/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_3.cil+token_ring.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 02:39:20,274 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 02:39:20,344 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 02:39:20,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 02:39:20,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 02:39:20,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 02:39:20,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 02:39:20,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 02:39:20,373 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 02:39:20,376 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 02:39:20,376 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 02:39:20,376 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 02:39:20,377 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 02:39:20,378 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 02:39:20,378 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 02:39:20,378 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 02:39:20,378 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 02:39:20,379 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 02:39:20,379 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 02:39:20,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 02:39:20,380 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 02:39:20,380 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 02:39:20,380 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 02:39:20,381 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 02:39:20,381 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 02:39:20,381 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 02:39:20,381 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 02:39:20,381 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 02:39:20,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 02:39:20,381 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 02:39:20,382 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 02:39:20,382 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 02:39:20,382 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 02:39:20,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 02:39:20,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:39:20,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 02:39:20,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 02:39:20,383 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 02:39:20,383 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 02:39:20,383 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 02:39:20,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 02:39:20,384 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 02:39:20,384 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 02:39:20,384 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 02:39:20,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 02:39:20,384 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 02:39:20,384 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 02:39:20,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 02:39:20,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 02:39:20,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 02:39:20,605 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 02:39:20,606 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 02:39:20,607 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c [2023-12-22 02:39:21,725 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 02:39:21,913 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 02:39:21,914 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c [2023-12-22 02:39:21,923 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a973145d/e07ede4e02254479baeab11924e1fcb6/FLAG2d6aa33d4 [2023-12-22 02:39:21,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a973145d/e07ede4e02254479baeab11924e1fcb6 [2023-12-22 02:39:21,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 02:39:21,940 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 02:39:21,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 02:39:21,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 02:39:21,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 02:39:21,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:39:21" (1/1) ... [2023-12-22 02:39:21,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b916a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:21, skipping insertion in model container [2023-12-22 02:39:21,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:39:21" (1/1) ... [2023-12-22 02:39:22,001 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 02:39:22,106 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c[911,924] [2023-12-22 02:39:22,157 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c[8416,8429] [2023-12-22 02:39:22,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:39:22,206 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 02:39:22,223 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c[911,924] [2023-12-22 02:39:22,239 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c[8416,8429] [2023-12-22 02:39:22,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:39:22,279 INFO L206 MainTranslator]: Completed translation [2023-12-22 02:39:22,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:22 WrapperNode [2023-12-22 02:39:22,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 02:39:22,282 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 02:39:22,282 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 02:39:22,282 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 02:39:22,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:22" (1/1) ... [2023-12-22 02:39:22,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:22" (1/1) ... [2023-12-22 02:39:22,342 INFO L138 Inliner]: procedures = 64, calls = 74, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 607 [2023-12-22 02:39:22,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 02:39:22,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 02:39:22,343 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 02:39:22,343 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 02:39:22,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:22" (1/1) ... [2023-12-22 02:39:22,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:22" (1/1) ... [2023-12-22 02:39:22,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:22" (1/1) ... [2023-12-22 02:39:22,373 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-22 02:39:22,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:22" (1/1) ... [2023-12-22 02:39:22,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:22" (1/1) ... [2023-12-22 02:39:22,390 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:22" (1/1) ... [2023-12-22 02:39:22,397 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:22" (1/1) ... [2023-12-22 02:39:22,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:22" (1/1) ... [2023-12-22 02:39:22,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:22" (1/1) ... [2023-12-22 02:39:22,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 02:39:22,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 02:39:22,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 02:39:22,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 02:39:22,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:22" (1/1) ... [2023-12-22 02:39:22,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:39:22,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 02:39:22,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-22 02:39:22,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-22 02:39:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 02:39:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-22 02:39:22,519 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-22 02:39:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-22 02:39:22,520 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-22 02:39:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-22 02:39:22,520 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-22 02:39:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-22 02:39:22,520 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-22 02:39:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-22 02:39:22,520 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-22 02:39:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-22 02:39:22,520 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-22 02:39:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-22 02:39:22,520 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-22 02:39:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-22 02:39:22,521 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-22 02:39:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 02:39:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-22 02:39:22,521 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-22 02:39:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-22 02:39:22,522 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-22 02:39:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-22 02:39:22,523 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-22 02:39:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-22 02:39:22,523 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-22 02:39:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-22 02:39:22,523 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-22 02:39:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 02:39:22,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 02:39:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-22 02:39:22,524 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-22 02:39:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-22 02:39:22,524 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-22 02:39:22,632 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 02:39:22,633 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 02:39:23,112 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1bv32 == ~q_free~0); [2023-12-22 02:39:23,112 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1bv32 == ~q_free~0;~c_dr_st~0 := 2bv32;~c_dr_pc~0 := 2bv32;~a_t~0 := do_read_c_~a~0#1; [2023-12-22 02:39:23,185 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 02:39:23,231 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 02:39:23,231 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-22 02:39:23,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:39:23 BoogieIcfgContainer [2023-12-22 02:39:23,232 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 02:39:23,234 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 02:39:23,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 02:39:23,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 02:39:23,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:39:21" (1/3) ... [2023-12-22 02:39:23,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5545f579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:39:23, skipping insertion in model container [2023-12-22 02:39:23,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:22" (2/3) ... [2023-12-22 02:39:23,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5545f579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:39:23, skipping insertion in model container [2023-12-22 02:39:23,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:39:23" (3/3) ... [2023-12-22 02:39:23,239 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.04.cil-2.c [2023-12-22 02:39:23,253 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 02:39:23,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 02:39:23,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 02:39:23,306 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;@b930f39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 02:39:23,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 02:39:23,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 222 states have (on average 1.6756756756756757) internal successors, (372), 230 states have internal predecessors, (372), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-22 02:39:23,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-22 02:39:23,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:23,317 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] [2023-12-22 02:39:23,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:23,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:23,321 INFO L85 PathProgramCache]: Analyzing trace with hash -472300061, now seen corresponding path program 1 times [2023-12-22 02:39:23,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:23,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398531985] [2023-12-22 02:39:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:23,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:23,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:23,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:23,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 02:39:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:23,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:39:23,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:23,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:23,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:23,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398531985] [2023-12-22 02:39:23,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398531985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:23,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:23,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-22 02:39:23,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973529329] [2023-12-22 02:39:23,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:23,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:39:23,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:23,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:39:23,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:39:23,600 INFO L87 Difference]: Start difference. First operand has 276 states, 222 states have (on average 1.6756756756756757) internal successors, (372), 230 states have internal predecessors, (372), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:39:24,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:24,438 INFO L93 Difference]: Finished difference Result 641 states and 1033 transitions. [2023-12-22 02:39:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:39:24,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 57 [2023-12-22 02:39:24,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:24,449 INFO L225 Difference]: With dead ends: 641 [2023-12-22 02:39:24,449 INFO L226 Difference]: Without dead ends: 377 [2023-12-22 02:39:24,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:39:24,455 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 330 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:24,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 887 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 02:39:24,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-22 02:39:24,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 371. [2023-12-22 02:39:24,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 298 states have (on average 1.5402684563758389) internal successors, (459), 305 states have internal predecessors, (459), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (50), 46 states have call predecessors, (50), 45 states have call successors, (50) [2023-12-22 02:39:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 558 transitions. [2023-12-22 02:39:24,504 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 558 transitions. Word has length 57 [2023-12-22 02:39:24,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:24,504 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 558 transitions. [2023-12-22 02:39:24,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:39:24,505 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 558 transitions. [2023-12-22 02:39:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-22 02:39:24,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:24,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:24,523 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 [2023-12-22 02:39:24,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:24,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:24,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash 421186277, now seen corresponding path program 1 times [2023-12-22 02:39:24,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:24,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918722240] [2023-12-22 02:39:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:24,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:24,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:24,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:24,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-22 02:39:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:24,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:39:24,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:24,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:24,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:24,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918722240] [2023-12-22 02:39:24,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918722240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:24,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:24,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:39:24,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337209163] [2023-12-22 02:39:24,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:24,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:39:24,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:24,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:39:24,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:24,878 INFO L87 Difference]: Start difference. First operand 371 states and 558 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:39:24,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:24,948 INFO L93 Difference]: Finished difference Result 731 states and 1075 transitions. [2023-12-22 02:39:24,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:39:24,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2023-12-22 02:39:24,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:24,951 INFO L225 Difference]: With dead ends: 731 [2023-12-22 02:39:24,951 INFO L226 Difference]: Without dead ends: 543 [2023-12-22 02:39:24,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:24,953 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 376 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:24,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 517 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:39:24,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-12-22 02:39:24,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 537. [2023-12-22 02:39:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 428 states have (on average 1.5070093457943925) internal successors, (645), 437 states have internal predecessors, (645), 69 states have call successors, (69), 36 states have call predecessors, (69), 38 states have return successors, (73), 66 states have call predecessors, (73), 65 states have call successors, (73) [2023-12-22 02:39:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 787 transitions. [2023-12-22 02:39:24,986 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 787 transitions. Word has length 57 [2023-12-22 02:39:24,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:24,986 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 787 transitions. [2023-12-22 02:39:24,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:39:24,987 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 787 transitions. [2023-12-22 02:39:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:39:24,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:24,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:25,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:25,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:25,193 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:25,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:25,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1520257116, now seen corresponding path program 1 times [2023-12-22 02:39:25,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:25,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105400560] [2023-12-22 02:39:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:25,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:25,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:25,207 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:25,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-22 02:39:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:25,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:39:25,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:25,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:25,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:25,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105400560] [2023-12-22 02:39:25,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105400560] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:25,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:25,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 02:39:25,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014186932] [2023-12-22 02:39:25,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:25,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:39:25,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:25,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:39:25,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:39:25,306 INFO L87 Difference]: Start difference. First operand 537 states and 787 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:39:25,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:25,470 INFO L93 Difference]: Finished difference Result 909 states and 1321 transitions. [2023-12-22 02:39:25,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:39:25,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-22 02:39:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:25,474 INFO L225 Difference]: With dead ends: 909 [2023-12-22 02:39:25,474 INFO L226 Difference]: Without dead ends: 555 [2023-12-22 02:39:25,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:39:25,476 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 6 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:25,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1894 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:39:25,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-12-22 02:39:25,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 545. [2023-12-22 02:39:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 434 states have (on average 1.4953917050691243) internal successors, (649), 443 states have internal predecessors, (649), 69 states have call successors, (69), 36 states have call predecessors, (69), 40 states have return successors, (75), 68 states have call predecessors, (75), 65 states have call successors, (75) [2023-12-22 02:39:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 793 transitions. [2023-12-22 02:39:25,502 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 793 transitions. Word has length 58 [2023-12-22 02:39:25,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:25,503 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 793 transitions. [2023-12-22 02:39:25,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:39:25,503 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 793 transitions. [2023-12-22 02:39:25,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:39:25,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:25,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:25,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-22 02:39:25,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:25,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:25,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:25,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1592643674, now seen corresponding path program 1 times [2023-12-22 02:39:25,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:25,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195772318] [2023-12-22 02:39:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:25,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:25,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:25,718 