59,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:59,333 INFO L93 Difference]: Finished difference Result 5941 states and 7461 transitions. [2023-12-16 08:10:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:10:59,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:10:59,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:59,371 INFO L225 Difference]: With dead ends: 5941 [2023-12-16 08:10:59,371 INFO L226 Difference]: Without dead ends: 5437 [2023-12-16 08:10:59,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:10:59,374 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 694 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:59,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 802 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:10:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2023-12-16 08:10:59,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2023-12-16 08:10:59,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.254958877600387) internal successors, (5188), 4280 states have internal predecessors, (5188), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-16 08:10:59,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6649 transitions. [2023-12-16 08:10:59,759 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6649 transitions. Word has length 122 [2023-12-16 08:10:59,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:59,759 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6649 transitions. [2023-12-16 08:10:59,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:10:59,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6649 transitions. [2023-12-16 08:10:59,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:10:59,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:59,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:10:59,782 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 (20)] Forceful destruction successful, exit code 0 [2023-12-16 08:10:59,966 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 [2023-12-16 08:10:59,967 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:59,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:59,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1452857233, now seen corresponding path program 1 times [2023-12-16 08:10:59,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:59,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505965273] [2023-12-16 08:10:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:59,968 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 [2023-12-16 08:10:59,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:59,980 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) [2023-12-16 08:10:59,982 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 [2023-12-16 08:11:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:00,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:00,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:00,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:00,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:00,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:00,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505965273] [2023-12-16 08:11:00,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505965273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:00,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:00,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:00,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404815346] [2023-12-16 08:11:00,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:00,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:11:00,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:00,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:11:00,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:11:00,155 INFO L87 Difference]: Start difference. First operand 5437 states and 6649 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:00,934 INFO L93 Difference]: Finished difference Result 5941 states and 7447 transitions. [2023-12-16 08:11:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:11:00,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:00,946 INFO L225 Difference]: With dead ends: 5941 [2023-12-16 08:11:00,946 INFO L226 Difference]: Without dead ends: 5437 [2023-12-16 08:11:00,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:11:00,949 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 688 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:00,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 795 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:11:00,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2023-12-16 08:11:01,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2023-12-16 08:11:01,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.2532656023222062) internal successors, (5181), 4280 states have internal predecessors, (5181), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-16 08:11:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6642 transitions. [2023-12-16 08:11:01,389 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6642 transitions. Word has length 122 [2023-12-16 08:11:01,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:01,389 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6642 transitions. [2023-12-16 08:11:01,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6642 transitions. [2023-12-16 08:11:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:01,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:01,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:01,398 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 (21)] Ended with exit code 0 [2023-12-16 08:11:01,598 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 [2023-12-16 08:11:01,598 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:01,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:01,598 INFO L85 PathProgramCache]: Analyzing trace with hash -243013423, now seen corresponding path program 1 times [2023-12-16 08:11:01,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:01,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629866614] [2023-12-16 08:11:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:01,599 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 [2023-12-16 08:11:01,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:01,600 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) [2023-12-16 08:11:01,625 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 [2023-12-16 08:11:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:01,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:01,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:01,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:01,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:01,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629866614] [2023-12-16 08:11:01,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629866614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:01,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:01,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:01,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6994276] [2023-12-16 08:11:01,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:01,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:11:01,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:01,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:11:01,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:11:01,753 INFO L87 Difference]: Start difference. First operand 5437 states and 6642 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:02,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:02,522 INFO L93 Difference]: Finished difference Result 5941 states and 7433 transitions. [2023-12-16 08:11:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:11:02,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:02,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:02,533 INFO L225 Difference]: With dead ends: 5941 [2023-12-16 08:11:02,534 INFO L226 Difference]: Without dead ends: 5437 [2023-12-16 08:11:02,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:11:02,536 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 682 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:02,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 788 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:11:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2023-12-16 08:11:02,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2023-12-16 08:11:02,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.251572327044025) internal successors, (5174), 4280 states have internal predecessors, (5174), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-16 08:11:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6635 transitions. [2023-12-16 08:11:02,983 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6635 transitions. Word has length 122 [2023-12-16 08:11:02,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:02,983 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6635 transitions. [2023-12-16 08:11:02,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:02,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6635 transitions. [2023-12-16 08:11:02,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:02,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:02,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:02,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-16 08:11:03,190 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 [2023-12-16 08:11:03,191 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:03,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:03,191 INFO L85 PathProgramCache]: Analyzing trace with hash 810659729, now seen corresponding path program 1 times [2023-12-16 08:11:03,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:03,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207835208] [2023-12-16 08:11:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:03,192 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 [2023-12-16 08:11:03,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:03,193 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) [2023-12-16 08:11:03,216 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 [2023-12-16 08:11:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:03,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:03,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:03,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:03,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:03,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207835208] [2023-12-16 08:11:03,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207835208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:03,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:03,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:03,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109332676] [2023-12-16 08:11:03,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:03,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:11:03,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:03,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:11:03,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:11:03,343 INFO L87 Difference]: Start difference. First operand 5437 states and 6635 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:04,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:04,216 INFO L93 Difference]: Finished difference Result 5941 states and 7419 transitions. [2023-12-16 08:11:04,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:11:04,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:04,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:04,229 INFO L225 Difference]: With dead ends: 5941 [2023-12-16 08:11:04,229 INFO L226 Difference]: Without dead ends: 5437 [2023-12-16 08:11:04,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:11:04,231 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 676 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:04,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 781 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:11:04,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2023-12-16 08:11:04,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2023-12-16 08:11:04,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.2498790517658442) internal successors, (5167), 4280 states have internal predecessors, (5167), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-16 08:11:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6628 transitions. [2023-12-16 08:11:04,705 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6628 transitions. Word has length 122 [2023-12-16 08:11:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:04,705 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6628 transitions. [2023-12-16 08:11:04,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6628 transitions. [2023-12-16 08:11:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:04,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:04,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:04,726 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 [2023-12-16 08:11:04,912 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 [2023-12-16 08:11:04,912 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:04,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:04,913 INFO L85 PathProgramCache]: Analyzing trace with hash 290459857, now seen corresponding path program 1 times [2023-12-16 08:11:04,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:04,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412166911] [2023-12-16 08:11:04,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:04,913 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 [2023-12-16 08:11:04,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:04,915 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) [2023-12-16 08:11:04,919 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 [2023-12-16 08:11:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:05,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:05,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:05,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:05,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:05,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412166911] [2023-12-16 08:11:05,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412166911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:05,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:05,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:05,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434315050] [2023-12-16 08:11:05,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:05,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:11:05,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:05,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:11:05,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:11:05,058 INFO L87 Difference]: Start difference. First operand 5437 states and 6628 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:05,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:05,883 INFO L93 Difference]: Finished difference Result 5941 states and 7405 transitions. [2023-12-16 08:11:05,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:11:05,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:05,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:05,891 INFO L225 Difference]: With dead ends: 5941 [2023-12-16 08:11:05,891 INFO L226 Difference]: Without dead ends: 5437 [2023-12-16 08:11:05,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:11:05,893 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 670 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:05,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 774 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:11:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2023-12-16 08:11:06,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2023-12-16 08:11:06,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 4134 states have (on average 1.2481857764876634) internal successors, (5160), 4280 states have internal predecessors, (5160), 609 states have call successors, (609), 490 states have call predecessors, (609), 692 states have return successors, (852), 669 states have call predecessors, (852), 606 states have call successors, (852) [2023-12-16 08:11:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6621 transitions. [2023-12-16 08:11:06,407 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6621 transitions. Word has length 122 [2023-12-16 08:11:06,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:06,407 INFO L495 AbstractCegarLoop]: Abstraction has 5437 states and 6621 transitions. [2023-12-16 08:11:06,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:06,408 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6621 transitions. [2023-12-16 08:11:06,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:06,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:06,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:06,415 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 [2023-12-16 08:11:06,614 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 [2023-12-16 08:11:06,615 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:06,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:06,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1382057873, now seen corresponding path program 1 times [2023-12-16 08:11:06,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:06,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721416501] [2023-12-16 08:11:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:06,616 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 [2023-12-16 08:11:06,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:06,617 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) [2023-12-16 08:11:06,645 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 [2023-12-16 08:11:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:06,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:06,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:06,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:06,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:06,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721416501] [2023-12-16 08:11:06,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721416501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:06,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:06,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:06,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47007537] [2023-12-16 08:11:06,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:06,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:11:06,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:06,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:11:06,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:11:06,768 INFO L87 Difference]: Start difference. First operand 5437 states and 6621 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:07,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:07,637 INFO L93 Difference]: Finished difference Result 6059 states and 7583 transitions. [2023-12-16 08:11:07,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:11:07,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:07,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:07,649 INFO L225 Difference]: With dead ends: 6059 [2023-12-16 08:11:07,649 INFO L226 Difference]: Without dead ends: 5555 [2023-12-16 08:11:07,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:11:07,653 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 742 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:07,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 768 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:11:07,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5555 states. [2023-12-16 08:11:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5555 to 5555. [2023-12-16 08:11:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5555 states, 4246 states have (on average 1.2522373999057936) internal successors, (5317), 4392 states have internal predecessors, (5317), 611 states have call successors, (611), 494 states have call predecessors, (611), 696 states have return successors, (854), 671 states have call predecessors, (854), 608 states have call successors, (854) [2023-12-16 08:11:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5555 states to 5555 states and 6782 transitions. [2023-12-16 08:11:08,247 INFO L78 Accepts]: Start accepts. Automaton has 5555 states and 6782 transitions. Word has length 122 [2023-12-16 08:11:08,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:08,247 INFO L495 AbstractCegarLoop]: Abstraction has 5555 states and 6782 transitions. [2023-12-16 08:11:08,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 5555 states and 6782 transitions. [2023-12-16 08:11:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:08,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:08,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:08,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-16 08:11:08,454 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 [2023-12-16 08:11:08,455 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:08,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:08,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2046412591, now seen corresponding path program 1 times [2023-12-16 08:11:08,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:08,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740724821] [2023-12-16 08:11:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:08,456 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 [2023-12-16 08:11:08,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:08,457 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) [2023-12-16 08:11:08,485 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 [2023-12-16 08:11:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:08,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:08,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:08,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:08,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:08,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740724821] [2023-12-16 08:11:08,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740724821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:08,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:08,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:08,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889632281] [2023-12-16 08:11:08,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:08,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:11:08,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:08,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:11:08,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:11:08,602 INFO L87 Difference]: Start difference. First operand 5555 states and 6782 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:09,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:09,634 INFO L93 Difference]: Finished difference Result 6295 states and 7905 transitions. [2023-12-16 08:11:09,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:11:09,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:09,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:09,644 INFO L225 Difference]: With dead ends: 6295 [2023-12-16 08:11:09,644 INFO L226 Difference]: Without dead ends: 5673 [2023-12-16 08:11:09,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:11:09,666 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 735 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:09,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 761 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:11:09,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5673 states. [2023-12-16 08:11:10,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5673 to 5673. [2023-12-16 08:11:10,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5673 states, 4358 states have (on average 1.255162918770078) internal successors, (5470), 4504 states have internal predecessors, (5470), 613 states have call successors, (613), 498 states have call predecessors, (613), 700 states have return successors, (856), 673 states have call