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:25,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 02:39:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:25,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:39:25,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:25,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:25,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:25,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195772318] [2023-12-22 02:39:25,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195772318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:25,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:25,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:39:25,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240658829] [2023-12-22 02:39:25,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:25,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:39:25,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:25,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:39:25,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:25,855 INFO L87 Difference]: Start difference. First operand 545 states and 793 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:39:25,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:25,940 INFO L93 Difference]: Finished difference Result 1239 states and 1765 transitions. [2023-12-22 02:39:25,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:39:25,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-22 02:39:25,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:25,946 INFO L225 Difference]: With dead ends: 1239 [2023-12-22 02:39:25,946 INFO L226 Difference]: Without dead ends: 877 [2023-12-22 02:39:25,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:25,948 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 365 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:25,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 493 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:39:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-12-22 02:39:25,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 873. [2023-12-22 02:39:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 688 states have (on average 1.4520348837209303) internal successors, (999), 701 states have internal predecessors, (999), 109 states have call successors, (109), 64 states have call predecessors, (109), 74 states have return successors, (123), 110 states have call predecessors, (123), 105 states have call successors, (123) [2023-12-22 02:39:25,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1231 transitions. [2023-12-22 02:39:25,995 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1231 transitions. Word has length 58 [2023-12-22 02:39:25,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:25,996 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1231 transitions. [2023-12-22 02:39:25,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:39:25,996 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1231 transitions. [2023-12-22 02:39:25,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-22 02:39:25,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:25,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:26,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-22 02:39:26,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:26,205 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:26,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1458413662, now seen corresponding path program 1 times [2023-12-22 02:39:26,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:26,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898533028] [2023-12-22 02:39:26,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:26,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:26,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:26,208 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:26,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-22 02:39:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:26,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:39:26,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-22 02:39:26,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:26,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:26,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898533028] [2023-12-22 02:39:26,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898533028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:26,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:26,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 02:39:26,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080352913] [2023-12-22 02:39:26,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:26,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:39:26,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:26,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:39:26,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:39:26,330 INFO L87 Difference]: Start difference. First operand 873 states and 1231 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:39:26,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:26,444 INFO L93 Difference]: Finished difference Result 1587 states and 2223 transitions. [2023-12-22 02:39:26,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:39:26,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 73 [2023-12-22 02:39:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:26,448 INFO L225 Difference]: With dead ends: 1587 [2023-12-22 02:39:26,448 INFO L226 Difference]: Without dead ends: 897 [2023-12-22 02:39:26,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:39:26,450 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 3 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:26,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1889 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:39:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-12-22 02:39:26,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 889. [2023-12-22 02:39:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 700 states have (on average 1.4385714285714286) internal successors, (1007), 713 states have internal predecessors, (1007), 109 states have call successors, (109), 64 states have call predecessors, (109), 78 states have return successors, (127), 114 states have call predecessors, (127), 105 states have call successors, (127) [2023-12-22 02:39:26,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1243 transitions. [2023-12-22 02:39:26,486 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1243 transitions. Word has length 73 [2023-12-22 02:39:26,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:26,486 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 1243 transitions. [2023-12-22 02:39:26,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:39:26,487 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1243 transitions. [2023-12-22 02:39:26,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-22 02:39:26,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:26,488 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:26,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:26,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:26,694 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:26,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:26,694 INFO L85 PathProgramCache]: Analyzing trace with hash 991186468, now seen corresponding path program 1 times [2023-12-22 02:39:26,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:26,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953499875] [2023-12-22 02:39:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:26,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:26,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:26,696 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:26,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-22 02:39:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:26,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:39:26,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:26,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-22 02:39:26,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:26,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:26,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953499875] [2023-12-22 02:39:26,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953499875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:26,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:26,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-22 02:39:26,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035680432] [2023-12-22 02:39:26,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:26,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:39:26,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:26,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:39:26,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:39:26,851 INFO L87 Difference]: Start difference. First operand 889 states and 1243 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:39:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:27,419 INFO L93 Difference]: Finished difference Result 2479 states and 3428 transitions. [2023-12-22 02:39:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:39:27,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2023-12-22 02:39:27,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:27,426 INFO L225 Difference]: With dead ends: 2479 [2023-12-22 02:39:27,426 INFO L226 Difference]: Without dead ends: 1771 [2023-12-22 02:39:27,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-22 02:39:27,429 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 324 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:27,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 803 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:39:27,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2023-12-22 02:39:27,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1671. [2023-12-22 02:39:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1300 states have (on average 1.3946153846153846) internal successors, (1813), 1345 states have internal predecessors, (1813), 195 states have call successors, (195), 120 states have call predecessors, (195), 174 states have return successors, (283), 210 states have call predecessors, (283), 191 states have call successors, (283) [2023-12-22 02:39:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2291 transitions. [2023-12-22 02:39:27,515 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2291 transitions. Word has length 73 [2023-12-22 02:39:27,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:27,516 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 2291 transitions. [2023-12-22 02:39:27,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:39:27,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2291 transitions. [2023-12-22 02:39:27,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-22 02:39:27,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:27,518 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:27,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:27,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:27,723 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:27,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:27,724 INFO L85 PathProgramCache]: Analyzing trace with hash 147180966, now seen corresponding path program 1 times [2023-12-22 02:39:27,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:27,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868575085] [2023-12-22 02:39:27,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:27,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:27,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:27,726 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:27,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-22 02:39:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:27,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:27,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-22 02:39:27,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:27,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:27,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868575085] [2023-12-22 02:39:27,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868575085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:27,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:27,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:27,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075433494] [2023-12-22 02:39:27,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:27,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:39:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:39:27,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:39:27,860 INFO L87 Difference]: Start difference. First operand 1671 states and 2291 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-22 02:39:28,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:28,297 INFO L93 Difference]: Finished difference Result 4587 states and 6274 transitions. [2023-12-22 02:39:28,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:39:28,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 73 [2023-12-22 02:39:28,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:28,311 INFO L225 Difference]: With dead ends: 4587 [2023-12-22 02:39:28,311 INFO L226 Difference]: Without dead ends: 3115 [2023-12-22 02:39:28,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:39:28,315 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 536 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:28,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 442 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:39:28,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2023-12-22 02:39:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 3111. [2023-12-22 02:39:28,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 2384 states have (on average 1.3544463087248322) internal successors, (3229), 2477 states have internal predecessors, (3229), 375 states have call successors, (375), 232 states have call predecessors, (375), 350 states have return successors, (620), 410 states have call predecessors, (620), 371 states have call successors, (620) [2023-12-22 02:39:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4224 transitions. [2023-12-22 02:39:28,514 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4224 transitions. Word has length 73 [2023-12-22 02:39:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:28,514 INFO L495 AbstractCegarLoop]: Abstraction has 3111 states and 4224 transitions. [2023-12-22 02:39:28,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-22 02:39:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4224 transitions. [2023-12-22 02:39:28,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-22 02:39:28,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:28,518 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] [2023-12-22 02:39:28,522 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 [2023-12-22 02:39:28,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:28,722 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:28,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:28,722 INFO L85 PathProgramCache]: Analyzing trace with hash -757557422, now seen corresponding path program 1 times [2023-12-22 02:39:28,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:28,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323589921] [2023-12-22 02:39:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:28,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:28,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:28,724 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:28,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-22 02:39:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:28,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:39:28,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:28,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:28,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:28,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323589921] [2023-12-22 02:39:28,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323589921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:28,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:28,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:39:28,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860227832] [2023-12-22 02:39:28,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:28,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:39:28,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:28,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:39:28,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:28,820 INFO L87 Difference]: Start difference. First operand 3111 states and 4224 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:39:29,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:29,066 INFO L93 Difference]: Finished difference Result 8779 states and 11853 transitions. [2023-12-22 02:39:29,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:39:29,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 75 [2023-12-22 02:39:29,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:29,085 INFO L225 Difference]: With dead ends: 8779 [2023-12-22 02:39:29,085 INFO L226 Difference]: Without dead ends: 4535 [2023-12-22 02:39:29,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:29,094 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 110 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:29,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 857 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:39:29,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4535 states. [2023-12-22 02:39:29,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4535 to 4535. [2023-12-22 02:39:29,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4535 states, 3464 states have (on average 1.3397806004618937) internal successors, (4641), 3597 states have internal predecessors, (4641), 539 states have call successors, (539), 344 states have call predecessors, (539), 530 states have return successors, (952), 602 states have call predecessors, (952), 535 states have call successors, (952) [2023-12-22 02:39:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 6132 transitions. [2023-12-22 02:39:29,341 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 6132 transitions. Word has length 75 [2023-12-22 02:39:29,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:29,341 INFO L495 AbstractCegarLoop]: Abstraction has 4535 states and 6132 transitions. [2023-12-22 02:39:29,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:39:29,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 6132 transitions. [2023-12-22 02:39:29,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:29,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:29,348 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] [2023-12-22 02:39:29,354 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 [2023-12-22 02:39:29,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:29,555 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:29,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:29,555 INFO L85 PathProgramCache]: Analyzing trace with hash 643537407, now seen corresponding path program 1 times [2023-12-22 02:39:29,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:29,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70891861] [2023-12-22 02:39:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:29,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:29,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:29,557 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:29,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-22 02:39:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:29,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:39:29,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:29,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:29,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:29,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70891861] [2023-12-22 02:39:29,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70891861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:29,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:29,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:39:29,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320751892] [2023-12-22 02:39:29,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:29,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:39:29,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:29,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:39:29,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:29,649 INFO L87 Difference]: Start difference. First operand 4535 states and 6132 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:29,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:29,838 INFO L93 Difference]: Finished difference Result 4696 states and 6382 transitions. [2023-12-22 02:39:29,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:39:29,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 82 [2023-12-22 02:39:29,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:29,852 INFO L225 Difference]: With dead ends: 4696 [2023-12-22 02:39:29,852 INFO L226 Difference]: Without dead ends: 4535 [2023-12-22 02:39:29,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:29,854 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 254 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:29,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 513 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:39:29,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4535 states. [2023-12-22 02:39:30,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4535 to 4535. [2023-12-22 02:39:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4535 states, 3464 states have (on average 1.3394919168591224) internal successors, (4640), 3597 states have internal predecessors, (4640), 539 states have call successors, (539), 344 states have call predecessors, (539), 530 states have return successors, (952), 602 states have call predecessors, (952), 535 states have call successors, (952) [2023-12-22 02:39:30,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 6131 transitions. [2023-12-22 02:39:30,051 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 6131 transitions. Word has length 82 [2023-12-22 02:39:30,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:30,051 INFO L495 AbstractCegarLoop]: Abstraction has 4535 states and 6131 transitions. [2023-12-22 02:39:30,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:30,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 6131 transitions. [2023-12-22 02:39:30,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:30,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:30,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:30,062 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 (10)] Ended with exit code 0 [2023-12-22 02:39:30,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:30,260 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:30,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:30,261 INFO L85 PathProgramCache]: Analyzing trace with hash 566636609, now seen corresponding path program 1 times [2023-12-22 02:39:30,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:30,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558088798] [2023-12-22 02:39:30,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:30,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:30,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:30,262 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:30,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-22 02:39:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:30,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:30,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:30,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:30,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:30,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558088798] [2023-12-22 02:39:30,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558088798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:30,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:30,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:30,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335564366] [2023-12-22 