predecessors, (856), 610 states have call successors, (856) [2023-12-16 08:11:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 6939 transitions. [2023-12-16 08:11:10,215 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 6939 transitions. Word has length 122 [2023-12-16 08:11:10,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:10,215 INFO L495 AbstractCegarLoop]: Abstraction has 5673 states and 6939 transitions. [2023-12-16 08:11:10,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:10,215 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 6939 transitions. [2023-12-16 08:11:10,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:10,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:10,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:10,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-12-16 08:11:10,421 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 [2023-12-16 08:11:10,422 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:10,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:10,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1910140432, now seen corresponding path program 1 times [2023-12-16 08:11:10,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:10,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405777324] [2023-12-16 08:11:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:10,423 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 [2023-12-16 08:11:10,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:10,424 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) [2023-12-16 08:11:10,432 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 [2023-12-16 08:11:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:10,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:10,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:10,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:10,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:10,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405777324] [2023-12-16 08:11:10,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405777324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:10,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:10,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:10,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190033656] [2023-12-16 08:11:10,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:10,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:11:10,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:10,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:11:10,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:11:10,585 INFO L87 Difference]: Start difference. First operand 5673 states and 6939 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:11,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:11,573 INFO L93 Difference]: Finished difference Result 6531 states and 8219 transitions. [2023-12-16 08:11:11,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:11:11,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:11,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:11,584 INFO L225 Difference]: With dead ends: 6531 [2023-12-16 08:11:11,584 INFO L226 Difference]: Without dead ends: 5791 [2023-12-16 08:11:11,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:11:11,587 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 728 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:11,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 754 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:11:11,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5791 states. [2023-12-16 08:11:12,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5791 to 5791. [2023-12-16 08:11:12,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5791 states, 4470 states have (on average 1.2570469798657717) internal successors, (5619), 4616 states have internal predecessors, (5619), 615 states have call successors, (615), 502 states have call predecessors, (615), 704 states have return successors, (858), 675 states have call predecessors, (858), 612 states have call successors, (858) [2023-12-16 08:11:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5791 states to 5791 states and 7092 transitions. [2023-12-16 08:11:12,189 INFO L78 Accepts]: Start accepts. Automaton has 5791 states and 7092 transitions. Word has length 122 [2023-12-16 08:11:12,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:12,189 INFO L495 AbstractCegarLoop]: Abstraction has 5791 states and 7092 transitions. [2023-12-16 08:11:12,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 5791 states and 7092 transitions. [2023-12-16 08:11:12,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:12,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:12,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:12,196 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 [2023-12-16 08:11:12,396 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 [2023-12-16 08:11:12,397 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:12,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:12,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1089849905, now seen corresponding path program 1 times [2023-12-16 08:11:12,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:12,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2430131] [2023-12-16 08:11:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:12,398 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 [2023-12-16 08:11:12,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:12,399 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) [2023-12-16 08:11:12,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-16 08:11:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:12,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:12,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:12,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:12,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:12,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2430131] [2023-12-16 08:11:12,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2430131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:12,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:12,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:12,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751117213] [2023-12-16 08:11:12,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:12,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:11:12,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:12,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:11:12,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:11:12,609 INFO L87 Difference]: Start difference. First operand 5791 states and 7092 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:13,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:13,661 INFO L93 Difference]: Finished difference Result 6767 states and 8525 transitions. [2023-12-16 08:11:13,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:11:13,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:13,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:13,670 INFO L225 Difference]: With dead ends: 6767 [2023-12-16 08:11:13,670 INFO L226 Difference]: Without dead ends: 5909 [2023-12-16 08:11:13,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:11:13,673 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 721 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:13,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 747 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:11:13,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5909 states. [2023-12-16 08:11:14,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5909 to 5909. [2023-12-16 08:11:14,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5909 states, 4582 states have (on average 1.2579659537319947) internal successors, (5764), 4728 states have internal predecessors, (5764), 617 states have call successors, (617), 506 states have call predecessors, (617), 708 states have return successors, (860), 677 states have call predecessors, (860), 614 states have call successors, (860) [2023-12-16 08:11:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5909 states to 5909 states and 7241 transitions. [2023-12-16 08:11:14,298 INFO L78 Accepts]: Start accepts. Automaton has 5909 states and 7241 transitions. Word has length 122 [2023-12-16 08:11:14,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:14,298 INFO L495 AbstractCegarLoop]: Abstraction has 5909 states and 7241 transitions. [2023-12-16 08:11:14,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 5909 states and 7241 transitions. [2023-12-16 08:11:14,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:14,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:14,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:14,304 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 (28)] Ended with exit code 0 [2023-12-16 08:11:14,504 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 [2023-12-16 08:11:14,504 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:14,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:14,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1948107408, now seen corresponding path program 1 times [2023-12-16 08:11:14,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:14,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597740601] [2023-12-16 08:11:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:14,505 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 [2023-12-16 08:11:14,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:14,506 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) [2023-12-16 08:11:14,507 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 [2023-12-16 08:11:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:14,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:14,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:14,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:14,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:14,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597740601] [2023-12-16 08:11:14,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597740601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:14,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:14,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:14,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535073815] [2023-12-16 08:11:14,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:14,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:11:14,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:14,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:11:14,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:11:14,660 INFO L87 Difference]: Start difference. First operand 5909 states and 7241 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:15,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:15,728 INFO L93 Difference]: Finished difference Result 7003 states and 8823 transitions. [2023-12-16 08:11:15,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:11:15,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:15,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:15,740 INFO L225 Difference]: With dead ends: 7003 [2023-12-16 08:11:15,740 INFO L226 Difference]: Without dead ends: 6027 [2023-12-16 08:11:15,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:11:15,744 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 714 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:15,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 740 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:11:15,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6027 states. [2023-12-16 08:11:16,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6027 to 6027. [2023-12-16 08:11:16,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6027 states, 4694 states have (on average 1.257988922028121) internal successors, (5905), 4840 states have internal predecessors, (5905), 619 states have call successors, (619), 510 states have call predecessors, (619), 712 states have return successors, (862), 679 states have call predecessors, (862), 616 states have call successors, (862) [2023-12-16 08:11:16,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6027 states to 6027 states and 7386 transitions. [2023-12-16 08:11:16,439 INFO L78 Accepts]: Start accepts. Automaton has 6027 states and 7386 transitions. Word has length 122 [2023-12-16 08:11:16,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:16,439 INFO L495 AbstractCegarLoop]: Abstraction has 6027 states and 7386 transitions. [2023-12-16 08:11:16,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:16,440 INFO L276 IsEmpty]: Start isEmpty. Operand 6027 states and 7386 transitions. [2023-12-16 08:11:16,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:16,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:16,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:16,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-16 08:11:16,646 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 [2023-12-16 08:11:16,646 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:16,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:16,646 INFO L85 PathProgramCache]: Analyzing trace with hash 226380112, now seen corresponding path program 1 times [2023-12-16 08:11:16,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:16,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185537795] [2023-12-16 08:11:16,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:16,647 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 [2023-12-16 08:11:16,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:16,648 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) [2023-12-16 08:11:16,650 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 [2023-12-16 08:11:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:16,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:16,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:16,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:16,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:16,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:16,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185537795] [2023-12-16 08:11:16,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185537795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:16,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:16,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:16,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78013427] [2023-12-16 08:11:16,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:16,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:11:16,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:16,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:11:16,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:11:16,801 INFO L87 Difference]: Start difference. First operand 6027 states and 7386 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:17,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:17,947 INFO L93 Difference]: Finished difference Result 7239 states and 9113 transitions. [2023-12-16 08:11:17,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:11:17,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:17,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:17,961 INFO L225 Difference]: With dead ends: 7239 [2023-12-16 08:11:17,961 INFO L226 Difference]: Without dead ends: 6145 [2023-12-16 08:11:17,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:11:17,966 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 707 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:17,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 733 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:11:17,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2023-12-16 08:11:18,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 6145. [2023-12-16 08:11:18,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 4806 states have (on average 1.2571785268414482) internal successors, (6042), 4952 states have internal predecessors, (6042), 621 states have call successors, (621), 514 states have call predecessors, (621), 716 states have return successors, (864), 681 states have call predecessors, (864), 618 states have call successors, (864) [2023-12-16 08:11:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 7527 transitions. [2023-12-16 08:11:18,796 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 7527 transitions. Word has length 122 [2023-12-16 08:11:18,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:18,796 INFO L495 AbstractCegarLoop]: Abstraction has 6145 states and 7527 transitions. [2023-12-16 08:11:18,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:18,796 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 7527 transitions. [2023-12-16 08:11:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:18,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:18,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:18,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-16 08:11:19,004 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 [2023-12-16 08:11:19,004 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:19,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:19,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2042600623, now seen corresponding path program 1 times [2023-12-16 08:11:19,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:19,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645283987] [2023-12-16 08:11:19,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:19,005 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 [2023-12-16 08:11:19,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:19,007 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) [2023-12-16 08:11:19,023 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 [2023-12-16 08:11:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:19,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:19,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:19,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:19,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:19,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645283987] [2023-12-16 08:11:19,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645283987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:19,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:19,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:19,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445208045] [2023-12-16 08:11:19,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:19,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:11:19,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:19,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:11:19,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:11:19,151 INFO L87 Difference]: Start difference. First operand 6145 states and 7527 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:20,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:20,472 INFO L93 Difference]: Finished difference Result 7475 states and 9395 transitions. [2023-12-16 08:11:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:11:20,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:20,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:20,484 INFO L225 Difference]: With dead ends: 7475 [2023-12-16 08:11:20,485 INFO L226 Difference]: Without dead ends: 6263 [2023-12-16 08:11:20,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:11:20,488 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 700 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:20,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 726 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 08:11:20,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2023-12-16 08:11:21,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 6263. [2023-12-16 08:11:21,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6263 states, 4918 states have (on average 1.2555917039446929) internal successors, (6175), 5064 states have internal predecessors, (6175), 623 states have call successors, (623), 518 states have call predecessors, (623), 720 states have return successors, (866), 683 states have call predecessors, (866), 620 states have call successors, (866) [2023-12-16 08:11:21,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6263 states to 6263 states and 7664 transitions. [2023-12-16 08:11:21,223 INFO L78 Accepts]: Start accepts. Automaton has 6263 states and 7664 transitions. Word has length 122 [2023-12-16 08:11:21,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:21,223 INFO L495 AbstractCegarLoop]: Abstraction has 6263 states and 7664 transitions. [2023-12-16 08:11:21,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:21,223 INFO L276 IsEmpty]: Start isEmpty. Operand 6263 states and 7664 transitions. [2023-12-16 08:11:21,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:21,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:21,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:21,231 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 [2023-12-16 08:11:21,429 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 [2023-12-16 08:11:21,430 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:21,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:21,430 INFO L85 PathProgramCache]: Analyzing trace with hash 663984657, now seen corresponding path program 1 times [2023-12-16 08:11:21,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:21,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134342377] [2023-12-16 08:11:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:21,431 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 [2023-12-16 08:11:21,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:21,432 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) [2023-12-16 08:11:21,460 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 [2023-12-16 08:11:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:21,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:21,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:21,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:21,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:21,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134342377] [2023-12-16 08:11:21,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134342377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:21,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:21,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:21,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536260696] [2023-12-16 08:11:21,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:21,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:11:21,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:21,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:11:21,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:11:21,589 INFO L87 Difference]: Start difference. First operand 6263 states and 7664 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:22,785 INFO L93 Difference]: Finished difference Result 7711 states and 9669 transitions. [2023-12-16 08:11:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:11:22,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:22,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:22,797 INFO L225 Difference]: With dead ends: 7711 [2023-12-16 08:11:22,797 INFO L226 Difference]: Without dead ends: 6381 [2023-12-16 08:11:22,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:11:22,802 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 693 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:22,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 719 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:11:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2023-12-16 08:11:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 6381. [2023-12-16 08:11:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 5030 states have (on average 1.2532803180914514) internal successors, (6304), 5176 states have internal predecessors, (6304), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-16 08:11:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 7797 transitions. [2023-12-16 08:11:23,572 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 7797 transitions. Word has length 122 [2023-12-16 