02:39:30,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:30,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:39:30,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:30,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:39:30,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:39:30,397 INFO L87 Difference]: Start difference. First operand 4535 states and 6131 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:31,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:31,093 INFO L93 Difference]: Finished difference Result 4870 states and 6660 transitions. [2023-12-22 02:39:31,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:39:31,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 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 82 [2023-12-22 02:39:31,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:31,111 INFO L225 Difference]: With dead ends: 4870 [2023-12-22 02:39:31,112 INFO L226 Difference]: Without dead ends: 4711 [2023-12-22 02:39:31,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:39:31,114 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 643 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:31,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 839 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:39:31,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2023-12-22 02:39:31,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 4696. [2023-12-22 02:39:31,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4696 states, 3605 states have (on average 1.3497919556171982) internal successors, (4866), 3739 states have internal predecessors, (4866), 552 states have call successors, (552), 350 states have call predecessors, (552), 537 states have return successors, (966), 615 states have call predecessors, (966), 548 states have call successors, (966) [2023-12-22 02:39:31,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4696 states to 4696 states and 6384 transitions. [2023-12-22 02:39:31,378 INFO L78 Accepts]: Start accepts. Automaton has 4696 states and 6384 transitions. Word has length 82 [2023-12-22 02:39:31,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:31,378 INFO L495 AbstractCegarLoop]: Abstraction has 4696 states and 6384 transitions. [2023-12-22 02:39:31,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4696 states and 6384 transitions. [2023-12-22 02:39:31,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:31,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:31,383 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] [2023-12-22 02:39:31,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:31,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:31,587 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:31,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:31,587 INFO L85 PathProgramCache]: Analyzing trace with hash -435462655, now seen corresponding path program 1 times [2023-12-22 02:39:31,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:31,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317667595] [2023-12-22 02:39:31,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:31,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:31,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:31,590 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:31,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-22 02:39:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:31,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:31,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:31,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:31,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:31,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317667595] [2023-12-22 02:39:31,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317667595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:31,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:31,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:31,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429231715] [2023-12-22 02:39:31,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:31,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:39:31,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:31,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:39:31,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:39:31,705 INFO L87 Difference]: Start difference. First operand 4696 states and 6384 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:32,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:32,210 INFO L93 Difference]: Finished difference Result 5016 states and 6891 transitions. [2023-12-22 02:39:32,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:39:32,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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 82 [2023-12-22 02:39:32,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:32,256 INFO L225 Difference]: With dead ends: 5016 [2023-12-22 02:39:32,256 INFO L226 Difference]: Without dead ends: 4696 [2023-12-22 02:39:32,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:39:32,262 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 515 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:32,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 592 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:39:32,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2023-12-22 02:39:32,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4696. [2023-12-22 02:39:32,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4696 states, 3605 states have (on average 1.3478502080443828) internal successors, (4859), 3739 states have internal predecessors, (4859), 552 states have call successors, (552), 350 states have call predecessors, (552), 537 states have return successors, (966), 615 states have call predecessors, (966), 548 states have call successors, (966) [2023-12-22 02:39:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4696 states to 4696 states and 6377 transitions. [2023-12-22 02:39:32,508 INFO L78 Accepts]: Start accepts. Automaton has 4696 states and 6377 transitions. Word has length 82 [2023-12-22 02:39:32,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:32,508 INFO L495 AbstractCegarLoop]: Abstraction has 4696 states and 6377 transitions. [2023-12-22 02:39:32,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:32,509 INFO L276 IsEmpty]: Start isEmpty. Operand 4696 states and 6377 transitions. [2023-12-22 02:39:32,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:32,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:32,513 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] [2023-12-22 02:39:32,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:32,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:32,718 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:32,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:32,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1853261759, now seen corresponding path program 1 times [2023-12-22 02:39:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:32,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598272299] [2023-12-22 02:39:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:32,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:32,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:32,720 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:32,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-22 02:39:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:32,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:32,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:32,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:32,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:32,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598272299] [2023-12-22 02:39:32,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598272299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:32,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:32,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:32,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470863649] [2023-12-22 02:39:32,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:32,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:39:32,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:32,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:39:32,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:39:32,838 INFO L87 Difference]: Start difference. First operand 4696 states and 6377 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:33,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:33,358 INFO L93 Difference]: Finished difference Result 5016 states and 6877 transitions. [2023-12-22 02:39:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:39:33,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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 82 [2023-12-22 02:39:33,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:33,375 INFO L225 Difference]: With dead ends: 5016 [2023-12-22 02:39:33,375 INFO L226 Difference]: Without dead ends: 4696 [2023-12-22 02:39:33,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:39:33,377 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 509 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:33,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 585 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:39:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2023-12-22 02:39:33,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4696. [2023-12-22 02:39:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4696 states, 3605 states have (on average 1.3459084604715672) internal successors, (4852), 3739 states have internal predecessors, (4852), 552 states have call successors, (552), 350 states have call predecessors, (552), 537 states have return successors, (966), 615 states have call predecessors, (966), 548 states have call successors, (966) [2023-12-22 02:39:33,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4696 states to 4696 states and 6370 transitions. [2023-12-22 02:39:33,642 INFO L78 Accepts]: Start accepts. Automaton has 4696 states and 6370 transitions. Word has length 82 [2023-12-22 02:39:33,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:33,643 INFO L495 AbstractCegarLoop]: Abstraction has 4696 states and 6370 transitions. [2023-12-22 02:39:33,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:33,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4696 states and 6370 transitions. [2023-12-22 02:39:33,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:33,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:33,648 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] [2023-12-22 02:39:33,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:33,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:33,853 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:33,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:33,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1287591425, now seen corresponding path program 1 times [2023-12-22 02:39:33,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:33,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395004358] [2023-12-22 02:39:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:33,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:33,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:33,856 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:33,857 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 (14)] Waiting until timeout for monitored process [2023-12-22 02:39:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:33,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:33,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:33,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:33,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:33,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395004358] [2023-12-22 02:39:33,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395004358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:33,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:33,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:33,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293296943] [2023-12-22 02:39:33,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:33,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:39:33,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:33,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:39:33,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:39:33,969 INFO L87 Difference]: Start difference. First operand 4696 states and 6370 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:34,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:34,572 INFO L93 Difference]: Finished difference Result 5016 states and 6863 transitions. [2023-12-22 02:39:34,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:39:34,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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 82 [2023-12-22 02:39:34,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:34,592 INFO L225 Difference]: With dead ends: 5016 [2023-12-22 02:39:34,592 INFO L226 Difference]: Without dead ends: 4696 [2023-12-22 02:39:34,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:39:34,595 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 503 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:34,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 578 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:39:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2023-12-22 02:39:34,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4696. [2023-12-22 02:39:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4696 states, 3605 states have (on average 1.3439667128987518) internal successors, (4845), 3739 states have internal predecessors, (4845), 552 states have call successors, (552), 350 states have call predecessors, (552), 537 states have return successors, (966), 615 states have call predecessors, (966), 548 states have call successors, (966) [2023-12-22 02:39:34,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4696 states to 4696 states and 6363 transitions. [2023-12-22 02:39:34,869 INFO L78 Accepts]: Start accepts. Automaton has 4696 states and 6363 transitions. Word has length 82 [2023-12-22 02:39:34,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:34,870 INFO L495 AbstractCegarLoop]: Abstraction has 4696 states and 6363 transitions. [2023-12-22 02:39:34,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:34,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4696 states and 6363 transitions. [2023-12-22 02:39:34,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:34,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:34,878 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] [2023-12-22 02:39:34,903 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 [2023-12-22 02:39:35,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:35,083 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:35,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:35,084 INFO L85 PathProgramCache]: Analyzing trace with hash 696172609, now seen corresponding path program 1 times [2023-12-22 02:39:35,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:35,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231972012] [2023-12-22 02:39:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:35,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:35,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:35,085 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:35,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 02:39:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:35,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:35,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:35,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:35,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:35,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:35,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231972012] [2023-12-22 02:39:35,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231972012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:35,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:35,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:35,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354788284] [2023-12-22 02:39:35,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:35,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:39:35,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:35,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:39:35,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:39:35,199 INFO L87 Difference]: Start difference. First operand 4696 states and 6363 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:35,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:35,719 INFO L93 Difference]: Finished difference Result 5016 states and 6849 transitions. [2023-12-22 02:39:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:39:35,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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 82 [2023-12-22 02:39:35,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:35,731 INFO L225 Difference]: With dead ends: 5016 [2023-12-22 02:39:35,731 INFO L226 Difference]: Without dead ends: 4696 [2023-12-22 02:39:35,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:39:35,733 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 497 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:35,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 571 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:39:35,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2023-12-22 02:39:36,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4696. [2023-12-22 02:39:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4696 states, 3605 states have (on average 1.3420249653259362) internal successors, (4838), 3739 states have internal predecessors, (4838), 552 states have call successors, (552), 350 states have call predecessors, (552), 537 states have return successors, (966), 615 states have call predecessors, (966), 548 states have call successors, (966) [2023-12-22 02:39:36,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4696 states to 4696 states and 6356 transitions. [2023-12-22 02:39:36,017 INFO L78 Accepts]: Start accepts. Automaton has 4696 states and 6356 transitions. Word has length 82 [2023-12-22 02:39:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:36,018 INFO L495 AbstractCegarLoop]: Abstraction has 4696 states and 6356 transitions. [2023-12-22 02:39:36,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:36,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4696 states and 6356 transitions. [2023-12-22 02:39:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:36,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:36,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:36,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:36,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:36,228 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:36,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash -990007229, now seen corresponding path program 1 times [2023-12-22 02:39:36,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:36,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633209000] [2023-12-22 02:39:36,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:36,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:36,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:36,230 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:36,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-22 02:39:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:36,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:36,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:36,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:36,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:36,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633209000] [2023-12-22 02:39:36,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633209000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:36,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:36,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:36,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157936048] [2023-12-22 02:39:36,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:36,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:39:36,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:36,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:39:36,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:39:36,344 INFO L87 Difference]: Start difference. First operand 4696 states and 6356 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:36,979 INFO L93 Difference]: Finished difference Result 5086 states and 6947 transitions. [2023-12-22 02:39:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:39:36,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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 82 [2023-12-22 02:39:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:36,991 INFO L225 Difference]: With dead ends: 5086 [2023-12-22 02:39:36,991 INFO L226 Difference]: Without dead ends: 4766 [2023-12-22 02:39:36,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:39:36,993 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 532 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:36,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 565 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:39:36,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4766 states. [2023-12-22 02:39:37,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4766 to 4766. [2023-12-22 02:39:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4766 states, 3669 states have (on average 1.3417825020441536) internal successors, (4923), 3803 states have internal predecessors, (4923), 554 states have call successors, (554), 354 states have call predecessors, (554), 541 states have return successors, (968), 617 states have call predecessors, (968), 550 states have call successors, (968) [2023-12-22 02:39:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 6445 transitions. [2023-12-22 02:39:37,251 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 6445 transitions. Word has length 82 [2023-12-22 02:39:37,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:37,251 INFO L495 AbstractCegarLoop]: Abstraction has 4766 states and 6445 transitions. [2023-12-22 02:39:37,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:37,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 6445 transitions. [2023-12-22 02:39:37,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:37,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:37,254 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] [2023-12-22 02:39:37,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:37,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:37,459 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:37,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:37,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1376081122, now seen corresponding path program 1 times [2023-12-22 02:39:37,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:37,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820181235] [2023-12-22 02:39:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:37,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:37,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:37,461 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:37,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-22 02:39:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:37,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:37,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:37,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:37,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:37,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820181235] [2023-12-22 02:39:37,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820181235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:37,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:37,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:37,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283803001] [2023-12-22 02:39:37,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:37,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:39:37,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:37,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:39:37,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:39:37,580 INFO L87 Difference]: Start difference. First operand 4766 states and 6445 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:38,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:38,305 INFO L93 Difference]: Finished difference Result 