08:11:23,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:23,572 INFO L495 AbstractCegarLoop]: Abstraction has 6381 states and 7797 transitions. [2023-12-16 08:11:23,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:23,573 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 7797 transitions. [2023-12-16 08:11:23,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:23,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:23,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:23,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-16 08:11:23,780 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 [2023-12-16 08:11:23,780 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:23,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash -121122478, now seen corresponding path program 1 times [2023-12-16 08:11:23,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:23,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105397258] [2023-12-16 08:11:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:23,781 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 [2023-12-16 08:11:23,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:23,782 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) [2023-12-16 08:11:23,784 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 [2023-12-16 08:11:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:23,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:23,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:23,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:23,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:23,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105397258] [2023-12-16 08:11:23,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105397258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:23,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:23,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:23,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455780123] [2023-12-16 08:11:23,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:23,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:11:23,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:23,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:11:23,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:23,893 INFO L87 Difference]: Start difference. First operand 6381 states and 7797 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:24,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:24,711 INFO L93 Difference]: Finished difference Result 7932 states and 9914 transitions. [2023-12-16 08:11:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:11:24,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:24,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:24,725 INFO L225 Difference]: With dead ends: 7932 [2023-12-16 08:11:24,725 INFO L226 Difference]: Without dead ends: 6485 [2023-12-16 08:11:24,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:24,730 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 74 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:24,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1347 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:11:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6485 states. [2023-12-16 08:11:25,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6485 to 6385. [2023-12-16 08:11:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6385 states, 5034 states have (on average 1.2499006754072308) internal successors, (6292), 5180 states have internal predecessors, (6292), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-16 08:11:25,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6385 states to 6385 states and 7785 transitions. [2023-12-16 08:11:25,564 INFO L78 Accepts]: Start accepts. Automaton has 6385 states and 7785 transitions. Word has length 122 [2023-12-16 08:11:25,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:25,564 INFO L495 AbstractCegarLoop]: Abstraction has 6385 states and 7785 transitions. [2023-12-16 08:11:25,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:25,564 INFO L276 IsEmpty]: Start isEmpty. Operand 6385 states and 7785 transitions. [2023-12-16 08:11:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:25,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:25,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:25,571 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 (33)] Ended with exit code 0 [2023-12-16 08:11:25,770 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 [2023-12-16 08:11:25,771 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:25,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:25,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1263624944, now seen corresponding path program 1 times [2023-12-16 08:11:25,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:25,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927712966] [2023-12-16 08:11:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:25,772 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 [2023-12-16 08:11:25,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:25,773 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) [2023-12-16 08:11:25,774 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 [2023-12-16 08:11:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:25,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:25,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:25,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:25,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:25,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927712966] [2023-12-16 08:11:25,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927712966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:25,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:25,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:25,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491084483] [2023-12-16 08:11:25,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:25,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:11:25,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:25,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:11:25,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:25,885 INFO L87 Difference]: Start difference. First operand 6385 states and 7785 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:26,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:26,668 INFO L93 Difference]: Finished difference Result 7928 states and 9874 transitions. [2023-12-16 08:11:26,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:11:26,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:26,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:26,681 INFO L225 Difference]: With dead ends: 7928 [2023-12-16 08:11:26,681 INFO L226 Difference]: Without dead ends: 6477 [2023-12-16 08:11:26,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:26,685 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 65 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:26,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1351 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:11:26,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6477 states. [2023-12-16 08:11:27,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6477 to 6389. [2023-12-16 08:11:27,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6389 states, 5038 states have (on average 1.2465263993648272) internal successors, (6280), 5184 states have internal predecessors, (6280), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-16 08:11:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6389 states to 6389 states and 7773 transitions. [2023-12-16 08:11:27,454 INFO L78 Accepts]: Start accepts. Automaton has 6389 states and 7773 transitions. Word has length 122 [2023-12-16 08:11:27,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:27,455 INFO L495 AbstractCegarLoop]: Abstraction has 6389 states and 7773 transitions. [2023-12-16 08:11:27,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:27,455 INFO L276 IsEmpty]: Start isEmpty. Operand 6389 states and 7773 transitions. [2023-12-16 08:11:27,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:27,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:27,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:27,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-16 08:11:27,661 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 [2023-12-16 08:11:27,661 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:27,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:27,662 INFO L85 PathProgramCache]: Analyzing trace with hash 470479506, now seen corresponding path program 1 times [2023-12-16 08:11:27,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:27,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328534273] [2023-12-16 08:11:27,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:27,662 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 [2023-12-16 08:11:27,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:27,664 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) [2023-12-16 08:11:27,665 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 [2023-12-16 08:11:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:27,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:27,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:27,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:27,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:27,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328534273] [2023-12-16 08:11:27,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328534273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:27,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:27,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:27,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042535613] [2023-12-16 08:11:27,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:27,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:11:27,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:27,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:11:27,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:27,784 INFO L87 Difference]: Start difference. First operand 6389 states and 7773 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:28,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:28,609 INFO L93 Difference]: Finished difference Result 8564 states and 10696 transitions. [2023-12-16 08:11:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:11:28,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:28,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:28,621 INFO L225 Difference]: With dead ends: 8564 [2023-12-16 08:11:28,621 INFO L226 Difference]: Without dead ends: 7109 [2023-12-16 08:11:28,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:28,625 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 56 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:28,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1354 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:11:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7109 states. [2023-12-16 08:11:29,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7109 to 6425. [2023-12-16 08:11:29,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6425 states, 5074 states have (on average 1.24477729601892) internal successors, (6316), 5220 states have internal predecessors, (6316), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-16 08:11:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6425 states to 6425 states and 7809 transitions. [2023-12-16 08:11:29,438 INFO L78 Accepts]: Start accepts. Automaton has 6425 states and 7809 transitions. Word has length 122 [2023-12-16 08:11:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:29,439 INFO L495 AbstractCegarLoop]: Abstraction has 6425 states and 7809 transitions. [2023-12-16 08:11:29,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 6425 states and 7809 transitions. [2023-12-16 08:11:29,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:29,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:29,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:29,445 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 (35)] Forceful destruction successful, exit code 0 [2023-12-16 08:11:29,645 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 [2023-12-16 08:11:29,645 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:29,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:29,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1916030000, now seen corresponding path program 1 times [2023-12-16 08:11:29,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:29,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398141037] [2023-12-16 08:11:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:29,646 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 [2023-12-16 08:11:29,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:29,647 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) [2023-12-16 08:11:29,676 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 [2023-12-16 08:11:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:29,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:29,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:29,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:29,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:29,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398141037] [2023-12-16 08:11:29,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398141037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:29,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:29,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:29,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026234913] [2023-12-16 08:11:29,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:29,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:11:29,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:29,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:11:29,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:29,757 INFO L87 Difference]: Start difference. First operand 6425 states and 7809 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:30,538 INFO L93 Difference]: Finished difference Result 7984 states and 9888 transitions. [2023-12-16 08:11:30,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:11:30,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:30,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:30,549 INFO L225 Difference]: With dead ends: 7984 [2023-12-16 08:11:30,550 INFO L226 Difference]: Without dead ends: 6493 [2023-12-16 08:11:30,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:30,553 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 47 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:30,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1349 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:11:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6493 states. [2023-12-16 08:11:31,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6493 to 6429. [2023-12-16 08:11:31,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6429 states, 5078 states have (on average 1.2414336352894841) internal successors, (6304), 5224 states have internal predecessors, (6304), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-16 08:11:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6429 states to 6429 states and 7797 transitions. [2023-12-16 08:11:31,314 INFO L78 Accepts]: Start accepts. Automaton has 6429 states and 7797 transitions. Word has length 122 [2023-12-16 08:11:31,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:31,314 INFO L495 AbstractCegarLoop]: Abstraction has 6429 states and 7797 transitions. [2023-12-16 08:11:31,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:31,314 INFO L276 IsEmpty]: Start isEmpty. Operand 6429 states and 7797 transitions. [2023-12-16 08:11:31,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:31,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:31,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:31,323 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 (36)] Forceful destruction successful, exit code 0 [2023-12-16 08:11:31,521 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 [2023-12-16 08:11:31,521 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:31,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:31,522 INFO L85 PathProgramCache]: Analyzing trace with hash 692757458, now seen corresponding path program 1 times [2023-12-16 08:11:31,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:31,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015814751] [2023-12-16 08:11:31,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:31,522 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 [2023-12-16 08:11:31,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:31,524 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) [2023-12-16 08:11:31,525 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 [2023-12-16 08:11:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:31,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:31,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:31,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:31,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:31,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015814751] [2023-12-16 08:11:31,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015814751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:31,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:31,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:31,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009560592] [2023-12-16 08:11:31,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:31,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:11:31,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:31,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:11:31,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:31,639 INFO L87 Difference]: Start difference. First operand 6429 states and 7797 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:32,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:32,432 INFO L93 Difference]: Finished difference Result 7980 states and 9848 transitions. [2023-12-16 08:11:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:11:32,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:32,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:32,444 INFO L225 Difference]: With dead ends: 7980 [2023-12-16 08:11:32,444 INFO L226 Difference]: Without dead ends: 6485 [2023-12-16 08:11:32,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:32,447 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 38 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:32,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1350 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:11:32,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6485 states. [2023-12-16 08:11:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6485 to 6433. [2023-12-16 08:11:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6433 states, 5082 states have (on average 1.2380952380952381) internal successors, (6292), 5228 states have internal predecessors, (6292), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-16 08:11:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6433 states to 6433 states and 7785 transitions. [2023-12-16 08:11:33,191 INFO L78 Accepts]: Start accepts. Automaton has 6433 states and 7785 transitions. Word has length 122 [2023-12-16 08:11:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:33,191 INFO L495 AbstractCegarLoop]: Abstraction has 6433 states and 7785 transitions. [2023-12-16 08:11:33,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:33,191 INFO L276 IsEmpty]: Start isEmpty. Operand 6433 states and 7785 transitions. [2023-12-16 08:11:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:33,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:33,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:33,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-16 08:11:33,397 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 [2023-12-16 08:11:33,397 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:33,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash 894581392, now seen corresponding path program 1 times [2023-12-16 08:11:33,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:33,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454446043] [2023-12-16 08:11:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:33,398 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 [2023-12-16 08:11:33,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:33,400 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) [2023-12-16 08:11:33,414 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 [2023-12-16 08:11:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:33,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:33,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:33,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:33,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:33,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454446043] [2023-12-16 08:11:33,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454446043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:33,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:33,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:33,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114988045] [2023-12-16 08:11:33,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:33,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:11:33,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:33,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:11:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:33,525 INFO L87 Difference]: Start difference. First operand 6433 states and 7785 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:34,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:34,359 INFO L93 Difference]: Finished difference Result 7964 states and 9792 transitions. [2023-12-16 08:11:34,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:11:34,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:34,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:34,371 INFO L225 Difference]: With dead ends: 7964 [2023-12-16 08:11:34,371 INFO L226 Difference]: Without dead ends: 6465 [2023-12-16 08:11:34,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:34,373 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 20 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:34,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1352 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:11:34,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6465 states. [2023-12-16 08:11:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6465 to 6437. [2023-12-16 08:11:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6437 states, 5086 states have (on average 1.2347620920173024) internal successors, (6280), 5232 states have internal predecessors, (6280), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-16 08:11:35,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6437 states to 6437 states and 7773 transitions. [2023-12-16 08:11:35,111 INFO L78 Accepts]: Start accepts. Automaton has 6437 states and 7773 transitions. Word has length 122 [2023-12-16 08:11:35,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:35,112 INFO L495 AbstractCegarLoop]: Abstraction has 6437 states and 7773 transitions. [2023-12-16 08:11:35,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:35,112 INFO L276 IsEmpty]: Start isEmpty. Operand 6437 states and 7773 transitions. [2023-12-16 08:11:35,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:35,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:35,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:35,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2023-12-16 08:11:35,318 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 [2023-12-16 08:11:35,318 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:35,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash 413501134, now seen corresponding path program 1 times [2023-12-16 08:11:35,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:35,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031269430] [2023-12-16 08:11:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:35,319 