5226 states and 7125 transitions. [2023-12-22 02:39:38,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:39:38,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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 82 [2023-12-22 02:39:38,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:38,318 INFO L225 Difference]: With dead ends: 5226 [2023-12-22 02:39:38,318 INFO L226 Difference]: Without dead ends: 4836 [2023-12-22 02:39:38,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:39:38,320 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 526 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:38,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 558 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:39:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2023-12-22 02:39:38,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 4836. [2023-12-22 02:39:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4836 states, 3733 states have (on average 1.34047682828824) internal successors, (5004), 3867 states have internal predecessors, (5004), 556 states have call successors, (556), 358 states have call predecessors, (556), 545 states have return successors, (970), 619 states have call predecessors, (970), 552 states have call successors, (970) [2023-12-22 02:39:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4836 states to 4836 states and 6530 transitions. [2023-12-22 02:39:38,654 INFO L78 Accepts]: Start accepts. Automaton has 4836 states and 6530 transitions. Word has length 82 [2023-12-22 02:39:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:38,655 INFO L495 AbstractCegarLoop]: Abstraction has 4836 states and 6530 transitions. [2023-12-22 02:39:38,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:38,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4836 states and 6530 transitions. [2023-12-22 02:39:38,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:38,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:38,659 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] [2023-12-22 02:39:38,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:38,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:38,864 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:38,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:38,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1816912094, now seen corresponding path program 1 times [2023-12-22 02:39:38,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:38,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140077165] [2023-12-22 02:39:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:38,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:38,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:38,881 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:38,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-22 02:39:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:39,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:39,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:39,055 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:39,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:39,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140077165] [2023-12-22 02:39:39,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140077165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:39,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:39,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:39,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706941492] [2023-12-22 02:39:39,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:39,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:39:39,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:39,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:39:39,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:39:39,057 INFO L87 Difference]: Start difference. First operand 4836 states and 6530 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:39,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:39,642 INFO L93 Difference]: Finished difference Result 5366 states and 7295 transitions. [2023-12-22 02:39:39,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:39:39,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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 82 [2023-12-22 02:39:39,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:39,659 INFO L225 Difference]: With dead ends: 5366 [2023-12-22 02:39:39,659 INFO L226 Difference]: Without dead ends: 4906 [2023-12-22 02:39:39,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:39:39,663 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 519 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:39,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 551 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:39:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4906 states. [2023-12-22 02:39:40,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4906 to 4906. [2023-12-22 02:39:40,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4906 states, 3797 states have (on average 1.338161706610482) internal successors, (5081), 3931 states have internal predecessors, (5081), 558 states have call successors, (558), 362 states have call predecessors, (558), 549 states have return successors, (972), 621 states have call predecessors, (972), 554 states have call successors, (972) [2023-12-22 02:39:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4906 states to 4906 states and 6611 transitions. [2023-12-22 02:39:40,077 INFO L78 Accepts]: Start accepts. Automaton has 4906 states and 6611 transitions. Word has length 82 [2023-12-22 02:39:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:40,078 INFO L495 AbstractCegarLoop]: Abstraction has 4906 states and 6611 transitions. [2023-12-22 02:39:40,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4906 states and 6611 transitions. [2023-12-22 02:39:40,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:40,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:40,082 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] [2023-12-22 02:39:40,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:40,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:40,292 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:40,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:40,293 INFO L85 PathProgramCache]: Analyzing trace with hash -272994687, now seen corresponding path program 1 times [2023-12-22 02:39:40,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:40,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600960746] [2023-12-22 02:39:40,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:40,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:40,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:40,294 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:40,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-22 02:39:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:40,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:40,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:40,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:40,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:40,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600960746] [2023-12-22 02:39:40,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600960746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:40,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:40,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:40,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233316358] [2023-12-22 02:39:40,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:40,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:39:40,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:40,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:39:40,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:39:40,421 INFO L87 Difference]: Start difference. First operand 4906 states and 6611 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:41,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:41,050 INFO L93 Difference]: Finished difference Result 5506 states and 7457 transitions. [2023-12-22 02:39:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:39:41,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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 82 [2023-12-22 02:39:41,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:41,061 INFO L225 Difference]: With dead ends: 5506 [2023-12-22 02:39:41,061 INFO L226 Difference]: Without dead ends: 4976 [2023-12-22 02:39:41,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:39:41,063 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 512 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:41,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 544 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:39:41,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2023-12-22 02:39:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4976. [2023-12-22 02:39:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4976 states, 3861 states have (on average 1.334887334887335) internal successors, (5154), 3995 states have internal predecessors, (5154), 560 states have call successors, (560), 366 states have call predecessors, (560), 553 states have return successors, (974), 623 states have call predecessors, (974), 556 states have call successors, (974) [2023-12-22 02:39:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4976 states to 4976 states and 6688 transitions. [2023-12-22 02:39:41,475 INFO L78 Accepts]: Start accepts. Automaton has 4976 states and 6688 transitions. Word has length 82 [2023-12-22 02:39:41,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:41,476 INFO L495 AbstractCegarLoop]: Abstraction has 4976 states and 6688 transitions. [2023-12-22 02:39:41,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 4976 states and 6688 transitions. [2023-12-22 02:39:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:41,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:41,480 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] [2023-12-22 02:39:41,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:41,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:41,685 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:41,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:41,685 INFO L85 PathProgramCache]: Analyzing trace with hash -708665406, now seen corresponding path program 1 times [2023-12-22 02:39:41,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:41,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294451691] [2023-12-22 02:39:41,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:41,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:41,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:41,687 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:41,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-22 02:39:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:41,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:41,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:41,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:41,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:41,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294451691] [2023-12-22 02:39:41,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294451691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:41,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:41,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:41,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019037718] [2023-12-22 02:39:41,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:41,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:39:41,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:41,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:39:41,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:39:41,778 INFO L87 Difference]: Start difference. First operand 4976 states and 6688 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:42,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:42,120 INFO L93 Difference]: Finished difference Result 5855 states and 7896 transitions. [2023-12-22 02:39:42,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:39:42,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (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 82 [2023-12-22 02:39:42,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:42,134 INFO L225 Difference]: With dead ends: 5855 [2023-12-22 02:39:42,134 INFO L226 Difference]: Without dead ends: 5256 [2023-12-22 02:39:42,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:39:42,137 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 38 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:42,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1057 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:39:42,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2023-12-22 02:39:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 4996. [2023-12-22 02:39:42,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4996 states, 3881 states have (on average 1.3331615562999226) internal successors, (5174), 4015 states have internal predecessors, (5174), 560 states have call successors, (560), 366 states have call predecessors, (560), 553 states have return successors, (974), 623 states have call predecessors, (974), 556 states have call successors, (974) [2023-12-22 02:39:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4996 states to 4996 states and 6708 transitions. [2023-12-22 02:39:42,561 INFO L78 Accepts]: Start accepts. Automaton has 4996 states and 6708 transitions. Word has length 82 [2023-12-22 02:39:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:42,561 INFO L495 AbstractCegarLoop]: Abstraction has 4996 states and 6708 transitions. [2023-12-22 02:39:42,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:42,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4996 states and 6708 transitions. [2023-12-22 02:39:42,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:42,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:42,567 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] [2023-12-22 02:39:42,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:42,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:42,772 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:42,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:42,772 INFO L85 PathProgramCache]: Analyzing trace with hash 829674624, now seen corresponding path program 1 times [2023-12-22 02:39:42,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:42,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624841059] [2023-12-22 02:39:42,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:42,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:42,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:42,774 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:42,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-22 02:39:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:42,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:42,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:42,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:42,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:42,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:42,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624841059] [2023-12-22 02:39:42,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624841059] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:42,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:42,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:42,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127656868] [2023-12-22 02:39:42,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:42,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:39:42,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:42,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:39:42,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:39:42,862 INFO L87 Difference]: Start difference. First operand 4996 states and 6708 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:43,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:43,221 INFO L93 Difference]: Finished difference Result 5659 states and 7612 transitions. [2023-12-22 02:39:43,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:39:43,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (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 82 [2023-12-22 02:39:43,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:43,232 INFO L225 Difference]: With dead ends: 5659 [2023-12-22 02:39:43,232 INFO L226 Difference]: Without dead ends: 5040 [2023-12-22 02:39:43,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:39:43,234 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 29 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:43,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1057 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:39:43,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2023-12-22 02:39:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 5000. [2023-12-22 02:39:43,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5000 states, 3885 states have (on average 1.3307593307593308) internal successors, (5170), 4019 states have internal predecessors, (5170), 560 states have call successors, (560), 366 states have call predecessors, (560), 553 states have return successors, (974), 623 states have call predecessors, (974), 556 states have call successors, (974) [2023-12-22 02:39:43,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5000 states to 5000 states and 6704 transitions. [2023-12-22 02:39:43,551 INFO L78 Accepts]: Start accepts. Automaton has 5000 states and 6704 transitions. Word has length 82 [2023-12-22 02:39:43,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:43,552 INFO L495 AbstractCegarLoop]: Abstraction has 5000 states and 6704 transitions. [2023-12-22 02:39:43,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:43,552 INFO L276 IsEmpty]: Start isEmpty. Operand 5000 states and 6704 transitions. [2023-12-22 02:39:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:43,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:43,555 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] [2023-12-22 02:39:43,571 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 (21)] Ended with exit code 0 [2023-12-22 02:39:43,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:43,760 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:43,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:43,760 INFO L85 PathProgramCache]: Analyzing trace with hash 476586242, now seen corresponding path program 1 times [2023-12-22 02:39:43,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:43,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900484057] [2023-12-22 02:39:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:43,761 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:43,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:43,762 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:43,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-22 02:39:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:43,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:43,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:43,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:43,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:43,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900484057] [2023-12-22 02:39:43,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900484057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:43,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:43,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:43,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561375895] [2023-12-22 02:39:43,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:43,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:39:43,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:43,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:39:43,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:39:43,847 INFO L87 Difference]: Start difference. First operand 5000 states and 6704 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:44,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:44,201 INFO L93 Difference]: Finished difference Result 5655 states and 7588 transitions. [2023-12-22 02:39:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:39:44,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (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 82 [2023-12-22 02:39:44,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:44,219 INFO L225 Difference]: With dead ends: 5655 [2023-12-22 02:39:44,219 INFO L226 Difference]: Without dead ends: 5032 [2023-12-22 02:39:44,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:39:44,228 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 20 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:44,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1055 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:39:44,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5032 states. [2023-12-22 02:39:44,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5032 to 5004. [2023-12-22 02:39:44,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5004 states, 3889 states have (on average 1.328362046798663) internal successors, (5166), 4023 states have internal predecessors, (5166), 560 states have call successors, (560), 366 states have call predecessors, (560), 553 states have return successors, (974), 623 states have call predecessors, (974), 556 states have call successors, (974) [2023-12-22 02:39:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5004 states to 5004 states and 6700 transitions. [2023-12-22 02:39:44,586 INFO L78 Accepts]: Start accepts. Automaton has 5004 states and 6700 transitions. Word has length 82 [2023-12-22 02:39:44,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:44,586 INFO L495 AbstractCegarLoop]: Abstraction has 5004 states and 6700 transitions. [2023-12-22 02:39:44,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:44,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5004 states and 6700 transitions. [2023-12-22 02:39:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:44,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:44,590 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] [2023-12-22 02:39:44,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-22 02:39:44,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:44,794 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:44,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash 724732736, now seen corresponding path program 1 times [2023-12-22 02:39:44,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:44,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602258609] [2023-12-22 02:39:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:44,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:44,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:44,796 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:44,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-22 02:39:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:44,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:44,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:44,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:44,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:44,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602258609] [2023-12-22 02:39:44,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602258609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:44,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:44,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:44,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909140742] [2023-12-22 02:39:44,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:44,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:39:44,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:44,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:39:44,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:39:44,881 INFO L87 Difference]: Start difference. First operand 5004 states and 6700 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:45,221 INFO L93 Difference]: Finished difference Result 5651 states and 7564 transitions. [2023-12-22 02:39:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:39:45,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (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 82 [2023-12-22 02:39:45,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:45,234 INFO L225 Difference]: With dead ends: 5651 [2023-12-22 02:39:45,234 INFO L226 Difference]: Without dead ends: 5024 [2023-12-22 02:39:45,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:39:45,237 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 11 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:45,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1056 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:39:45,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5024 states. [2023-12-22 02:39:45,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5024 to 5008. [2023-12-22 02:39:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5008 states, 3893 states have (on average 1.325969689185718) internal successors, (5162), 4027 states have internal predecessors, (5162), 560 states have call successors, (560), 366 states have call predecessors, (560), 553 states have return successors, (974), 623 states have call predecessors, (974), 556 states have call successors, (974) [2023-12-22 02:39:45,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5008 states to 5008 states and 6696 transitions. [2023-12-22 02:39:45,575 INFO L78 Accepts]: Start accepts. Automaton has 5008 states and 6696 transitions. Word has length 82 [2023-12-22 02:39:45,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:45,576 INFO L495 AbstractCegarLoop]: Abstraction has 5008 states and 6696 transitions. [2023-12-22 02:39:45,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 5008 states and 6696 transitions. [2023-12-22 02:39:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:45,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:45,579 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] [2023-12-22 02:39:45,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:45,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:45,783 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:45,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:45,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1384264258, now seen corresponding path program 1 times [2023-12-22 02:39:45,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:45,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074883105] [2023-12-22 02:39:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:45,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:45,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:45,786 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:45,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-22 02:39:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:45,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:39:45,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:45,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:45,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:45,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074883105] [2023-12-22 02:39:45,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074883105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:45,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:45,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:45,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698947353] [2023-12-22 02:39:45,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:45,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:39:45,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:45,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:39:45,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:39:45,864 INFO L87 Difference]: Start difference. First operand 5008 states and 6696 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:46,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:46,255 INFO L93 Difference]: Finished difference Result 5647 states and 7540 transitions. [2023-12-22 02:39:46,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:39:46,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (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 82 [2023-12-22 02:39:46,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:46,267 INFO L225 Difference]: With dead ends: 5647 [2023-12-22 02:39:46,267 INFO L226 Difference]: Without dead ends: 5016 [2023-12-22 02:39:46,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:39:46,269 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 2 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:46,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1057 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:39:46,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5016 states. [2023-12-22 02:39:46,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5016 to 5012. [2023-12-22 02:39:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5012 states, 3897 states have (on average 1.323582242750834) internal successors, (5158), 4031 states have internal predecessors, (5158), 560 states have call successors, (560), 366 states have call predecessors, (560), 553 states have return successors, (974), 623 states have call predecessors, (974), 556 states have call successors, (974) [2023-12-22 02:39:46,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 6692 transitions. [2023-12-22 02:39:46,647 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 6692 transitions. Word has length 82 [2023-12-22 02:39:46,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:46,647 INFO L495 AbstractCegarLoop]: Abstraction has 5012 states and 6692 transitions. [2023-12-22 02:39:46,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:46,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 6692 transitions. [2023-12-22 02:39:46,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:46,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:46,651 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] [2023-12-22 02:39:46,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-12-22 02:39:46,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:46,855 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:46,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:46,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1659023872, now seen corresponding path program 1 times [2023-12-22 02:39:46,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:46,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374738494] [2023-12-22 02:39:46,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:46,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:46,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:46,876 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:46,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-22 02:39:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:46,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:39:46,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:47,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:47,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:47,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374738494] [2023-12-22 02:39:47,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374738494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:47,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:47,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:47,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51096587] [2023-12-22 02:39:47,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:47,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:39:47,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:47,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:39:47,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:39:47,045 INFO L87 Difference]: Start difference. First operand 5012 states and 6692 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:47,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:47,718 INFO L93 Difference]: Finished difference Result 5752 states and 7641 transitions. [2023-12-22 02:39:47,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:39:47,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-22 02:39:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:47,729 INFO L225 Difference]: With dead ends: 5752 [2023-12-22 02:39:47,729 INFO L226 Difference]: Without dead ends: 5116 [2023-12-22 02:39:47,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:39:47,732 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 499 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:47,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 538 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:39:47,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2023-12-22 02:39:48,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 5060. [2023-12-22 02:39:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5060 states, 3943 states have (on average 1.3165102713669794) internal successors, (5191), 4077 states have internal predecessors, (5191), 560 states have call successors, (560), 368 states have call predecessors, (560), 555 states have return successors, (974), 623 states have call predecessors, (974), 556 states have call successors, (974) [2023-12-22 02:39:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5060 states to 5060 states and 6725 transitions. [2023-12-22 02:39:48,073 INFO L78 Accepts]: Start accepts. Automaton has 5060 states and 6725 transitions. Word has length 82 [2023-12-22 02:39:48,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:48,073 INFO L495 AbstractCegarLoop]: Abstraction has 5060 states and 6725 transitions. [2023-12-22 02:39:48,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:39:48,074 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states and 6725 transitions. [2023-12-22 02:39:48,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-22 02:39:48,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:48,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:48,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-12-22 02:39:48,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:48,281 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:48,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:48,281 INFO L85 PathProgramCache]: Analyzing trace with hash -146414462, now seen corresponding path program 1 times [2023-12-22 02:39:48,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:48,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515694715] [2023-12-22 02:39:48,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:48,282 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 [2023-12-22 02:39:48,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:48,283 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:48,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-22 02:39:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:48,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:39:48,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:39:48,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:48,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:48,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515694715] [2023-12-22 02:39:48,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515694715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:48,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:48,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:39:48,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786751337] [2023-12-22 02:39:48,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:48,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:39:48,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:48,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:39:48,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:48,471 INFO L87 Difference]: Start difference. First operand 5060 states and 6725 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-22 02:39:48,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:48,897 INFO L93 Difference]: Finished difference Result 6389 states and 8372 transitions. [2023-12-22 02:39:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:39:48,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 82 [2023-12-22 02:39:48,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:48,913 INFO L225 Difference]: With dead ends: 6389 [2023-12-22 02:39:48,913 INFO L226 Difference]: Without dead ends: 5706 [2023-12-22 02:39:48,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:48,916 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 281 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:48,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 577 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:39:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5706 states. [2023-12-22 02:39:49,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5706 to 5704. [2023-12-22 02:39:49,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 4521 states have (on average 1.3023667330236672) internal successors, (5888), 4658 states have internal predecessors, (5888), 595 states have call successors, (595), 398 states have call predecessors, (595), 586 states have return successors, (1010), 656 states have call predecessors, (1010), 591 states have call successors, (1010) [2023-12-22 02:39:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 7493 transitions. [2023-12-22 02:39:49,320 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 7493 transitions. Word has length 82 [2023-12-22 02:39:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:49,321 INFO L495 AbstractCegarLoop]: Abstraction has 5704 states and 7493 transitions. [2023-12-22 02:39:49,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-22 02:39:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 7493 transitions. [2023-12-22 02:39:49,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-22 02:39:49,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:49,329 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:49,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-12-22 02:39:49,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:49,532 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:49,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:49,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1010769804, now seen corresponding path program 1 times [2023-12-22 02:39:49,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:49,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207976024] [2023-12-22 02:39:49,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:49,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:49,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:49,535 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:49,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-22 02:39:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:49,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:39:49,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-22 02:39:49,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:49,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207976024] [2023-12-22 02:39:49,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207976024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:49,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:49,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 02:39:49,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419063339] [2023-12-22 02:39:49,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:49,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:39:49,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:49,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:39:49,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:39:49,641 INFO L87 Difference]: Start difference. First operand 5704 states and 7493 transitions. Second operand has 6 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-22 02:39:50,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:50,104 INFO L93 Difference]: Finished difference Result 10060 states and 13447 transitions. [2023-12-22 02:39:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:39:50,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2023-12-22 02:39:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:50,116 INFO L225 Difference]: With dead ends: 10060 [2023-12-22 02:39:50,116 INFO L226 Difference]: Without dead ends: 5744 [2023-12-22 02:39:50,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-22 02:39:50,125 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 32 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:50,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1756 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:39:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2023-12-22 02:39:50,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 5258. [2023-12-22 02:39:50,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5258 states, 4243 states have (on average 1.290596276219656) internal successors, (5476), 4319 states have internal predecessors, (5476), 499 states have call successors, (499), 347 states have call predecessors, (499), 514 states have return successors, (867), 600 states have call predecessors, (867), 495 states have call successors, (867) [2023-12-22 02:39:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 6842 transitions. [2023-12-22 02:39:50,491 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 6842 transitions. Word has length 138 [2023-12-22 02:39:50,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:50,492 INFO L495 AbstractCegarLoop]: Abstraction has 5258 states and 6842 transitions. [2023-12-22 02:39:50,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-22 02:39:50,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 6842 transitions. [2023-12-22 02:39:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-22 02:39:50,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:50,499 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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] [2023-12-22 02:39:50,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-22 02:39:50,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:50,703 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:50,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:50,703 INFO L85 PathProgramCache]: Analyzing trace with hash -288026479, now seen corresponding path program 1 times [2023-12-22 02:39:50,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:50,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191187716] [2023-12-22 02:39:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:50,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:50,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:50,705 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:50,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-22 02:39:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:50,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:39:50,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-22 02:39:50,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:50,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:50,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191187716] [2023-12-22 02:39:50,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191187716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:50,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:50,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:39:50,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843915836] [2023-12-22 02:39:50,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:50,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:39:50,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:50,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:39:50,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:50,805 INFO L87 Difference]: Start difference. First operand 5258 states and 6842 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-22 02:39:51,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:51,155 INFO L93 Difference]: Finished difference Result 7565 states and 9905 transitions. [2023-12-22 02:39:51,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:39:51,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 139 [2023-12-22 02:39:51,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:51,176 INFO L225 Difference]: With dead ends: 7565 [2023-12-22 02:39:51,176 INFO L226 Difference]: Without dead ends: 3735 [2023-12-22 02:39:51,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:51,182 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 138 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:51,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 567 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:39:51,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2023-12-22 02:39:51,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3735. [2023-12-22 02:39:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3735 states, 3062 states have (on average 1.2821685173089483) internal successors, (3926), 3112 states have internal predecessors, (3926), 323 states have call successors, (323), 235 states have call predecessors, (323), 348 states have return successors, (547), 388 states have call predecessors, (547), 319 states have call successors, (547) [2023-12-22 02:39:51,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 4796 transitions. [2023-12-22 02:39:51,444 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 4796 transitions. Word has length 139 [2023-12-22 02:39:51,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:51,444 INFO L495 AbstractCegarLoop]: Abstraction has 3735 states and 4796 transitions. [2023-12-22 02:39:51,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-22 02:39:51,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 4796 transitions. [2023-12-22 02:39:51,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-22 02:39:51,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:51,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:51,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:51,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:51,654 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:51,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:51,654 INFO L85 PathProgramCache]: Analyzing trace with hash 913104573, now seen corresponding path program 1 times [2023-12-22 02:39:51,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:51,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396880780] [2023-12-22 02:39:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:51,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:51,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:51,656 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:51,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-22 02:39:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:51,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:39:51,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-22 02:39:51,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:51,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:51,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396880780] [2023-12-22 02:39:51,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396880780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:51,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:51,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:39:51,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053200782] [2023-12-22 02:39:51,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:51,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:39:51,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:51,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:39:51,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:51,828 INFO L87 Difference]: Start difference. First operand 3735 states and 4796 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:39:52,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:52,131 INFO L93 Difference]: Finished difference Result 6198 states and 7819 transitions. [2023-12-22 02:39:52,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:39:52,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 132 [2023-12-22 02:39:52,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:52,141 INFO L225 Difference]: With dead ends: 6198 [2023-12-22 02:39:52,141 INFO L226 Difference]: Without dead ends: 4871 [2023-12-22 02:39:52,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:52,144 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 286 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:52,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 578 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:39:52,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2023-12-22 02:39:52,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4863. [2023-12-22 02:39:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 4074 states have (on average 1.26313205694649) internal successors, (5146), 4128 states have internal predecessors, (5146), 385 states have call successors, (385), 287 states have call predecessors, (385), 402 states have return successors, (611), 448 states have call predecessors, (611), 381 states have call successors, (611) [2023-12-22 02:39:52,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 6142 transitions. [2023-12-22 02:39:52,452 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 6142 transitions. Word has length 132 [2023-12-22 02:39:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:52,453 INFO L495 AbstractCegarLoop]: Abstraction has 4863 states and 6142 transitions. [2023-12-22 02:39:52,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:39:52,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 6142 transitions. [2023-12-22 02:39:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-22 02:39:52,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:52,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:52,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:52,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:52,661 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:52,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:52,661 INFO L85 PathProgramCache]: Analyzing trace with hash 287773372, now seen corresponding path program 1 times [2023-12-22 02:39:52,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:52,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746078238] [2023-12-22 02:39:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:52,662 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 [2023-12-22 02:39:52,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:52,663 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:52,665 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 (30)] Waiting until timeout for monitored process [2023-12-22 02:39:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:52,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:39:52,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-22 02:39:52,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:52,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:52,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746078238] [2023-12-22 02:39:52,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746078238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:52,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:52,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:52,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947575539] [2023-12-22 02:39:52,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:52,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:39:52,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:52,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:39:52,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:39:52,894 INFO L87 Difference]: Start difference. First operand 4863 states and 6142 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:39:53,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:53,558 INFO L93 Difference]: Finished difference Result 9656 states and 11928 transitions. [2023-12-22 02:39:53,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:39:53,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 132 [2023-12-22 02:39:53,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:53,568 INFO L225 Difference]: With dead ends: 9656 [2023-12-22 02:39:53,568 INFO L226 Difference]: Without dead ends: 7202 [2023-12-22 02:39:53,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:39:53,571 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 453 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:53,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 713 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:39:53,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7202 states. [2023-12-22 02:39:54,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7202 to 7198. [2023-12-22 02:39:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7198 states, 6166 states have (on average 1.2403503081414207) internal successors, (7648), 6233 states have internal predecessors, (7648), 512 states have call successors, (512), 391 states have call predecessors, (512), 518 states have return successors, (774), 575 states have call predecessors, (774), 508 states have call successors, (774) [2023-12-22 02:39:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7198 states to 7198 states and 8934 transitions. [2023-12-22 02:39:54,023 INFO L78 Accepts]: Start accepts. Automaton has 7198 states and 8934 transitions. Word has length 132 [2023-12-22 02:39:54,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:54,023 INFO L495 AbstractCegarLoop]: Abstraction has 7198 states and 8934 transitions. [2023-12-22 02:39:54,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:39:54,024 INFO L276 IsEmpty]: Start isEmpty. Operand 7198 states and 8934 transitions. [2023-12-22 02:39:54,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-22 02:39:54,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:54,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:54,033 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 (30)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:54,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:54,232 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:54,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:54,232 INFO L85 PathProgramCache]: Analyzing trace with hash -418823234, now seen corresponding path program 1 times [2023-12-22 02:39:54,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:54,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150605223] [2023-12-22 02:39:54,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:54,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:54,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:54,234 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:54,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-22 02:39:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:54,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:39:54,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-22 02:39:54,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:54,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:54,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150605223] [2023-12-22 02:39:54,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150605223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:54,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:54,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:39:54,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116730526] [2023-12-22 02:39:54,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:54,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:39:54,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:54,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:39:54,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:54,339 INFO L87 Difference]: Start difference. First operand 7198 states and 8934 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:39:54,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:54,715 INFO L93 Difference]: Finished difference Result 10864 states and 13323 transitions. [2023-12-22 02:39:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:39:54,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 132 [2023-12-22 02:39:54,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:54,727 INFO L225 Difference]: With dead ends: 10864 [2023-12-22 02:39:54,727 INFO L226 Difference]: Without dead ends: 6075 [2023-12-22 02:39:54,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:54,734 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 229 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:54,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 483 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:39:54,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2023-12-22 02:39:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 6075. [2023-12-22 02:39:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6075 states, 5162 states have (on average 1.2469972878729174) internal successors, (6437), 5224 states have internal predecessors, (6437), 447 states have call successors, (447), 339 states have call predecessors, (447), 464 states have return successors, (695), 512 states have call predecessors, (695), 443 states have call successors, (695) [2023-12-22 02:39:55,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6075 states to 6075 states and 7579 transitions. [2023-12-22 02:39:55,113 INFO L78 Accepts]: Start accepts. Automaton has 6075 states and 7579 transitions. Word has length 132 [2023-12-22 02:39:55,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:55,113 INFO L495 AbstractCegarLoop]: Abstraction has 6075 states and 7579 transitions. [2023-12-22 02:39:55,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:39:55,113 INFO L276 IsEmpty]: Start isEmpty. Operand 6075 states and 7579 transitions. [2023-12-22 02:39:55,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-22 02:39:55,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:55,118 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:55,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:55,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:55,323 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:55,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:55,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1505669983, now seen corresponding path program 1 times [2023-12-22 02:39:55,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:55,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837122361] [2023-12-22 02:39:55,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:55,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:55,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:55,325 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:55,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-22 02:39:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:55,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:39:55,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-22 02:39:55,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:55,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837122361] [2023-12-22 02:39:55,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837122361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:55,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:55,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:39:55,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627111075] [2023-12-22 02:39:55,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:55,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:39:55,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:55,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:39:55,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:55,501 INFO L87 Difference]: Start difference. First operand 6075 states and 7579 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-22 02:39:56,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:56,008 INFO L93 Difference]: Finished difference Result 9775 states and 12640 transitions. [2023-12-22 02:39:56,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:39:56,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2023-12-22 02:39:56,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:56,026 INFO L225 Difference]: With dead ends: 9775 [2023-12-22 02:39:56,026 INFO L226 Difference]: Without dead ends: 7668 [2023-12-22 02:39:56,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:56,035 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 64 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:56,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 695 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:39:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7668 states. [2023-12-22 02:39:56,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7668 to 7640. [2023-12-22 02:39:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7640 states, 6389 states have (on average 1.2638910627641258) internal successors, (8075), 6487 states have internal predecessors, (8075), 603 states have call successors, (603), 447 states have call predecessors, (603), 646 states have return successors, (1004), 706 states have call predecessors, (1004), 599 states have call successors, (1004) [2023-12-22 02:39:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7640 states to 7640 states and 9682 transitions. [2023-12-22 02:39:56,586 INFO L78 Accepts]: Start accepts. Automaton has 7640 states and 9682 transitions. Word has length 141 [2023-12-22 02:39:56,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:56,586 INFO L495 AbstractCegarLoop]: Abstraction has 7640 states and 9682 transitions. [2023-12-22 02:39:56,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-22 02:39:56,586 INFO L276 IsEmpty]: Start isEmpty. Operand 7640 states and 9682 transitions. [2023-12-22 02:39:56,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 02:39:56,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:56,592 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:56,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:56,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:56,796 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:56,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:56,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1359532168, now seen corresponding path program 1 times [2023-12-22 02:39:56,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:56,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820704181] [2023-12-22 02:39:56,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:56,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:56,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:56,799 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:56,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-22 02:39:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:56,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:39:56,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-22 02:39:56,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:56,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:56,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820704181] [2023-12-22 02:39:56,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820704181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:56,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:56,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:39:56,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526889645] [2023-12-22 02:39:56,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:56,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:39:56,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:56,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:39:56,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:56,932 INFO L87 Difference]: Start difference. First operand 7640 states and 9682 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-22 02:39:57,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:39:57,709 INFO L93 Difference]: Finished difference Result 14556 states and 19423 transitions. [2023-12-22 02:39:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:39:57,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 142 [2023-12-22 02:39:57,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:39:57,732 INFO L225 Difference]: With dead ends: 14556 [2023-12-22 02:39:57,733 INFO L226 Difference]: Without dead ends: 10884 [2023-12-22 02:39:57,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:39:57,743 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 94 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:39:57,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 733 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:39:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10884 states. [2023-12-22 02:39:58,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10884 to 10832. [2023-12-22 02:39:58,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10832 states, 8881 states have (on average 1.269339038396577) internal successors, (11273), 9029 states have internal predecessors, (11273), 939 states have call successors, (939), 681 states have call predecessors, (939), 1010 states have return successors, (1802), 1122 states have call predecessors, (1802), 935 states have call successors, (1802) [2023-12-22 02:39:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10832 states to 10832 states and 14014 transitions. [2023-12-22 02:39:58,576 INFO L78 Accepts]: Start accepts. Automaton has 10832 states and 14014 transitions. Word has length 142 [2023-12-22 02:39:58,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:39:58,576 INFO L495 AbstractCegarLoop]: Abstraction has 10832 states and 14014 transitions. [2023-12-22 02:39:58,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-22 02:39:58,576 INFO L276 IsEmpty]: Start isEmpty. Operand 10832 states and 14014 transitions. [2023-12-22 02:39:58,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-22 02:39:58,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:39:58,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:39:58,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-22 02:39:58,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:58,789 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:39:58,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:39:58,790 INFO L85 PathProgramCache]: Analyzing trace with hash -482873961, now seen corresponding path program 1 times [2023-12-22 02:39:58,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:39:58,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482409588] [2023-12-22 02:39:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:39:58,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:39:58,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:39:58,793 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:39:58,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-22 02:39:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:39:58,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:39:58,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:39:59,043 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-22 02:39:59,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:39:59,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:39:59,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482409588] [2023-12-22 02:39:59,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482409588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:39:59,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:39:59,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:39:59,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438150588] [2023-12-22 02:39:59,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:39:59,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:39:59,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:39:59,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:39:59,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:39:59,045 INFO L87 Difference]: Start difference. First operand 10832 states and 14014 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:40:00,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:40:00,266 INFO L93 Difference]: Finished difference Result 17708 states and 22254 transitions. [2023-12-22 02:40:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:40:00,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 134 [2023-12-22 02:40:00,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:40:00,297 INFO L225 Difference]: With dead ends: 17708 [2023-12-22 02:40:00,298 INFO L226 Difference]: Without dead ends: 14042 [2023-12-22 02:40:00,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:40:00,307 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 444 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:40:00,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 692 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:40:00,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14042 states. [2023-12-22 02:40:01,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14042 to 14038. [2023-12-22 02:40:01,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14038 states, 11752 states have (on average 1.250936010891763) internal successors, (14701), 11921 states have internal predecessors, (14701), 1112 states have call successors, (1112), 821 states have call predecessors, (1112), 1172 states have return successors, (2021), 1297 states have call predecessors, (2021), 1108 states have call successors, (2021) [2023-12-22 02:40:01,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14038 states to 14038 states and 17834 transitions. [2023-12-22 02:40:01,424 INFO L78 Accepts]: Start accepts. Automaton has 14038 states and 17834 transitions. Word has length 134 [2023-12-22 02:40:01,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:40:01,425 INFO L495 AbstractCegarLoop]: Abstraction has 14038 states and 17834 transitions. [2023-12-22 02:40:01,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:40:01,425 INFO L276 IsEmpty]: Start isEmpty. Operand 14038 states and 17834 transitions. [2023-12-22 02:40:01,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-22 02:40:01,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:40:01,434 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:40:01,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-22 02:40:01,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:01,639 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:40:01,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:40:01,639 INFO L85 PathProgramCache]: Analyzing trace with hash -912532267, now seen corresponding path program 1 times [2023-12-22 02:40:01,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:40:01,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044383714] [2023-12-22 02:40:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:40:01,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:01,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:40:01,641 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:40:01,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-22 02:40:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:40:01,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:40:01,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:40:01,740 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-22 02:40:01,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:40:01,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:40:01,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044383714] [2023-12-22 02:40:01,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044383714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:40:01,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:40:01,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:40:01,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428374431] [2023-12-22 02:40:01,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:40:01,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:40:01,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:40:01,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:40:01,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:40:01,742 INFO L87 Difference]: Start difference. First operand 14038 states and 17834 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:40:02,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:40:02,660 INFO L93 Difference]: Finished difference Result 20904 states and 26033 transitions. [2023-12-22 02:40:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:40:02,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 134 [2023-12-22 02:40:02,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:40:02,692 INFO L225 Difference]: With dead ends: 20904 [2023-12-22 02:40:02,692 INFO L226 Difference]: Without dead ends: 14032 [2023-12-22 02:40:02,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:40:02,705 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 227 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:40:02,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 482 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:40:02,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14032 states. [2023-12-22 02:40:03,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14032 to 14032. [2023-12-22 02:40:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14032 states, 11749 states have (on average 1.2508298578602435) internal successors, (14696), 11917 states have internal predecessors, (14696), 1109 states have call successors, (1109), 821 states have call predecessors, (1109), 1172 states have return successors, (2018), 1294 states have call predecessors, (2018), 1105 states have call successors, (2018) [2023-12-22 02:40:03,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14032 states to 14032 states and 17823 transitions. [2023-12-22 02:40:03,754 INFO L78 Accepts]: Start accepts. Automaton has 14032 states and 17823 transitions. Word has length 134 [2023-12-22 02:40:03,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:40:03,754 INFO L495 AbstractCegarLoop]: Abstraction has 14032 states and 17823 transitions. [2023-12-22 02:40:03,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:40:03,754 INFO L276 IsEmpty]: Start isEmpty. Operand 14032 states and 17823 transitions. [2023-12-22 02:40:03,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-22 02:40:03,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:40:03,764 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:40:03,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-12-22 02:40:03,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:03,968 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:40:03,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:40:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash 145313029, now seen corresponding path program 1 times [2023-12-22 02:40:03,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:40:03,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4573981] [2023-12-22 02:40:03,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:40:03,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:03,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:40:03,972 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:40:03,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-22 02:40:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:40:04,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:40:04,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:40:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-22 02:40:04,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:40:04,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:40:04,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4573981] [2023-12-22 02:40:04,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4573981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:40:04,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:40:04,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:40:04,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053912657] [2023-12-22 02:40:04,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:40:04,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:40:04,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:40:04,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:40:04,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:40:04,186 INFO L87 Difference]: Start difference. First operand 14032 states and 17823 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-22 02:40:05,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:40:05,821 INFO L93 Difference]: Finished difference Result 27644 states and 36480 transitions. [2023-12-22 02:40:05,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:40:05,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2023-12-22 02:40:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:40:05,877 INFO L225 Difference]: With dead ends: 27644 [2023-12-22 02:40:05,877 INFO L226 Difference]: Without dead ends: 20780 [2023-12-22 02:40:05,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:40:05,894 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 68 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:40:05,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 698 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:40:05,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20780 states. [2023-12-22 02:40:07,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20780 to 20776. [2023-12-22 02:40:07,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20776 states, 17016 states have (on average 1.2611659614480488) internal successors, (21460), 17313 states have internal predecessors, (21460), 1817 states have call successors, (1817), 1307 states have call predecessors, (1817), 1941 states have return successors, (3492), 2156 states have call predecessors, (3492), 1813 states have call successors, (3492) [2023-12-22 02:40:07,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20776 states to 20776 states and 26769 transitions. [2023-12-22 02:40:07,645 INFO L78 Accepts]: Start accepts. Automaton has 20776 states and 26769 transitions. Word has length 143 [2023-12-22 02:40:07,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:40:07,646 INFO L495 AbstractCegarLoop]: Abstraction has 20776 states and 26769 transitions. [2023-12-22 02:40:07,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-22 02:40:07,646 INFO L276 IsEmpty]: Start isEmpty. Operand 20776 states and 26769 transitions. [2023-12-22 02:40:07,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-22 02:40:07,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:40:07,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:40:07,663 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 [2023-12-22 02:40:07,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:07,863 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:40:07,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:40:07,864 INFO L85 PathProgramCache]: Analyzing trace with hash 67074812, now seen corresponding path program 1 times [2023-12-22 02:40:07,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:40:07,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088233111] [2023-12-22 02:40:07,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:40:07,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:07,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:40:07,867 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:40:07,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-22 02:40:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:40:07,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:40:07,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:40:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-22 02:40:08,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:40:08,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:40:08,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088233111] [2023-12-22 02:40:08,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088233111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:40:08,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:40:08,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:40:08,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529220342] [2023-12-22 02:40:08,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:40:08,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:40:08,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:40:08,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:40:08,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:40:08,067 INFO L87 Difference]: Start difference. First operand 20776 states and 26769 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:40:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:40:10,316 INFO L93 Difference]: Finished difference Result 33593 states and 42067 transitions. [2023-12-22 02:40:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:40:10,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 136 [2023-12-22 02:40:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:40:10,380 INFO L225 Difference]: With dead ends: 33593 [2023-12-22 02:40:10,380 INFO L226 Difference]: Without dead ends: 26727 [2023-12-22 02:40:10,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:40:10,397 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 441 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:40:10,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 654 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:40:10,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26727 states. [2023-12-22 02:40:12,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26727 to 26723. [2023-12-22 02:40:12,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26723 states, 22328 states have (on average 1.2437298459333572) internal successors, (27770), 22674 states have internal predecessors, (27770), 2136 states have call successors, (2136), 1563 states have call predecessors, (2136), 2257 states have return successors, (3919), 2487 states have call predecessors, (3919), 2132 states have call successors, (3919) [2023-12-22 02:40:12,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26723 states to 26723 states and 33825 transitions. [2023-12-22 02:40:12,702 INFO L78 Accepts]: Start accepts. Automaton has 26723 states and 33825 transitions. Word has length 136 [2023-12-22 02:40:12,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:40:12,702 INFO L495 AbstractCegarLoop]: Abstraction has 26723 states and 33825 transitions. [2023-12-22 02:40:12,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:40:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 26723 states and 33825 transitions. [2023-12-22 02:40:12,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-22 02:40:12,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:40:12,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:40:12,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-22 02:40:12,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:12,922 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:40:12,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:40:12,923 INFO L85 PathProgramCache]: Analyzing trace with hash -367430786, now seen corresponding path program 1 times [2023-12-22 02:40:12,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:40:12,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778720443] [2023-12-22 02:40:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:40:12,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:12,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:40:12,925 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:40:12,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-22 02:40:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:40:13,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:40:13,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:40:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-22 02:40:13,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:40:13,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:40:13,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778720443] [2023-12-22 02:40:13,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778720443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:40:13,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:40:13,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:40:13,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551279952] [2023-12-22 02:40:13,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:40:13,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:40:13,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:40:13,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:40:13,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:40:13,041 INFO L87 Difference]: Start difference. First operand 26723 states and 33825 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:40:15,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:40:15,037 INFO L93 Difference]: Finished difference Result 39531 states and 49072 transitions. [2023-12-22 02:40:15,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:40:15,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 136 [2023-12-22 02:40:15,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:40:15,097 INFO L225 Difference]: With dead ends: 39531 [2023-12-22 02:40:15,097 INFO L226 Difference]: Without dead ends: 26718 [2023-12-22 02:40:15,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:40:15,115 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 225 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:40:15,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 481 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:40:15,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26718 states. [2023-12-22 02:40:17,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26718 to 26718. [2023-12-22 02:40:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26718 states, 22326 states have (on average 1.2437068888291678) internal successors, (27767), 22671 states have internal predecessors, (27767), 2133 states have call successors, (2133), 1563 states have call predecessors, (2133), 2257 states have return successors, (3916), 2484 states have call predecessors, (3916), 2129 states have call successors, (3916) [2023-12-22 02:40:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26718 states to 26718 states and 33816 transitions. [2023-12-22 02:40:17,509 INFO L78 Accepts]: Start accepts. Automaton has 26718 states and 33816 transitions. Word has length 136 [2023-12-22 02:40:17,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:40:17,510 INFO L495 AbstractCegarLoop]: Abstraction has 26718 states and 33816 transitions. [2023-12-22 02:40:17,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:40:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 26718 states and 33816 transitions. [2023-12-22 02:40:17,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-22 02:40:17,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:40:17,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:40:17,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-22 02:40:17,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:17,730 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:40:17,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:40:17,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1575127913, now seen corresponding path program 1 times [2023-12-22 02:40:17,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:40:17,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145656796] [2023-12-22 02:40:17,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:40:17,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:17,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:40:17,732 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:40:17,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-22 02:40:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:40:17,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:40:17,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:40:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-22 02:40:17,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:40:17,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:40:17,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145656796] [2023-12-22 02:40:17,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145656796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:40:17,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:40:17,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:40:17,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154320046] [2023-12-22 02:40:17,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:40:17,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:40:17,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:40:17,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:40:17,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:40:17,950 INFO L87 Difference]: Start difference. First operand 26718 states and 33816 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:40:20,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:40:20,689 INFO L93 Difference]: Finished difference Result 50406 states and 62014 transitions. [2023-12-22 02:40:20,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:40:20,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 138 [2023-12-22 02:40:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:40:20,764 INFO L225 Difference]: With dead ends: 50406 [2023-12-22 02:40:20,765 INFO L226 Difference]: Without dead ends: 37598 [2023-12-22 02:40:20,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:40:20,797 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 448 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:40:20,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 515 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:40:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37598 states. [2023-12-22 02:40:23,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37598 to 37594. [2023-12-22 02:40:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37594 states, 32010 states have (on average 1.2259606373008436) internal successors, (39243), 32463 states have internal predecessors, (39243), 2717 states have call successors, (2717), 2027 states have call predecessors, (2717), 2865 states have return successors, (4740), 3104 states have call predecessors, (4740), 2713 states have call successors, (4740) [2023-12-22 02:40:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37594 states to 37594 states and 46700 transitions. [2023-12-22 02:40:23,697 INFO L78 Accepts]: Start accepts. Automaton has 37594 states and 46700 transitions. Word has length 138 [2023-12-22 02:40:23,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:40:23,698 INFO L495 AbstractCegarLoop]: Abstraction has 37594 states and 46700 transitions. [2023-12-22 02:40:23,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:40:23,698 INFO L276 IsEmpty]: Start isEmpty. Operand 37594 states and 46700 transitions. [2023-12-22 02:40:23,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-22 02:40:23,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:40:23,716 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:40:23,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-12-22 02:40:23,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:23,921 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:40:23,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:40:23,922 INFO L85 PathProgramCache]: Analyzing trace with hash -607229863, now seen corresponding path program 1 times [2023-12-22 02:40:23,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:40:23,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588535191] [2023-12-22 02:40:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:40:23,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:23,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:40:23,923 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:40:23,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-22 02:40:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:40:24,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:40:24,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:40:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-22 02:40:24,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:40:24,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:40:24,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588535191] [2023-12-22 02:40:24,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588535191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:40:24,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:40:24,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:40:24,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17951727] [2023-12-22 02:40:24,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:40:24,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:40:24,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:40:24,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:40:24,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:40:24,046 INFO L87 Difference]: Start difference. First operand 37594 states and 46700 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-22 02:40:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:40:28,974 INFO L93 Difference]: Finished difference Result 64241 states and 82448 transitions. [2023-12-22 02:40:28,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:40:28,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 147 [2023-12-22 02:40:28,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:40:29,100 INFO L225 Difference]: With dead ends: 64241 [2023-12-22 02:40:29,100 INFO L226 Difference]: Without dead ends: 50346 [2023-12-22 02:40:29,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-22 02:40:29,133 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 518 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:40:29,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 555 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:40:29,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50346 states. [2023-12-22 02:40:33,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50346 to 50298. [2023-12-22 02:40:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50298 states, 41808 states have (on average 1.237227324913892) internal successors, (51726), 42484 states have internal predecessors, (51726), 4112 states have call successors, (4112), 2978 states have call predecessors, (4112), 4376 states have return successors, (7534), 4836 states have call predecessors, (7534), 4108 states have call successors, (7534) [2023-12-22 02:40:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50298 states to 50298 states and 63372 transitions. [2023-12-22 02:40:33,903 INFO L78 Accepts]: Start accepts. Automaton has 50298 states and 63372 transitions. Word has length 147 [2023-12-22 02:40:33,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:40:33,903 INFO L495 AbstractCegarLoop]: Abstraction has 50298 states and 63372 transitions. [2023-12-22 02:40:33,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-22 02:40:33,903 INFO L276 IsEmpty]: Start isEmpty. Operand 50298 states and 63372 transitions. [2023-12-22 02:40:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-22 02:40:33,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:40:33,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:40:33,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-22 02:40:34,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:34,124 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:40:34,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:40:34,124 INFO L85 PathProgramCache]: Analyzing trace with hash -768066756, now seen corresponding path program 1 times [2023-12-22 02:40:34,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:40:34,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433687294] [2023-12-22 02:40:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:40:34,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:34,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:40:34,126 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:40:34,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-22 02:40:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:40:34,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:40:34,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:40:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-22 02:40:34,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:40:34,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:40:34,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433687294] [2023-12-22 02:40:34,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433687294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:40:34,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:40:34,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:40:34,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45117711] [2023-12-22 02:40:34,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:40:34,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:40:34,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:40:34,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:40:34,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:40:34,240 INFO L87 Difference]: Start difference. First operand 50298 states and 63372 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:40:39,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:40:39,542 INFO L93 Difference]: Finished difference Result 92694 states and 113898 transitions. [2023-12-22 02:40:39,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:40:39,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 140 [2023-12-22 02:40:39,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:40:39,707 INFO L225 Difference]: With dead ends: 92694 [2023-12-22 02:40:39,707 INFO L226 Difference]: Without dead ends: 59766 [2023-12-22 02:40:39,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:40:39,755 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 176 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:40:39,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 859 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:40:39,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59766 states. [2023-12-22 02:40:44,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59766 to 59766. [2023-12-22 02:40:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59766 states, 50236 states have (on average 1.226431244525838) internal successors, (61611), 50968 states have internal predecessors, (61611), 4648 states have call successors, (4648), 3394 states have call predecessors, (4648), 4880 states have return successors, (8296), 5404 states have call predecessors, (8296), 4644 states have call successors, (8296) [2023-12-22 02:40:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59766 states to 59766 states and 74555 transitions. [2023-12-22 02:40:45,134 INFO L78 Accepts]: Start accepts. Automaton has 59766 states and 74555 transitions. Word has length 140 [2023-12-22 02:40:45,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:40:45,134 INFO L495 AbstractCegarLoop]: Abstraction has 59766 states and 74555 transitions. [2023-12-22 02:40:45,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:40:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 59766 states and 74555 transitions. [2023-12-22 02:40:45,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-22 02:40:45,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:40:45,159 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:40:45,166 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 [2023-12-22 02:40:45,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:45,363 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:40:45,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:40:45,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1504482441, now seen corresponding path program 1 times [2023-12-22 02:40:45,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:40:45,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298144275] [2023-12-22 02:40:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:40:45,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:45,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:40:45,366 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:40:45,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-22 02:40:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:40:45,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:40:45,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:40:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-22 02:40:45,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:40:45,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:40:45,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298144275] [2023-12-22 02:40:45,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298144275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:40:45,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:40:45,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:40:45,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128130441] [2023-12-22 02:40:45,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:40:45,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:40:45,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:40:45,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:40:45,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:40:45,483 INFO L87 Difference]: Start difference. First operand 59766 states and 74555 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-22 02:40:50,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:40:50,061 INFO L93 Difference]: Finished difference Result 86206 states and 109563 transitions. [2023-12-22 02:40:50,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:40:50,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 164 [2023-12-22 02:40:50,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:40:50,219 INFO L225 Difference]: With dead ends: 86206 [2023-12-22 02:40:50,219 INFO L226 Difference]: Without dead ends: 59674 [2023-12-22 02:40:50,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:40:50,261 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 103 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:40:50,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 727 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:40:50,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59674 states. [2023-12-22 02:40:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59674 to 59670. [2023-12-22 02:40:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59670 states, 50140 states have (on average 1.2182489030714) internal successors, (61083), 50920 states have internal predecessors, (61083), 4648 states have call successors, (4648), 3394 states have call predecessors, (4648), 4880 states have return successors, (7720), 5356 states have call predecessors, (7720), 4644 states have call successors, (7720) [2023-12-22 02:40:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59670 states to 59670 states and 73451 transitions. [2023-12-22 02:40:55,343 INFO L78 Accepts]: Start accepts. Automaton has 59670 states and 73451 transitions. Word has length 164 [2023-12-22 02:40:55,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:40:55,343 INFO L495 AbstractCegarLoop]: Abstraction has 59670 states and 73451 transitions. [2023-12-22 02:40:55,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-22 02:40:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand 59670 states and 73451 transitions. [2023-12-22 02:40:55,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-22 02:40:55,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:40:55,355 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:40:55,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-22 02:40:55,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:55,559 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:40:55,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:40:55,560 INFO L85 PathProgramCache]: Analyzing trace with hash 977508011, now seen corresponding path program 1 times [2023-12-22 02:40:55,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:40:55,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159318226] [2023-12-22 02:40:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:40:55,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:40:55,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:40:55,561 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:40:55,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-22 02:40:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:40:55,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:40:55,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:40:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-22 02:40:55,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:40:55,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:40:55,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159318226] [2023-12-22 02:40:55,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159318226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:40:55,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:40:55,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:40:55,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529260994] [2023-12-22 02:40:55,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:40:55,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:40:55,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:40:55,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:40:55,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:40:55,685 INFO L87 Difference]: Start difference. First operand 59670 states and 73451 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-22 02:41:00,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:41:00,354 INFO L93 Difference]: Finished difference Result 77222 states and 97115 transitions. [2023-12-22 02:41:00,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:41:00,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 171 [2023-12-22 02:41:00,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:41:00,488 INFO L225 Difference]: With dead ends: 77222 [2023-12-22 02:41:00,489 INFO L226 Difference]: Without dead ends: 33165 [2023-12-22 02:41:00,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:41:00,526 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 82 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:41:00,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 763 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:41:00,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33165 states. [2023-12-22 02:41:02,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33165 to 33165. [2023-12-22 02:41:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33165 states, 29590 states have (on average 1.1854004731328152) internal successors, (35076), 29840 states have internal predecessors, (35076), 1806 states have call successors, (1806), 1441 states have call predecessors, (1806), 1768 states have return successors, (2450), 1884 states have call predecessors, (2450), 1804 states have call successors, (2450) [2023-12-22 02:41:02,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33165 states to 33165 states and 39332 transitions. [2023-12-22 02:41:02,290 INFO L78 Accepts]: Start accepts. Automaton has 33165 states and 39332 transitions. Word has length 171 [2023-12-22 02:41:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:41:02,291 INFO L495 AbstractCegarLoop]: Abstraction has 33165 states and 39332 transitions. [2023-12-22 02:41:02,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-22 02:41:02,291 INFO L276 IsEmpty]: Start isEmpty. Operand 33165 states and 39332 transitions. [2023-12-22 02:41:02,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-22 02:41:02,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:41:02,302 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:41:02,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2023-12-22 02:41:02,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:41:02,506 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:41:02,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:41:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash 346264204, now seen corresponding path program 1 times [2023-12-22 02:41:02,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:41:02,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795355634] [2023-12-22 02:41:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:41:02,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:41:02,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:41:02,508 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:41:02,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-12-22 02:41:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:41:02,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:41:02,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:41:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-22 02:41:02,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:41:02,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:41:02,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795355634] [2023-12-22 02:41:02,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795355634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:41:02,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:41:02,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:41:02,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410684769] [2023-12-22 02:41:02,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:41:02,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:41:02,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:41:02,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:41:02,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:41:02,737 INFO L87 Difference]: Start difference. First operand 33165 states and 39332 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-22 02:41:04,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:41:04,991 INFO L93 Difference]: Finished difference Result 75750 states and 89998 transitions. [2023-12-22 02:41:04,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:41:04,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 176 [2023-12-22 02:41:04,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:41:05,083 INFO L225 Difference]: With dead ends: 75750 [2023-12-22 02:41:05,084 INFO L226 Difference]: Without dead ends: 42597 [2023-12-22 02:41:05,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:41:05,123 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 101 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:41:05,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 406 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:41:05,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42597 states. [2023-12-22 02:41:07,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42597 to 42525. [2023-12-22 02:41:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42525 states, 37918 states have (on average 1.1762223745978164) internal successors, (44600), 38220 states have internal predecessors, (44600), 2342 states have call successors, (2342), 1857 states have call predecessors, (2342), 2264 states have return successors, (3150), 2448 states have call predecessors, (3150), 2340 states have call successors, (3150) [2023-12-22 02:41:07,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42525 states to 42525 states and 50092 transitions. [2023-12-22 02:41:07,756 INFO L78 Accepts]: Start accepts. Automaton has 42525 states and 50092 transitions. Word has length 176 [2023-12-22 02:41:07,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:41:07,756 INFO L495 AbstractCegarLoop]: Abstraction has 42525 states and 50092 transitions. [2023-12-22 02:41:07,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-22 02:41:07,756 INFO L276 IsEmpty]: Start isEmpty. Operand 42525 states and 50092 transitions. [2023-12-22 02:41:07,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-22 02:41:07,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:41:07,778 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:41:07,782 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 (44)] Forceful destruction successful, exit code 0 [2023-12-22 02:41:07,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:41:07,982 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:41:07,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:41:07,983 INFO L85 PathProgramCache]: Analyzing trace with hash 737939955, now seen corresponding path program 1 times [2023-12-22 02:41:07,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:41:07,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417818823] [2023-12-22 02:41:07,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:41:07,983 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:41:07,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:41:07,985 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:41:07,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-12-22 02:41:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:41:08,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:41:08,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:41:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-22 02:41:08,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:41:08,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:41:08,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417818823] [2023-12-22 02:41:08,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417818823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:41:08,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:41:08,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:41:08,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881560504] [2023-12-22 02:41:08,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:41:08,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:41:08,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:41:08,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:41:08,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:41:08,209 INFO L87 Difference]: Start difference. First operand 42525 states and 50092 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-22 02:41:10,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:41:10,786 INFO L93 Difference]: Finished difference Result 85511 states and 100967 transitions. [2023-12-22 02:41:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:41:10,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 200 [2023-12-22 02:41:10,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:41:10,875 INFO L225 Difference]: With dead ends: 85511 [2023-12-22 02:41:10,875 INFO L226 Difference]: Without dead ends: 42999 [2023-12-22 02:41:11,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:41:11,040 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 266 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:41:11,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 423 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:41:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42999 states. [2023-12-22 02:41:13,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42999 to 42999. [2023-12-22 02:41:13,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42999 states, 38344 states have (on average 1.1683705403713749) internal successors, (44800), 38670 states have internal predecessors, (44800), 2342 states have call successors, (2342), 1857 states have call predecessors, (2342), 2312 states have return successors, (2928), 2472 states have call predecessors, (2928), 2340 states have call successors, (2928) [2023-12-22 02:41:13,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42999 states to 42999 states and 50070 transitions. [2023-12-22 02:41:13,490 INFO L78 Accepts]: Start accepts. Automaton has 42999 states and 50070 transitions. Word has length 200 [2023-12-22 02:41:13,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:41:13,490 INFO L495 AbstractCegarLoop]: Abstraction has 42999 states and 50070 transitions. [2023-12-22 02:41:13,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-22 02:41:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 42999 states and 50070 transitions. [2023-12-22 02:41:13,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-22 02:41:13,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:41:13,508 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:41:13,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2023-12-22 02:41:13,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:41:13,713 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:41:13,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:41:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1660909367, now seen corresponding path program 1 times [2023-12-22 02:41:13,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:41:13,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764291830] [2023-12-22 02:41:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:41:13,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:41:13,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:41:13,715 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:41:13,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-12-22 02:41:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:41:13,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:41:13,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:41:13,853 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-22 02:41:13,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:41:13,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:41:13,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764291830] [2023-12-22 02:41:13,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764291830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:41:13,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:41:13,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:41:13,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525599573] [2023-12-22 02:41:13,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:41:13,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:41:13,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:41:13,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:41:13,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:41:13,859 INFO L87 Difference]: Start difference. First operand 42999 states and 50070 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-22 02:41:16,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:41:16,220 INFO L93 Difference]: Finished difference Result 76667 states and 89508 transitions. [2023-12-22 02:41:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:41:16,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 201 [2023-12-22 02:41:16,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:41:16,311 INFO L225 Difference]: With dead ends: 76667 [2023-12-22 02:41:16,311 INFO L226 Difference]: Without dead ends: 43003 [2023-12-22 02:41:16,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:41:16,341 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 180 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:41:16,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 580 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:41:16,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43003 states. [2023-12-22 02:41:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43003 to 42999. [2023-12-22 02:41:18,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42999 states, 38344 states have (on average 1.1664406426037972) internal successors, (44726), 38670 states have internal predecessors, (44726), 2342 states have call successors, (2342), 1857 states have call predecessors, (2342), 2312 states have return successors, (2922), 2472 states have call predecessors, (2922), 2340 states have call successors, (2922) [2023-12-22 02:41:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42999 states to 42999 states and 49990 transitions. [2023-12-22 02:41:18,977 INFO L78 Accepts]: Start accepts. Automaton has 42999 states and 49990 transitions. Word has length 201 [2023-12-22 02:41:18,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:41:18,977 INFO L495 AbstractCegarLoop]: Abstraction has 42999 states and 49990 transitions. [2023-12-22 02:41:18,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-22 02:41:18,977 INFO L276 IsEmpty]: Start isEmpty. Operand 42999 states and 49990 transitions. [2023-12-22 02:41:19,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-22 02:41:19,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:41:19,004 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:41:19,010 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 (46)] Forceful destruction successful, exit code 0 [2023-12-22 02:41:19,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:41:19,209 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:41:19,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:41:19,209 INFO L85 PathProgramCache]: Analyzing trace with hash 450053532, now seen corresponding path program 1 times [2023-12-22 02:41:19,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:41:19,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367855976] [2023-12-22 02:41:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:41:19,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:41:19,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:41:19,211 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:41:19,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-12-22 02:41:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:41:19,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:41:19,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:41:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-22 02:41:19,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:41:19,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:41:19,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367855976] [2023-12-22 02:41:19,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367855976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:41:19,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:41:19,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:41:19,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198540367] [2023-12-22 02:41:19,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:41:19,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:41:19,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:41:19,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:41:19,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:41:19,460 INFO L87 Difference]: Start difference. First operand 42999 states and 49990 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)