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 [2023-12-16 08:11:35,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:35,320 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) [2023-12-16 08:11:35,322 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 [2023-12-16 08:11:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:35,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:35,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:35,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:35,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:35,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031269430] [2023-12-16 08:11:35,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031269430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:35,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:35,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:35,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960699872] [2023-12-16 08:11:35,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:35,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:11:35,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:35,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:11:35,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:35,430 INFO L87 Difference]: Start difference. First operand 6437 states and 7773 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:36,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:36,235 INFO L93 Difference]: Finished difference Result 7960 states and 9752 transitions. [2023-12-16 08:11:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:11:36,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:36,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:36,249 INFO L225 Difference]: With dead ends: 7960 [2023-12-16 08:11:36,249 INFO L226 Difference]: Without dead ends: 6457 [2023-12-16 08:11:36,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:36,253 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 11 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:36,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1353 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:11:36,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2023-12-16 08:11:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 6441. [2023-12-16 08:11:37,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6441 states, 5090 states have (on average 1.231434184675835) internal successors, (6268), 5236 states have internal predecessors, (6268), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-16 08:11:37,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6441 states to 6441 states and 7761 transitions. [2023-12-16 08:11:37,022 INFO L78 Accepts]: Start accepts. Automaton has 6441 states and 7761 transitions. Word has length 122 [2023-12-16 08:11:37,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:37,024 INFO L495 AbstractCegarLoop]: Abstraction has 6441 states and 7761 transitions. [2023-12-16 08:11:37,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:37,024 INFO L276 IsEmpty]: Start isEmpty. Operand 6441 states and 7761 transitions. [2023-12-16 08:11:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:37,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:37,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:37,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-12-16 08:11:37,231 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 [2023-12-16 08:11:37,232 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:37,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:37,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1306987472, now seen corresponding path program 1 times [2023-12-16 08:11:37,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:37,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621000675] [2023-12-16 08:11:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:37,232 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 [2023-12-16 08:11:37,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:37,235 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) [2023-12-16 08:11:37,263 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 [2023-12-16 08:11:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:37,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:37,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:37,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:37,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:37,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621000675] [2023-12-16 08:11:37,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621000675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:37,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:37,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:37,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591106980] [2023-12-16 08:11:37,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:37,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:11:37,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:37,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:11:37,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:37,363 INFO L87 Difference]: Start difference. First operand 6441 states and 7761 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:38,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:38,140 INFO L93 Difference]: Finished difference Result 7956 states and 9712 transitions. [2023-12-16 08:11:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:11:38,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-16 08:11:38,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:38,153 INFO L225 Difference]: With dead ends: 7956 [2023-12-16 08:11:38,153 INFO L226 Difference]: Without dead ends: 6449 [2023-12-16 08:11:38,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:11:38,161 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 2 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:38,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1354 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:11:38,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6449 states. [2023-12-16 08:11:38,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6449 to 6445. [2023-12-16 08:11:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6445 states, 5094 states have (on average 1.2281115037298782) internal successors, (6256), 5240 states have internal predecessors, (6256), 625 states have call successors, (625), 522 states have call predecessors, (625), 724 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2023-12-16 08:11:38,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6445 states to 6445 states and 7749 transitions. [2023-12-16 08:11:38,949 INFO L78 Accepts]: Start accepts. Automaton has 6445 states and 7749 transitions. Word has length 122 [2023-12-16 08:11:38,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:38,950 INFO L495 AbstractCegarLoop]: Abstraction has 6445 states and 7749 transitions. [2023-12-16 08:11:38,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:11:38,950 INFO L276 IsEmpty]: Start isEmpty. Operand 6445 states and 7749 transitions. [2023-12-16 08:11:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:11:38,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:38,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:38,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-16 08:11:39,154 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 [2023-12-16 08:11:39,155 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:39,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:39,155 INFO L85 PathProgramCache]: Analyzing trace with hash -64819826, now seen corresponding path program 1 times [2023-12-16 08:11:39,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:39,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880958801] [2023-12-16 08:11:39,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:39,156 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 [2023-12-16 08:11:39,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:39,157 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) [2023-12-16 08:11:39,186 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 [2023-12-16 08:11:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:39,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:11:39,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:11:39,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:39,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:39,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880958801] [2023-12-16 08:11:39,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880958801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:39,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:39,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 08:11:39,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917967410] [2023-12-16 08:11:39,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:39,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:11:39,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:39,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:11:39,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:11:39,341 INFO L87 Difference]: Start difference. First operand 6445 states and 7749 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-16 08:11:40,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:40,215 INFO L93 Difference]: Finished difference Result 9424 states and 11506 transitions. [2023-12-16 08:11:40,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:11:40,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 122 [2023-12-16 08:11:40,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:40,227 INFO L225 Difference]: With dead ends: 9424 [2023-12-16 08:11:40,228 INFO L226 Difference]: Without dead ends: 7913 [2023-12-16 08:11:40,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:11:40,231 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 353 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:40,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 809 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:11:40,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7913 states. [2023-12-16 08:11:41,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7913 to 7911. [2023-12-16 08:11:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7911 states, 6464 states have (on average 1.2312809405940595) internal successors, (7959), 6613 states have internal predecessors, (7959), 676 states have call successors, (676), 566 states have call predecessors, (676), 769 states have return successors, (920), 734 states have call predecessors, (920), 673 states have call successors, (920) [2023-12-16 08:11:41,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7911 states to 7911 states and 9555 transitions. [2023-12-16 08:11:41,070 INFO L78 Accepts]: Start accepts. Automaton has 7911 states and 9555 transitions. Word has length 122 [2023-12-16 08:11:41,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:41,070 INFO L495 AbstractCegarLoop]: Abstraction has 7911 states and 9555 transitions. [2023-12-16 08:11:41,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-16 08:11:41,070 INFO L276 IsEmpty]: Start isEmpty. Operand 7911 states and 9555 transitions. [2023-12-16 08:11:41,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-16 08:11:41,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:41,074 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] [2023-12-16 08:11:41,078 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 (41)] Forceful destruction successful, exit code 0 [2023-12-16 08:11:41,278 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 [2023-12-16 08:11:41,278 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:41,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:41,279 INFO L85 PathProgramCache]: Analyzing trace with hash 287992733, now seen corresponding path program 1 times [2023-12-16 08:11:41,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:41,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928703366] [2023-12-16 08:11:41,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:41,279 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 [2023-12-16 08:11:41,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:41,280 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) [2023-12-16 08:11:41,281 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 [2023-12-16 08:11:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:41,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:11:41,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-16 08:11:41,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:41,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:41,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928703366] [2023-12-16 08:11:41,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928703366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:41,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:41,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:11:41,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131783140] [2023-12-16 08:11:41,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:41,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:11:41,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:41,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:11:41,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:11:41,411 INFO L87 Difference]: Start difference. First operand 7911 states and 9555 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-16 08:11:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:43,081 INFO L93 Difference]: Finished difference Result 15162 states and 18241 transitions. [2023-12-16 08:11:43,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 08:11:43,081 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 [2023-12-16 08:11:43,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:43,099 INFO L225 Difference]: With dead ends: 15162 [2023-12-16 08:11:43,099 INFO L226 Difference]: Without dead ends: 10054 [2023-12-16 08:11:43,109 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 [2023-12-16 08:11:43,110 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 677 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:43,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 708 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:11:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10054 states. [2023-12-16 08:11:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10054 to 9734. [2023-12-16 08:11:44,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9734 states, 7798 states have (on average 1.2290330854065146) internal successors, (9584), 7983 states have internal predecessors, (9584), 896 states have call successors, (896), 755 states have call predecessors, (896), 1038 states have return successors, (1214), 997 states have call predecessors, (1214), 893 states have call successors, (1214) [2023-12-16 08:11:44,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9734 states to 9734 states and 11694 transitions. [2023-12-16 08:11:44,300 INFO L78 Accepts]: Start accepts. Automaton has 9734 states and 11694 transitions. Word has length 145 [2023-12-16 08:11:44,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:11:44,300 INFO L495 AbstractCegarLoop]: Abstraction has 9734 states and 11694 transitions. [2023-12-16 08:11:44,300 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) [2023-12-16 08:11:44,301 INFO L276 IsEmpty]: Start isEmpty. Operand 9734 states and 11694 transitions. [2023-12-16 08:11:44,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-16 08:11:44,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:11:44,305 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:11:44,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-16 08:11:44,508 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 [2023-12-16 08:11:44,509 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:11:44,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:11:44,509 INFO L85 PathProgramCache]: Analyzing trace with hash -668068055, now seen corresponding path program 1 times [2023-12-16 08:11:44,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:11:44,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417203428] [2023-12-16 08:11:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:11:44,510 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 [2023-12-16 08:11:44,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:11:44,511 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) [2023-12-16 08:11:44,539 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 (43)] Waiting until timeout for monitored process [2023-12-16 08:11:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:11:44,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:11:44,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:11:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 08:11:44,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:11:44,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:11:44,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417203428] [2023-12-16 08:11:44,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417203428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:11:44,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:11:44,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 08:11:44,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282197615] [2023-12-16 08:11:44,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:11:44,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:11:44,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:11:44,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:11:44,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:11:44,753 INFO L87 Difference]: Start difference. First operand 9734 states and 11694 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 08:11:46,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:11:46,121 INFO L93 Difference]: Finished difference Result 15615 states and 19065 transitions. [2023-12-16 08:11:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:11:46,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 196 [2023-12-16 08:11:46,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:11:46,149 INFO L225 Difference]: With dead ends: 15615 [2023-12-16 08:11:46,149 INFO L226 Difference]: Without dead ends: 12638 [2023-12-16 08:11:46,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:11:46,157 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 361 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:11:46,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 768 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:11:46,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12638 states. Received shutdown request... [2023-12-16 08:11:47,093 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 08:11:47,093 WARN L340 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)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 08:11:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12638 to 12630. [2023-12-16 08:11:47,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12630 states, 10514 states have (on average 1.231881301122313) internal successors, (12952), 10703 states have internal predecessors, (12952), 990 states have call successors, (990), 839 states have call predecessors, (990), 1124 states have return successors, (1310), 1089 states have call predecessors, (1310), 987 states have call successors, (1310) [2023-12-16 08:11:47,488 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 08:11:47,493 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 (43)] Forceful destruction successful, exit code 0 [2023-12-16 08:11:47,693 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 [2023-12-16 08:11:47,694 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-16 08:11:47,695 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 08:11:47,698 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-16 08:11:47,699 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 08:11:47,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 08:11:47 BoogieIcfgContainer [2023-12-16 08:11:47,700 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 08:11:47,701 INFO L158 Benchmark]: Toolchain (without parser) took 70290.20ms. Allocated memory was 338.7MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 285.0MB in the beginning and 1.1GB in the end (delta: -818.6MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-16 08:11:47,701 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 186.6MB. Free memory was 137.7MB in the beginning and 137.6MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 08:11:47,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.46ms. Allocated memory is still 338.7MB. Free memory was 284.5MB in the beginning and 259.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-16 08:11:47,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.64ms. Allocated memory is still 338.7MB. Free memory was 259.4MB in the beginning and 255.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 08:11:47,701 INFO L158 Benchmark]: Boogie Preprocessor took 92.12ms. Allocated memory is still 338.7MB. Free memory was 255.7MB in the beginning and 249.9MB in the end (delta: 5.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 08:11:47,701 INFO L158 Benchmark]: RCFGBuilder took 983.32ms. Allocated memory is still 338.7MB. Free memory was 249.9MB in the beginning and 276.1MB in the end (delta: -26.2MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. [2023-12-16 08:11:47,701 INFO L158 Benchmark]: TraceAbstraction took 68753.57ms. Allocated memory was 338.7MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 275.6MB in the beginning and 1.1GB in the end (delta: -828.0MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-16 08:11:47,702 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 186.6MB. Free memory was 137.7MB in the beginning and 137.6MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 398.46ms. Allocated memory is still 338.7MB. Free memory was 284.5MB in the beginning and 259.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.64ms. Allocated memory is still 338.7MB. Free memory was 259.4MB in the beginning and 255.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 92.12ms. Allocated memory is still 338.7MB. Free memory was 255.7MB in the beginning and 249.9MB in the end (delta: 5.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 983.32ms. Allocated memory is still 338.7MB. Free memory was 249.9MB in the beginning and 276.1MB in the end (delta: -26.2MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. * TraceAbstraction took 68753.57ms. Allocated memory was 338.7MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 275.6MB in the beginning and 1.1GB in the end (delta: -828.0MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 496]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 496). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 28). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 16 procedures, 355 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 68.7s, OverallIterations: 42, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 32.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20396 SdHoareTripleChecker+Valid, 10.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19882 mSDsluCounter, 42040 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25307 mSDsCounter, 1418 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15155 IncrementalHoareTripleChecker+Invalid, 16573 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1418 mSolverCounterUnsat, 16733 mSDtfsCounter, 15155 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4495 GetRequests, 4368 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9734occurred in iteration=41, InterpolantAutomatonStates: 185, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 21.2s AutomataMinimizationTime, 42 MinimizatonAttempts, 3777 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 4441 NumberOfCodeBlocks, 4441 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 4466 ConstructedInterpolants, 0 QuantifiedInterpolants, 7232 SizeOfPredicates, 14 NumberOfNonLiveVariables, 12463 ConjunctsInSsa, 158 ConjunctsInUnsatCore, 43 InterpolantComputations, 41 PerfectInterpolantSequences, 199/203 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown